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Re: WOOD - Engineered Lumber vs. Sawn Lumber

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I realize there are a lot of engineers out there who don't know or don't
care what the contractor has to do to build from a set of plans or what the
financial impact might be. I'm not going to debate the pros and cons of
that issue here. My only question is why is the deflection/stiffness
criteria more stringent for a GLB than for a sawn beam? Isn't a sawn beam
subject to creep as it drys out?

Bill Allen 

> From: Dennis S. Wish PE <wish(--nospam--at)>
> To: seaoc(--nospam--at)
> Subject: Re: WOOD - Engineered Lumber vs. Sawn Lumber
> Date: Friday, September 12, 1997 12:33 PM
> -----Original Message-----
> From: Bill Allen, S.E. @ ALLEN DESIGNS <BAllenSE(--nospam--at)>
> To: seaoc(--nospam--at) <seaoc(--nospam--at)>
> Date: Thursday, September 11, 1997 4:09 PM
> Subject: Re: WOOD - Engineered Lumber vs. Sawn Lumber
> >1. Try building a wall on a beam with a crown on it. I've gotten a lot
> >complaints from framers with regards to beams of "excessive" camber.
> >2. Sawn sections don't have this provision.
> >
> >Regards,
> >Bill Allen
> >----------
> Bill, I'd much rather have the contractor who is frustrated trying to
> a wall above a camber, rather than have the client take me to court
> of too much deflection.
> Dennis