Bowstring Construction

Question 0

What part of the chord in a bowstring trusses have inadequate tensile strength?

Answer 0

The bottom

Question 1

Can we operate on bowstring truss roofs that are not the fire Bldg

Answer 1

Yes as long as it’s stable

Question 2

Can bowstring trusses failure occur without any fire impingmant?

Answer 2

Yes trusses have collapsed

Question 3

What are the difference in steel and wood truss roofs?

Answer 3

Steel will stretch and wood will fail without warning

Question 4

Can members operate on Bowstring truss roofs where there is light fire condition?

Answer 4

UNDER NO CIRCUMSTANCES shall any member operate on any roof that has any type fire contents or structural

Question 5

What are 5 reasons at a bow string truss bldg that the PRIMARY tactic is exterior operations?

Answer 5

1. Vacant bldg
2. Large or advanced fire
3. Timber trusses are involved in fire
4. The underside of the roof is involved in fire
5. Fire involves the attic area truss area

Question 6

To see if there is fire in bowstring truss in an attic or above the ceiling what are 2 ways to check for this?

Answer 6

Use the thermal imaging camera from below

Make a triangular cut in the sloping hip section in the front an for rear from a TL