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dcd22 07-18-2007 08:42 AM

Paralam support question....
We put a 2 story addition on our house that is 18x18. The floor joist's for the upstair's are 2x10's hung off a 14" paralam (to get max ceiling hight in the downstair's) that is 18' long.

What should be under each end to support the 14" x 18' paralam and 2nd floor?

PS - The 2nd floor is just a bedroom.

Ron6519 07-18-2007 09:35 AM

Whatever the Architect specified. Could be concrete filled 4" metal support poles, a series of 2x4's, etc...
Since it seems it's done, what's under it now?

dcd22 07-18-2007 10:04 AM

It is 2 2x4's sistered together. I did not have architect plans drawn, my builder and myself drew them, and they were approved and inspected by the town. I assumed all was OK, but when I sit under it I sometimes wonder!

Ron6519 07-18-2007 02:53 PM

I took the first floor out when I put the kitchen addition on. I used 2- 1 3/4" x9 1/2"x 14' lvl's sandwiched around a 1/2"x 9" x14' flitch plate and bolted together along with the 14' lintel to hold up the second storey brick. I used the concrete filled metal poles.
I designed the addition and had a draftsman make up the blueprints. He worked with an architect who over saw the structural considerations and signed off on it. Cost me $700. vs. the $4500. an architect wanted to do the same thing.

crecore 07-19-2007 06:41 AM

shoot from the hip engineering, I was guessing 3 2x4's nailed together under each end before I read your later post. They are extremely strong in compression but two are more likely to bow and thus settle than three. Also, and just as importantly, is the bearing area calculation based on the load. 3 2x6's in compression was signed off on a plan I did myself supporting a 2nd floor lined up with load bearing walls of roof loads supporting three 2x12x32 foot lvl's with a span of about 16' (3 posts).

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