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RE: Concrete floor on wood trusses

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Well, as it turns out, the client apparently wants to use a structural concrete slab to be supported on the wood floor trusses.  Without that information early on, I was just pointing out that wood can support concrete in certain instances.  I believe you had mentioned that it couldn't.

Eli Grassley <elig(--nospam--at)> wrote:
What are you basing any of that on??
The original post mentioned nothing about either the presence of any plywood sheathing, nor about the thickness of the concrete.
~~ Eli ~~
-----Original Message-----
From: David Topete [mailto:davetopete(--nospam--at)]
Sent: Tuesday, December 06, 2005 5:15 PM
To: seaint(--nospam--at)
Subject: RE: Concrete floor on wood trusses
Wouldn't exception 1 apply though?  Assuming diaphragm action is taken care of by 1-1/8" sheathing, couldn't the cocnrete be considered dead load going along for the ride?

Eli Grassley <elig(--nospam--at)> wrote:
The IBC does not allow support of concrete on wood.  See section 2304.12.  That?s a pretty solid argument I would say J
~~ Eli Grassley
-----Original Message-----
From: David Smith [mailto:smith1129(--nospam--at)]
Sent: Tuesday, December 06, 2005 11:50 AM
To: seaint(--nospam--at)
Subject: Concrete floor on wood trusses
I have a prospective client wanting a concrete floor slab poured on wood trusses.  The building will be steel-framed on the perimeter.
I am trying to get him to use steel bar joists rather than wood trusses.  Anyone have some good arguments against this?
Dave Smith
Smith Associates

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