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A Delicate Balance

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A Delicate Balance

 

Light Weight construction has given way to Engineered Structural Systems (ESS) which in today’s evolving fireground, have an even more extensive array of performance, operational and integrity issues that affect a building’s performance under fire conditions.To unequivocally state that nothing has changed in buildings, occupancies, fire flow delivery rates and demands for increased proficiencies of our firefighters, company and command officers is absurd, ignorant and dangerous.

“It’s a lot more than just Stretching the Line…and going in….”

 
Building Knowledge=Firefighter Safety…so we can do our job—and that’s firefighting .Another classic illustration by Paul Combs.

Another classic illustration by Paul Combs

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Smart and Intelligent Firefighting

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The continuing importance of fire research and the strive to understand fire and its relationship to buildings, systems and firefighting operations is challenging long held beliefs and anecdotal basis; encouraging stimulating debate and discussions- resulting in thought provoking and insightful theories, positions statements and a time of retrospect and critical self-examination that will influence numerous facets of the fire service profession.

It’s not about NOT fighting fires, but rather fighting fires smarter.

Building Knowledge=Firefighter Safety.

The Art and Science of Fire Fighting – Buildingsonfire

 

Engineered Structural Support (ESS) system: Been in the Field lately?

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Been in the field lately looking at your buildings under construction? Here’s a new look at a common Engineered Structural Support (ESS) system.

Here’s  today’s Taking it to the Streets session; Take a look at this Engineered Structural Support (ESS) system. There are two critical component systems depicted here in this photo- can you tell what they are? Take a close look at the ESS T…russ components. They are nothing new, but they do cause a stir when they make their way back into main stream fire service discussions as firefighters and officers “rediscover” these type of systems, their use, presence and operational risk and profiling.

So let’s start the dialog:

  • Can you name the type of ESS Truss, the inherent characteristics, design and function | typical applications | risks and operational concerns.
  • What impact will fire impingement have on the ESS assembly in either foor or roof systems?
  • How can you identify these assemblies and building characteristics unpon arrival?
  • What fireground strategies and tactics would you employ upon arrival at an occupancy with this type of ESS?
  • Don’t forget to look at the second system component that I mentioned earlier;
  • Can you identify it? Its relationship to the other system and other inherent performance issues?

 

 

Lots to talk about, look at and share. Any street stories to share-please post. I’ve got a few more in this series to post after we get some dialog and insights….
We’ve cross posted this on our Buildingsonfire Facebook page (HERE), if you haven’t checked it out, please follow the link, there’s been some great discussions and insights being shared from around the country…
Don’t forget to spread the word about Buildingsonfire.com \ CommandSafety.com and Buildingsonfire on FB…send the links along and like….Dont forget about CommandSafety on Twitter and Buildingsonfire on twitter also.

Engineering Ground Zero

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To commemorate the anniversary of 9/11, NOVA presented an epic story of engineering, innovation, and the perseverance of the human spirit. With extraordinary access granted by The Port Authority of New York and New Jersey, “Engineering Ground Zero” follows the five-year construction of One World Trade Center (1 WTC) and the National September 11 Memorial & Museum. This is an encore presentation originally aired on 09/07/2011.

NOVA captures the behind-the-scenes struggle of architects and engineers to make the buildings safe and highly secure under the pressures of a tight schedule, the demands of practical office space and efficient “green” architecture, and the public’s expectations of a fitting site for national remembrance. The program features interviews with 1 WTC architect David Childs; Chris Ward, the Port Authority’s executive director; Mayor Michael Bloomberg, chairman of the 9/11 Memorial Foundation; and Michael Arad, the man behind the breakthrough concept for the 9/11 Memorial.

Watch the Program
Watch the entire program online now.

Reflections on the 9/11 Memorial
Visitors to the 9/11 Memorial share their impressions.

 

Defining Buildings and their Inherent Characteristics

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Defining Buildings and Inherent Charactoristics

Today’s evolving fireground demands greater insights and an increased understanding of buildings, occupancy risk profiling (ORP) and building anatomy. Recently there has been a movement that has categorized buildings into two groups: engineered and legacy construction.

I strongly believe this is far too limiting and restrictive which is resulting in missed opportunities to develop further insights into other building systems and occupancy risk profiling. In order to refine categories that provide corresponding values related to inherent construction features, systems, collapse and comprise, performance characteristics, fire integrity, resistance etc., the following building anatomy categories are suggested and promoted:

Building Anatomy

Construction Systems

  • Heritage
    • Pre-1900
  • Legacy
    • 1900-1949
  • Conventional
    • 1950-1979
  • Engineered
    • 1980-2001
  • Integrated Hybrid Systems
    • 2002- current …
  • Composite Engineered Systems
    • 2010 – current …

Give some thought to the time spans and the types of buildings at would compromise each group. I’ll post an upcoming article with expanded narrative on each…..

Heavy Fire in 10,000 Square Foot Huntingtown (MD) Mega Mansion Injuring 9 Firefighters

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Aerial View of Residence

At 2356 hours on Saturday March 19, 2011, the Huntingtown Volunteer Fire Department was alerted for the reported Chimney Fire at 3380 Soper Road in Huntingtown. While en-route, firefighters received information that the owner was trying to extinguish the fire and believed it had spread to the attic. Units alerted were: Chief 6A (Montgomery), Chief 6C (Morris), Safety 6 (McKenny), Lieutenant 6 (Buckler), Engine 62 (Smith), Engine 61 (Gaylor), Squad 6 (Wallace), Tanker 6 (Robison), Brush 6 (Montgomery Jr), Ambulance 68 (Jeffery, M) and Ambulance 69 (Bevard).

Chief 6C arrived to find smoke showing from the second floor eves of a 10,000 square foot mega-mansion. Engine 62 arrived, laying a supply line, advancing the 400′ pre-connect and began pulling the ceiling, at which time; they found fire in the attic spreading rapidly. Within seconds, conditions deteriorated significantly resulting in zero visibility and intense heat. Command immediately ordered evacuation tones. Due to high winds off the river, water supply issues, distance from the fire house, and the size of the structure (10,000 square feet), fire spread rapidly.

Immediately thereafter, the second floor flashed over resulting in nine firefighters being injured, five from Huntingtown Volunteer Fire Department and four from Prince Frederick Volunteer Fire Department. As a result of the unbearable heat, several firefighters took extreme measures such as jumping out of windows and running through walls to evacuate the structure. Chief 6A immediately ordered a Full Second Alarm with two Tankers. Later in the incident, additional units were Special Alarmed to the scene. On scene were several ambulances and medics providing care to the injured firefighters.

Although units from Calvert, Charles, St. Mary’s, Anne Arundel, and Prince Georges were utilized, fire spread in such a rapid manner that the home is considered a total loss.

Two of the Huntingtown firefighters were seriously injured and transported by aviation to Washington Hospital Center. The other seven firefighters were transported to Calvert Memorial Hospital for evaluation and treatment. Subsequently, six of those initially transported to Calvert Memorial, two from Huntingtown and four from Prince Frederick, were transported to Baltimore Shock Trauma and Washington MedStar for follow-up evaluation and treatment for smoke inhalation. All seven firefighters have since been released.

The event narrative was issued through Chief Jonathan Riffe of the Huntington VFD, MD (HERE)

 

 

 

We’ll be posting more information on Extreme Fire Behavior, Vent Paths, Wind Driven Fire Considerations in the next few days.

Near-Misses, Maydays and Floor Collapses

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Do you know what's underneath you as you're making entry?

If you’ve been paying attention to the latest news and on the job reports these past few days, you may have noticed there’s been an emerging trend evident in near miss, close-calls resulting in maydays, RIT deployments and self-rescue resulting from floor compromise and floor collapse. 

As I was doing some research and posting links related to the first one or two events on Buildingsonfire on Facebook, HERE, it became evident that there was an immediate opportunity to get some learning’s and insights out. If you have a chance head over to Facebook and link into Buildingsonfire and check out the incident links posted as well as some immediate report links.

I’ll plan to develop some operational safety and awareness insights related to building construction, floor systems and operational integrity in the next few days. I’ll get a comprehensive list of events and incident parameters compiled and posted also.

In the meantime here are some links I pulled together that you should take the time to read and share with your companies, personnel and staff…..

This seems like a good time to have a ten minute drill on these events as Operating Expeeince (OE) on floor systems and operational safety.

Reference Links for Operational Insights and Operating Experience (OE)

Here’s some screen shots from Buildingsonfire on Facebook. Go HERE or follow the link at the left column. Join the growing list of 3500 fans with Buildingsonfire on Facebook and Buildingsonfire.com (fully launching in January, 2011)

Taking it to The Streets on FireFighter Netcast.com

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Taking it to the Streets

With Christopher Naum

A New Monthly Radio Talkshow on  FireFighter Netcast.com  Premiering on Wednesday July 21 at 9pm ET

A Buildingsonfire.com Series and FireFighter Netcast.com Production 

Advancing FireFighter Safety and Operational Intergrity for the Fire Service through provocative insights and dynamic discussions dedicated to the Art and Science of Firefighting and the Traditions of the Fire Service. 

Watch for More Taking it to the Streets  Annoucements over the next seven days here on CommandSafety.com, TheCompanyOfficer.com and on Firefighter Netcast.com 

Programming

Ten Minutes in the Street

  • Presenting an informational recap and discussion on leading topcs, events and issues from the past 30 days.

 Feature Segments Program will have one (1) selected segment based upon topic and guest 

 Buildingsonfire

  • Addressing today’s topical issues within the areas of Firefighting, Building Construction, Dynamic Risk Assessment, and Command & Tactical Safety
    • Open interative discussions and call-in
  • Street Stories
    • Presenting first-hand accounts and insights on an event, response or operation with a featured guest
    • Open interative discussions and call-in
  • Smoke Showin’
    • Featured Guest Interviews and discussions focusing on the NFFF Firefighter Life Safety Initiatives and Everyone Goes Home Campaign 
    • Open interative discussions and call-in

HRE History Repeating Events  

  • Discussion on recent History Repeating Events, LODD, NIOSH Reports or other
  • Open interative discussions and call-in

 A View from the Street

  • Closing Commentary on timely and relevant issues affecting the Fire Service

Truss and Engineered Systems Placards

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11-22-2008 9-05-24 PMThe Aldridge-Benge Firefighter Safety Act of 2008 became law on December 13, 2009 after unanimously passing the Florida House and Senate in 2008. The new law is named in honor of two Orange County, Florida  Firefighters, Todd Aldridge and Mark Benge, who died in 1989 after the roof of a gift shop collapsed; the bill is called the Aldridge-Benge Firefighter Safety Act. For a copy of the Act, HERE

 The Aldridge-Benge Firefighter Safety Act will require owners of any commercial, industrial, or any multi-unit residential structure, to mark these buildings in a manner that identifies them as light-frame truss-type construction. A sign or symbol will alert firefighters of the construction material and allow them to modify their tactics for fighting fires in buildings.

12-18-2009 9-58-41 AM

Aldridge-Benge Florida Placards

633.027 Buildings with light-frame truss-type construction; notice requirements; enforcement.

(1) The owner of any commercial or industrial structure, or any multiunit residential structure of three units or more, that uses light-frame truss-type construction shall mark the structure with a sign or symbol approved by the State Fire Marshal in a manner sufficient to warn persons conducting fire control and other emergency operations of the existence of light-frame truss-type construction in the structure.

(2) The State Fire Marshal shall adopt rules necessary to implement the provisions of this section, including, but not limited to:
(a) The dimensions and color of such sign or symbol.
(b) The time within which commercial, industrial, and multiunit residential structures that use light-frame truss-type construction shall be marked as required by this section.
(c) The location on each commercial, industrial, and multiunit residential structure that uses light-frame truss-type construction where such sign or symbol must be posted.

(3) The State Fire Marshal, and local fire officials in accordance with s. 633.121, shall enforce the provisions of this section. Any owner who fails to comply with the requirements of this section is subject to penalties as provided in s. 633.161

Truss Systems Placards For Firefighter Safety from across the United States. This was originally posted HERE . Check out the link for examples of various types of placards from various locations around the US. Additional Links HERE and HERE

- The Valley Independent Sentinel covers the proposed law in Derby, Can You Spare Five Dollars (To Save A Life)?.
- NFPA Journal: It’s not lightweight construction. It’s what happens when lightweight construction meets fire.
- Firehouse.com: Understanding the Dangers of Lightweight Truss Construction

-FireRescue1.com: Enhancing Firefigher SAfety, One Step at a time:

 New York State:  PDF HEREFR20Poster0320Large

The following represent various state or local level efforts that have been instituted to provide the fire service with identification placards for attachment to buildings constructed with truss support systems. What we don’t have is a unified national standard, nor do we have these systems in all states. The political strife and lobbying backed by special interest groups and mfg. associations that DO NOT Support these types of placard systems is appalling and inexcusable. This post is to make many of you aware of the various enhacements that exist to support firefighter safety.

New York State TRUSS TYPE CONSTRUCTION PlacardsNYS 19 NYCRR Part 1264 – IDENTIFICATION OF BUILDINGS UTILIZING TRUSS TYPE CONSTRUCTION
http://www.dos.state.ny.us/code/trussID.htm

More from New York State…..
http://www.trussid.org/index.html

City of San Francisco, CA
5.05 Signage of Buildings with Wood or Lightweight Steel Truss, or Composite Wood Joist (TJI) or Roof Construction
Reference: 2007 San Francisco Fire Code Section 507.3.2
http://www.sfgov.org/site/sffd_page.asp?id=80083

State of New Jersey TRUSS SIGNS (Truss Roof and Truss Floor Assembly Signs)
Exterior Placard NJAC 5:70 – 2.20(a)1 and 2 This attachment was provided by the New Jersey Division of Fire Safety and is referenced as Exterior Placard NJAC 5:70 – 2.20(a)1 and 2.
Truss roof signs are required by the New Jersey State Uniform Fire Code for buildings, which utilize either a floor or roof assembly consisting of truss construction. A truss sign gives early warning to fire and emergency service members that the roof and/or floor may be subject to early collapse in the event of a fire condition.

ISOSCELES TRIANGLE SIGNS
N.J.A.C. 5:70-2.20(a)1.
“The emblem shall be of a bright and reflective color, or made of reflective material. The shape of the emblem shall be an isosceles triangle and the size shall be 12 inches horizontally by 6 inches vertically. With letters of a size and color to make them conspicuous, shall be printed on the emblem, as shown in images below.”

N.J.A.C. 5:70-2.20(a)2
“The emblem shall be permanently affixed to the left of the main entrance door at the height of between 4 feet and 6 feet above the ground, and shall be installed and maintained by the owner of the building”.

NJtruss_signs

New Jersey Truss Placards

 

 

 

NIOSH Suggested Truss Placard Type
EXAMPLE LANGUAGE FOR A LAW REQUIRING LABELING OF BUILDINGS FOR THE FIRE SERVICE
This sample language is based on recommendations in the National Institute for Occupational Safety and Health (NIOSH) report entitled “NIOSH Alert: Preventing Injuries and Deaths of Firefighters due to Truss System Failures.”
The report states: “Consider placing building construction information outside the building. Include
information about roof and floor type.

The NIOSH report also recommends as part of pre-fire planning to: Record data regarding roof and floor construction (e.g., wooden joist, wood truss, steel joist, steel truss, beam and girder, etc.) [NFPA 2003]. The sample language below provides building labeling that identifies the building’s construction type, is simple yet logical, and should allow firefighters to quickly know the building’s floor and roof construction materials, promoting better and more complete information on the fireground and increased firefighter safety.

xxx Identification of structural construction. Structural construction types shall be identified by a sign or signs, in accordance with the provisions of this section.

xxx.1 Signs. Signs shall be affixed where a building or a portion thereof is classified as Group A, B, E, F, H, I, M, R-1, R-2, R-4 or S occupancy. The owner of the building shall be responsible for the installation of the sign.
xxx.2 New buildings and buildings being added to. Signs shall be provided in newly constructed buildings and in existing buildings where an addition that extends or increases the floor area of the building. Signs shall be affixed prior to the issuance of a certificate of occupancy or a certificate of compliance.

xxx.3 Existing buildings. Signs shall be provided in existing buildings. Signs shall be affixed within ninety days of being notified in writing by the Code Enforcement Official.

xxx.4 Contents of signs. Signs shall consist of a diagram 6 inches (152.4 mm)in height and width, with a stroke width of ¼ inch (6.4 mm). The sign background shall be reflective white in color. The diagram and contents shall be reflective red in color, conforming to Pantone matching system (PMS) #187. Where a sign is directly applied to a door or sidelight, it may be a permanent non-fading sticker or decal. Signs not directly applied to doors or sidelights shall be of sturdy, non-fading, weather resistant material.

xxx.5 Identification of construction classification. Signs shall contain the roman alphanumeric designation of the construction classification of the building, in accordance with the provisions for the classification of types of construction (types I through V) of the building code. The roman numeral designating construction classification shall be 1 inch (25.4 mm) minimum in height and have a stroke width of ¼ inch (6.4 mm) minimum, and it shall be reflective white in color on a background of reflective red.

xxx.6 Identification of year of construction. Signs shall indicate the building’s year of construction or major reconstruction. The arabic numeral indicating year of construction shall be 1 inch (25.4 mm) minimum in height and have a stroke width of ¼ inch (6.4 mm) minimum, and it shall be reflective white in color on a background of reflective red.

xxx.7 Identification of structural construction types. Signs shall contain the alphabetic designations identifying the structural construction types used in the building, as follows:

“W” shall mean sawn joist/rafter construction, wood members
“I” shall mean engineered I-joist construction, wood members
“S” shall mean steel construction
“T” shall mean truss type construction
“C” shall mean concrete construction

NIOSH Suggested Truss Placard

NIOSH Suggested Truss Placard

State of Florida, Truss Placard System 2008;
The Aldridge-Benge Firefighter Safety Act. The law was named in honor of Orange County firefighters Todd Aldridge and Mark Benge, who died in 1989 after the truss roof of a gift shop collapsed. Under the new law, owners of any commercial, industrial or multi unit residential structure, have to clearly mark if their buildings have lightweight roof or floor trusses, allowing firefighters to change their tactics when working in these types of structures

http://www.cfnews13.com/News/Local/2008/7/2/new_firefighter_protect….

633.027 Buildings with light-frame truss-type construction; notice requirements; enforcement
(1) The owner of any commercial or industrial structure, or any multiunit residential structure of three units or more, that uses light-frame truss-type construction shall mark the structure with a sign or symbol approved by the State Fire Marshal in a manner sufficient to warn persons conducting fire control and other emergency operations of the existence of light-frame truss-type construction in the structure.
(2) The State Fire Marshal shall adopt rules necessary to implement the provisions of this section, including, but not limited to:
(a) The dimensions and color of such sign or symbol.
(b) The time within which commercial, industrial, and multiunit residential structures that use light-frame truss-type construction shall be marked as required by this section.
(c) The location on each commercial, industrial, and multiunit residential structure that uses light-frame truss-type construction where such sign or symbol must be posted.
(3) The State Fire Marshal, and local fire officials in accordance with s. 633.121, shall enforce the provisions of this section. Any owner who fails to comply with the requirements of this section is subject to penalties as provided in s. 633.161.

Florida Placard

Florida Placard

 

Wheeling, Illinois Wood Truss Warning Signs
Attached is information from Wheeling, Illinois, who enacted thier own local code requriement. April 18, 1994 adopted Ordinance 2948 amending Title 14, Fire, of the Wheeling Municipal Code by adding Chapter 14.08 “Wood Truss Warning Signs”

State of Vermont
F or additional Info HERE

CITY OF CHESAPEAKE, VA TRUSS ID PROGRAM; A designated sticker is used for quick recognition of potential Collapse Dangers associated with TRUSS constructed buildings. The sticker is placed on every entry door of all commercial buildings with Truss construction. The use of trusses in building construction presents a great danger to firefighting personnel when those structures are involved in fire conditions. By design, the truss members in floor and roof assemblies will collapse, without warning, after being exposed to heat or flame contact for a very short period of time. Because of the inherent danger firefighters must face while operating within these buildings, a Truss Identification Program (TIP) has been instituted to alert personnel of the danger prior to beginning fire suppression operations. The Truss Identification Program is intended to alert the members of the Chesapeake Fire Department with pertinent pre-plan information before firefighting forces are committed to an interior attack.

The TIP shall be an ongoing program applied to all commercial buildings inspected by the Chesapeake Fire Department.
http://www.chesapeake.va.us/services/depart/fire/truss.shtml

City of Greencastle, Indiana

The City of Greencastle, Indiana and the Greencastle Fire Department recently enacted and approved an Engineered Lumber ID Program consisting of a sticker that is used for quick recognization of potential Collapse Dangers associated with Engineered Lumber constructed buildings. The sticker is placed on every electrical meter of all residential & commercial buildings with Engineered Lumber construction built after May 13th 2008. The news release states that; the use of this type of lumber in building construction presents a great danger to firefighting personnel when those structures are involved in fire conditions. By design, the Engineered Lumber in floor and roof assemblies will collapse, without warning, after being exposed to heat or flame contact for a very short period of time. Because of the inherent danger firefighters must face while operating within these buildings, an Engineered Lumber Identification Program (ELIP) has been instituted to alert personnel of the danger prior to beginning fire suppression operations.

The Engineered Lumber Identification Program is intended to alert the members of the Greencastle Fire Department with pertinent pre-plan information before firefighting forces are committed to an interior attack. The sticker is unobtrusive and is placed directly on a meter box, for example, and alerts the FD if either the floor joists and/or the trusses are made of and Engineered Lumber System and materials. The fire officers are already checking the utility boxes on all fires as part of their initial size-up. The ELIP shall be an ongoing program applied to all residential & commercial buildings inspected by the Greencastle Fire Department.

ORDINANCE 2008 – 4 states; AN ORDINANCE REQUIRING A REFLECTIVE SYMBOL ON STRUCTURES USING ENGINEERED LUMBER
WHEREAS, many new building structures currently use engineered lumber in their construction;
WHEREAS, some types of engineered lumber burn at a rate faster that other types of lumber; and
WHEREAS, in fighting fires, it would be helpful to know the types of materials used in the construction of a structure.

NOW THEREFORE be it ordained by the Common Council of the City of Greencastle as follows:
1. Definitions:
a. Engineered Lumber shall mean prefabricated I-joists, truss joists, and truss rafters, and laminated beams and studs.
b. Structure shall mean primary, secondary and accessory structures as defined in the Greencastle Zoning Code that have electrical meters that serve the structure.

2. All structures constructed with engineered lumber after the effective date of this ordinance must have a reflective symbol affixed to each electrical meter serving the structure.

3. The reflective symbol shall be in the form of a sticker, issued by the City of Greencastle that states that the structure is constructed with engineered lumber

4. Any person violating this ordinance by refusing to use the reflective symbol or by removing the reflective symbol shall be subject to a fine in an amount of $25.00 per violation. Each day that a violation occurs shall constitute a separate violation, subject to a separate fine.

5. The owner of any structure that was constructed with engineered lumber prior to the effective date of this ordinance is requested to place the reflective symbol on the electrical meter serving the structure on a voluntary basis.

This is another great example how local level insights, actions and legislation can go a long way in supporting fire service operational challanges as they relate to building construction systems, methodologies and materials. Remember, We can certainly work diligently AND cooperativley with local government officials to enhance incident operations and make our jobs safety, one step at a time….
For additional information on the Fire Department’s efforts in Greencastle, IN contact Lt. John Shafer, Lieutenant/Training Officer HERE.
 
An invaluable free on-line training program on Structural Stability of Engineered Lumber in Fire Conditions – is available from UL, check HERE for further information.
The 2006 NIOSH LODD Report, HERE