Mike D. said:
Ialot of departments won't even send their guys into houses that are built of trusses.
There is a township in a suburban county here that has banned the use of trusses all together in construction
What they don't show is how rapid fire spreads in the void spaces which result from trusses in roofs, between floors, etc.
I was just talking to the owner of the business about the steel beam and steel truss idea. Using steel studs or steel trusses doesn't add to the combustibility (?) of a house, but under fire conditions I sure as hell wouldn't go up on a roof I knew was built on a steel skeleton. They use thin galvanized steel, which I can just see getting hot and twisting, and there goes your structural stability.
Very few modern FD's that I have familiarity with will even attempt to get onto a residential roof these days. Old logic was climb on, saw through, and hose the crap out of it. New logic is get folks out and fight from a safe distance. More over, save it from spreading to the neighbors and save this one's foundation. If the ladder reaches enough that you can saw while on the ladder, maybe try it. Otherwise, thats what insurance is for