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Still and Box for CFD: Near Miss Stairwell Collapse in Chicago

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A fire in a three story multiple family apartment building injured four City of Chicago (IL) firefighters when an interior stairway collapsed during firefighting operations.

The building was constructed in 1927 and consisted of 5456 square feet of space with 3-5 apartment units. Built of masonry wall construction with a wood floor joist system, the fire was reported at 8:43 a.m., in the Type III classified occupancy.

Street View Pre-Fire

The fire began as a basement fire that travelled up two floors, eventually compromising an upper stairway which resulted in compromise and collapsed injuring four Chicago firefighters.

The inherent characteristics of the building and the manner of fire travel and impingement are apparent contributors to the event.

 

Aerial- Alpha; Goggle Maps

CFD Fireground Operations: Photo Tim Olk

 

The four firefighters sustained injures during operations when the internal stairwell connecting the second and third floors gave way.

The mayday was transmitted, and a  211 Plan 1 at approximately 09:00 hrs., seventeen minutes into the operation according to published reports issued by Deputy District Chief Lynda Turner.  Following the mayday and firefighter removals, defensive operations were initiated.

Two of the firefighters sustained smoke inhalation and two firefighters minor injuries, according to Fire Department officials.

Large Warehouse Fire: Gastonia, NC

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A large warehouse fire in a 211,000 SF complex resulted from from a transformer explosion this morning at the Wix Distribution Center in Gastonia, NC.  The building complex was a former textile mill and was built in 1917.

Published report indicate that more than 60 firefighters operated at the scene to control the fire.

It was reported that  Fire Chief Phillip Welch stated firefighters started fighting the fires inside the building after the transformer explosion occurred, but it quickly got out of control.“There was an aggressive attack inside, but just because of the storage fight, we were not able to overcome that nor was the sprinkler system,” Welch said.

 

Aerial View, BING Map Capture

Considerations and Thoughts

  • How prepared is your department for a large scale fire in a large footprint warehouse?
  • Have you completed pre-fire plans, walk through tours and table top exercises for the key at risk buildings or complexes?
  • Do you know what the sustained water flow requirements might be for a heavily or fully involved complex or building?
  • Practices and honed your skills on establishing and managing  a complex, multi-operatonal period incident?
  • Have you looked at creating box alarms or pre-arranged greater alarm response and resource requests?
  • Have you trained with the departments, jurisdictions and companies that might respond?
  • Do you have strategies and tactics identified and have you trained on them for operations in large scale buildings?  Don’t implment and treat the incident like you would a residential or small commercial fire….
  • Respect the building and predict with conservative decision-making
  • Manage and expect compromise and collapse, rapid fire extention and operational challenges to fixed suppression systems and protectivies
  • Don’t over extend companies while attmtping to operate in the interior: These are typcially closed building ( lack of immedate exiting capabilties) with a special need for air management and accountability and access control.
IMAGES: Scene of Gastonia warehouse fire Saturday gallery

Colerain and Eleven Minutes to Mayday: Lessons from 2008 Resonate Today

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Remembering the Sacrafice: Capt. Broxterman and FF Schira

On Friday, April 4, 2008 at 06:13:02 hours, what began as a routine response for Colerain Township Fire and EMS Engine 102 to investigate a fire alarm activation at 5708 Squirrels nest Lane, Colerain Township, Ohio resulted in the deaths of Colerain Township Captain Robin Broxterman and Firefighter Brian Schira.

Upon their arrival at the scene of the two-story wood framed, residential building working fire conditions existed in the basement. The initial attack team consisted of Broxterman, Schira, and one other firefighter. The team advanced a 1¾-inch attack hose line through the interior of the building for fire control.

Even though, they were provided with some of the most technologically advanced protective clothing for structural firefighting and self-contained breathing apparatus, it appeared that Broxterman and Schira were overwhelmed by severe fire conditions in the basement. 

During their attempt to evacuate the building, the main-level family room flooring system in which the two were traveling on collapsed into the basement trapping the firefighters. Eleven minutes elapsed from time of arrival to the catastrophic chain of events.

This is one of those distinctive reports that has influential and critical operational, training and preparedness elements embedded throughout the report. 

It’s apparent there continues to be common threads shared by this event from 2008 and other events and incidents in the past five years where a single of multiple firefighters have lost their lives due to similarities in the apparent and common cause deficiencies and short comings identified.

All company and command officers should read and comprehend the lessons learned. Then, take these new found insights and see what the gaps are at the personal level (yours or those you supervise) as well as the shift, group, station, battalion, division or department as a whole.

If there are gaps, then identify a way to implement timely changes as necessary so there are No History Repeating (HRE) events.

The importance of Reading the Building, taking the time to complete the three sixty and being combat ready and “expecting fire”.

Remember their sacrifice, so we can learn.

 

  • Past Post on CommandSafety.com with Report Narrative and Incident Details HERE

 

The following factors were believed to have directly contributed to the deaths of Captain Broxterman and Firefighter Schira:

  • A delayed arrival at the incident scene that allowed the fire to progress significantly;
  • A failure to adhere to fundamental firefighting practices; and
  • A failure to abide by fundamental firefighter self-rescue and survival concepts

 Although the aforementioned factors were believed to have directly contributed to their deaths, they might have been prevented if:

  • Some personnel had not been complacent or apathetic in their initial approach to this incident;
  • Some personnel were in a proper state of mind that made them more observant of their surroundings and indicators;
  • The initial responding units were provided with all pertinent information in a
  • timely manner relative to the incident;
  • Personnel assigned to Engine 102 possessed a comprehensive knowledge of their first-due response area;
  • A 360-degree size-up of the building accompanied by a risk – benefit analysis
  • was conducted by the company officer prior to initiating interior fire suppression operations;
  • Comprehensive standard operating guidelines specifically related to structural
  • firefighting existed within the department;
  • The communications system users (on-scene firefighters and those monitoring the incident) weren’t all vying for limited radio air time;
  • The communications equipment and accessories utilized were more appropriate for the firefighting environment;
  • Certain tactical-level decisions and actions were based on the specific conditions;
  • Personnel had initiated fundamental measures to engage in if they were to become disoriented or trapped inside a burning building; and
  • Issued personal protective equipment was utilized in the correct manner.

 

 

References

WLTW.com Previous Stories:

 

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Identifying, Establishing and Managing Collapse Zones

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Vacant Structure Fire-Three Alarm, Type III Construction

Identifying, Establishing and Managing Collapse Zones

I mentioned in a recent post about on-going research and recommendations being developed for a significant report.

A notable issue that seems to resonate and surface on a reoccurring bais is the identification, establishment and management of collapse zones.
Building type, construction systems and materials, initiating, apparent or contributIng factors have an influence on collapse zone management (CZM).
Perimeter wall compromise and collapse of Type III and IV buildings continue to represent the leading types of collapse that contribute to significant firefighter injuries and line of duty deaths.
 
The ability to Read the Building, identify obvious and subtle features, conditions and indicators leading to collapse or compromise or the management and control of post collapse conditions is imperative.
 
Another critical operational factor is managing collapse zones and restricting access with consideration for degraded building conditions and the potential for multiple secondary collapse.
  • Are you up to speed with criteria for recognizing pre and post collapse indicators?
  • Do you have SOP/SOGs for collapse OPS?
 Collapse Zones
At a minimum:
Establish and maintain at a minimim a perimeter Collapse Management Zone (CMZ) of 1.5 x the building height.

Based on building type, height, materials of construction and type of projected collapse type – the potential for materials to travel beyond the CMZ is probable and should be assessed.

Safety Officers MUST maintain control to restrict access and to ensure companies are aware of potential for secondary collapse of compromised building features, assemblies or materials.

Maintain an acute high level of Situational Awareness, know your surroundings and don’t get tunnel vision on your task assignment.

Managing Collapse Zones

Great footage from Birmingham, AL at a three-alarm fire in a vacant building at 1811 1st Avene North with the peel away collapse of the upper wall on the Delta Division. Screenshot of collapse below with video link…

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2004 PA Church Fire and Collapse: Situational Awareness and Collapse Zone Management

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Remembrance:Pittsburgh(PA) Bureau of Fire- Post Fire Collapse and Double LODD

NIOSH Report F2004-17:  Career battalion chief and career master fire fighter die and twenty-nine career fire fighters are injured during a five alarm church fire -Pennsylvania.

On March 13, 2004, a 55-year-old male career Battalion Chief (Victim #1) and a 51-year-old male career master fire fighter (Victim #2) were fatally injured during a structural collapse at a church fire. Victim #1 was acting as the Incident Safety Officer and Victim #2 was performing overhaul, extinguishing remaining hot spots inside the church vestibule when the bell tower collapsed on them and numerous other fire fighters. Twenty-three fire fighters injured during the collapse were transported to area hospitals. A backdraft occurred earlier in the incident that injured an additional six fire fighters. The collapse victims were extricated from the church vestibule several hours after the collapse. The victims were pronounced dead at the scene.

NIOSH investigators concluded that, to minimize the risk of similar occurrences, fire departments should

  • ensure that an assessment of the stability and safety of the structure is conducted before entering fire and water-damaged structures for overhaul operations
  • establish and monitor a collapse zone to ensure that no activities take place within this area during overhaul operations
  • ensure that the Incident Commander establishes the command post outside of the collapse zone
  • train fire fighters to recognize conditions that forewarn of a backdraft
  • ensure consistent use of personal alert safety system (PASS) devices during overhaul operations
  • ensure that pre-incident planning is performed on structures containing unique features such as bell towers
  • ensure that Incident Commanders conduct a risk-versus-gain analysis prior to committing fire fighters to an interior operation, and continue to assess risk-versus-gain throughout the operation including overhaul
  • develop standard operating guidelines (SOGs) to assign additional safety officers during complex incidents
  • provide interior attack crews with thermal imaging cameras

Additionally,

  • municipalities should enforce current building codes to improve the safety of occupants and fire fighters

NIOSH REPORT: http://www.cdc.gov/niosh/fire/reports/face200417.html

Pittsburgh Bureau of Fire: HERE

Pre-Collapse Photo

Recommendation #1: Fire departments should ensure that an assessment of the stability and safety of the structure is conducted before entering fire and water-damaged structures for overhaul operations.

Discussion: Due to the destructive powers of fire, most structures that have been involved in fires are structurally weakened. In this incident, the structural integrity of the bell tower was weakened by a fire of several hours duration, the addition of thousands of gallons of water, and possibly the destructive effect of the backdraft. Analysis of the exterior of the structure should be performed continuously while conducting interior operations. Similarly, before overhaul operations are begun, the structure should be determined safe to work in by the IC and a designated Safety Officer. If necessary, the IC should seek the help of qualified structural experts or other competent persons to assess the need for the removal of dangerously weakened construction, or should make provisions for shoring up load-bearing walls, floors, ceilings, roofs, or as in this case, the bell tower.

Recommendation #2: Fire departments should establish and monitor a collapse zone to ensure that no activities take place within this area during overhaul operations.

Discussion: During fire operations, two rules exist about structural collapse: (1) the potential for structural failure always exists during and after a fire, and (2) a collapse danger zone must be established. A defensive attack was declared within an hour after fire suppression activities began. Part of a defensive strategy is establishing and moving fire fighters outside of the collapse zone.

 A collapse zone is an area around and away from a structure in which debris might land if a structure fails. Immediate safety precautions must be taken if factors indicate the potential for a building collapse. All persons operating inside the structure must be evacuated immediately and a collapse zone should be established around the perimeter. The collapse zone area should be equal to the height of the building plus an additional allowance for debris scatter and at a minimum should be equal to 1½ times the height of the building. For example, since the bell tower was 115 feet high, the collapse zone boundary should be established at least 173 feet away from the church. Once a collapse zone has been established, the area should be clearly marked and monitored, to make certain that no fire fighters enter the danger zone.

Recommendation #3: Fire departments should ensure that the Incident Commander establishes the command post outside of the collapse zone.

In this incident, command suffered a serious lapse after the Incident Commander and several company officers were injured in the collapse. The command post from which the IC manages the fireground must be located in an area outside of the collapse zone. The IC must ensure that the command post is protected from danger so that an effective command structure is maintained throughout the incident.1, 5

Remembering the Strand Theater Fire of 1941

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The Strand Theater | Brockton, MA

March 10, 1941: The Strand Theater Fire turned from a routine fire into one of the worst tragedies in Brockton and Massachusetts history when the west section of the roof collapsed, killing 13 firefighters and injuring 20 firefighters.

Check out the comprehensive past post from CommandSafety.com from 2011

http://commandsafety.com/2011/03/the-strand-theatre-fire-brockton-ma-march-10-1941-13-firefighter-lodd/

Worcester FF Brian Carroll recalls the Arlington Street Fire of December 8, 2011

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Firefighter Brian Carroll reflects on the 2011 Arlington Street Fire and Cold Storage Fire of 1999.

Firefighter Brian Carroll was trapped in the basement of 49 Arlington St. after the second-floor of the three-decker collapsed underneath him and his partner on Rescue 1. He thought his close friend was OK. Firefighter Carroll lay trapped and didn’t learn until after he was freed that Firefighter Davies had died.

“What happened to my brother, the three-decker collapsed in a way no one could predict,” Robert Davies said. “Certainly I think it serves as a lesson going forward, and even if it saves one life going forward, then at least something good came out of it.”

Firefighter Davies, who was 43 when he died, has a son, Jon D. Davies Jr., in the department now as a firefighter.

  • From the Worcester Telegram & Gazette;  A cruel month for Worcester firefighters HERE
  • NIOSH REPORT Career Fire Fighter Dies and Another is Injured Following Structure Collapse at a Triple Decker Residential Fire – Massachusetts: HERE

Remembrance: Worcester Cold Storage Tragedy

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Worcester Cold Storage Tragedy

On December 3, 1999, a five-alarm fire at the Worcester Cold Storage & Warehouse Co. building claimed the lives of six brave firefighters who responded to the call. These six heros, The Worcester 6, sacrificed their lives to try and rescue two individuals who were believed to be trapped inside the inferno. May the Worcester 6 always be remembered; “Fallen Heroes Never Forgotten.”

Firefighter Paul A. Brotherton
Firefighter
Paul A. Brotherton
Firefighter Timothy P. Jackson
Firefighter
Timothy P. Jackson
Firefighter Jeremiah M. Lucey
Firefighter
Jeremiah M. Lucey
Firefighter James F. Lyons
Firefighter
James F. Lyons
Firefighter Joseph T. McGuirk
Firefighter
Joseph T. McGuirk
Lieutenant Thomas E. Spencer
Lieutenant
Thomas E. Spencer

Memorial Dedicated to Six Boston FF Killed In 1942 East Boston Luongo Fire

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1942 November 15 2012

 

Memorial dedicated in East Boston (MA) honoring Six Boston firefighters who made the supreme sacrifice while battling a fire in 1942.

Bagpipes echoed through Maverick Square Thursday at the conclusion of a ceremony dedicating a memorial to six Boston firefighters who died 70 years ago.

WBZ NewsRadio 1030′s Carl Stevens reports  Download: fire-memorial-stevens-w1.mp3

2012 Memorial to the Six firefighters

Six Boston Firefighters were killed in the line of duty as a result of the collapse, all of whom were conducting operations and working on the second floor with hose lines.

Supreme Sacrifice in the Line of Duty:

  • Hoseman John F. Foley, Engine Company 3
    • 57 years of age | 30 year veteran
  • Hoseman Edward F. Macomber, Engine Company 12
    • 47 years of age | 24 year veteran
  • Hoseman Peter F. McMorrow, Engine Company 50
    • 45 years of age | 19 year veteran
  • Hoseman Francis J. Degan, Engine Company 3
    • 24 years of age | 15 month veteran
  • Ladderman Daniel E. McGuire, Ladder Company 2
    • 44 years of age | 19 year veteran
  • Hoseman Malachi F. Reddington, Engine Company 33
    • 48 years of age | 19 year veteran

      In Memoriam

 

  • CommandSafety.com Full Article, HERE 
  • CBS Boston, HERE
  • Boston Globe w Video, HERE

Nothing is Ever Routine: Residential Fire-Chicago LODD

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Terrence Antonio James, Chicago Tribune

 

Nothing is ever routine;…… pause to reflect and remember the demands of the job and the inherent risks and the sacrifices made each and every day in this noble profession of the fire service.

Another beloved brother firefighter’s sacrifice, protecting the citizens of his great city.     

Chicago Captain Herbert Johnson, 54, suffered second- and third-degree burns during fire suppression operations being conducted in the attic of the residential house at 2315 West 50th Place, according to Chicago FD officials and published media reports. The 32-year veteran of the Chicago Fire Department died Friday night after he and another firefighter were injured in a blaze that spread quickly through the 2-1/2 story wood frame house. The second firefighter injured was reported in good condition at Advocate Christ Medical Center in Oak Lawn, according to a department spokeswoman.

Captain Johnson, was promoted from lieutenant this summer and was assigned to Engine Co. 123 in Back of the Yards Section of Chicago for the night tour but normally worked all around the city.

Companies were called to the 2-1/2-story wood frame house at 17:15 hours on Friday evening.  During initial fire suppression operations, a mayday for a trapped firefighter was communicated around 17:30 hours.  Immediate RIT and rescue deployments brought the Captain and the other firefighter out of the structure.

Research identifies the residential occupancy building as being built in 1896 (age 116 years) and constructed of a common balloon framing system (type V wood) with a wood gable roofing system. Published photographs suggests that both original wood sheathing and shinges were present with some new outer sheathing materials being added and renovated at some point with some OSB type sheathing installed with rigid insulation boards and an outer vinyl siding system. Records indicate the house was approximately 2000 square feet in size and measured approximately 20 ft. x 60 ft.  County documents indicated the roofing system was an asphalt shinge system on a wood plank deck. Post event photopraphs depict the typical framing system components, wall and roof system and collapsed materials.

The firefighters may have been caught in a flashover within the attic compartment according to early reports according to reports from department spokesman Larry Langford. “This fire is under investigation, and our main concern right now is the family,” said Fire Commissioner Jose Santiago, Santiago was joined at the University of Chicago Medical Center, where Johnson died in the emergency room, by officials including Mayor Rahm Emanuel.

Captain Johnson was the first Chicago firefighter killed fighting a fire since two firefighters, FF Edward Stringer and FF Corey Ankum died battling a blaze at an abandoned South Shore laundry in December 2010. (see previous CommandSafety.com coverage HERE and HERE)

 Published reports poignantly stated the following;

 “On behalf of the people of the City of Chicago, I want to express my condolences to the family and friends of Chicago Fire Department Captain Herbert Johnson, who tragically paid the ultimate sacrifice while battling a blaze early this evening,” Mayor Rahm Emanuel said in a written statement.  “As we mourn Captain Johnson, we are all reminded of the dangerous job and selfless work of our brave firefighters. Being a firefighter is not simply a job, but a call to serve the public and greater good.  In his 32 years protecting Chicago, Captain Johnson certainly exemplified the best traits in firefighters everywhere.”

 

Chicago ABC 7 News

 

 

Division A Streetside Photo by Scott Stewart~Sun-Times

 

Division A, Street View Typical 2.5 story Wood Frame Residential – Google Street Maps.

 

“On behalf of the people of the City of Chicago, I want to express my condolences to the family and friends of Chicago Fire Department Captain Herbert Johnson, who tragically paid the ultimate sacrifice while battling a blaze early this evening,” Mayor Rahm Emanuel said in a written statement. 

“As we mourn Captain Johnson, we are all reminded of the dangerous job and selfless work of our brave firefighters. Being a firefighter is not simply a job, but a call to serve the public and greater good. ”

“In his 32 years protecting Chicago, Captain Johnson certainly exemplified the best traits in firefighters everywhere.”

 

Chicago firefighter Herbert Johnson, left, poses with Chicago Fire Commissioner Jose Santiago, right, after Johnson was promoted to the rank of captain. Johnson died from injuries sustained while fighting a house fire on the South Side. — Chicago Fire Department

 

Readings and Learnings

Additional Coverage and Links

  • From Chicago WGNTV, HERE
  • From the Chicago Tribune, HERE and HERE
  • From the Chicago Sun Times, HERE
  • Photo Gallery from the Sun-Times, HERE
  • Photo Gallery from the Chicago Tribune, HERE
  • Aerial Fireground Operations, Chicago ABC 7 News, HERE
  • Google Maps; StreetView Images, HERE
  • Chicago CBS, HERE

 

Construction Insights for Typical Gabled Roof Attic with enclosed knee wall voids (typical examples) Occupied or Storage Attic Space Enclosure

  • Common attic spaces in buildings constructed of balloon framing systems may have the presence of knee wall voids or may have open ridge to eave
     clear space.
  • Knee wall spaces may be open to the compartment or may be enclosed and used for storage resulting in significant concentrated fire load. Inherent travel paths for fire due to non-fire stopped voids at the wall/eave interface results in concentrated fire impingement and degradation that can lead to isolated or catastrophic system failure and assembly collapse.
  • Age deterioration over many decades will commonly affect the structural integrity of the collar beams to maintain the structural stability of the roofing rafter system in the attic space. Renovations and alterations may also create operational risk hazards for conducting operations within fire induced attic compartments due to the absence of collar beams that further create unstable structural conditions to flame or heat affected roof components and systems.
 
 

Typical Enclosed Attic Voids and Kneewalls

 

 

 

 

 

Common Rafter Roof Framing Details- Buildingsonfire.com

 

Common Rafter Roof Framing Details- Buildingsonfire.com

Common Wood Gable Rafter Framing System- Buildingsonfire.com

    

Typcial Balloon Framing System with Gable Rafter Roof Framing- Buildingsonfire.com

  

 

Don’t neglect to be observant of construction features in contemporary construction such as this attic in a modular prefabricated residential house. Photo by CJ Naum

   

    

 

John J. Kim, Chicago Tribune

 

Fire Fighter Killed by Exterior Wall Collapse during Defensive Operations at a Commercial Structure

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On June 17, 2011, a 22-year-old male paid-on-call fire fighter received fatal injuries when he was struck by bricks and falling debris during an exterior wall collapse at a commercial structure fire.

Crews worked using defensive operations for about 45 minutes attempting to extinguish the fire in the 96 year-old brick and masonry structure that housed an antique store with living quarters located in a rear addition. The victim and another fire fighter were moving a 35-foot aluminum ground ladder away from the Side D (east) wall of the structure when the top part of the exterior wall collapsed. No other fire fighters were injured in the collapse.

NIOSH REPORT: Report 2011-15     HERE

Contributing Factors

  • 96 year-old brick masonry structure degraded by fire burning for over 45 minutes
  • Fire fighters with limited experience entered collapse zone to move ground ladder
  • Entering collapse zone in close proximity to master stream directed onto roof
  • Limited visibility at side and rear of structure may have obscured signs of pending collapse
  • Limited training on structure collapse hazards.

 

Key Recommendations

  • Establish and monitor a collapse zone when conditions indicate the potential for structural collapse
  • Train all fire fighting personnel on the risks and hazards related to structural collapse
  • Train on and understand the effects of master streams on structural degradation
  • Conduct regular mutual aid training with neighboring departments
  • Designate a staging area for all unassigned fire fighters and apparatus
  • Implement national fire fighter and fire officer training standards and requirements.

Fire Behavior

According to the investigating State Fire Marshal, the fire originated in the rear of structure due to undetermined causes. A thunderstorm had passed through the area approximately two hours before the fire was reported and lightning strikes were reported in the immediate area. The dispatch center received multiple phone calls reporting a fire behind the antique store near the courthouse square.

Provided Photo, All Rights Reserved

 

Indicators of significant fire behavior

  • Smoke filled store front when first crews arrived
  • Smoke pushing out cracks in the Side A and D walls and around windows on Side D
  • Thickening dark brown smoke upon arrival
  • No visible fire
  • Windows at front broken to vent structure
  • Windows on Side D broken to vent 2nd floor
  • Roll up overhead door opened at C/D corner
  • Fire rapidly grew and moved toward front of store, becoming visible through windows
  • Smoke diminished and visibility improved at front
  • Smoke continued to push out under pressure through cracks in Side A and D walls
  • Fire vented through roof at rear of structure
  • Thick column of turbulent dark grey-black smoke rose above structure
  • Smoke increased in front and Side D of structure as fire intensified
  • Smoke continued to push out cracks on Side A and D walls
  • E-43 deck gun put into operation applying water to roof with 13/8-inch solid bore tip
  • Elevated master stream put into operation from D-110 aerial ladder (insufficient water supply resulted in insufficient fire flow)
  • E-43 deck gun re-directed hose stream to protect exposure buildings opposite Side D
  • Initial collapse of roof and walls at C/D corner
  • Partial wall collapse of Side D wall strikes fire fighter moving ground ladder.

Recommendations

Recommendation #1: Fire departments should establish and monitor a collapse zone when conditions indicate the potential for structural collapse.

Discussion: During fire operations, two rules exist about structural collapse: (1) the potential for structural failure always exists during and after a fire, and (2) a collapse danger zone must be established.4-9 A collapse zone is an area around and away from a structure in which debris might land if a structure fails. The collapse zone area should be equal to the height of the building plus an additional allowance for debris scatter and at a minimum should be at least 1½ times the height of the building.

Buildings can collapse due to the structural damage directly caused by a fire, or the activities of fire fighting operations. A fire department’s familiarity with types of construction in their community is an important tool in safely fighting fires. Once a collapse zone is established, fire departments should enforce a “no re-entry” policy unless approved by the Incident Commander.

Fire fighters need to recognize the dangers of operating near parapet walls or underneath overhanging awnings, porches, and other areas susceptible to collapse. Immediate safety precautions must be taken if factors indicate the potential for a building collapse. An external load, such as a parapet wall, steeple, overhanging porch, awning, sign, or large electrical service connections reacting on a wall weakened by fire conditions may cause a wall to collapse. Other factors include fuel loads, damage, renovation work, deterioration caused by the fire as well as pre-existing deterioration, support systems and truss construction.10-12 A collapse is a possibility after fire involvement of more than 10 minutes but fire departments should not rely solely on time as a collapse predictor.11

In this incident, the structure was estimated to be 22 feet high at the top of the D-side wall parapet wall so the collapse zone should have extended at least 33 feet from the structure, covering the entire width of the side-street adjacent to the structure. It is noted that fire fighters were instructed to stay away from the structure and a defensive strategy was used throughout the fire suppression operations. However, a collapse zone was never established or physically identified. Collapse zones can be physically marked by cones, caution tape and other types of physical barriers. Photo 10 taken at the incident scene showed fire fighters standing on the sidewalk as instructed opposite the wall that collapsed.

Recommendation #2: Fire departments should train all fire fighting personnel in the risks and hazards related to structural collapse.

Discussion: Proper training is an important aspect of safe fire ground operation. Both officers and fire fighters need to be aware of different types of building construction and their associated hazards.7, 9-10 For example, collapsing roof systems can exert pressure on supporting exterior walls, increasing the potential for wall collapse. Different roof systems may collapse at different rates.11 While heavy timber roof systems will withstand more degradation by fire than lightweight engineered roof trusses, both types are subject to failure.12 Different phases of the fire suppression activities, such as the initial attack, offensive, defensive, and overhaul phases will have different hazards. However, the potential for collapse exists in any fire-damaged structure.11 One source of information related to structural collapse hazards is the National Institute of Standards and Technology, Building and Fire Research Laboratory (NIST / BFRL). A DVD containing videos and reports related to structural collapse can be obtained from the NIST websiteExternal Web Site Icon http://www.bfrl.nist.gov/.13

Establishing priorities is another primary factor in safe fire ground operation that should be included in fire fighter training programs. The protection of life should be the highest goal of the fire service. According to retired Chief Vince Dunn, “When there is no clear danger to civilians, the first priority of firefighting should be the protection of fire fighters’ lives and when no other person’s life is in danger, the life of the fire fighter has a higher priority than fire containment or property consideration.”12 In this incident, there were no indications of civilians in danger inside the structure. It is noted that defensive operations were used throughout the incident.

The Illinois Fire Service Institute (IFSI) coordinates a statewide training program for individuals interested in becoming a fire fighter. This program offers a 24-hour Basic Fire Fighter course as well as Fire Fighter II and Fire Fighter III certification. The IFSI Fire Fighter II certification is roughly equivalent to the National Fire Protection Association (NFPA) Fire Fighter I and IFSI Fire Fighter III is roughly equivalent to NFPA Fire Fighter II as specified in NFPA 1001 Standard for Fire Fighter Professional Qualifications.1 NFPA FF I reflects minimum training standards for a fire fighter who is always working under supervision. NFPA FF II addresses the assumption of command and transfer of command but does not contain specific job performance requirements (JPRs) to illustrate the required skills. The IFSI 24-hour Basic Fire Fighter course may not properly prepare new fire fighters for the hazards associated with structural fire fighting. Many fire fighters, especially in the volunteer ranks, may be called upon to fill company officer and incident commander roles when they may not have received adequate training to prepare them for the additional responsibilities that are required of fireground officers. At a minimum, fire fighters who serve as company officers and who may be expected to serve as the initial incident commander should receive training equivalent to NFPA Fire Fighter II, as defined by NFPA 1001. In this incident, the victim had not completed the minimum IFSI or NFPA training requirements for individuals operating at a structure fire. Also, the two lieutenants who served as incident commanders had not completed training meeting the requirements of NFPA Fire Fighter II as defined by NFPA 1001, which should be the minimum training requirements for a fire fighter operating as a fireground officer.

Recommendation #3: Fire departments should train on and understand the effects of master streams on structural degradation.

Discussion: Master streams are an effective tool for fire suppression operations. Master streams can deliver a large volume of water over a distance while reducing the direct exposure of fire fighters to the fire. Master stream operations can also accelerate structural degradation and can increase the risk of a building collapse.14-16 When multiple master streams are flowing water into a building, the additional weight of the water can rapidly increase the potential for structural collapse. Water weighs 8.33 pounds per gallon. A master stream flowing 1,000 gallons per minute can add an additional 8,330 pounds per minute that the structure, already deteriorated by fire, must support. In 30 minutes, the additional weight contributed by this master stream could add 249,900 pounds or 125 tons of additional weight to the structure.17 Direct impingement of the master stream at close range can also directly contribute to structural degradation by dislodging bricks, breaking windows and other building components. Master streams can also push fire throughout the interior of a structure, leading to fire spread.

Another important indicator that fire fighters and officers should look for is the presence or lack of runoff during master stream operations. If multiple outside streams are being applied to a structure and there is little or no water runoff, the water must be accumulating somewhere.15 As noted above, the additional weight added by standing water on roofs or floors can significantly contribute to the risk of structural collapse. Fire fighters and fire officers need to understand this fact and take this into consideration as part of the Incident Action Plan. If a collapse zone has not already been established, one should be established now. Fire fighters should not be allowed to enter the collapse zone without the direct permission of the Incident Commander.18

Recommendation #4: Fire departments should use risk management principles at all structure fires.

Discussion: While it is recognized that fire fighting is an inherently hazardous occupation, established fire service risk management principles are based on the philosophy that greater risks will be assumed when there are lives to be saved and the level of acceptable risk to fire fighters is much lower when only property is at stake. Interior (inside a structure) offensive fire-fighting operations can increase the risk of traumatic injury and death to fire fighters from structural collapse, burns, and asphyxiation. Established risk management principles suggest that more caution should be exercised in abandoned, vacant, and unoccupied structures and in situations where there is no clear evidence indicating that people are trapped inside a structure and can be saved.19 More importantly, the fire department must establish a standardized method or approach to assess the risks encountered at each incident especially structure fires. Structure fires are very dynamic and fast paced operations with little room for error, mistakes, or miscalculations of the significance of the risk encountered.

The Incident Commander is specifically responsible for managing risk at the incident; however, one person cannot be expected to apply these principles to an incident if the organization has not integrated a standard approach to risk management into its standard operating procedures and its organizational culture. To be effective, risk management principles must be integrated into the entire operational approach of the fire department organization. They must be incorporated within the duties and responsibilities of every officer and member. The single most important reason to establish an effective incident management system is to ensure that operations are conducted safely. Every individual assigned to the incident is responsible for monitoring and evaluating risks and for keeping the Incident Commander informed of any factor that causes the system to become unbalanced. Continuous risk assessment should be reprocessed with every benchmark or task completed until the incident is ended.20

A standardized evaluation of the situation must occur at each incident starting with the first arriving officer or member of the department arriving on scene of the incident. This process starts with the scene size-up. This responsibility starts with the first arriving unit that must look at the entire incident scene versus focusing on a small part of the situation. During the size-up, the Incident Commander must remember the incident prioritizes which are:

  •             Life Safety
  •             Incident Stabilization
  •             Property Conservation
  •             Continuous – fire fighter safety

Situations where there is clear evidence or indication that there is a life safety (imminent rescue or trapped occupants) changes the focus of the strategy and incident action plan. Established risk management principles dictate that more caution is exercised in abandoned, vacant, and unoccupied structures.

Scene size-up should include the following information. Scene size-up should begin at the beginning of the alarm, continue upon arrival on scene, and continue throughout the incident. Some considerations should include:

  •             Life safety/occupied structure and realistic evaluation of occupant survivability and rescue potential
  •             Type of Occupancy and consideration of fire load and fire behavior
  •             Access
  •             Building Construction
  •             Environmental Conditions
  •             Location and extent of the fire within the building
  •             Resources Responding
  •             Water Supply
  •             Special Hazards/Risks
  •             Time of Day
  •             Color of Smoke
  •             Utilities
  •             Exposures affected or potential affected
  •             A realistic evaluation of the ability to conduct an offensive attack with available resources.19, 21

The Incident Commander should use the scene size-up to formulate a strategy and the Incident Action Plan. Incident factors and their possible consequences offer the basis for a standard incident management approach. Decisions and the action they produce can be no better than the information on which they are based. A standard information management approach is the launching pad for effective incident decision making and successful operational performance. The IC must develop the habit of using the critical factors in their order of importance as the basis for making the specific assignments that make up the Incident Action Plan (IAP). This standard approach becomes a huge help when it is hard to decide where to start.

The incident scene size-up must be viewed as a 2-part process: 1) determining the conditions of the incident scene, and 2) determining whether the fire department has on scene, has in route, or is in need of additional resources to address the challenge presented by what has been identified during the first part of the size-up process.

The IC must create a standard information system and use effective techniques to keep informed at the incident. Information is continually received and processed so that new decisions can be made and old decisions revised based on increased data and improved information. The IC can never assume action-oriented responders engaged in operational activities will just naturally stop what they are doing so they can feed the IC a continuous supply of top-grade objective information. It is the IC’s responsibility to do whatever is required to stay effectively informed.22

During most critical incident situations, Command many times must develop an IAP, based only on the critical factor evaluation information available at the beginning stage of operations. Many times, that information is incomplete. Even though the IC will continue to improve its quality, the IC will seldom function during the fast, active periods of the event with complete or totally accurate information on all factors.22

This is most evident during confused, compressed-time initial operations. This continual improvement in the accuracy and timeliness of incident information becomes a major IC function. The ability of the IC and the tactical and task level officers to quickly be informed and perform an analysis of the critical factors that can cause major physical and emotional setbacks to the responders and the customers will have a great impact on the health and longevity of the fire fighters, other first responders, the customers and their property.22

In general terms, the risk management plan must consider the following: (1) risk nothing for what is already lost—choose defensive operations; (2) extend limited risk in a calculated way to protect savable property—consider offensive operations; (3) and extend very calculated risk to protect savable lives—consider offensive operations.19, 23, 24 NFPA 1500 Standard on Fire Department Occupational Safety and Health Program, Chapter 8.3 addresses the use of risk management principles at emergency operations. Chapter 8.3.4 states that risk management principles shall be routinely employed by supervisory personnel at all levels of the incident management system to define the limits of acceptable and unacceptable positions and functions for all members at the incident scene. Chapter 8.3.5 states that at significant incidents and special operations incidents, the Incident Commander shall assign an incident safety officer who has the expertise to evaluate hazards and provide direction with respect to the overall safety of personnel. The annex to Chapter 8.3.5 contains additional information.25

This incident occurred in a structure of mixed occupancy of both commercial and residential use. First arriving crews talked to the building owner and verified that no one was inside the structure. The Incident Commander quickly adopted a defensive strategy and told fire fighters at the front door not to enter the structure. As additional resources arrived on-scene, and Command was passed to higher ranking officers, a defensive operation was maintained. A ground ladder used to ventilate the second story windows on the Side D was left in place where it was last used. Approximately 45 minutes after the first crews arrived on-scene, two fire fighters overheard discussions about the ladder being in a bad location and approached the structure to retrieve the ladder. Given the length of time the fire had been burning, the visual indicators of structural instability (smoke pushing out through cracks in the masonry walls and the sound of bricks popping), the presence of star-shaped anchor plates on the exterior wall and other factors, the best scenario would have been to leave the ladder in place until the area was deemed safe or just write the ladder off. A safer strategy for retrieving the ladder would have been to use a pike pole or other long tool to reach the ladder from a safe distance under the direct observation of other fire fighters monitoring the conditions of the exterior walls. Using a pike pole or other tool to pull the ladder down while standing as far as possible from the exterior wall, may have resulted in a different outcome.

Recommendation #5: Fire Departments should utilize the Incident Command System at all emergency incidents.

Discussion: National Fire Protection Association (NFPA) 1500 Standard on Fire Department Occupational Safety and Health Program, 2007 Edition25 and NFPA 1561 Standard on Emergency Services Incident Management System, 2008 Edition26, both state an incident management system should be utilized at all emergency incidents. Most often, this system is commonly known as or referred to as the Incident Command System (ICS).

The Incident Command System is intended to provide a standard approach to the management of emergency incidents. The many different and complex situations encountered by fire fighters require a considerable amount of judgment in the application of the Incident Command System. The primary objective is always to manage the incident, not to fully implement and utilize the Incident Command System. The Incident Commander should be able to apply the Incident Command System in a manner that supports effective and efficient management of the incident. The use of the Incident Command System should not create additional challenges for the Incident Commander, but rather provide a systems approach to ensuring for a successful outcome of the incident.26

Most incidents are considered routine and involve a small commitment of resources, while few incidents involve large commitments of resources, complex situations, and are low frequency/high risk events. It is imperative that the Incident Command System be able to accommodate all types and sizes of incidents and to provide for a regular process of escalation from the arrival of the first responding resources at a routine incident to the appropriate response for the largest and most complex incidents. The Incident Command System should be applied, even to routine incidents, to allow fire fighters and other first responders to be familiar with the system, prepared for escalation, and aware of the risks that exist at all incidents.26

NFPA 1561, Chapter 3.3.29 defines an incident management system as “A system that defines the roles and responsibilities to be assumed by responders and the standard operating procedures to be used in the management and direction of emergency incidents and other functions.”26 Chapter 4.1 states “The incident management system shall provide structure and coordination to the management of emergency incident operations to provide for the safety and health of emergency services organization (ESO) responders and other persons involved in those activities.”26 Chapter 4.2 states “The incident management system shall integrate risk management into the regular functions of incident command.” 26

The incident management system covers more than just fireground operations. The incident management system must ensure for command and fire fighter safety which includes situational evaluation, strategy and the incident action plan, personnel accountability, risk assessment and continuous evaluation, communications, rapid intervention crews (RIC), roles and responsibilities of the Incident Safety Officer (ISO), and interoperability with multiple agencies (law enforcement, emergency medical services, state and federal government agencies and officials, etc.) and surrounding jurisdictions (automatic aid or mutual aid responders).

One of the most critical components of this system is the development and implementation of an Incident Action Plan (IAP). For the fire service, the majority of times the Incident Action Plan is communicated verbally. The IAP is based on the resources immediately available and those responding. The goal is determined in accordance with the incident priority from which a strategy must emerge; tactical objectives, aimed at meeting the strategy, are determined and specific assignments made. A personnel accountability system should be established as assignments are made. The important point is that the Incident Commander communicates the IAP to tactical and task level supervisors.

Recommendation #6: Fire departments should designate a staging area for all unassigned fire fighters and apparatus.

Discussion: NFPA 1561 Standard on Emergency Services Incident Management System defines staging as a specific emergency management function where resources are assembled in an area at or near the incident scene to await instructions or assignments.26 Staging provides a standard controlled method to keep reserves of responders, apparatus, and other resources ready for action at the scene of the incident or close to the scene of the incident (within two – three minute response times). Staging also provides a standard method to control and record the arrival of apparatus and resources.

When the Incident Commander requests additional resources for an incident, the IC is responsible for designating a staging area. Depending on the size and complexity of an incident, multiple staging areas may be used. This is based on the response route of the resources, to stage resources by typing (e.g. engines, brush trucks, medic units, law enforcement, etc.), or due to location near the incident. The staging area manager documents the available resources. This helps the Incident Commander to keep track of the resources that are on the scene and available for assignment, and to know where they are located and where specific units have been assigned. The Staging Area Manager reports to the IC unless an Operations Section Chief has been assigned, then the Staging Area Manager would report to the Operations Section Chief.

When companies or resources arrive in staging, they report to the Staging Area Manager and stand by for assignment. The Staging Area Manager records and keeps an inventory of all resources and equipment assigned to Staging. A system needs to be in place that details what needs to occur when Staging starts to run low on resources. Staging lets “Command” know when resources are low, and Command orders more resources through Dispatch.

Staging provides an avenue for reducing overall incident communications, and maintaining control of resources throughout the incident operations.

Recommendation #7: Fire departments should conduct pre-incident planning inspections of buildings within their jurisdictions to facilitate development of safe fireground strategies and tactics.

Discussion: National Fire Protection Association (NFPA) 1620 Standard for Pre-Incident Planning, 2010 Edition, states “the pre-incident plan shall provide critical information for responding personnel at the time of dispatch and shall include initial actions based on the priorities of life safety, scene stabilization, and incident mitigation.” This standard also states that “the primary purpose of a pre-incident plan is to help responding personnel effectively manage emergencies with available resources. Pre-incident planning involves evaluating the protection systems, building construction, contents, and operating procedures that can impact emergency operations.”27 A pre-incident plan identifies deviations from normal operations and can be complex and formal, or simply a notation about a particular problem such as the presence of flammable liquids, explosive hazards, modifications to structural building components, or structural damage from a previous fire.7, 27-28

In addition, NFPA 1620 outlines the steps involved in developing, maintaining, and using a preincident plan by breaking the incident down into pre-, during- and post-incident phases. In the preincident phase, for example, it covers factors such as physical elements and site considerations, occupant considerations, protection systems and water supplies, hydrant locations, and special hazard considerations. Building characteristics including type of construction, materials used, occupancy, fuel load, roof and floor design, and unusual or distinguishing characteristics should be recorded, shared with other departments who provide mutual aid, and if possible, entered into the dispatcher’s computer so that the information is readily available if an incident is reported at the noted address. Since many fire departments have tens and hundreds of thousands of structures within their jurisdiction, making it impossible to pre-plan them all, priority should be given to those having elevated or unusual fire hazards and life safety considerations.

Pre-plan information should include predicted alarm assignments based upon the fire potential. This will help to ensure that needed resources are dispatched immediately, even if they are some distance away or will provided through mutual aid. If the expected fire potential dictates that 30 fire fighters are needed and the authority having jurisdiction only has 15 fire fighters, the pre-plan should identify the mutual aid resources available to safely and effectively mitigate the expected fire scenario. The pre-plan information should take into consideration the need for incident command and command level officers to fill roles such as safety officer, accountability, tactical level management (i.e. division or group supervisor), RIT / RIC supervision, staging, rehabilitation, IC support ( chief’s aide or staff assistant to monitor radio communications, track crew assignments, resources availability, etc.) and other functions as necessary. When the need for these positions are considered in the pre-planning process, these positions can be rapidly filled throughout the initial alarm assignments, allowing for crew and supervisory integrity while placing more experienced command level support officers in the roles needed to ensure effective supervision and support in the hazard zone. In this incident, pre-planning the structure could have identified the potential collapse hazards associated with the structure due to the age and type of construction, the presence of the star-shaped anchor plates on the exterior walls, and the high fuel load present. It is noted that the Fire Department A had an unwritten policy that any fires in the older commercial structures within the city would be fought defensively.

Recommendation #8: Fire departments should conduct regular mutual aid training with neighboring departments.

Discussion: Although there is no evidence that the following recommendation would have prevented this fatality, it is being provided as a reminder of a good safety practice. Mutual aid companies should train together and not wait until an incident occurs to attempt to integrate the participating departments into a functional team. Differences in equipment and procedures need to be identified and resolved before an emergency occurs when lives may be at stake. Procedures and protocols that are jointly developed, and have the support of the majority of participating departments, will greatly enhance overall safety and efficiency on the fireground. Once methods and procedures are agreed upon, training protocols must be developed and joint-training sessions conducted to relay appropriate information to all affected department members.

Fire departments should develop and establish good working relationships with surrounding departments so that reciprocal assistance and mutual aid is readily available when emergency situations escalate beyond response capabilities. Both fire departments involved in this incident were participating members in the Mutual Aid Box Alarm System (MABAS), a mutual aid system designated to assist with mutual aid response of fire, emergency medical services (EMS), specialized response teams, and station coverage during a state declared disaster or when an incident overwhelms the available resources of a participating community. This incident did not escalate to the size of a MABAS event. Both departments reported that they planned to implement mutual aid training with neighboring departments but had done so on a limited basis up to the time that this incident occurred.

Recommendation # 9: Fire departments should ensure that fire fighters wear a full array of turnout clothing and personal protective equipment (i.e. SCBA and PASS device) appropriate for the assigned task while participating in fire suppression and overhaul activities.

Discussion: Although there is no evidence that the following recommendation would have prevented this fatality, it is being provided as a reminder of a good safety practice. The proper selection and use of personal protective equipment (PPE) is required by OSHA regulations, recommended in NFPA standards, and is good safety practice. Chapter 7.1.1 of NFPA 1500, Fire Department Safety and Health Program, 2007 Edition, states “the fire department shall provide each member with protective clothing and protective equipment that is designed to provide protection from the hazards to which the member is likely to be exposed and is suitable for the tasks that the member is expected to perform.” Chapter 7.1.2. states “protective clothing and protective equipment shall be used whenever a member is exposed or potentially exposed to the hazards for which the protective clothing (and equipment) is provided.”25 The incident commander should establish the level of protective clothing necessary to enter the fire zones (hot, warm, and cold). The OSHA Respirator Standard Title 29, Code of Federal Regulations (CFR) 1910.134 lists requirements for SCBA use in immediately dangerous to life or health (IDLH) atmospheres.29 While the lack of personal protective equipment (PPE) and clothing did not contribute to the fatality that occurred at this incident, it is generally recognized that SCBA should be worn and used at all times when fire fighters may be exposed to smoke and other hazardous atmospheres. Photos taken during the incident show fire fighters working in close proximity to the burning structure who were not wearing proper respiratory protection (see Photo 7, Photo 8 and Photo 11).

In addition, standard setting organizations, national fire service organizations and other interested parties should:

Recommendation #10: Implement national fire fighter and fire officer training standards and requirements.

Discussion: In 2008, the National Volunteer Fire Council (NVFC) adopted a policy position that all volunteer fire departments should establish a goal to train all personnel to a level consistent with the mission of the fire department, based on the job performance requirements outlined in NFPA 1001: Standard for Fire Fighter Professional Qualifications. The NVFC is committed to ensuring that volunteer firefighters have an appropriate level of training to safely and effectively carry out the functions of the department(s) that they belong to. 30

“The roles and responsibilities of the fire service have evolved over the years. As the breadth and scope of what it means to be a firefighter has expanded, to varying degrees depending on the jurisdiction, the necessity for training within the fire service has grown. Unfortunately, a large number of volunteer fire departments are still operating with personnel who are not trained to a level consistent with national consensus standards for basic firefighter preparedness. This can lead to ineffective and unsafe responses that put lives and property at risk.” 30 This issue actually encompasses the entire fire service and not just the volunteer ranks.

“As the need for proper training has become more urgent, many volunteer fire departments are finding it increasingly difficult to attract new members. The average age of volunteer firefighters has risen steadily over the past two decades, as many young people move out of rural areas and the ones who stay find themselves with less free time to devote to training.” 30

Standard setting organizations, states and authorities having jurisdiction should move to develop national standards so that fire fighters across the United States are trained to the same minimum levels. The Illinois Fire Service Institute (IFSI) coordinates a statewide training program for individuals interested in becoming a fire fighter. This program offers a 24-hour Basic Fire Fighter course as well as Fire Fighter II and Fire Fighter III certification. The IFSI Fire Fighter II certification is roughly equivalent to the National Fire Protection Association (NFPA) Fire Fighter I and IFSI Fire Fighter III is roughly equivalent to NFPA Fire Fighter II as specified in NFPA 1001 Standard for Fire Fighter Professional Qualifications.1 NFPA FF I reflects minimum training standards for a fire fighter who is always working under supervision. NFPA FF II addresses the assumption of command and transfer of command but does not contain specific job performance requirements (JPRs) to illustrate the required skills. The IFSI 24-hour Basic Fire Fighter course may not properly prepare new fire fighters for the hazards associated with structural fire fighting. Many fire fighters, especially in the volunteer ranks, may be called upon to fill company officer and incident commander roles when they may not have received adequate training to prepare them for the additional responsibilities that are required of fireground officers. At a minimum, fire fighters who serve as company officers and who may be expected to serve as the initial incident commander should receive training equivalent to NFPA Fire Fighter II, as defined by NFPA 1001.

Fire department members that are assigned to or assume supervisory positions at an incident scene must have an additional level of competencies that are necessary to ensure for the safety of themselves and the members they supervise while mitigating the hazard encountered. A company officer must have the correct combination of practical experience, training and skill sets that correspond with their job requirements and expected functions in order to execute the expected duties in a safe, effective, efficient and competent manner. The company officer fulfills a mission critical role within the fire service that directly affects department personnel, public safety and community accord. The title carries with it the opportunity to ride the “front seat” and be in charge of directing a company to address incident operations and demands dictated by the company’s function, responsibility, and task assignment. NFPA 1021, Standard on Fire Officer Professional Qualifications provides clear and concise job performance requirements (JPR) that can be used to determine if an individual, when measured to the standard, possess the skills and knowledge to perform as a fire officer.31 Fire departments should ensure that all fire fighters who are expected to perform the duties of a company officer or greater responsibility have the necessary knowledge, experience and receive adequate training equivalent to NFPA Fire Fighter II, as defined by NFPA 1001 and Fire Officer as defined by NFPA 1021.

Additional References:

 

Structural Collapse Insights and Aides from NIST

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In case you missed these  or are first to see these now, informative information on Structural Collapse previously issued by NIST. This supplements the continuing research and effort by UL, NIST and numerous other academic and research institutions. From Fire.gov. http://www.nist.gov/fire/collapse.cfm

 

Structural Collapse Fire Tests: Single Story, Wood Frame Structures

A series of fire tests was conducted in Phoenix, Arizona to collect data for a project examining the feasibility of predicting structural collapse. The fire test scenario was selected as part of a training video being prepared by the Phoenix, Arizona Fire Department. Multiple fires were started in each structure to facilitate collapse; the fires were not intended to test the fire endurance of the structures. Four structures with different roof constructions were used for the fire tests. Temperatures were measured as a function of time in four locations within each structure. Furniture items were placed in the front and back of each structure to simulate living room and bedroom areas. The living room and bedroom areas of each structure were ignited simultaneously using electric matches. Peak temperatures obtained during the tests ranged from approximately 800 °C (1500 °F) to 1000 °C (1800 °F). The roof of each structure collapsed approximately 17 minutes after ignition. In addition to the full scale tests, the plywood and oriented strand board (OSB) roofing materials were tested using a cone calorimeter to characterize the fire properties of the materials.

REPORT

Structural Collapse Fire Tests: Single Story, Wood Frame Structures.

VIDEOS

Windows:
Wood Frame Structure Test 1, Shingles over Plywood
Wood Frame Structure Test 2, Singles over OSB
Wood Frame Structure Test 3, Tile over Plywood
Wood Frame Structure Test 4, Tile over OSB

Quicktime:
Wood Frame Structure Test 1, Shingles over Plywood
Wood Frame Structure Test 2, Singles over OSB
Wood Frame Structure Test 3, Tile over Plywood
Wood Frame Structure Test 4, Tile over OSB


Structural Collapse Fire Tests: Single Story, Ordinary Construction Warehouse

Two fire tests were conducted in a warehouse located in Phoenix, Arizona to develop data for evaluation of a methodology for predicting structural collapse. A firewall was constructed to divide the warehouse into two fire compartments. Temperatures were measured as a function of time in three locations during the first test and in two locations during the second test. In addition, the volume fraction of carbon monoxide was measured at selected locations during each test. Stacks of wood pallets were used as the primary fuel source and were ignited using paper and an electric match. Some combustible debris and the building structural elements provided the remainder of the fuel load. Peak temperatures obtained at different elevations ranged from approximately 300 °C (570 °F) to 800 °C (1470 °F). Peak carbon monoxide volume fraction reached 4 % in the first test and 5 % during the second test. The roof of the front half of the structure burned through approximately 18 min after ignition of the fire for the first test. The roof of the back half of the structure burned through about 15 min after the start of the second test.

REPORT

Structural Collapse Fire Tests: Single Story, Ordinary Construction Warehouse

VIDEOS

Windows:
Warehouse, Back Half
Warehouse, Front Half

Quicktime:
Warehouse, Back Half
Warehouse, Front Half


Trends in Firefighter Fatalities Due to Structural Collapse, 1979-2002

Between the years 1979 and 2002 there were over 180 firefighter fatalities due to structural collapse, not including those firefighters lost in 2001 in the collapse of the World Trade Center Towers. Structural collapse is an insidious problem within the fire fighting community. It often occurs without warning and can easily cause multiple fatalities.  

As part of a larger research program to help reduce firefighter injuries and fatalities the U.S. Fire Administration (USFA) funded the National Institute of Standards and Technology (NIST) to examine records and determine if there were any trends and/or patterns that could be detected in firefighter fatalities due to structural collapse. If so, these trends could be brought immediately to the attention of training officers and incident commanders and investigated further to determine probable causes.

REPORT

Trends in Firefighter Fatalities Due to Structural Collapse 1979-2002


Collapse Prediction Technology

A field-based monitoring technique that utilizes measurements of fire-induced vibration was developed and first demonstrated under a previously funded research effort. This report details the findings of the ensuing 3-year endeavor in which significant improvements were made to both field-test and analysis procedures. A real-time monitoring tool has been developed and numerous full-scale burn tests on a variety of structures have been completed. A significant contribution of the research stems from the use of system stability theory to aid in the interpretation of the field measurements. The techniques described in this report can be used to monitor burning structures and to provide visual indicators that track changes in structural stability.

REPORT

Early Warning Capabilities for Firefighters:Testing of Collapse Prediction Technologies

VIDEO

Windows:
Strip Mall Collapse Experiment

Quicktime:
Strip Mall Collapse Experiment

Remembering Brackenridge 1991 Floor Collapse and LODD

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Remembering Brackenridge, Pennsylvania December 20, 1991: Four Firefighters Killed, Trapped by Floor Collapse

Four volunteer firefighters died when they were trapped by a partial floor collapse during a structure fire in Brackenridge, Pennsylvania, on the morning of December 20, 1991. All four were members of a mutual aid truck company that had responded to the early morning incident and were assigned to prevent fire extension from the basement to the ground floor of a 2-story building.

Although they were wearing full protective clothing and using self-contained breathing apparatus, it appears that they were overwhelmed by the severe fire conditions that erupted when a section of the ground floor collapsed into the basement.

The collapse cut off their primary escape path, and the fire burned through their hose line, leaving them without protection from the flames.  

SUMMARY OF KEY ISSUES

  • Situation: Fire in enclosed room in basement. Unable to locate fire because of smoke. Smoke and heat increasing, but no visible fire.
  • Structure: Appeared to be heavy concrete construction. Actually thin concrete floors supported by unprotected steel.
  • Contents: Furniture refinishing business. Quantities of flammable finishes and solvents in basement.
  • Exits: One entrance/ exit on each level; no alternate exits.
  • Structural Collapse: Floor section collapsed between interior crew and their only exit. Fire overwhelmed crew.
  • Rescue Attempts: Valiant rescue efforts proved unsuccessful. Unsure if missing members fell into basement or were trapped on ground floor.
  • Incident Command: No formal command system or personnel accountability in place. Chief of first-due company in command of incident; Assistant Chiefs assigned to basement and ground floor.
  • Information: No pre-fire plan and no detailed knowledge of occupancy. Clues of structural danger not recognized as fire conditions increased
  • Communications: Radio system inadequate for current needs.
  • Response: Independent volunteer companies. Mutual aid requested on arrival and additional companies called in succession.
  • Weather: Extremely cold night, predawn hours. Problems with frozen hydrants.
  • Water System: Weak supply. Extensive mutual aid and long relays needed to protect exposures.

The analysis of this incident provides several valuable lessons for the fire service. Unfortunately these are all revisited lessons, not new discoveries. These firefighters died in the line of duty, while conducting operations that appeared to be routine, and were unaware of the situation that was developing below them. They died in spite of the fact that they were experienced, they were operating with a standard approach to operational safety, and they were the object of repeated rescue attempts by highly capable comrades.

There are several factors that could have provided warning or changed the outcome of this situation. Like most accidents, this situation was the result of a number of problems that came together under the worst possible circumstances. Firefighting obviously involves inherent dangers that must be accepted by its practitioners. The important messages for the fire service are to identify risk factors in advance of an incident and to develop mechanisms to react appropriately when critical situations present themselves.

This situation bears distinct similarities to other incidents that have claimed the lives of several firefighters in the past. The lessons that must be derived from this incident are not a condemnation of the actions or judgment of anyone who was involved in the situation; they simply identify information that can help to prevent this type of accident from occurring in the future.

  • USFA Report; HERE
  • NFPA Summary; HERE
  • NFPA Report Order; HERE 
  • Issues related to recent trends in floor collapse incidents, HERE

Buffalo Box 191 North Division & Grosvenor Streets; December 27, 1983

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Remembering

Buffalo Box 191 North Division & Grosvenor Streets; December 27, 1983

Buffalo Box 191

As Buffalo (NY) firefighters arrived at the scene of a reported propane leak in a three-story radiator warehouse (Type III Ordinary and Type IV Heavy Timber construction), a massive explosion occurred, killing five firefighters instantly and injuring nine others, three of them critically.

The force of the blast blew BFD Ladder 5′s tiller aerial 35 feet across the street into the front yard of a dwelling. BFD Engine 1′s pumper was also blown across the street with the captain and driver pinned in the cab with burning debris all around them. Engine 32′s engine was blown up against a warehouse across a side street and covered with rubble.

Previously posted on Thecompanyofficer.com HERE

SFFD Diamond Heights LODD Safety Violations

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State investigators have cited the San Francisco Fire Department for “serious” worker safety violations in the deaths of two firefighters killed battling a Diamond Heights house fire in June. Reports were published in the San Francisco Chronical, HERE  and HERE.

 Firefighters lost track of Lt. Vincent Perez, 48, and firefighter-paramedic Anthony Valerio, 53, after they went into the four-level home at 133 Berkeley Way on June 2 and failed to respond quickly to the men’s last radio communication, investigators with the state Department of Industrial Relations’ Division of Occupational Safety and Health said in a report issued Monday.

In recommending that the Fire Department be fined $21,000, the state investigators also said the department had violated state rules requiring that two firefighters be designated outside to assist any two firefighters who venture into a life-threatening environment.

Only one firefighter from Perez and Valerio’s engine company – the first on the scene – was available to come to their help during the blaze, the investigation found.

The state also cited the Fire Department for an incident – evidently before the fatal flareup – in which an unidentified battalion chief ventured into the burning building alone, without keeping in contact with Perez and Valerio. That was also deemed a serious violation of safety rules.

“These are serious in that they had protocols in place, but they weren’t following them,” said Erika Monterroza, spokeswoman for the worker safety agency. “There’s no question that a lack of communications was a big issue here. The investigator found there was a breakdown there.”

Fire Chief Joanne Hayes-White said the department would appeal the findings. She said state officials have told her commanders that the violations fell short of finding the department’s actions responsible for the two firefighters’ deaths. “None of the citations involved a direct cause of the line-of-duty deaths,” Hayes-White said. Monterroza confirmed that, saying the exact circumstances of the firefighters’ deaths could not be determined.

Valerio, Perez and a third member of Engine Company 26 in Diamond Heights were the first firefighters to arrive at the mid-morning blaze, which started when a sparking electrical outlet set curtains on fire.

The third firefighter manned the pumper hose while Valerio and Perez went inside to fight the fire, but the safety regulations require a fourth firefighter to be available outside to assist.

A scene commander, identified by firefighters as Battalion Chief Thomas Abbott, ordered a crew from Engine Company 24 to back up Valerio and Perez inside the building. For several minutes, however, scene commanders tried to find the Engine 26 firefighters, without success.

There was an unspecified gap between that last communication and any effort by firefighters to respond over the radio or track down the men, the state investigation found.

The reports goes on to state that Hayes-White said the department’s investigative report – still in draft form – concluded that the fire had melted one of the firefighters’ microphone cords, cutting off communications. She said any delay in firefighters’ response would be addressed in the final report.

Firefighters ultimately found Perez and Valerio in a landing area and carried the injured men outside. Perez was pronounced dead at San Francisco General Hospital, and Valerio died there two days later.

The state probe also faulted the actions of the unnamed battalion chief who went into the building “alone and also did not remain in contact with the firefighters who were inside.”

Hayes-White said the battalion chief had gone inside only briefly, had seen Perez and Valerio alive and had never been out of other firefighters’ view.

Read more: http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2011/12/02/BANQ1M7JBO.DTL#ixzz1fUEug7hu

Previous Coverage on CommandSafety.com below:

 

Residential Pre-Arrival: What are your Considerations?

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 A video clip of a structure fire occurring in a single family residential occupancy shows, in the first few frames a back draft occurring per-arrival of fire services. It’s apparent there is a developing and progressing fire in the Charlie division which may have originated in the, or vicinity of the detached garage (B-C) which had a breezeway connected to the main house.  

 

Alpha Street View

 

The large volume hip style (concealed space) roof may have become rapidly charged with elevated temperatures, superheated gases, products of combustion and possibly the initial stages direct flame extension through the eaves and into the truss loft.  Incident scene operations photos depict an engineered structural roof system.

 

Aerial View- Divisions

 

Building Profile

  • Single family (SFD), Residential Occupancy
  • Built: 1981
  • 2, 263  Sq. Ft.
  • 4 Bedrooms
  • 2 Bathrooms
  • 7 Rooms
  • Detached Garage
  • Wood frame, slab on grade
  • Type/Class- V/5
  • Brick Veneer
  • Divisions:
  • A-      Street
  • B-       SFD Residential; similar
  • C-       Yard, with Detached Garage (B-C) and large room extension
  • D-      SFD Residential; similar

 

Aerial Alpha and Charlie with Roof

 
 

Roof Profile

 

Pre-arrival fire conditions exhibit indicators that suggest the need for the rapid intervention of arriving companies and a coordinated aggressive posture tactically if the incident action plan is formulated to achieve an interior attack. Given the scenario of the backdraft conditions, the likelihood for a degraded or compromised ceiling membrane enclosure (intact ceilings, thus limiting fire extension)  being present will hamper and may be an operational concern for interior operating companies as fire conditions continue to grow in magnitude and severity and full extend and take command of the truss loft enclosure.

These fire conditions will extend into the space, resulting in degradation of the structural components and roof assembly-which will present a high risk potential for isolated or catastrophic collapse. This intrusion into the truss loft would require interior operating company officers to maintain attentiveness towards the effectiveness and progress of tactical suppression and support tasks with the potential for fire quickly dropping into operating areas and affecting firefighter safety.

Coordinated and timely vertical ventilation and roof work may be warranted if part of the normal operating parameters of the fire service agencies. In some areas of the county, vertical ventilation is not considered a tactical functional objective and is not implemented.

Adequate fire flow for suppression must be established early on in the operations, if an interior attack is implemented. Projected fire intensity and severity may challenge initial engine companies if hand lines and fire flow rates and the placement of hose streams are ineffective or marginal.  In the event of master stream operations it would be crucial to ensure interior fire suppression operations are suspended, a transition to a defensive mode is communicated and acknowledge on the fireground with collapse zone considerations.

Operational Considerations

In viewing the video of pre-arrival conditions and fire parameters and indicators; as an arriving company officer or commanding officer, how would you establish your incident action plan (IAP) and establish operations? Present and discuss why you would make these decisions, what is/are the basis?

What would you be considering in the areas of:

  • Building Integrity
  • Collapse Potential
  • Interior Fire Attack Considerations
  • Resource Needs: Staffing and Apparatus
  • Critical Operational Tasks
  • Apparatus Placement
  • Hose Line Placement
  • Safety Considerations  
  • Exposures
  • Contingency Issues: What can go wrong?  

 Assuming you are just arriving on scene and observe the backdraft conditions from the front seat; What would your operational IAP be and why?

Identify and discuss the types of mission critical size-up consideration that must be recognized and processed?

How does apparatus placement affect incident operations?

What first-due operational factors have you experienced that were contingent upon other tasks or considerations that were apparent to you or you implemented?

How does extreme fire behavior and fire dynamics affect your fire ground position?

 How does this scenario and building size and type relate to similar structures and occupancies in your district or mutual aid/greater alarm response area?

Link

 

  • Charlie Division

 

Training Download and Discussion Questions

 

Training Download from Buildingsonfire.com

 

 

 

FDNY: Building Collapse Claims Life Of 1 Of 5 Workers Rescued

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Robert Mecea/Associated Press

 
 A five-story building under construction suddenly came down on Monday afternoon in Brooklyn, New York. Three workers became trapped under the rubble after the top two floors fell onto the third, sending it all crashing to the ground, officials said. Published reports indicate that the likelihood of  the weight of the concrete caused the 3rd floor to collapse onto the 2nd floor, resulting in a catastrophic and sequential progressive floor collapse.
 
FDNY companies searched through the pile of concrete, pulling five workers out. Investigators said concrete being poured between the metal pillars buckled the building.
 
The building, at 2929 Brighton Fifth Street, near Neptune Avenue (Brooklyn) fell just before 2:30 p.m. A concrete worker on the site stated according to reports that the collapse happened immediately after concrete from his truck was pumped up onto the second and third floors of the building.
 
Four workers were in the building at the time of the collapse, and one was in front of the building. The one in front refused medical attention.  Firefighters said the framework of the building had been erected, but not much else. Removing the men from the rubble was a delicate and difficult process because of the risk of further collapse. Even after the men were removed, a large piece of corrugated metal hung in front of the building.
 
 

FDNY Twitter Feed

 Additional Links

 

Training Download: Commercials- Got Fire? Anticipate Collapse

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Commercials and Collapse Awareness

 

In response to numerous requests from our recent posting; Commercials- Got Fire? Anticipate Collapse briefing post (HERE). We have developed and produced a comprehensive download in PDF format of the entire article that can be used for training, distribution and discussions.

 Click on the image above and download the PDF file and use accordingly  or download HERE

 There are numerous factors to be cognizant of in operations involving commercial buildings and occupancies; with special considerations and a diligent focus on a wide degree of facets on the fireground during combat fire engagement.

You need to start somewhere, thus the investment in these observations and insights for this event. Open your eyes on the fireground, there is so much to take in and respond to; if you know what to look for and can process what you’re seeing.

It is mission critical to comprehend and understand your department’s operational capabilities and the necessary deployment demands for fire suppression, fire flow and phased operations at commercial building fires.

Commercial Fire and Collapse

Respect these buildings for the occupancy risk they present and not the typical occupancy type that we develop our conventional strategies, incident action plans and tactical deployments.

It’s a lot more than that, with far greater consequences; that may be very unforgiving.

 

From the Street and From the Office: Views on Firefighting Live Tonight

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On FirefighterNetcast.com Wednesday November 2, 2011 Postponed from October

 

On Live Tonight November 2, 2011 at 9 PM ET on FireFighterNetcast.com

Taking it From the Streets and Delivering it From the Chief’s Office;

An exciting and dynamic discussion that integrates the insights from Christopher Naum’s Taking it to the Streets perspectives to Chief Doug Cline’s Chief’s Bugle visions. FirefighterNetcast.com is proud to present an insightful look at today’s leading issues affecting the American Fire Service from the perspective of the street firefighter, officer and commander and the perspective from the executive and chief officers and commanders- the Chief’s perspective.

This program’s theme and discussion will concentrate on the challenges of maintaining a balanced approach towards integrating effective risk management, with the demands for effective and highly efficient firefighting; while promoting safety, hazard reduction and injury and LODD reduction with conventional decision-making.

Tune in Wednesday night October 26, 2011, 9pm ET on FirefighterNetcast.com for a 10-Alarm Discussion with these visionary national fire service leaders and their special guests.

Join in on the live open discussion with other fire service personnel from around the country.

Taking it to the StreetsTM is a monthly radio show featured on BlogTalk Radio and is hosted by nationally renowned fire service leader Christopher Naum, a 36-year fire service veteran and highly regarded national instructor, author, lecturer and fire officer and the distinguished leading national authority on building construction and fire ground operations. Taking it to the StreetsTM is a Buildingsonfire.com Series and FireFighternetcast.com Production, © 2011 All Rights Reserved

Check out the latest downloads of recent programs in the archives by visiting Taking it to the Street’s webpage on Firefighternetcast.com or for program insights at CommandSafety.com.

  • Tune in to the Program Wednesday evening November 2nd at 9:00 pm ET, HERE
  • Firefighternetcast.com HERE
  • Taking it to the Streets Radio Programs, HERE and HERE
  • Buildingsonfire.com, HERE

 

Check out Chief Cline’s Training and Tactics Talks Programs, HERE

FDNY: The 23 Street Collapse October 17,1966 Box 55 598

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Accessed from FDNY - Remembering the "23rd Street Fire" October 17, 1966, Facebook Page

On October 17th 1966, Manhattan Box 598 was struck at 21:36 hours for the report of a building fire at 7 East 22nd Street, an art dealer in a four story brownstone. On arrival, the heat and smoke was so intense companies could not make entry through the art dealer, and so attempted to make entry by way of the abutted building 6 East 23rd Street, The Wonder Drug store.

Crews were dealing with a very intense and spreading fire. With companies operating above the fire, little indication of a catastrophic collapse was present. Suddenly, a 16×35 foot section of the floor collapsed at around 22:39 hours causing ten firefighters to fall into the burning cellar. Two other firefighters on the first floor were killed in a burst of heat.

Firefighters evacuated immediately, except for some whom were trapped on the roof with direct flame impingement. Hand lines from the ground and a truck company ladder was able to rescue the group in time. Rescue operation ensued long into the morning. Several evacuations were ordered, and further collapses occurred. Aside from 9/11, this was the largest single line of duty death event in the FDNY’s history.

Stored in the basement of the art dealer were large quantities of highly flammable lacquer, paint, and finished wood frames. The first floor was supported by 3″ x 14″ wood beams. 3/4″ wood planking atop these beams was covered with five inches of concrete finished with terrazzo and insulated against all heat to the firefighters operating above. As part of a recent project, a common cellar under the two buildings was renovated, removing a load-bearing dividing wall that had supported the floor above. The cellar of the art dealer extended under the drug store illegally from this renovation.

The fire burned unknowingly in the Wonder Drug basement for over an hour when it finally collapsed. It took 14 hours to locate all downed firefighters in the rubble; the cause of the fire is unknown.

Building Construction Insights

  • Location of Fire Origin: Cellar of 7 East 22 St.
  • Location of Collapse: First floor of Exposure 3 building: 6 East 23 St. “The Wonder Drug Store.”

Fire Building Construction:

  • 7 East 22 St: a brownstone, 20 x 60 brick and joist, four story residence.
  • The cellar, where the fire started, and first floor were occupied by an art dealer.
  • The cellar extended under the first floor of Wonder Drug for approximately 35 feet.

Collapse Building Construction:

  • 6 East 23 St: a five story, 45 x 100 commercial building, brick & joist construction.
  • The rear, 16 x 35 foot, section of the first floor collapsed into the cellar occupied by 7 East 22 St.
  • The rear and side walls butted up to a 3-story white brick commercial building to the West at 3940-948 Broadway and to a 5-story brown brick building to the North at 6 East 23rd Street

    Diagram NY Times (2006) Accessed from the internet 10.18.2011

 

Building Alteration

(1) The fire building, 7 East 22 St, had a two story extension which abutted the rear of 6 East 23 St.

(2) The Cellar of 7 East 22 St extended under the first floor of 6 East 23 St for approximately 35 feet.

(3) The floor construction of 6 East 23 St was 3″ x 14″ wood beams topped by 3/4″ wood planking. On top of this, five inches of concrete with a terrazzo finish was added.

 The firefighters in exposure 3, (6 East 23 St), killed in the collapse did not know they were operating directly over the cellar fire in 7 East 22 St. The five inch concrete terrazzo floor acted as an insulator.

It concealed the severe fire and heat below. The 3 inch x 14 inch floor beams spaced 16 inches on center were reduced in size and strength by the fire.

The first sign of weakness was the sudden collapse of a 15 x 35 foot section, which plunged the ten firefighters to their deaths. Two other firefighters were killed on the first floor by a ball of flame.

The 5-alarm fire wasthe single worst loss of New York City firefighters in the line of duty prior to Sept. 11, 2001. 
 

FDNY LODD Twelve Members of Every Rank

Twelve members of every rank, from a probationary firefighter to a deputy chief, made the Supreme Sacrifice when the ground floor of the Wonder Drug store collapsed. The fire originated in a basement storage area, which was concealed by a four-inch thick cinderblock wall, illegally constructed by the building’s previous owner.

  • DC Thomas A Reilly, Division .3
  • BC Walter J Higgins, Battalion. 7
  • Lt John J Finley, Ladder 7
  • Lt Joseph Priore, Engine 18
  • Fr John G Berry, Ladder 7
  • Fr James V Galanaugh, Engine 18
  • Fr Rudolph F Kaminsky, Ladder 7
  • Fr Joseph Kelly, Engine 18
  • Fr Carl Lee Ladder, 7
  • Fr William F McCarron, Division 3
  • Fr Daniel L Rey, Engine 18
  • Fr Bernard A Tepper, Engine 18

 

From NYFD.com http://nyfd.com/history/23rd_street/23rd_street.html

 

 

A wreath is laid at the new plaque honoring the 12 FDNY members killed at the 23rd Street fire on Oct. 17, 1966. © FDNY Photo Unit.

FDNY Remembers the 23rd Street Fire on its 45th Anniversary

Remembrance: FDNY and Buffalo(NY) Double LODD from Floor Collapse

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Dangers of Floor Collapse

Take the time to revisit two Firefighter LODD incidents that both occurred in the month of August in 2006 and 2009 respectively. Excerpts from the NIOSH Reports have been included that are part of the NIOSH FIRE FIGHTER FATALITY INVESTIGATION AND PREVENTION PROGRAM (HERE).

Both of these incidents involved a double firefighter line-of-duty death (LODD) and resulted from a floor collapse during the conduct of operations within the fire involved structures. There are numerous lessons learned and recommendations that can be considered and applied in organizations and agencies across the country, both large and small; career or volunteer.

These incidents bring to light the occupancy risks present in some of our most common of building occupancies, and continue to provide the basis for operational considerations and management based upon occupancy risk versus occupancy type. There are numerous operational considerations when addressing fires located in basement or underdeck areas and the subsequent management of those incidents based upon known or assumed building characteristics, occupancy risk and profile, inherent or presumed building stability and potential for structural compromise and the operational risk from isolated or catastrophic of collapse.

  • Buffalo (NY) Fire Department: August 24, 2009
  • FDNY: August 27, 2006

Some Other Links related to Floor Collapses and Reference Links for Operational Insights and Operating Experience (OE)

Here are some Safety Considerations related to Residential Occupancies (non-inclusive) for Operations at Basement Fires that will support fireground operational safety:

  • Conduct a thorough fire size-up and communicate the findings to all personnel on-scene before entering the building.
  • Conduct an assessment of the Building Profile ( building construction type, structural assembly systems and features and age) and assesss fire behavior and intensity levels.
  • Ensure an adequte Risk Assessement is conducted and that Risk versus Gain is determined
  • Maintain situational awareness throughout the tactical deployment of crews within the interior of the structure
  • Conduct a 360 degree perimeter assesement when feasible to determine access and egress points, fire location and travel and other mission critical operational perameters.
  • Incident commanders and company officers should be trained and experienced in structure fire size up to avoid putting fire fighters at unneeded risk of working above fire-damaged floors.
  • Do not enter a structure, room, or area when fire is suspected to be directly beneath the floor or area where fire fighters would be operating, or if the location of the fire is unknown.
  • Never assume structural safety of any floor (regardless of the construction) having a significant fire under it.
  • Conduct pre-incident planning inspections during the construction phase to identify the type of floor construction.
  • If pre-planning is not conducted, assume residential construction and small commercial buildings built since the early 1990s may contain engineered wood I-joists.
  • Report construction deficiencies noted during preplanning to local building code officials. For example, engineered wood floor joists should only be modified per manufacturer specifications—usually limited to cutting to length and removing pre–cut knockouts for utility access. Report damaged or cut chords or webs to building officials.
  • Develop, enforce, and follow standard operating procedures (SOPs) on how to size up and combat fires safely in buildings of all construction types. Rapid intervention teams (RIT) should include a portable ladder with their RIT equipment when deployed at basement fires.
  • Ensure Time Compression is considered: Ensure Command has the ability to monitor progress or elapsed incident time and adjusts strategic and tactical plans accordingly and in a time effective manner. 
  • Provide training on identifying signs of weakened floor systems (soft or spongy feel, heat transmitted through floor, downward bowing, etc.).
  • Make fire fighters aware that all floor types can fail with little or no warning.
  • Use a thermal imaging camera to help locate fires burning below or within floor systems, but recognize that the camera cannot be relied upon to assess the strength or safety of the floor. (Refer to the recent UL Test Data and Operational Safety Considerations ”Structural Stability of Engineered Lumber in Fire Conditions” available at http://www.uluniversity.us/ )
  • Fire fighters should be trained on the use of thermal imaging cameras, including limitations and difficulties in detecting fire burning below floor systems. (See reference to UL above)
  • Immediately evacuate and, if possible, use alternate exit routes when floor systems directly beneath the floor where fire fighters would be operating are weakened by fire.
  • Use defensive overhaul procedures after fire extinguishment in structures containing fire-damaged floor systems of all types.
  • Consider becoming active in the building code process and influence requirements for fire resistance of floor and ceiling systems to further fire fighter safety and health.
  • Ensure RIT personnel area staged and have complete a site assessment of the building and occupany upon thier arrival and set-up
  • Ensure that a rapid intervention team (RIT) is on the scene as part of the first alarm and in position to provide immediate assistance prior to crews entering a hazardous environment
  • 

REMEMBRANCE  

Buffalo (NY) Fire Deparment- August 24, 2009  1815 Genesee Street, Buffalo, NY 

Career Lieutenant Dies Following Floor Collapse into Basement Fire and a Career Fire Fighter Dies Attempting to Rescue the Career Lieutenant – New York (REPORT HERE)

The Structure, (pre-fire conditions)

SUMMARY

On August 24, 2009, a 45-year-old male career lieutenant (Victim #1) died following a partial floor collapse into a basement fire, and a 34-year-old male career fire fighter (Victim #2) was fatally injured while attempting to rescue Victim #1. The career fire department was dispatched for “an alarm of fire” with reported civilian(s) entrapment. Arriving units discovered a heavily secured mixed commercial/residential structure with smoke showing. Following failed initial attempts to locate an entry to the basement, crews located a door on Side 2 that provided access down a flight of stairs to a basement entry door. Repeated attempts were made to force open this basement door in order to search for trapped civilians, but crews had difficulty gaining access through this door because it was made of steel and locked and dead-bolted on both sides. Other crews on scene performed primary searches of the 1st and 2nd floors with no civilians found.

Approximately 30 minutes into the basement fire, command ordered all interior crews to exit the structure to regroup because crews were still unable to gain access into the basement from Side 2. Additional manpower was sent with special tools to assist in breaching the basement door on Side 2. Victim #1 and two fire fighters from his crew entered into the structure from Side 1 to verify all fire fighters had exited a 1st floor deli. Victim #1, following a hoseline into the structure, was well ahead of the other two fire fighters when the 1st floor partially collapsed beneath him. Victim #1 fell with the floor into the basement, exposing him to the basement fire. The other two fire fighters immediately exited the deli after fire conditions quickly changed and shelving and displays fell on them; they were unaware of what had just occurred. Victim #1 made several Mayday calls from within the structure and activated his PASS device. Confusion erupted exteriorly on scene when trying to verify who was calling the Mayday, their exact location, and how they got into the basement. The incident commander was aware that he had crews attempting to gain access into the basement from Side 2 but was unaware that there had been a floor collapse within the deli section of the structure.

Simultaneously, Victim #2, a member of the fire fighter assistance and search team (FAST), was standing by outside Victim #1’s point of entry when the Mayday calls came out. It is believed that Victim #2 knew where Victim #1 was since he had gone in the structure with him earlier in the incident. Victim #2 grabbed a tool, went on air, and rushed into the structure. The FAST and additional personnel on scene concentrated on Side 2 initially while other fire fighters followed an unmanned hoseline into the deli. Crews within the deli quickly discovered a floor collapse and reported hearing a PASS device alarming. Victim #1 was immediately identified as missing during the first accountability check, but Victim #2 was not accounted for as missing until the third accountability check, more than 50 minutes after Victim #1’s Mayday. After the fire was controlled, both victims were discovered side-by-side in the basement where the 1st floor had partially collapsed. They were found without their facepieces on and with SCBA bottles empty. Victim #1’s PASS device was still alarming. They were pronounced dead on scene. Four fire fighters and one lieutenant suffered minor injuries during the incident. No civilians were discovered within the structure.

F2009-23 Aug 24, 2009 Career lieutenant dies following floor collapse into basement fire and a career fire fighter dies attempting to rescue the career lieutenant – New York PDF Adobe PDF file

Key contributing factors identified in this investigation include working above an uncontrolled, free-burning basement fire; interior condition reports not communicated to command; inadequate risk-versus-gain assessments; and, crew integrity not maintained.

NIOSH has concluded that, to minimize the risk of similar occurrences, fire departments should:

  • Ensure that all personnel are aware of the dangers of working above a fire, especially a basement fire, and develop, implement, and enforce a standard operating procedure (SOP) that addresses strategies and tactics for this type of fire.
  • Ensure that the incident commander (IC) receives interior status reports and performs/continues evaluating risk-versus-gain.
  • Ensure that crew integrity is maintained at all times on the fireground.
  • Ensure that the incident commander (IC) receives accurate personnel accountability reports (PAR) so that he can account for all personnel operating at an incident.
  • Ensure that a separate incident safety officer, independent from the incident commander, is appointed at each structure fire.
  • Ensure that fire fighters use their self-contained breathing apparatus (SCBA) and are trained in SCBA emergency procedures.

Additionally, manufacturers, equipment designers, and researchers should:

  • Conduct research into refining existing and developing new technologies to track the movement of fire fighters inside structures.
  • Continue to develop and refine durable, easy-to-use radio systems to enhance verbal and radio communication in conjunction with properly worn self-contained breathing apparatus (SCBA)

    Fire and Rescue Operations

     

Front of structure
Incident scene.
(Photo courtesy of fire department. From NIOSH REPORT)

 

RECOMMENDATIONS

Recommendation #1: Fire departments should ensure that all personnel are aware of the dangers of working above a fire, especially a basement fire, and develop, implement, and enforce a standard operating procedure (SOP) that addresses strategies and tactics for this type of fire.

Discussion: Basement fires can be taxing and test a fire fighter’s knowledge and skill on how to combat it safely and effectively. Fire burning underneath floors can significantly degrade the floor system with little indication to fire fighters working above.1 They need to be aware of rapid heat buildup, little or no ventilation, limited accessibility, and whether it is a storage place for unknown hazards (e.g., combustibles, hazardous materials, and flammable liquids). Also of concern for fire departments is how to determine how long a fire has gone undetected. Fire fighters should be aware of what is stored on the floor directly above a basement fire, what the finished floor is comprised of (e.g., terrazzo, plywood, tongue-and-groove, tile, etc.), and what the floor structural members are comprised of (e.g., engineered wood floor joists, concrete, or steel). Structural support members may be directly exposed to fire, causing them to weaken and increase the likelihood of an above-floor collapse. Interior crew(s) intending to operate on the floor above a basement fire should limit their operating time, especially if ventilation, suppression, and accessibility are not progressing. The floor’s structural members will continue to weaken as fire and heat intensify. Specifying an exact length of time for how long suppression crew(s) should operate above a basement fire is questionable, and the IC should make that determination by performing a hazard analysis/risk assessment. The fire department did not have an SOP specifically addressing strategies and tactics when combating basement fires. SOPs should be developed to address structural fire fighting operations specific to basement fires, because these types of fires present a complex set of circumstances and following established SOPs will minimize the risk of serious injury to fire fighters.

During this incident, fire fighters were unable to access the basement, unable to ventilate the basement fire, and unaware of the fire load found within the basement. Initially, the department did not cut a hole in the 1st floor apartment or deli and use their Bresnan distributor, in fear of injuring reported trapped civilians. Note: The Bresnan distributor is a type of cellar nozzle used to suppress fire through steam conversion. The use of a cellar nozzle, like a Bresnan distributor, during the initial stages of the basement fire may have assisted in containing the fire and/or allowing better operating conditions for fire fighters to access the basement.2 Attempts were made to flow water on the 1st floor where fire had vented through, but this effort was not successful. Fire fighters should also recognize that fire venting through a floor is a late indication of a weakened floor system.

Recommendation #2: Fire departments should ensure that the incident commander (IC) receives interior status reports and performs/continues evaluating risk-versus-gain.

Discussion: Among the most important duties of the first officer on the scene is conducting an initial size-up of the incident. A proper size-up begins from the moment the alarm is received, and it continues until the fire is under control. The size-up should also include assessments of risk-versus-gain during incident operations, especially after primary searches have been conducted.2-7 The size-up should include an evaluation of factors such as the fire size and location, length of time the fire has been burning, conditions on arrival, occupancy, fuel load and presence of combustible or hazardous materials, exposures, time of day, and weather conditions. Information on the structure itself should include size, construction type, age, condition (e.g., evidence of deterioration, weathering), evidence of renovations, lightweight construction, loads on roof and walls (e.g., air conditioning units, ventilation ductwork, utility entrances), and available preplan information are all key information that can affect whether an offensive or defensive strategy is employed. The incident commander should be willing to change his strategy and plan based on continued size-ups and risk assessments until the fire is brought under control. Conducting accurate size-ups and receiving interior/exterior status updates is critical to the safety of fire fighters on the incident, rescue/recovery efforts, and overall control of the incident. “The decision to commit interior firefighting personnel should be made on a case-by-case basis with proper risk-benefit decisions being made by the incident commander. The commitment of firefighters’ lives for saving property and an unknown or marginal risk of civilian life must be balanced appropriately.” 8 The fireground is very dynamic, and conditions can either improve or deteriorate based on fire suppression activities, and available resources, and most importantly assessments/size-ups of the incident are necessary to detect a change on the fireground.

During this incident, the fire department was attempting to gain access to reported trapped civilian(s) in a basement. The command post was established at the front of the structure providing views of Side 1 and Side 2. The basement contained heavy smoke and fire and was inaccessible from exterior and interior access doors. The initial IC and the IC who assumed command performed initial size-ups and received radio updates on fire and smoke conditions from personnel working on the incident, but not all interior findings were reported. Crews working in the 1st floor apartment encountered fire venting through the floor on Side 4 as early as 9 minutes after the first apparatus arrived on scene. Ten minutes later, Victim #1 was flowing water on fire that had vented in the corner of Side 3 and Side 4 of the deli. This was the same general area where crews within the 1st floor were working. The only thing separating the apartment and deli was a wall of floor coolers. The basement fire burned uncontrolled for more than 30 minutes while fire fighters continued attempts to gain access to the basement. Incident updates on the radio included transmissions such as “untenable” and “time to get out,” prior to the 1st floor partial collapse. The IC also mistook “water on the fire” as fire fighters actually attacking the basement fire from Side 2. This provided the IC with a false sense of progress on combating the basement fire. Also, during this incident, the IC was at times monitoring multiple radio channels and some additional transmissions may not have been received. Radio transmissions are very important for the IC to hear, acknowledge, and prioritize so that the IC can maintain situational awareness, and accurately and effectively manage and direct fireground operations. A chief’s aid or incident command technician assigned to the IC may have assisted the IC in monitoring the fireground channels and distinguishing key radio traffic and updates. It is reasonable to believe that, as time progressed and basement fire conditions continued to be uncontrolled, that the chances of survival diminished for any potentially trapped civilians exposed to the heat or products of combustion found within the smoke. According to fire investigators with the fire department, only the bodies of Victim #1 and Victim #2 were found within the structure.

Recommendation #3: Fire departments should ensure that crew integrity is maintained at all times on the fireground.

Discussion: Fire fighters should always work and remain in teams whenever they are operating in a hazardous environment.2 Team integrity depends on team members knowing who is on their team and who is the team leader; staying within visual contact at all times (if visibility is low, teams must stay within touch or voice distance of each other); communicating needs and observations to the team leader; and rotating together for team rehab, team staging, and watching out for each other (e.g., practicing a strong buddy system). Following these basic rules helps prevent serious injury or even death by providing personnel with the added safety net of fellow team members. Teams that enter a hazardous environment together should leave together to ensure that team continuity is maintained. 3

During this incident, raw video captured the FAST working on Side 1 of the structure (same side that Victim #1 had entered) during Victim #1’s “Mayday.” At the same time, Victim #2, assigned to the FAST, was seen pointing at Side 1, donning his SCBA, and entering the structure as other fire fighters were exiting from Side 1. The FAST was activated and ordered to Side 2 where it was believed the “Mayday” transmission came from. Victim #2 went missing following the “Mayday” and his whereabouts were unknown until the recovery of Victim #1. Also, Victim #1 entered the deli not realizing that two of his team members from R1 were not following behind. Not verifying your crew is with you and/or working alone increases the risk to individuals and possibly to others during search and rescue efforts. During interviews, the fire department commented on an increase in “freelancing” following the Mayday.

floor collapse from inside the building
Photo 6. Interior view of deli following partial floor
collapse and recovery operations.
(Photo courtesy of police photographer. From NIOSH REPORT)
basement storage basement storage
Photo 7 . Views of materials stored within basement.
(Photos courtesy of police photographer. From NIOSH REPORT)

 

Recommendation #4: Fire departments should ensure that the incident commander (IC) receives accurate personnel accountability reports (PAR) so that he can account for all personnel operating at an incident.

Discussion: An important aspect of an accountability system is the personnel accountability report (PAR). A PAR is an organized on-scene roll call in which each supervisor reports the status of his crew when requested by the IC or emergency dispatcher.2 The use of an accountability system is recommended by NFPA 1500 Standard on Fire Department Occupational Safety and Health Program9 and NFPA 1561 Standard on Emergency Services Incident Management System.10 A functional personnel accountability system requires the following:

  • development of a departmental SOP
  • training all personnel
  • strict enforcement during emergency incidents

As the incident escalates, additional staffing and resources may be needed, adding to the burden of tracking personnel. An incident command board should be established at this point with an assigned accountability officer or aide. As a fire escalates and additional fire companies respond, a chief’s aide or accountability officer assists the incident commander with accounting for all fire fighting companies at the fire, at the staging area, and at the rehabilitation area. With an accountability system in place, the incident commander may readily identify the location and time of all fire fighters on the fireground. A properly initiated and enforced accountability system that is consistently integrated into fireground command and control enhances fire fighter safety and survival by helping to ensure a more timely and successful identification and rescue of a disoriented or downed fire fighter. This department has developed and implemented SOPs governing accountability and even assigns an accountability officer to the IC to assist with radio transmissions and PARs.

An accountability officer was assigned to assist the IC during the incident. A PAR was immediately obtained following the rescue attempts for Victim #1. Victim #1 was identified as “missing,” but Victim #2 was incorrectly identified as “accounted for.” Victim #2 was incorrectly “accounted for” during a second separate PAR. Prior to a third PAR, 50 minutes following the floor collapse, Victim #2 could not be visibly accounted for on the fireground and his whereabouts were unknown. Officers need to visually account for their members prior to providing an “all accounted for” to the IC or accountability officer. Quickly being able to account for all personnel at an incident is paramount and can determine how an IC orders search and rescue efforts or other suppression activities.

Recommendation #5: Fire departments should ensure that a separate incident safety officer, independent from the incident commander, is appointed at each structure fire.

Discussion: According to NFPA 1561 Standard on Emergency Services Incident Management System, 11 “The incident commander shall have overall authority for management of the incident and the incident commander shall ensure that adequate safety measures are in place.” This shall include overall responsibility for the safety and health of all personnel and for other persons operating within the incident management system. While the incident commander is in overall command at the scene, certain functions must be delegated to ensure adequate scene management is accomplished. 10 According to NFPA 1500 Standard on Fire Department Occupational Safety and Health Program, 9 “as incidents escalate in size and complexity, the incident commander shall divide the incident into tactical-level management units and assign an incident safety officer (ISO) to assess the incident scene for hazards or potential hazards.” These standards indicate that the incident commander is in overall command at the scene but acknowledge that oversight of all operations is difficult. On-scene fire fighter health and safety is best preserved by delegating the function of safety and health oversight to the ISO. Additionally, the incident commander relies upon fire fighters and the ISO to relay feedback on fireground conditions in order to make timely, informed decisions regarding risk versus gain and offensive-versus-defensive operations. The safety of all personnel on the fireground is directly impacted by clear, concise, and timely communications among mutual aid fire departments, sector command, the ISO, and the incident commander. NFPA 1521 Standard for Fire Department Safety Officer defines the role of the ISO at an incident scene and identifies duties such as recon of the fireground and reporting pertinent information back to the incident commander; ensuring the department’s accountability system is in place and operational; monitoring radio transmissions and identifying barriers to effective communications; and ensuring established safety zones, collapse zones, hot zones, and other designated hazard areas are communicated to all members on scene.11 Larger fire departments may assign one or more full-time staff officers as safety officers who respond to working fires. In smaller departments, every officer should be prepared to function as the ISO when assigned by the incident commander. The presence of a safety officer does not diminish the responsibility of individual fire fighters and fire officers for their own safety and the safety of others. The ISO adds a higher level of attention and expertise to help the fire fighters and fire officers. The ISO must have particular expertise in analyzing safety hazards and must know the particular uses and limitations of protective equipment. 4

During this incident, the designated department ISO was not dispatched until the incident was upgraded to a 2nd alarm because it occurred after the normal duty shift of the ISO. The ISO did not arrive until rescue/recovery operations had begun on breaching the Side 4 wall. The presence of an ISO throughout this incident would have allowed the IC to focus on supervising the incident while the ISO directed safety operations.

Recommendation #6: Fire departments should ensure that fire fighters use their self-contained breathing apparatus (SCBA) and are trained in SCBA emergency procedures.

Discussion: Fire fighters are tasked at times to operate within environments which pose inhalation hazards (e.g., toxic smoke and oxygen deficiency12), defined by OSHA as immediately dangerous to life and health (IDLH). Proper training along with an implemented and enforced policy or procedure will assist fire fighters with proper maintenance, use, and removal of a SCBA. OSHA 29 CFR 1910.134 (g)(4)(iii) states, “all employees engaged in interior structural firefighting use SCBAs.”13 During this incident, the medical examiner stated both victims died from inhalation of products of combustion. The medical examiner also indicated that the victims’ COHb levels (a measure of carbon monoxide in the bloodstream) were over 50%. Even if nothing but carbon dioxide, water vapor, and nitrogen were present in the fire products and these were to mix with the air being breathed by a fire fighter, then the oxygen percentage would be reduced below the normal 21%. At 15% oxygen, fire fighters can experience lethargy, poor coordination, and confused thinking. The two principal toxins in smoke—carbon monoxide and hydrogen cyanide—act to deprive the brain of oxygen, and their effects would be enhanced due to the lower levels of oxygen in the air.14 Both victims were discovered without their facepieces on.

Due to the smoke conditions, both victims would have had to have been on air when entering the structure. It has not been determined why both victims were found without their facepieces on, but NIOSH investigators have theorized the following possibilities:

  • Victim #1 removed his facepiece to transmit his “Mayday.”
  • Both victims’ facepieces were unintentionally knocked off when falling into the basement.
  • The facepieces were removed because they ran out-of-air or other emergency situation.

Emergencies created by, or associated with, SCBAs can be overcome in several ways. Fire departments can develop and implement a comprehensive respiratory protection program15 that includes fire fighter fitness, training, competency, and skill in SCBA and emergency procedures. Firefighters should remember the first rule in any emergency situation, and that is not to panic. Panic causes increased breathing air consumption and inability to focus on emergency procedures. If fire fighters become lost, trapped, or disoriented they need to focus on managing remaining air in their SCBA cylinder until other fire fighters can make a rescue attempt. Removing one’s facepiece in an IDLH atmosphere can immediately expose the respiratory system to a potentially fatal environment, thus incapacitating an individual. Choosing to leave one’s SCBA facepiece on may be the best chance in providing additional time for a fire fighter to be rescued. Fire fighters should follow their department’s SOPs regarding emergency SCBA procedures and emergency communications.

Recommendation #7: Manufacturers, equipment designers, and researchers should conduct research into refining existing and developing new technologies to track the movement of fire fighters inside structures.

Discussion: Fire fighter fatalities often are the result of fire fighters becoming lost or disoriented on the fireground. The use of systems for locating lost or disoriented fire fighters could be instrumental in reducing the number of fire fighter deaths on the fireground. The National Institute of Standards and Technology (NIST) has been evaluating the feasibility of real-time fire fighter tracking and locator systems for some time.16, 17 Another group researching advanced fire fighter locator and tracking systems is the Maryland Fire Rescue Institute, located at the University of Maryland – College Park.18 Research into refining existing systems and developing new technologies for tracking the movement of fire fighters on the fireground should continue. While it is not clear that the use of this technology in this incident would have prevented the fatalities, such technology could potentially have reduced the search time by aiding rescue teams in pin-pointing the location of the missing fire fighters. This new technology must function properly in the severe fire conditions often encountered during rescue operations.

During the initial stages of the incident, it was not known who was transmitting the Mayday, where exactly they were in the basement, or how they got into the basement. Victim #2 went accounted for approximately 50 minutes before a determination was made that Victim #2 was also missing. It was not until rescue/recovery crews visually located the victims that they accounted for the location of Victim #2. This technology may have assisted the fire department during this incident in more quickly locating Victim #1 and Victim #2.

Of importance, Victim #1’s PASS device was alarming during the Mayday and when he was discovered, but it was reported to NIOSH investigators that Victim #2’s PASS device was never heard. Victim #2’s PASS device was evaluated as part of NIOSH’S NPPTL SCBA inspection. Victim #2’s PASS device failed to function when tested, but after the batteries were replaced within the PASS device, it alarmed appropriately. It has not been determined if the battery life was exhausted prior to Victim #2 going into the structure. It is important to note that the 2007 revision to NFPA 1982 Standard on Personal Alert Safety Systems (PASS) includes new heat and flame resistance requirements resulting from documented reports where PASS devices were not heard during fatal fireground incidents. 19 Laboratory testing conducted by NIST determined that exposure to high temperature environments caused the loudness of the tested PASS alarm signal to be reduced. This reduction in loudness can cause the alarm signal to become indistinguishable from background noise at an emergency scene. Initial laboratory testing by NIST highlighted that this sound reduction may begin to occur at temperatures as low as 300°F. Thus the use of PASS devices meeting NFPA 1982, 2007 Edition requirements is highly recommended.

Recommendation #8: Manufacturers, equipment designers, and researchers should continue to develop and refine durable, easy-to-use radio systems to enhance verbal and radio communication in conjunction with properly worn self-contained breathing apparatus (SCBA).

Discussion: The use of Personal Protective Equipment (PPE) and an SCBA make it difficult to communicate, with or without a radio.20-22 Faced with the difficult task of communicating while wearing a SCBA, fire fighters sometimes momentarily remove their facepieces to transmit a message directly or over a portable radio. Considering the toxic and oxygen-deficient hazards posed by a fire and the resulting products of combustion, removing the SCBA facepiece, even briefly, is a dangerous practice that should be prohibited. Even small exposures to carbon monoxide and other toxic agents present during a fire can affect judgment and decision-making abilities. To facilitate communication, equipment manufacturers have designed facepiece-integrated microphones, intercom systems, throat mikes, and bone conduction mikes worn in the ear or on the forehead.20-22

During this incident, interviewed fire fighters complained of radio transmissions being unintelligible at times or not heard at all. Although NIOSH investigators are not certain why Victim #1 and Victim #2 were found without their facepieces on, one theory is that Victim #1 may have momentarily removed his facepiece to better transmit his Mayday. Fire fighters recall hearing his transmissions as they came across the radio and also emanating clearly from the structure.

Recent testing by the National Institute for Standards and Technology (NIST) of portable radios in simulated fire fighting environments has identified that radios are vulnerable to exposures to elevated temperatures. Some degradation of radio performance was measured at elevated temperatures ranging from 100°C to 260°C, with the radios returning to normal function after cooling down. Additional research is needed in this area.16, 20 Fire service radios also need to be waterproof as normal fireground conditions dictate that radios are frequently exposed to excessive amounts of water during routine use through exposure to hose streams, overspray, water dripping from overhead, etc.

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FDNY- August 27, 2006 Walton and East Mount Eden Avenues, Bronx, NY

Floor Collapse at Commercial Structure Fire Claims the Lives of One Career Lieutenant and One Career Fire Fighter – New York (REPORT HERE)

SUMMARY
On August 27, 2006, a 43-year-old male career Lieutenant (victim #1) and a 25-year-old male fire fighter (victim #2) died after the floor they were operating on collapsed at a commercial structure fire. At approximately 1230 hours, crews were dispatched to a fire. The victims’ engine was dispatched at 1236 hours as an additional unit alarm and arrived on the scene at approximately 1240 hours. At approximately 1251 hours, victim #1, victim #2 and fire fighter #1 advanced a 2 ½-inch hand line through the front of the structure and down an aisle toward the rear of the store. The fire was located in the rear interior of the structure (discount store) that sold a variety of numerous small household commodity items. Approximately three minutes later, the structural members supporting the floor directly below the victims failed. The V-shaped collapse of the floor caused victim #1 and victim #2 to fall into the basement and shelving stocked with merchandise to fall in on top of them. Multiple MAYDAYs were transmitted and the fire fighter assist and search team (FAST) was deployed to the front of the structure where they assisted in the rescue of numerous members who had been operating in the interior of the structure at the time of the collapse. Battalion Chief #1, Lieutenant #1 and fire fighter #1 were freed from the debris. At approximately 1415 hours, victim #1 was removed from the debris in the basement and transported to the hospital. He died the next day as a result of his injuries. At approximately 1435 hours, victim #2 was removed from the basement and transported to the hospital where he was pronounced deceased as a result of his injuries.

F2006-27 Aug 27, 2006 Floor collapse at commercial structure fire claims the lives of one career lieutenant and one career fire fighter – New York PDF Adobe PDF file

NIOSH investigators concluded that, to minimize the risk of similar occurrences, fire departments should:

  • consider the possibility of a substandard structure when building information is not available from pre-incident plans
  • consider the live load of water on the structure and go defensive when water load potentially compromises the structural integrity

Additionally, municipalities should:

  • explore means of coordinating information sharing between building and fire departments to increase safety for fire fighters and civilians
  • consider conducting inspections on all commercial structures where a change of occupancy has occurred or renovations are known or suspected, giving special attention to non-sprinklered commercial retail structures

RECOMMENDATIONS/DISCUSSIONS

Recommendation #1: Fire departments should consider the possibility of a substandard structure when building information is not available from pre-incident plans, and implement a defensive strategy when no occupants are at risk.

Discussion: The threat of a collapse of some type (i.e. roof, ceiling, floor or wall) is a possibility in any structural fire due to the effects of fire, water application, age, insects, and alterations. It is a high probability that a fire department is unaware of structural defects caused by age, insects and alterations. To minimize the risk of injury or death to fire fighters during structural operations, the size-up and risk assessment includes many factors, which include: age of the building (deterioration of structural members, evidence of weathering, use of lightweight materials in new construction), occupancy, and renovations or modifications to the building.3,4,5

Pre-incident plans are an effective tool in preventing injuries and deaths of fire fighters due to structural collapse.  They allow fire departments to determine factors, such as, age of the structure, structural integrity, type of materials used in the structure, and amount of load on the roof that could weaken the supports, etc.  However, in numerous cities and towns where buildings number in the hundreds of thousands, fire departments lack the manpower to pre-plan all buildings under their protection. Often fire departments are limited to targeting buildings that have a unique construction or pose a known hazard.

In floor collapses that have occurred, such as those at a New York City drug store (October 17, 1966) and at a Boston hotel (June 17, 1972), there were no warning signs, and no time to act and withdraw fire fighters to safety. At both of these floor collapses, unauthorized alterations on the structure contributed to the structural failure.5

“The potential for structural collapse is one of the most difficult factors to predict during initial size-up and ongoing fire fighting. Structural collapse usually occurs without warning.” 3 When pre-incident plan information on the fire structure is not available, occupants have been evacuated, and evidence of structural deterioration and/or modification cannot be determined, a defensive strategy should be implemented. A defensive strategy would help ensure fire fighter safety and is warranted in structures that lack pre-incident plans, no occupants are at risk, and where the potential for numerous unrecognized hazards exists, such as substandard construction and building deterioration.

Fire departments operating in older businesses and homes should be suspicious of potential alterations and renovations which could result in unsupported loads and unusual voids. These alterations may be hidden by sheetrock (drywall) or flooring and built up flooring which is difficult to detect during inspections and virtually impossible to detect during firefighting operations. The older the structure, the greater the possibility of renovation or remodel.

In this case, there were no current pre-incident plans for the structure; the occupants had evacuated upon the fire department’s arrival, and compromised structural integrity was not immediately evident. Structural alterations had been made to the girders, columns, and floor in order to presumably level and support the floor. A post incident inspection showed 2 x 4 boards being used inappropriately (in orientation and stability) as a floor joist. A cluster of nails were used in lieu of bolts to attach gusset plates to the columns and girders. Sheets of plywood were added to the floor with no structural support around the sheet’s edges nor at 12”, 16” or even 24” intervals in accordance with standard building codes. Subflooring (i.e., plywood, wafer board, etc.) needs to be fastened around the sheet’s edges and at interval spacing (generally every 16 inches, but spacing may vary according to load requirements) to support floor joists. The interior support members of the structure suffered from severe rot at the base of the timber columns.

Recommendation #2 : Fire departments should consider the live load of water on the structure and go defensive when water load potentially compromises the structural integrity.

Discussion: A forensic engineering analysis of the fire building demonstrated that the weight of water added to the building from the fire fighting operations was approximately 50% of the rated structural capacity of the floor.2 As noted previously, however, timbers that supported the ground floor had rotted. Thus, the actual structural capacity of the floor was less than rated. Although the ultimate cause of the collapse was the rotted timbers, the weight of the water applied during the fire fighting operations, in addition to the weight of fire fighters, store merchandise, etc., likely contributed to the collapse. Given the many unknowns during fire fighting operations, including in most incidents the rated capacity of floors, incident commanders need to continuously consider the impact of water weight on structural integrity, and shift to defensive strategies when structural integrity is potentially compromised.

Firefighting operations can drastically increase the live load on the fire building. This can be due to the weight of:

  1. the firefighters with their protective equipment and tools,
  2. the hose-line brought into the fire building, and
  3. the water used to attack the fire6.

A 2 ½ -inch hose-line can deliver approximately 250 gallons of water per minute. 5 This adds about 2,082 pounds per minute into the fire building. If multiple hose-lines are operating, the weight of the water can be tremendous.

When operating in an offensive mode, a buildup of water within a building requires that immediate action be taken to alleviate these conditions. 6 The remedy may be as simple as controlling the excess flow from the hose-line or moving fire debris that is restricting runoff. When using large amounts of water, it is always advisable to provide for drainage when necessary. This can be accomplished any number of ways from chutes with traps to actual holes drilled to provide relief. 6

It must be recognized that at the same time that this additional weight is being introduced into the fire building, the fire and water are weakening the structure. Under these conditions, a defensive strategy is best when no civilians are in the structure. 5

In this case, civilians had evacuated the fire building upon the fire department’s arrival. The structures’ configuration only enabled an initial attack through the front of the structure and down narrow aisle ways to the rear of the structure where the origin of the fire was located. Prior to the collapse, three 2 ½-inch hose-lines (operating 17 minutes, 8 minutes, and 2 minutes, respectively) were flowing water through and into the rear of the structure. The added weight and flow of the water could have contributed to the floor collapse because of the rotted support columns decreasing the timber frame system’s ability to equalize the water load across the floor.

location of victims
Diagram 2. Shows location of victims on the structure’s floor above the girder that failed. From the NIOSH REPORT

 

Additionally,

Recommendation #3 : Municipalities should explore means of coordinating information sharing between building and fire departments to increase safety for fire fighters and civilians

Discussion: Information on building construction, renovations, and alterations can help Incident Commanders develop strategies and tactics that effectively fight fires while attending to fire fighter safety. Pre-incident plans are a useful tool for ensuring that fire departments and Incident Commanders have information on building construction and contents to guide decision-making on the fireground. In urban areas with large numbers of existing structures, it may not be feasible to develop pre-incident plans for all or most structures, and for fire departments to regularly revisit structures to update pre-incident plans. Municipal building departments that issue building permits and conduct code inspections may collect, or be in position to collect, information that may be useful to fire departments. Municipalities should consider exploring mechanisms by which building information relevant to fire fighter and civilian safety can be collected and shared between building and fire departments. As one example, building departments could notify fire departments when building permits are issued. This would result in fire departments being aware of these building alterations, and to possibly target these buildings for a pre-incident plan. Priority should be given to sharing such information for targeted hazards identified by fire departments.

Recommendation #4: Municipalities should consider conducting inspections on all commercial structures where a change of occupancy has occurred or renovations are known or suspected, giving special attention to non-sprinklered commercial retail structures

Discussion: Occupancy changes understandably occur with great frequency. However, every effort should be made as new permits are issued to aggressively inspect any occupancy change. It is critical that municipalities assess that any renovations or remodeling meets current codes, and that original and renovated supports are capable of supporting the new occupancies. These building inspections should specifically consider the loading or redistribution of stock to ensure that flooring can handle dead and live loads.

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NIOSH Report addresses Operational Issues at Metal Recycling Facility Fire

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 NIOSH Report Issue: Seven Career Fire Fighters Injured at a Metal Recycling Facility Fire – California

NIOSH Exective Summary

On July 13, 2010, seven career fire fighters were injured while fighting a fire at a large commercial structure containing recyclable combustible metals. At 2345 hours, 3 engines, 2 trucks, 2 rescue ambulances, an emergency medical service (EMS) officer and a battalion chief responded to a large commercial structure with heavy fire showing. Within minutes, a division chief, 2 battalion chiefs, 3 engines, 3 trucks, 4 rescue ambulances, 2 EMS officers and an urban search and rescue team were also dispatched.

An offensive fire attack was initially implemented but because of rapidly deteriorating conditions, operations switched to a defensive attack after about 12 minutes on scene. Ladder pipe operations were established on the 3 street accessible sides of the structure. Approximately 40 minutes into the incident, a large explosion propelled burning shrapnel into the air, causing small fires north and south of structure, injuring 7 fire fighters, and damaging apparatus and equipment. Realizing that combustible metals may be present, the incident commander ordered fire fighters to fight the fire with unmanned ladder pipes while directing the water away from burning metals. Approximately 2 ½ hours later, two small concentrated areas remained burning and a second explosion occurred when water contacted the burning combustible metals. This time no fire fighters were injured.

Contributing Factors

  • Unrecognized presence of combustible metals
  • Unknown building contents
  • Unrecognized presence of combustible metals
  • Use of traditional fire suppression tactics
  • Darkness

Key Recommendations

  • Ensure that pre-incident plans are updated and available to responding fire crews
  • Ensure that fire fighters are rigorously trained in combustible metal fire recognition and tactics
  • Ensure that policies are updated for the proper handling of fires involving combustible metals
  • Ensure that first arriving personnel and fire officers look for occupancy hazard placards on commercial structures during size-up
  • Ensure that all fire fighters communicate fireground observations to incident command
  • Ensure that fire fighters wear all personal protective equipment when operating in an immediately dangerous to life and health environment
  • Ensure that an Incident Safety Officer is dispatched on the first alarm of commercial structure fires
  • Ensure that collapse/hazards zones are established on the fireground. 

The fire department had a comprehensive list of SOGs and policies. However, the policy for the extinguishment of combustible metal fires was out dated. This policy called for copious amounts of water to be put on the combustible metal fire. The SOG for pre-incident planning was followed at this incident. However, due to the constantly changing business environment, the company had submitted a business plan that identified hazards to the city but this information did not get updated in the computer-aided dispatching (CAD) database for the fire department or dispatch.

A month prior to this incident on June 11, 2010, at 11:00 a.m., the same business owner’s metal processing facility located diagonally across the street from this incident, had several small explosions and fire. This incident required 36 fire department companies, 16 rescue ambulances, 1 USAR team, 2 hazardous material teams, 7 BCs, 1 DC, and a DDC, totaling 248 fire department personnel, in addition to mutual aid. Approximately 2 ½ hours of fire suppression operations with water brought the fire under control, which encompassed a 150′ x 100′ area of combustible metal shavings.

The company had metal –X (a brand of combustible metal fire extinguishing agent) available, but not enough of it to be effective. No fire fighters were injured. However, a civilian worker was critically injured and a police officer received minor injuries.

NIOSH REPORT 2010-30 Direct Link HERE

Fom the LAFD Press Release on July 15, 2010

On Tuesday, July 13th, 2010 at 11:43 PM, 41 Companies of Los Angeles Firefighters, 21 LAFD Rescue Ambulances, 3 Arson Units, 1 Urban Search and Rescue Unit, 1 Rehab Unit, 1 Hazardous Materials Team, 3 EMS Battalion Captains, 8 Battalion Chief Officer Command Teams, 1 Division Chief Officer Command Team and 2 Bulldozers under the direction of Deputy Chief Mario Rueda responded to a Major Emergency Structure Fire at 761 East Slauson Avenue in South Los Angeles (CA).

More than 200 Los Angeles Firefighters were requested over the course of the incident to help battle a blaze at a large two-story commercial structure that encompassed six occupancies over an entire city block. Firefighters quickly arrived at United Alloys and Metals to find heavy fire at an industrial facility known for processing titanium and super alloy scrap.

The 73 year-old structures between Paloma Avenue and Mckinley Avenue, were quickly engulfed in flames and forced firefighters into a defensive attack early during this huge fire fight. Shortly after midnight the decision was made to pull all Firefighters out of the structure and attack the flames from the exterior.

Approximately 20 minutes following this decision a partial wall collapse, roof collapse, and a total of three explosions took place. These massive blasts rained down debris of concrete and titanium on Firefighters and even shattered windows of emergency vehicles.

From this point forward it became a heavy stream operation with ladder pipes and portable monitors that provided huge volumes of water against the intense flames. Despite the challenges of extinguishing burning titanium and the devastating explosions, the blaze was controlled in just five hours. Exhausted Firefighters were relieved the next morning by their colleagues who continued the extended overhaul and detailed salvage procedure. Link HERE

LAFD News and Information Web Site; HERE

The at the time of the fire  LAFD stated damage was estimated at $5,000,000 ($4,000,000 structure & $1,000,000 contents). 

 The LAFD battled a similar blaze at 900 East Slauson Avenue on Friday, June 11th in 2010.

Fire Scene Photo from LAFD News HERE

LAFD Photo

The Structure

The incident involved a 45,000 square foot multiple business commercial structure that measured approximately 300′ x 150′ and was built in 1939. The commercial structure was divided into 3 sections with both Type III and Type V (metal clad) construction. The A-side (west) of the structure measured 60′ x 100′ under a heavy timber bowstring truss roof and exterior block walls covered with a stucco finish. This section of the structure contained denim fabric altering machinery.

The larger 210′ x 150′ open warehouse middle section of the structure was under a metal sawtooth roof (a roof composed of a series of small parallel roofs of triangular cross section, usually asymmetrical with the vertical slope glazed or windowed to allow for light) with concrete reinforced metal beam exterior walls covered with an exterior stucco finish. This section of the structure contained bins, bales, and piles of recyclable metals. The C-side of the structure was an office area that measured approximately 30′ x 150′. It was comprised of two stories with a conventional flat roof, wood framed interior walls, and concrete reinforced metal beam exterior walls covered with an exterior stucco finish.

 

 

Occupancy hazard placards existed at the A and C/D corner of the structure. The placards had a 3 health rating (a serious hazard) in the blue quadrant, a 4 flammability rating (flammable gases, violate liquids, pyrophoric materials) in the red quadrant, a 2 instability rating (a violent chemical change possible at elevated temperatures and pressure) in the yellow quadrant, and an OX (material is an oxidizer) in the white quadrant.

The commercial structure had been recently acquired, within the past year or two, by a local metal recycling company. The company had submitted the annual business plan to the city, which identified potential hazards, but this information had not been updated in the computer-aided dispatch (CAD) database for the dispatch center or fire department. The construction features of the occupancy such as the bowstring trusses, presence of combustible metals, and access restrictions would have been critical information to the fire department for fighting a fire at this location. The fire department had pre-planned the structure prior to the metal recycling company acquiring the commercial structure.

Approximate Placement of Key Fireground Apparatus, Hoselines and Explosion Areas Relative to Commercial Fire Structure.

 

BC11 left the command post and was walking towards T10 and T66 when an upper section of wall on the D-side near the C/D corner collapsed followed by a larger upper midsection of wall on the D-side. BC11 recalled seeing white hot metal and was about to instruct the trucks to direct water away from the white burning metals. Seconds later, approximately 40 minutes into the incident, at 0026 hours, a large explosion propelled burning shrapnel into the air and caused small fires north and south of the structure. T33 and E66′s hoseline crews were blown backwards by the blast. T10 and mutual aid E9 were hit with flaming debris which broke through E9′s driver-side door window and ignited the seat.

T10 received several large dents and wooden ground ladders were ignited. Approximately 10 feet away, T10′s hoseline crew was blown approximately 20′ back and off the 2 ½” hoseline by the explosion. T10′s captain was backing up the nozzleman and was hit with burning debris causing serious burns on his hand and ear. T66′s captain jumped on the hoseline to stop it from whipping around. T10′s fire fighter operating the ladderpipe had seen 2 white flashes and greenish plumes just prior to explosion. When the explosion occurred he turned his head to the left causing pain and ringing in his right ear as white hot debris went all around him. Multiple hose beds and hoses on the ground were burned through. The explosion was reported to have been broadcast up and out in all directions .

The IC called for a personnel accountability report (PAR) which accounted for all personnel and indentified 2 injured fire fighters and a captain. Note: The other 4 fire fighters injuries were not made apparent until after the incident. Minutes later, the Division C chief (BC13) reported to the IC that he identified a National Fire Protection Association 704 placard above the entrance door on the C/D corner of the structure.

BC13 relayed to command the placard classifications of Health – 3, Flammability – 4, Reactivity – 2, and Special Hazards – OXIDIZER. The command team discussed the current fire department policy of using copious amounts of water on combustible metals and decided to alter the tactical plan based on information learned through the 704 placard and the fire conditions. The IC called for aerial ladderpipe personnel to move from the tip of the aerial to the aerial turntable. Note: When the decision is made to go defensive, ladderpipe personnel should be removed from the tip of the aerial to minimize any risk associated with being at an elevated height, such as explosions or falling. On Division C, two monitors and a 2 ½” hoseline were directed on the office area of the structure.

NIOSH Report Photo Image

 

Recommendations

Recommendation #1: Fire departments should ensure that pre-incident plans are updated and available to responding fire crews.

Discussion: NFPA 1620 Standard for Pre-Incident Planning, states “The purpose of this document shall be to develop pre-incident plans to assist responding personnel in effectively managing emergencies for the protection of occupants, responding personnel, property, and the environment.” A pre-incident plan identifies deviations from normal operations and can be complex and formal, or simply a notation about a particular problem such as the presence of flammable liquids, explosive hazards, modifications to structural building components, or structural damage from a previous fire.

Building characteristics including type (or more importantly risk) of construction, materials used, occupancy, fuel load, roof and floor design, and unusual or distinguishing characteristics should be recorded, shared with other departments who provide mutual aid, and if possible, entered into the dispatcher’s computer so that the information is readily available if an incident is reported at the noted address.

Since many fire departments have thousands to hundreds of thousands of structures within their jurisdiction, it is a challenge to establish an effective preplanning system that addresses all structures and hazards. Priority should be given to those locations having elevated or unusual fire hazards and life safety considerations.

Written SOGs enable individual fire department members an opportunity to read and maintain a level of assumed understanding of operational procedures. Conversely, fire departments can suffer when there is an absence of well developed SOGs. The NIOSH Alert: “Preventing Injuries and Deaths of Fire Fighters” identifies the need to establish and follow fire fighting policies and procedures. Guidelines and procedures should be developed, fully implemented and enforced to be effective. Periodic refresher training should also be provided to ensure fire fighters know and understand departmental guidelines and procedures.

One tool for fire departments to use in assessing their risks for structures within their jurisdictions is the mnemonic, BECOME SAFE:

  • Building
  • Evaluation
  • Construction/occupancy
  • Operational hazards
  • Manage time and elements
  • Engagement
  • Situational awareness
  • Assessment and risk analysis
  • Fire behavior and effects
  • Evaluate and execute 7

A pre-planning process should integrate the BECOME SAFE concepts and include updated information from the annually submitted business plans and any other pertinent fire safety information needs to be developed by involving fire department personnel, dispatch center personnel, and building and fire code officials. NFPA 1, Fire Code, Annex Q, Fire Fighter Safety Building Marking System, makes direct reference to potential resolution towards identifying structures and contents.

It contains a standard symbol that integrates information about building construction features, content hazards, life safety systems and NFPA 704 placards into one placard. High hazard and life safety considerations for the storage, handling, and manufacturing of chemicals should be indicators to prioritize processing of the information and expediting it to the CAD system.

Current and correct information is needed to adequately address risk management issues and to comply with NFPA 1500, Standard on Fire Department Occupational Safety and Health Program, Annex A, Section 8, that addresses guidelines for the IC to consider when evaluating risk versus gain.

In this incident, the construction features of the occupancy, such as the bowstring trusses, presence of combustible metals, and access restrictions, would have been critical information to the fire department for fighting a fire at this location. A more complete pre-planning process and/or business plan updating process, involving fire department personnel, dispatch center personnel, and building code officials could have noted this information which may have aided the IC in developing a safer and more effective offensive or defensive strategy. In order to facilitate open communication, fire department personnel, dispatch center personnel, and building and fire code officials should develop a process to effectively update building information and to share this information in a timely manner. The relay of this information could be used to facilitate dynamic risk management and enhanced command and control. (Note: The fire department did a business survey following this incident and found 68 business sites that had combustible metals.)

Recommendation #2: Fire departments should ensure that fire fighters are rigorously trained in combustible metal fire recognition and tactics.

Discussion: Fire departments often respond to complex or unique hazards which require specialized/advanced knowledge and/or training in dealing with that hazard. Combustible metal fires present unique and dangerous hazards to fire fighters which are not commonly encountered in conventional structure fire fighting operations. The temperatures encountered in a combustible metal fire far exceed those of a structure fire.A block wall near the first explosion had an appearance of brown and black glass, suggesting that temperatures exceeded 3000 degrees F

The National Fire Protection Association (NFPA) 484, Standard for Combustible Metals, states that it is extremely important to conduct a good size-up by identifying the combustible metals involved, the physical state of the metals (e.g., shavings, chips, fine dust, etc.), the location relative to other combustible materials, and the quantity of the product involved. NFPA 484, A.13.3.3.10.3, states that the application of a wet extinguishing agent (particularly water hose streams) accelerates a combustible metal fire and could result in an explosion.

This is due to the water reacting with the combustible metal and giving off highly flammable hydrogen gas and oxygen. This conversion of water into hydrogen has a heat value (British Thermal Units per pound (Btu/lb)) of about 2.8 times that of gasoline, assuming 100 percent conversion of the hydrogen in the water. This equates to flowing 42.8 gallons per minute (gpm) of gasoline on the fire for every 100 gpm of water. NFPA 484, A.13.3.3.5, states that the following agents shall not be used as extinguishing agents on a combustible metal fire because of adverse reactions or ineffectiveness: water, foams, halon, carbon dioxide, nitrogen (except on iron, steel, and alkali metals, excluding lithium), and halon replacement agents.

Thus, in lieu of using a wet extinguishing agent, primarily water, it is recommended that a bulk dry extinguishing agent compatible with the product involved, such as dry sand, dry soda ash, or dry sodium chloride, be used. In most cases for large fires beyond the incipient stage, the application of a dry agent is not feasible. In these cases the best approach is to isolate the material as much as possible, protect exposures, and allow the fire to burn out naturally. Thorough training is a must to properly identify and handle these unique fires. Businesses that manufacture, use or store combustible metals, and fire departments with combustible metals in their jurisdiction, should review Chapter 13 of the National Fire Protection Association (NFPA) 484: Standard on Combustible Metals.12

Combustible metal fire training should only occur in the classroom since combustible metals are not a practical substance to use for live exercises. The excessive temperatures and the unstable nature of combustible metals when burning would put fire fighters in an unnecessary and dangerous situation, if used in live exercises.

In this incident, several fire fighters noticed the unusually bright white hot fire, white sparks, bluish green hues of the fire, and white smoke but did not recognize that this could be indicative of burning combustible metals. The fire department did not suspect that combustible metals were present until after the first explosion and the discovery of the placard indicating oxidizers were in the structure. Once identified, command directed water away from areas of suspected burning combustible metals. Later in the incident, a few concentrated areas remained burning, and copious amounts of water were directed on these areas to extinguish them. This caused a second explosion, in which no one was hurt. The titanium that was involved in the second explosion had developed a protective crust during the fire which was over 2 feet thick and contributed to the shaped charge effect when the molten metal under the protective crust came in contact with the water being applied by the ladderpipes and exploded. The development of the protective crust is a normal occurrence in combustible metal fires which actually limits open burning of the combustible metal and will result in control and extinguishment of the fire, if no actions are taken which disturb the protective crust.

In June, an incident had occurred diagonally across the street at different structure, owned by the same company, where the fire department had a combustible metal fire and was informed by employees not to use water. The fire department updated their training bulletin addressing tactics for combustible metals and removed the use of copious amounts of water.

Recommendation #3: Fire departments should ensure that policies are updated for the proper handling of fires involving combustible metals.

Discussion: The fire department had an outdated policy on the handling of combustible metal fires which primarily called for copious amounts of water to be put on a metal fire. The policy had been based on a training scenario in which burning magnesium Volkswagen engine blocks, when hit with water, would spark, but the water cooled the large mass of magnesium enough to put the fire out. Numerous fire departments across the country remember this training scenario and have not kept up with the increasing and varied uses of combustible metals in everyday products. Manufacturing and recycling facilities for these combustible metal products have been on the rise. This poses a new and different hazard for fire fighters. Combustible metals in smaller pieces and particle sizes burn at much higher temperatures, 5000 degrees F for magnesium to 8500 degrees F for zirconium, and present an explosion hazard when water comes into contact with these burning metals. When applied to burning combustible metals, water and carbon dioxide will disassociate into their base chemical elements. For example, water disassociates into hydrogen and oxygen. The added fuel and oxygen increases burning and causes extreme reactions, such as explosions. An example standard operating procedure (SOP) for the proper handling of combustible metal fires that reflects modern day hazards is provided in

Recommendation #4: Fire departments should ensure that first arriving personnel and fire officers look for occupancy hazard placards on commercial structures during size-up.

Discussion: NFPA 704, Identification of the Hazards of Materials for Emergency Response, states that all buildings or areas storing, using, or handling hazardous materials should be marked by use of a standardized placard system. The placard system identifies hazard categories for health, flammability, reactivity and special hazards, including water reactivity and oxidizers.

When conducting a size-up at commercial structures, fire officers should look for such placards. Placard locations should be located at or near entrances and unobstructed by landscaping, fencing, etc.

In this incident, placards existed at the A and C/D corner of the structure. However, they were not identified until after the explosion. The late night hour, poor lighting, angled corners of structure, and fire attack from doorways other than the front entrance may have contributed to first arriving personnel and fire officers not seeing and acting upon the information on the placard.

Recommendation #5: Fire departments should ensure that all fire fighters communicate fireground observations to incident command.

Discussion: National Fire Protection Association (NFPA) 1561, Standard on Emergency Services Incident Management System, Section 6.3 Emergency Traffic states: To enable responders to be notified of an emergency condition or situation when they are assigned to an area designated as immediately dangerous to life or health (IDLH), at least one responder on each crew or company shall be equipped with a portable radio and each responder on the crew or company shall be equipped with either a portable radio or another means of electronic communication.The U.S. Fire Administration report, Voice Radio Communications Guide for the Fire Service, provides an overview of radio communication issues involving the fire service. Effective fireground radio communication is an important tool to ensure fireground command and control as well as helping to enhance fire fighter safety and health. It is every fire fighter and company officer’s responsibility to ensure radios are properly used. Ensuring appropriate radio use involves both taking personal responsibility (to have your radio, having it on, and on the correct channel) and a crew-based responsibility to ensure that the other members of your crew (subordinates, peers, and supervisor) are doing so as well.

Receiving interior/exterior status updates is critical to the safety of fire fighters on the incident, rescue/recovery efforts, and overall control of the incident. The decision to commit interior fire fighting personnel or establishing a collapse/hazard zone for exterior fire fighting personnel should be made on a case-by-case basis with proper risk-benefit decisions being made by the incident commander.

The fireground is very dynamic, and conditions can either improve or deteriorate based on fire suppression activities, and available resources, and most importantly assessments/size-ups of the incident are necessary to detect a change on the fireground.

In this incident, several fire fighters noticed the unusually bright white hot fire, white sparks, bluish green hues of the fire, and white smoke (all potential signs of combustible metal involvement), but did not communicate it to command.

Recommendation #6: Fire departments should ensure that fire fighters wear all personal protective equipment when operating in an immediately dangerous to life and health environment.

Discussion: NFPA 1500 Standard on Fire Department Occupational Safety and Health Program states, “the fire department shall provide each member with protective clothing and protective equipment that is designed to provide protection from the hazards to which the member is likely to be exposed and is suitable for the tasks that the member is expected to perform…protective clothing and protective equipment shall be used whenever a member is exposed or potentially exposed to the hazards for which the protective clothing (and equipment) is provided.”

NFPA 1971 Standard on Protective Ensembles for Structural Fire Fighting and Proximity Fire Fighting has established minimum requirements for structural fire fighting protective ensembles and ensemble elements designed to provide fire fighting personnel limited protection from thermal, physical, environmental, and bloodborne pathogen hazards encountered during structural fire fighting operations.

These requirements will assist in protecting firefighters, but only if they wear the PPE as recommended by the manufacturer. The potential for injury at all incidents exists when fire fighters do not wear the full PPE ensemble, including gloves.

In this incident, numerous fire fighters did not don their facepiece and/or wear hoods or gloves. The potential for unknown toxic gases and flying debris as evidenced by the 2 explosions makes wearing full PPE critical for protecting fire fighters from immediate and chronic hazards. If gloves and hoods had been worn, the hand and ear burn injuries would have been less severe or perhaps totally eliminated.

Recommendation #7: Fire departments should ensure that an Incident Safety Officer is dispatched on first alarm of commercial structure fires.

Discussion: According to NFPA 1561 Standard on Emergency Services Incident Management System, “The incident commander shall have overall authority for management of the incident and the incident commander shall ensure that adequate safety measures are in place.” This shall include overall responsibility for the safety and health of all personnel and for other persons operating within the incident management system. While the incident commander is in overall command at the scene, certain functions must be delegated to ensure adequate scene management is accomplished.According to NFPA 1500 Standard on Fire Department Occupational Safety and Health Program, “as incidents escalate in size and complexity, the incident commander shall divide the incident into tactical-level management units and assign an incident safety officer (ISO) to assess the incident scene for hazards or potential hazards.” These standards indicate that the incident commander is in overall command at the scene, but acknowledge that oversight of all operations is difficult. On-scene fire fighter health and safety is best preserved by delegating the function of safety and health oversight to the ISO. Additionally, the incident commander relies upon fire fighters and the ISO to relay feedback on fireground conditions in order to make timely, informed decisions regarding risk versus gain and offensive-versus-defensive operations. The safety of all personnel on the fireground is directly impacted by clear, concise, and timely communications among mutual aid fire departments, sector command, the ISO, and the incident commander. NFPA 1521 Standard for Fire Department Safety Officer defines the role of the ISO at an incident scene and identifies duties such as recon of the fireground and reporting pertinent information back to the incident commander; ensuring the department’s accountability system is in place and operational; monitoring radio transmissions and identifying barriers to effective communications; and ensuring established safety zones, collapse zones, hot zones, and other designated hazard areas are communicated to all members on scene.

Larger fire departments may assign one or more full-time staff officers as incident safety officers who respond to working fires. In smaller departments, every officer should be prepared to function as the ISO when assigned by the incident commander. The presence of an incident safety officer does not diminish the responsibility of individual fire fighters and fire officers for their own safety and the safety of others. The ISO adds a higher level of attention and expertise to help the fire fighters and fire officers. The ISO must have particular expertise in analyzing safety hazards and must know the particular uses and limitations of protective equipment.

In this incident, for the size of the fire department and responsible coverage area, there is an insufficient number of incident safety officers (ISO) and/or qualified personnel (certified to NFPA 1521) to act as an ISO. The ISO should be of a rank worthy of the significant responsibility.

Recommendation #8: Fire departments should ensure that collapse/hazard zones are established on the fireground.

Discussion: During fire operations, two rules exist about structural collapse: (1) the potential for structural failure always exists during and after a fire, and (2) a collapse danger zone must be established.

A collapse zone is an area around and away from a structure in which debris might land if a structure fails. The collapse zone area should be at least 1½ times the height of the building—the height of the building plus an additional allowance for debris scatter. For example, if the wall was 20 feet high, the collapse zone would be established at least 30 feet away from the wall. In this incident, the structure was approximately 18 feet high at the top of the parapet wall, and the collapse zone extended at least 27 feet from the structure.

Fire fighters must recognize the dangers and take immediate safety precautions if factors indicate the potential for a building collapse. An external load—such as a parapet wall, steeple, overhanging porch, awning, sign, or large electrical service connections—reacting on a wall weakened by fire conditions may cause the wall to collapse. Other factors include fuel loads, building damage, renovation work, pre-existing deterioration as well as deterioration caused by the fire, support systems, and truss construction.

Whenever these contributing factors are identified, all persons operating inside the structure must be evacuated immediately and a collapse zone should be established around the perimeter. Once a collapse zone has been established, the area should be clearly marked and monitored to make certain that no fire fighters enter the danger zone. Positioning companies at the corners of the building is usually safer than a frontal attack. In this incident, a collapse zone should have been established given the age of the structure and deteriorating fire conditions.

Recommendation #9: Vendors/Training Organizations should develop and offer a training program on combustible metal fires.

Discussion: There are a limited amount of training materials/programs that exist on combustible metal fires. There have been a small number of presentations and workshops conducted at fire conferences over the years but nothing offered by outside training organizations that pertains to what the fire service needs to know. Programs should be developed to highlight the characteristics of a combustible metal fire, tactics, and strategies for handling them.

Gypsum Board Ceiling Systems, Ceiling Collapse and Firefighter Safety

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In this week's issue of the National Fire Fighter's Near-Miss Reporting System's Report of the Week (ROTW) an informative focus was provided on near-miss reports related to ceiling collapse. We're posting the ROTW alert in it's entirety below and are expanding upon this discussion to include materials previously posted on Buildingsonfire.com from the posts that surrounded the LAFD LODD of Firefighter Glenn L. Allen  who was killed in the line of duty as a result of being trapped beneath rubble when the roof and ceiling collapsed during a blaze at a 12,000-square-foot  mansion in the Hollywood Hills on Feb. 17, 2011. (HERE and HERE)

Included in that reporting was expanded information on gypsum wall board ceiling systems. If you don't know about the National Fire Fighter's Near-Miss Reporting System and the Report of the Week (ROTW) follow these links HERE , HERE and HERE. More importantly, get involved and post some of your current OR past near-miss experiences and close calls, so the fire service can learn and everyone can go home. www.firefighternearmiss.com. Check out the extensive resources and materials avaiable on the site to support your training and operational needs.

Near-Miss Report of the Week

From the NMRS & ROTW;

The collapse of a ceiling is one of the more disorienting situations a firefighter can face. Sixty near-miss reports are returned when the keyword "ceiling collapse" is typed into the text box on www.firefighternearmiss.com. Each of these accounts provides lessons on the value of heightened situational awareness, correct use of PPE, rigorous training, and recognizing the effect of fire on building materials. The National Fire Fighter's Near-Miss Reporting System'ss Report of the Week (ROTW) featured report this week, 11-025, recounts one example.

"Our station was dispatched for a residential structure fire and we responded with two engines and four on-duty personnel… The near-miss happened about 30 minutes into the fire and there were two hoselines in place. One hoseline was on the second floor and one hoseline was on the first floor. Most of the fire was extinguished and overhaul was in progress. There were three members of my crew pulling ceiling to reach hot spots. The lieutenant stated to be careful because the floor above was moving when pulling down on overhead material. The firefighter and the lieutenant continued to pull down the ceiling. This is when the second floor collapsed down into the first floor and the room that we were in…"  

The overhead world of a fire scene is fraught with hazards. Many of the hazards we can dispassionately discuss at the kitchen table, but seem to overlook when we are engaged in firefighting. Electrical wiring, telecommunication cables, structural support systems and storage are all elements hidden behind the drywall. Whether you are looking up at a ceiling that covers an attic or an upper floor, shoving your hook through the drywall is usually a benign act that simply pulls down a section of sheetrock to expose the hidden area above. However, it can also be a catastrophic act that brings down an entrapment hazard that has you fighting for survival.

Once you have read the entire account of 11-025, and the related reports, consider the following: 

  1. Before ceiling pulling begins, is there an assessment of the structural stability and review of what might be behind the drywall before the first piece is removed?
  2. Do you and your crews observe best practices when pulling ceilings (i.e., starting at the doorway and working into the room, noting the location of structural members through visual notation of nails, "shadowing" or "ghosting" of studs, etc.) before pulling ceilings?
  3. Do you consider limiting the number of personnel in a room when ceilings and walls are being pulled?
  4. Who is responsible for ensuring utilities have been controlled before pulling ceilings and walls? How is utility control documented and confirmed before ceiling pulling begins?
  5. What is the likelihood that the space above the ceiling you are pulling is being used for storage? If storage is noted, can you determine what effect pulling down the ceiling will have on the structural members resisting the weight of the storage?

Overhaul activities occur during a transitional time in the firefighting process. The adrenaline and effort of the fire attack begins to fade, but there is still enough pent up energy that some members of the crews are propelled from one action to another without an assessment of conditions. The thinking officer and crew make periodic assessments, or benchmarks, to ensure the incident reality still matches the company's perception.

Related Reports- Topical Relation: Ceiling Collapse
05-553
06-292
07-889
08-305
09-465
10-847

Have you escaped a ceiling collapse due to exceptional vigilance? Have you ever gotten caught in a ceiling collapse? Submit your report to www.firefighternearmiss.com today so everyone goes home tomorrow.

Note: The questions posed above from the NFFNMRS-ROTW by the reviewers are designed to generate discussion and thought in the name of promoting firefighter safety. They are not intended to pass judgment on the actions and performance of individuals in the reports.

 

The Following is reposted from Buildingsonfire.com ( The LAFD LODD link is HERE)

 

Gypsum Board Ceiling Systems and Firefigher Safety

 

The recent events in Los Angeles and the line of duty death of veteran LAFD Firefighter Glenn Allen who died Friday from injuries he sustained when a ceiling collapsed on him in a house fire late Wednesday night in the Hollywood Hills again gives us pause to reflect on the demands and hazards present at all fire suppression operations in buildings on fire. The past two months have borne consist reports of floor, roof, wall and ceiling collapses leading to firefighter injuries and line of duty deaths.

  • Incident event coverage from this past week HERE, HERE and HERE

The importance of maintaining heightened situational awareness, identifying and monitoring suspected or inherent building construction hazards coupled with inherent occupancy risk factors, and aligning those with strategic objectives, incident actions plans and tactical deployment operations. Building Knowledge equating to firefighter safety is still a driving principle that is formulative to all firefighting operations in buildings, occupancies and structures. Let’s take this opportunity to gain some insights into the material that compromises nearly all wall and ceiling membrane systems and assemblies in nearly all buildings, occupancies and structures; that is gypsum board components.

I’ve included a number of video clips that center on our discussion, as the videos center on the operation parameters at this extremely large (floor area/square footage) residential occupancy. Most clips have good coverage of the structure and firefighting efforts. Take a few moments to review these clips before you proceed;




Gypsum board is the generic name for a family of panel-type products consisting of a noncombustible core, primarily of gypsum, with a paper surfacing on the face, back, and long edges.

In 1888, Augustine Sackett used plaster of Paris sandwiched between several layers of paper to produce what would eventually become "Sackett Board," the original gypsum board. By the 1950s, many innovations in gypsum board technology had been developed, including the listing of many fire-resistance rated designs, rounded edges, specialized nails, curved partitions, studless partitions, sound control systems, lightweight gypsum lath, plaster, and gypsum board systems that fueled a boom period for the use of gypsum products in both the residential and commercial construction industries.

By 1955, an estimated 50 percent of new homes were built using gypsum wallboard. Lightweight gypsum board systems permitted the use of lightweight steel in steel framed buildings, which enabled the widespread growth of high-rise residential and commercial construction during the 1960s and 1970s.

Today gypsum board, along with a variety of other gypsum panel products, continues to serve as a preferred building material in both residential and commercial construction for interior walls and ceilings, exterior sheathing, fire-resistant partitions and membranes, and liner material for elevator shafts and stairwells. These properties make gypsum board well suited for building and space types requiring cost-effectiveness as well as fire resistiveness and maintainability.

Gypsum board is often called drywall, wallboard, or plasterboard and differs from products such as plywood, hardboard, and fiberboard, because of its noncombustible core. It is designed to provide a monolithic surface when joints and fastener heads are covered with a joint treatment system.

Gypsum is a mineral found in sedimentary rock formations in a crystalline form known as calcium sulfate dehydrate. One hundred pounds of gypsum rock contains approximately 21 pounds (or 10 quarts) of chemically combined water. Gypsum rock is mined or quarried and then crushed. The crushed rock is then ground into a fine powder and heated to about 350 degrees F, driving off three fourths of the chemically combined water in a process called calcining. The calcined gypsum (or hemihydrate) is then used as the base for gypsum plaster, gypsum board and other gypsum products.

To produce gypsum board, the calcined gypsum is mixed with water and additives to form a slurry which is fed between continuous layers of paper on a board machine. As the board moves down a conveyer line, the calcium sulfate recrystallizes or rehydrates, reverting to its original rock state. The paper becomes chemically and mechanically bonded to the core. The board is then cut to length and conveyed through dryers to remove any free moisture.

Gypsum manufacturers also rely increasingly on “synthetic” gypsum as an effective alternative to natural gypsum ore. Synthetic gypsum is a byproduct primarily from the desulfurization of the flue gases in fossil-fueled power plants. Gypsum board is an excellent fire resistive material. It is the most commonly used interior finish where fire resistance classifications are required. Its noncombustible core contains chemically combined water which, under high heat, is slowly released as steam, effectively retarding heat transfer. Even after complete calcination, when all the water has been released, it continues to act as a heat insulating barrier. In addition, tests conducted in accordance with ASTM E 84 show that gypsum board has a low flame spread index and smoke density index. When installed in combination with other materials it serves to effectively protect building elements from fire for prescribed time periods.

Developed through modern technology as a result of specific requirements, gypsum board is mainly used as the surface layer of interior walls and ceilings; as a base for ceramic, plastic, and metal tile; for exterior soffits; for elevator and other shaft enclosures; as area separation walls between occupancies; and to provide fire protection to structural elements. Most gypsum board is available with aluminum foil backing which provides an effective vapor retarder for exterior walls when applied with the foil surface against the framing.

Standard size gypsum boards are 4ft. wide and 8, 10, 12, or 14 ft. long. The width is compatible with the standard framing of studs or joists spaced 16 in. and 24 in. on center. Some thicknesses and types of gypsum board are also produced as a standard 54 in. width material. Other lengths and widths are available as special order materials.

  • Depending on thickness and type of gypsum board, the weight can vary from 2 – 4 lbs./ per square foot
  • A typical 4 ft. x 8 ft. sheet of 5/8-in gypsum board can weigh 96 lbs.
  • A 4ft. x 12ft. sheet can weigh upwards of 150 lbs.
  • In large span designs with attachments varying from 16 inches on center to 24 inches on center with z-strips or resilient channels attached to the structural members; these ceiling panels and assemblies can fail and collapse in a monolithic manner creating a significant safety concern to operating companies below.
  • As an example a 12ft x 12ft. monolithic assembly collapse ( single layer-gypsum board only) could have a collapse weight of 500 lbs.
  • Add the weight of compromised and attached structural members components, fixtures and insulation and the absorption of added water into the gypsum board from hose streams the combined weight of the collapse area may increase to 800-1000 lbs. Increase the size of the collapse area and the weight impacting operating companies is significant.

The various thicknesses of gypsum board available in regular, type X, improved type X and pre-decorated board are as follows:

  • ¼-in. A low cost gypsum board used as a base in a multi-layer application for improving sound control, or to cover existing walls and ceilings in remodeling.
  • 5/16-in. A gypsum board used in manufactured housing.
  • 3/8-in. A gypsum board principally applied in a double-layer system over wood framing and as a face layer in repair or remodeling.
  • ½-in. Generally used as a single-layer wall and ceiling material in residential work and in double-layer systems for greater sound and fire ratings.
  • 5/8-in. Used in quality single-layer and double-layer wall systems. The greater thickness provides additional fire resistance, higher rigidity, and better impact resistance.
  • ¾-in. Used in a similar manner to 5/8-in.
  • 1 in. Used in interior partitions, shaft walls, stairwells, chaseways, area separation walls and corridor ceilings. Manufactured only in 24 in. wide panels and usually installed as an integral part of a system.

Depending on the type and the use, gypsum board is manufactured with a tapered, square, beveled, rounded, or tongue and groove edge. Some gypsum board types may incorporate a combination of different edge types. The fire resistance of gypsum board can be described using three distinct terms: regular core, type ‘X’ core and improved type ‘X’ core.

Regular core gypsum board is made of a noncombustible core material composed mainly of gypsum. Although it does not have the specially enhanced fire-resistive properties of type ‘X’, regular core gypsum board affords a degree of natural fire resistance.

In the 1940s different gypsum board formulations were investigated to increase the naturally occurring fire resistance of regular core gypsum board. A new product was eventually introduced that clearly demonstrated “eXtra” fire resistance, hence the name “type X.” The basic components of type ‘X’ that give it a superior fire resistance are gypsum, glass fibers, and vermiculite.

In the 1960s, further modifications were made to the original successful type ‘X’ formulations of gypsum board used in some systems – particularly ceiling systems – without compromising the fire-resistive qualities. The new product demonstrates additional fire resistance over type ‘X’ core, and thus the term “improved type X” was coined. Gypsum board products make up the predominant portion of a family of materials identified as gypsum panel products. Gypsum panel products are defined as sheet materials consisting essentially of gypsum. They can be faced with paper or another material, or may be unfaced. Gypsum board, glass-faced sheathing materials with a gypsum core and unfaced gypsum-based products are all considered to be gypsum panel products. Technically, gypsum board is defined as the generic name for a family of sheet products consisting of a noncombustible core, primarily of gypsum, with a paper surfacing on the face, back, and long edges. In recent years the family of gypsum-based panel materials has grown to include panel products other than those with the familiar paper facers. A number of specialized gypsum panel products and gypsum boards have been developed for specific uses which include:

  • Gypsum Wallboard for interior walls and ceilings
  • Gypsum Ceiling Board for interior ceilings
  • Type X Gypsum Board for fire-resistance-rated building systems
  • Fiber Reinforced Gypsum Panels for interior and exterior walls, ceilings, and tile base
  • Gypsum Sheathing for exterior walls and roof systems
  • Glass Mat Gypsum Substrate for use as sheathing on exterior walls and ceilings
  • Gypsum Soffit Board for use on exterior soffits and ceilings
  • Water-Resistant Gypsum Backing Board for use as a tile base
  • Glass Mat Water-Resistant Gypsum Backing Board for use as a tile base
  • Gypsum Backing Board for use as a base for multi-ply systems
  • Gypsum Lath for use as a base for gypsum plaster
  • Gypsum Plaster Base for use as a base for veneer plaster
  • Gypsum Shaft Liner Board for shaft, stairway, and duct enclosures
  • Pre-decorated Gypsum Board for accent walls, office and movable partitions
  • Foil backed gypsum board for use as a vapor retardent

Identified by their technically correct names, gypsum board products are as follows: Gypsum Wallboard is produced primarily for use as an interior surfacing for buildings. It is the most often used commodity gypsum board and annually accounts for over 50 percent of all the gypsum board manufactured and sold in North America. Gypsum wallboard has a manila-colored face paper and is manufactured in a variety of thicknesses as both a regular- and a fire-resistant core material.

Gypsum Ceiling Board is an interior surfacing material with the same physical appearance as gypsum wallboard. Gypsum ceiling board is manufactured as a ½-inch thick material; it is designed for application on interior ceilings, primarily those intended to receive a water-based texture finish. It has a sag resistance equal to 5/8-inch thick gypsum wallboard.

Predecorated Gypsum Board has a decorative surface which does not require further treatment. The surfaces may be coated or painted, printed, textured, or have a film – such as vinyl wallcovering – applied. It is manufactured in a variety of thicknesses as both a regular- and a fire-resistant core material.

Water-resistant Gypsum Board is a gypsum board designed for use on walls primarily as a base for the application of ceramic or plastic tile. It is readily identified by its green-tinted face paper and is commonly referred to as “Greenboard.” It has a water-resistant core and a water-repellent face and back paper; it is generally installed in bath, kitchen, and laundry areas.

Gypsum Backing Board, Gypsum Coreboard, and Gypsum Shaftliner Panel are all designed to be used as base materials in multi-layer, solid and semi-solid, and shaftwall systems. Gypsum backing board is used as a base layer for other gypsum board materials in systems or as a base for dry claddings such as acoustic tile. Gypsum coreboard and gypsum shaftliner are manufactured with a type X core, using a specific edge configuration to facilitate installation into specialized stud systems and a type X core.

Exterior Gypsum Soffit Board is designed for use on the underside of eaves, canopies, carports, soffits, and other horizontal exterior surfaces that are indirectly exposed to the weather. It has water-repellent face and back paper and is more sag-resistant than regular wallboard. Exterior gypsum soffit board can be manufactured with a type X core and typically has a light brown face paper.

Gypsum Sheathing Board is used as a backing under exterior siding or cladding. It has a water-repellent face and back paper and can be manufactured with a water-resistant core. Depending on the thickness of the board, gypsum sheathing board is manufactured with either a square or a tongue-and-groove edge and a fire-resistive core. It generally has a brown or light black face paper.

Gypsum Base for Veneer Plaster has a distinctive blue-tinted face paper that is treated to facilitate the adhesion of thin coats of hard, high strength gypsum veneer plaster. It is produced in sheets that are the same width as gypsum wallboard and can be manufactured with a fire-resistive core. Application of Gypsum Board

A wide variety of gypsum board application methods are available to meet virtually any need in building design and construction. Gypsum board is applied in either single-layer or multi-layer systems to achieve specific fire or sound ratings. Gypsum board is applied over wood or steel framing or furring. It is also applied to masonry or concrete surfaces, either laminated directly or attached to wood furring strips or steel furring channels. Gypsum board ceilings can be directly attached to joists or trusses or attached to furring or grid systems suspended below structural members. Gypsum board is generally attached to the framing with nails, screws, or staples. Although nails are commonly used in wood frame construction, screws are often preferred because they are applied with automatic screw guns, have excellent holding power, and reduce the possibility of nail pops. A combination of nails and screws may also be used, with nails along edges and screws in the field. Staples are used because they are economical and can be quickly applied with staple guns; however, the use of staples should be limited to the base-layer in multi-layer systems or to gypsum sheathing on wood framing. Gypsum board wall and ceiling surfaces are typically decorated with paint, texture, wallpaper, tile, or paneling. When pre-decorated gypsum board is used, joints are generally covered with matching molding or battens; no additional finishing or decoration is necessary. Single-Layer Application

  • Single-layer gypsum board applications are the most common in light commercial and in residential construction.
  • These systems rely on one layer of gypsum board attached to framing or furring.
  • Although single-layer gypsum board systems are generally adequate to meet most minimum requirements for fire resistance and sound control, multi-layer systems are preferred for higher quality construction and to upgrade beyond the "bare minimums" of many code requirements.

Multi-Layer Application

  • Multi-layer systems have two or more layers of gypsum board and are used to meet higher sound and fire resistance requirements or to enhance these comfort and safety qualities beyond minimum code requirements.
  • They also provide better surface quality because face layers can often be laminated over base layers eliminating many or all of the fasteners in the face layer. In addition, face-layer joints are stronger by virtue of the continuous backing provided by the base layers.
  • Nail pops and ridging are less frequent and imperfectly aligned framing has less effect on the quality of the finished surface.

GYPSUM BOARD TYPICAL MECHANICAL AND PHYSICAL PROPERTIES (GA-235-10) A common misconception is that there are just two basic types of drywall—regular and type X—and beyond this difference, drywall products from various manufacturers are about the same. However, laboratory fire tests by United States Gypsum Company and various independent testing organizations provide strong evidence that there are significant fire-performance differences between drywall products from various manufacturers. It is well known in the construction industry that the single most important characteristic of gypsum drywall is its fire resistance. This is provided by the principal raw material used in its manufacture, CaSO4- 2H2O (gypsum). As the chemical formula shows, gypsum contains chemically combined water (about 50% by volume). When gypsum drywall panels are exposed to fire, the heat converts a portion of the combined water to steam. The heat energy that converts water to steam is thus used up, keeping the opposite side of the gypsum panel cool as long as there is water left in the gypsum, or until the gypsum panel is breached.

  • In the case of regular gypsum panels, as the water is driven off by heat, the reduction in volume within the gypsum causes large cracks to form, eventually causing the panel to fail.
  • In a special fire test designed to demonstrate the relative performance of different types of gypsum cores (described later in this section), it was shown that in a fire with a temperature of 1,850ºF, a 5/8" thickness of regular-core gypsum panels would fail in this manner in 10 to 15 minutes.
  • Type X gypsum panels, such as Sheetrock brand Firecode gypsum panels, have glass fibers mixed with the gypsum to reinforce the core of the panels.
  • These fibers have the effect of reducing the extent of and size of the cracks that form as the water is driven off, thereby extending the length of time the gypsum panel can resist the heat without failure.
  • Fire test results indicate that the same thickness of the type X gypsum drywall exposed to the same temperature (1,850ºF) will last 45 to 60 minutes.

USG has developed a third-generation gypsum drywall product called Sheetrock brand Firecode C gypsum panels that provides even greater resistance to the heat of fire. The core of Firecode C contains more glass fibers than type X—but also a shrinkage-compensating additive, a form of vermiculite that expands in the presence of heat at about the same rate as the gypsum in the core shrinks (from loss of water). Thus the core becomes highly stable in the presence of fire and remains intact even after the combined water is driven off. Tests have shown that this third-generation product resisted the fire for more than two hours, as compared to 45 to 60 minutes for the type X, and 10 to 15minutes for the regular panel under the same test conditions.

In a future posting we’ll discuss the issues facing the fire service related to the newest generation of impact resistant gypsum board that will restrict or preclude entirely our ability to breach walls in residential or commercial occupancies. Here are some links and Spec Sheets to look at in advance, HERE , HERE, HERE and HERE  

References and Links Summarizing the many different types of gypsum board used in the industry, this quick reference gives typical uses of, and the ASTM and CSA standards for, each type. Also included is the appropriate industry standard designation for the installation of each type of gypsum board, along with the sizes and thicknesses generally available. Download


APPLICATION OF GYPSUM SHEATHING (GA-253-07)

This publication describes the industry's latest recommendations for handling, storing, and installing gypsum sheathing under a variety of conditions. A must for anyone hanging gypsum sheathing or involved in EIFS work. Download

  


FIRE-RESISTANT GYPSUM SHEATHING (GA-254-07)

This publication describes the advantages, recommended uses, limitations, and properties of gypsum sheathing in exterior walls.

Download

Gypsum Construction Handbook

  • Reference guide of construction procedures for gypsum drywall, cement board, veneer plaster and conventional plaster.

Trade Associations and other Organizations

  • Association of the Wall and Ceiling Industry (AWCI)—Provides services and undertake activities that enhance the members' ability to operate a successful business. AWCI represents acoustics systems, ceiling systems, drywall systems, exterior insulation and finishing systems, fireproofing, flooring systems, insulation, and stucco contractors, suppliers and manufacturers, and allied trades.
  • ASTM International (ASTM)—Provides a global forum for the development and publication of voluntary consensus standards for materials, products, systems, and services. In over 130 varied industry areas, ASTM standards serve as the basis for manufacturing, procurement, and regulatory activities. Provides standards that are accepted and used in research and development, product testing, quality systems, and commercial transactions around the globe.
  • Ceilings and Interior Systems Construction Association (CISCA)—Association for the advancement interior commercial construction, providing education, technical guidance and related resources. CISCA membership includes over 600 of the leading contractors, distributors, manufacturers and independent manufacturer's representatives worldwide.
  • Gypsum Association (GA)—Founded in 1930, GA promotes the use of gypsum while advancing the development, growth, and general welfare of the gypsum industry in the United States and Canada on behalf of its member companies.
  • ICC Evaluation Service (ICC-ES)—Provides technical evaluations of building products, components, methods, and materials and issues reports on code compliance to building regulators, contractors, specifiers, architects, engineers, and the public.

Relevant Codes and Standards

Guide Specifications

NIOSH LODD Report Released on Fire and Collapse Which Killed Two Chicago Firefighters

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NIOSH LODD Report Released on Fire and Collapse Which Killed Two Chicago Firefighters
F2010-38  Two Career Fire Fighters Die and 19 Injured in Roof Collapse during Rubbish Fire at an Abandoned Commercial Structure – Illinois

NIOSH Executive Summary
On December 22, 2010, a 47-year-old male (Victim # 1) and a 34-year old male (Victim # 2), both career fire fighters, died when the roof collapsed during suppression operations at a rubbish fire in an abandoned and unsecured commercial structure. The bowstring truss roof collapsed at the rear of the 84-year old structure approximately 16 minutes after the initial companies arrived on-scene and within minutes after the Incident Commander reported that the fire was under control. The structure, the former site of a commercial laundry, had been abandoned for over 5 years and city officials had previously cited the building owners for the deteriorated condition of the structure and ordered the owner to either repair or demolish the structure. The victims were members of the first alarm assignment and were working inside the structure. A total of 19 other fire fighters were hurt during the collapse.

Contributing Factors

 

  • Lack of a vacant / hazardous building marking program within the city
  • Vacant / hazardous building information not part of automatic dispatch system
  • Dilapidated condition of the structure
  • Dispatch occurred during shift change resulting in fragmented crews
  • Weather conditions including snow accumulation on roof and frozen water hydrants
  • Not all fire fighters equipped with radios.

Key Recommendations

  • Identify and mark buildings that present hazards to fire fighters and the public
  • Use risk management principles at all structure fires and especially abandoned or vacant unsecured structures
  • Train fire fighters to communicate interior conditions to the Incident Commander as soon as possible and to provide regular updates
  • Provide battalion chiefs with a staff assistant or chief's aide to help manage information and communication
  • Provide all fire fighters with radios and train them on their proper use
  • Develop, train on, and enforce the use of standard operating procedures that specifically address operations in abandoned and vacant structures

NIOSH Recommendations

  • Recommendation #1: Fire departments and city building departments should work together to identify and mark buildings that present hazards to fire fighters and the public.
  • Recommendation #2: Fire departments should use risk management principles at all structure fires and especially abandoned or vacant unsecured structures.
  • Recommendation # 3: Fire departments should train fire fighters to communicate interior conditions to the Incident Commander as soon as possible and to provide regular updates.
  • Recommendation # 4: Fire departments should consider providing battalion chiefs with a staff assistant or chief's aide to help manage information and communication.
  • Recommendation # 5: Fire departments should provide all fire fighters with radios and train them on their proper use.
  • Recommendation # 6: Fire departments should develop, train on and enforce the use of standard operating procedures that specifically address operations in abandoned and vacant structures.
  • Recommendation # 7: Fire departments should develop, implement and enforce a detailed Mayday Doctrine to ensure that fire fighters can effectively declare a Mayday.
  • Recommendation # 8: Fire departments should ensure that the Incident Commander maintains close accountability for all personnel operating on the fireground
  • Recommendation # 9: Fire departments should ensure that fire fighters are trained in fireground survival procedures.
  • Recommendation #10: Fire departments should ensure that all fire fighters are trained in and understand the hazards associated with bowstring truss construction.

FULL NIOSH LODD REPORT and RECOMMENDATIONS, HERE

 

The tragic events in the City of Chicago on Wednesday December 22, 2010, when Chicago Firefighter Edward J. Stringer – Engine Co.63 and Firefighter/EMT Corey D. Ankum, Truck Co.34 were killed in the line of duty while operating at a structure fire in an abandoned one-story brick building in the 1700 block of East 75th Street on the City’s South side, exemplifies the demands, challenges and sacrifice that come with responsibilities, duty and sworn obligation  that distinguishes the honorable profession of being a firefighter.     

The fire was first reported at about 06:48 hours during the night and day tour shift change, with companies arriving at 06:52 hours reporting moderate fire in the  buildings northeast corner. The single story commercial structure was vacant, however it was readily known that squatters were known to seek shelter in the abandoned structure especially give the harsh weather being experienced in the city. The fire was quickly contained at approximately 07:00 hours according to published reports, and radio communications, with coordinated suppression, search and rescue and ventilation operations being conduction by companied both within the interior and on the roof. 

Other Operational Safety Insights and Considerations from CommandSafety.com and Buildingsonfire.com

  • During all operations involving actual or suspected Bowstring Truss Roofing Support Systems Command and Company Officers should be sensitive to risk assessment indicators related to both fire induced conditions as well as environmental and age induced factors.
  • Pre-plan your buildings look at the construction, components, features and condition of the building; there is a tremendous amount of information out there. Understand and comprehend what to look for, what it is that you’re looking at and more importantly make sure the information is retrievable for on-scene application and that the information is utilized when formulating IAP and in the dynamic risk assessment process
  • During Dynamic Risk Assessment, special attention should be focused on Predicated Building Performance common to identified building systems, features and structural systems that are based upon Occupancy Performance and NOT Occupancy Type.
  • The Federal Emergency Management Agency’s (FEMA) United States Fire Administration (USFA) issued a special report examining the characteristics of fires in vacant residential buildings. The report, Vacant Residential Building Fires, was developed by USFA’s National Fire Data Center and provides useful insights and recommendations. Link HERE
  • When developing incident action plans and operational assignments at incidents involving possible Vacant, Unoccupied or Abandoned structures, command and company officers shall implement a formulative risk -benefit assessment consistent with departmental procedures, policies and expectations.
  • Be knowledgable of operational factors and considerations related to operations at Vacant, Unoccupied or Abandoned structures; HERE and HERE
  • Read the Newest NIOSH Alert: Preventing Deaths and Injuries of Fire Fighters at Structure Fires, HERE
  • Start considering building; age, deterioration, environmental impacts and influences in your IAP and tactical considerations, we at times forget to consider these performance indicators effectively during initial or sustained operations.
  • Learn more about Building Construction, Occupancy Profiling, Reading a Building, Occupancy Risk versus Occupancy Type and always consider Tactical Patience.
  • Increase your knowledge on Structural Collapse indicators especially for buildings of masonry construction in both Type III and Type IV construction.
  • There is a Predictability of Performance in all Buildings and Occupancies with Heavy Timber or Built-up Bowstring Truss Structural Systems; Know what they are.
  • Understand what to look for in Heavy Timber or Built-up Bowstring Truss Structural System integrity related to; Age and Deterioration, Gravity, Cross Grain Shrinkage, Wood Defects that are self-evident in chords and web members, Upper Chord Buckling, Lower Chord splitting or failure points, web splitting or pull-outs, multiple roofing systems or membranes, multiple void spaces, compromised bearing walls or pilasters, compromised or degraded bearing points or truss ends.
  • Learn to identify masonry wall features and what they mean towards tactical operations
  • In smaller single story occupancies; any loss of structural integrity of a single truss component would likely cause the compromise or collapse of adjacent truss components and connective decking planks due to the interdependence and connectivity of the roofing support (trusses), purlins, rafters and roofing planks and outer membrane system. 
  • Typically the failure of one bowstring truss span will compromise or cause the collapse of each adjacent truss to either side of the original affected truss causing the failure of a sizeable roof area.
  • Companies operating on such affected roof area areas are subject to high risk and vulnerability should the roof area fail. Refer to the incident conditions and structural collapse from the Waldbaum’s Collapse, FDNY August 2, 1978. Go to the incident overview at Commandsafety.com HERE.
  • In smaller square foot commercial occupancies that have shallow depth bowstring truss components and both limited spans (less than 100 linear feet clear span) and number of trusses (six or less) the likelihood of a catastrophic roof collapse should be considered highly predicable in all incident action plans and during incident status monitoring.
  • The loss of load bearing and load transfer capabilities at these wall connections can contribute towards failure and collapse conditions. The end connections points (end cap or end shoe) of a bowstring truss are critical towards maintain truss performance and structural integrity.
  • The loss of truss axial orientation, resultant excessive deflection, loss of integrity of chord/ web geometry and connection points can lead to failure mechanisms and a cascading effect due to transferring of loads and possible overstressing and directly lead to subsequent failures.
  • It should be noted that fire service personnel should have a high degree of respect for the danger and susceptible risk imposed by compromised or failing bearing and non-load bearing walls.
  • Collapse zones must be established and access controlled based upon physical incident scene layout, access and proximal exposure structures.
  • All fire service personnel should have awareness level training and an understanding of recognizing collapse indicators for buildings of masonry construction and tactical safety considerations
  • Company and Command Officers must have a higher level of knowledge and training to be able to recognize subtle or obvious construction, conditions or indicators that will affect IAP, strategic, tactical or task assignments and be able to act upon those indicators with immediacy and urgency as conditions and risk dictate.
  • The Collapse Zone should be at a minimum be equal to the full height of the exterior masonry wall face and also take into consideration additional distance due building material momentum, bounce and toss due to individual bricks, steel lintels and other components and materials acting as projectiles and traveling distances greater than the defined “collapse zone”.

From CommandSafety.com' s 2010 postings: Chicago: Anatomy of a Building and its Collapse and Chicago: Anatomy of a Building and its Collapse-PDF Download

Some additional Insight Materials for discussion from CommandSafety.com and Buildingsonfire.com   

Ordinary and Heavy Timber Constructed Occupancies Training Download 

Note: CommandSafety.com and Buildingsonfire.com is in the process of revising and expanding this Training Download.

We hope to have the update published in early September 2011. Watch for posting announcements

Take at Look at this: Occupancy Risks versus Occupancy Types

Resources:

  • National Firefighter Near-Miss Reporting System Operational Safety Considerations at Ordinary and Heavy Timber Constructed Occupancies PowerPoint Program developed by Christopher Naum, HERE  
  •  Informational Support  Narrative download, HERE


Do you know what to look for upon arrival?
What Building features and factors will affect your operations?
 

Program Screenshot

 

The IAFF Fire Ground Survival Program (FGS) is the most comprehensive survival-skills and mayday-prevention program currently available and is open to all members of the fire service. Incorporating federal regulations, proven incident-management best practices and survival techniques from leaders in the field, and real case studies from experienced fire fighters, FGS aims to educate all fire fighters to be prepared if the unfortunate happens. 

 

 

 

 

 

For links to the IAFF Fire Ground Survival Program, HERE and HERE

The program will provide participating fire departments with the skills they need to improve situational awareness and prevent a mayday. Topics covered include:

  • Preventing the Mayday: situational awareness, planning, size up, air management, fitness for survival, defensive operations.
  • Being Ready for the Mayday: personal safety equipment, communications, accountability systems.
  • Self-Survival Procedures: avoiding panic, mnemonic learning aid “GRAB LIVES”— actions a fire fighter must take to improve survivability, emergency breathing.
  • Self-Survival Skills: SCBA familiarization, emergency procedures, disentanglement, upper floor escape techniques.
  • Fire Fighter Expectations of Command: command-level mayday training, pre-mayday, mayday and rescue, post-rescue, expanding the incident-command system, communications.

 
 
Take some time to look at the Photos from Tom Olk at http://olkee.smugmug.com/

 

Chicago Fire Department Funeral Service For Fire Fighter Ed Stringer

CHICAGO FIRE DEPARTMENT FUNERAL SERVICES FOR FALLEN FIRE FIGHTER EDWARD STRINGER Engine Co # 63 & Truck Co # 16 :

CHICAGO FIRE DEPARTMENT FUNERAL SERVICES FOR FALLEN FIRE FIGHTER EDWARD STRINGER Engine Co # 63 & Truck Co # 16

CHICAGO FIRE DEPARTMENT FUNERAL SERVICE FOR FIREFIGHTER COREY ANKUM FROM ENGINE CO#72 AND TOWER LADDER # 34 :

CHICAGO FIRE DEPARTMENT FUNERAL SERVICE FOR FIREFIGHTER COREY ANKUM FROM ENGINE CO#72 AND TOWER LADDER # 34

Chicago Fire Department 3-11 Alarm Fire W/a EMS Plan 2 And a Mayday For the Roof collapse At The Working Fire :

Chicago Fire Department 3-11 Alarm Fire W/a EMS Plan 2 And a Mayday For the Roof collapse At The Working Fire

 

Remembrance: Waldbaum’s Supermarket Fire and Collapse FDNY 1978 – 2011

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The Waldbaum’s Supermarket Fire and Collapse FDNY 1978 - 2011

The Waldbaum Super market fire, Brooklyn, New York occurred on August 2, 1978. Six firefighters died in the line of duty when the roof of a burning Brooklyn supermarket collapsed, plunging 12 firefighters into the flames. The fire began in a hallway near the compressor room as crews were renovating the store, and quickly escalated to a fourth-alarm. Less than an hour after the fire was first reported, nearly 20 firefighters were on the roof when the central portion gave way. 

The FDNY members killed in the Waldbaum’s fire included:
• Lt. James E. Cutillo, Battalion 33
• Firefighter Charles S. Bouton, Ladder Company 156
• Firefighter Harold F. Hastings, Battalion 42
• Firefighter James P. McManus, Ladder Company 153
• Firefighter William O’Connor, Ladder Company 156
• Firefighter George S. Rice, Ladder Company 153 

Remembrance and Honor

Detailed information and insights previously posted on CommandSafety.com, HERE