Gluelam beam span ?'s

Old 10-26-04, 02:04 PM
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Gluelam beam span ?'s

I have installed a 28' gluelam (5 1/8" x 12 1/2") for my cathedral roof. The span is 23' 6" with a 2' overhang on either sides out side. I am thinking that it needs a center support post; which I am trying to avoid. Do I really need one???

Here are the relevant facts:

I live in a siesmic area with alot of snow. South Central Alaska
THere are no codes in my area for this cabin
cabin is a single room with loft 16' x 24'
9 piers support subfloor (11 3/4 BCI joists)
Walls are 10' 6" tall - 2x6 on 16" centers
the house is sheathed w/ 1/2" OSB
Catherdral ceiling is 2x10" rafters on 24" centers
the roof pitch is slightly more a 10/12 pitch and should easily shed snow

What is the verdict? THanks
Old 10-28-04, 10:37 PM
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Do you already have it in place?
Did you see the posting titled:
What I learned from a structural engineer.

I've got a couple of double 1-3/4 x 14 lvls to span 32 feet. You can see the temporary posts and beams in place next to where the lvls. I plan to have a posts at the end and one at 16. An architect-friend, who came over and help figure out a plan, said that I would be fine, but based on chfite's post, I would say it's worth it to have someone take a look.

I have a lumber yard near me that has structural engineers as part of the staff, you might try your local lumber yard. Maybe based on the detailed information you have, they can advise without coming out to the site.

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