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Re: Glu Lam Beams Exposed to the Weather

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It is unfortunate that the beams were exposed to the weather, but in my opinion, they will be OK. Ray gives good advice about getting them covered, but as for absorbing moisture to the point of delaminating and loss of strength, I would not worry. You to not have to specify for outside exposure. All glulam beams manufactured are with "wet use" adhesives (since the ANSI/AITC A190.1 standard in 2002). And the adhesives used today are much better than they were 10 to 15 years ago. If you need an inspection, here are a couple of names to contact.
SPS, Inc. -- Terry Peiffer in Anaheim, CA (714) 632-8333
Bob Powell -- Powell, Mika & Assoc.,  West Lake Village, CA (818) 735-0409
The certification stamps appear to be APA labels. There is also a plant no. on the label that you can provide to APA and they can contact the manufacturer. It is possible that the manufacturer can be of help. During my twenty five years working in the glulam industry, I found the manufacturer's to be very helpful and responsible.
All the stamps visible on the "top" indicate that these are stock beams. They were probably purchased from a local distributor and that's why they are at the jobsite early. 
Bruce Pooley
----- Original Message -----
Sent: Friday, March 25, 2005 3:22 PM
Subject: Glu Lam Beams Exposed to the Weather

I?ve got a project consisting of three masonry buildings with a wood roof. A couple of weeks ago, I was at the site performing a structural observation. It was the last grout pour of the project. While there, I observed that, for some reason, the Glu-Lam beams had already been delivered. Some of them were unwrapped and, for those who have been keeping up with the weather, we?ve had quite a bit of rain here in SoCal. Here?s a picture of what I saw: I can?t tell you how long the material has been on the job site, since the project superintendent is essentially non-existent (another story for another time). I know that these beams were not specified for outside exposure. I am worried that either the beams have become distressed or, at minimum, should be inspected. Maybe some of you wood gurus can tell me that ?it?s no big deal?, but I would prefer a reference to someone or some firm who can perform an inspection. The project is located in Ontario, California.


Thanks in advance,


T. William (Bill) Allen, S.E. (CA #2607)


Consulting Structural Engineers

V (949) 248-8588


F (949) 209-2509



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