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re:glu-lam shrinkage[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: <seaint(--nospam--at)seaint.org>
- Subject: re:glu-lam shrinkage
- From: "Peder Golberg" <Peder(--nospam--at)jgpierson.com>
- Date: Mon, 20 Aug 2007 08:15:03 -0700
I never worried about manufactured wood and shrinkage until recently. I was just called out to look at a 3 year old project that had issues with the glu-lam beams and shrinkage which caused the fire sprinkler line to leak where it penetrated a masonry wall. A very large 72” deep glu-lam beam in the gym shrank about ¾” total in depth after construction. Glu-lams will suck up moisture and grow after fabrication before or during construction (I have pictures of the beam exposed probably 3 months before the building was fully enclosed and heated) and then shrink as the moisture level reaches equilibrium. See attached link for good information.
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