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Trusses or stick frame roof?

Trusses or stick frame roof?

Trusses or stick frame roof?

(OP)
I see more and more roof trusses where the trusses span from one beam to another beam instead of spanning from load bearing wall to load bearing wall.  Dont you think it defeats the purpose of trusses?  Dont you think it will be cheaper and nicer (higher ceiling) to just stick frame the roof?  What do you guys think?

RE: Trusses or stick frame roof?

You can often purchase trusses for nearly the same price as you can buy the 'sticks'

Dik

RE: Trusses or stick frame roof?

Other factors are speed of construction and labor costs.

RE: Trusses or stick frame roof?

Sometimes you can get away with raising the heel in order to accommodate the tall interior pitch.

RE: Trusses or stick frame roof?

I generally spec a 12" min heel in order to reduce the chances of ice damming...

Dik

RE: Trusses or stick frame roof?

Be wary of differences in height of 3 (or more)point supports and a rigid truss. You may find that it is not working as you designed it due to slightly different support heights.

A good example of this type of thing is the 4 legged timber chair that rocks between 2 legs.

RE: Trusses or stick frame roof?

Long multi-span wood trusses can have issues that occur with seasonal changes known as truss uplift. It is caused from moisture changes in the webs and chords. The center of a mult-span truss can lift up off the support. I have seen this on a simple 26 ft span truss that would lift 3/4" in the center every winter. This could be an issue in supporting a multi-span truss. It may be better to break into two or three simple spans.

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