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Beam Span on Pavilion Sizing

Posted on 1/24/22 at 9:00 am
Posted by RaginCajunz
Member since Mar 2009
5443 posts
Posted on 1/24/22 at 9:00 am
I have a 12x14' slab with anchor bolts ready to design and build a pavilion on for poolside. I finally found a design I liked, bought the plans (cheap) based on the dimensions given. I knew I'd have to make adjustments, but the size they gave was for the overall roof not the post locations as I assumed. It was designed at roughly 10'x10'.

My question is about the 4 main beams that span the posts. At a 10x10 footprint they are using 6x6 beams. I have not been able to figure out a clear answer with span calculators or other similar plans.

1- I plan on beefing the posts up to 8x8's. Mostly for aesthetics. I don't think that has any bearing on my question.

2- Based on a few other larger pavilions, I THINK I can get away with 4x10s for the beams. I also see designs using beams made up of laminating 2x12s or 2x10s.

Anyone with knowledge about this sort of thing?



This post was edited on 1/24/22 at 9:03 am
Posted by BAMBAM
Biloxi, MS
Member since Mar 2008
2365 posts
Posted on 1/24/22 at 10:00 am to
I would think you would be fine.

I used 4x12's on mine which was about 15x15 or 16x16 - its been about 8 yrs and I sold that house 3 years ago. 6x6 would probably bow. I am assuming your using pine. A lot of these are designed up north where they have access to harder woods.
Posted by BAMBAM
Biloxi, MS
Member since Mar 2008
2365 posts
Posted on 1/24/22 at 10:07 am to
Are you putting a roof on it or just what was pictured?

If your just putting some framing up no roof you would be fine with that for sure.
Posted by TimeOutdoors
AK
Member since Sep 2014
12129 posts
Posted on 1/24/22 at 11:11 am to
I will just say that using the same size (width) post/beams does make things more aesthetic in my opinion. Never liked 6" beams sitting on top of 8" posts.
Posted by SouthernInsanity
Shadows of Death Valley
Member since Nov 2012
18818 posts
Posted on 1/24/22 at 3:46 pm to
You have a cost estimate as it's pictured?
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