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Report Number F2010-38

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by

Isaac Fricke

on 6 December 2017

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Transcript of Report Number F2010-38

The Structure
Type III Ordinary Construction
Built in 1926
6,700 sq.ft
Roof was separated into two parts, south and north sections
South section was a flat style roof
North section was a "Bowstring Truss" roof
The two types of roofs suggest the North section was added later on to the existing building
Incident Summary
Dispatched call as "smoke in the area" at 0648
First unit and battalion chief arrive on scene at 0651
Size up is given of a working structure fire in an abandoned commercial structure and requests a reinforced response at 0652
At 0657 a second alarm is issued, at this time fire attack teams are fighting fire in the North and South sides of the structure
0707, "Mayday" is called for roof collapse in North side of the structure
0708, rescue operations begin
0714, two firefighters are rescued as four are still left trapped
0724,first victim is transported to the hospital
0731, second victim is transported to the hospital
Cause of death was determined to be compressional asphyxia
Collapse Factors
Roof was made of "bowstring" construction, which has low relative tensile strength
Bowstring roof also only had two trusses supported by two load-bearing walls
4" of snow created a "Static Load" on the structure, putting more stress on the trusses
Water caused deterioration of the lumber of the trusses
Factors to Consider
This tragedy could have been avoided if some factors had been analyzed during operations
Interior attack should not have been conducted on an abandon structure with no life threat
Noticing that the building had a bowstring truss roof
Trusses are visible from the outside of the building, making it apparent that the roof sections are two different construction types
Renovations were made visible from the outside of the structure as windows and doors we covered up with masonry
Report Summary
On December 22, 2010,two Illinois firefighters were killed and 19 were injured in a roof collapse of an abandoned commercial structure.

Report Number F2010-38
Isaac Fricke
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