Flashcards in Dunn Ch 1 Deck (9):
4 factors will increase the number of burning bld collapse:
-age of bld, life span 75-100 years
-LW materials; collapse more quickly
Unprotected lw steel bar joists fail when exposed to __ of fire?
5-10 minutes of fire
Definition of structural collapse ?
Any part of a building fails, no matter how small. Ex: glass falling from a window because the window frame was heated by fire & distorts allowing glass to fall out of frame or glass cracks & fails
Glass broken by a FF venting is a ?
Falling object. Glass falling from window because window frame was heated by fire & distorts allowing glass to fall out or glass cracks from heat & fails is Structural collapse
The most common falling object at a structure fire?
Broken glass from windows being vented
1/4" or 1/2" glass could weigh ?
2 1/2 or 5lbs
When trimming broken glass from windows, knock the glass shard ?
Commercial glass in more dangerous then residential glass ?
Because thickness & weight