Noticed a pole barn going in the other day, the posts (6×6) looked kinda odd. Close up, they were laminated posts, sitting directly in the soil. Only two of the posts were like that, in the front of the barn, the rest were normal SYP, I guess because with the doors in front, they carried more weight or were more stressed. The laminated ones looked sort of like OSB- I forget the proper term for them- but they were green like PT wood. Anybody seen these?
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Replies
Glu-lams?
Sounds like something made by Trus-Joist called "Parallam". The product line includes both beam & column sizes. I don't know about the others, but the TJ branch in Baltimore stocks both the treated & untreated version. The specs are online, http://www.trusjoist.com/PDFFiles/2060.pdf.
Al
I learn something new every day! Yes, it is a parallam. Interesting to see they have no problems with delaminating. Very neat!
It's SOP for Morton to laminate all thier posts/columns. They use three .06+ treated SYP 2X6s, glued and SS nailed, on the bottom 1/4.... the end that goes into the ground...then site-add non-treated 2X6s factory-laminated the same way except regular nails. The joint is made so the 2X6s overlap like a finger joint.
Makes for straighter columns, large dimension wood being what it is these days, and they claim that the treated part, being treated as 2X6 stock instead of 6X6, will withstand rot better.
I used the same technique for the posts of a short retaining wall and supports under a beam holding up a wood floor. Just cut .06 treated 2X6s to size, used PL400 and stainless steel hand nails to bang them together three at a time.