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Started By
Message
Beam Span on Pavilion Sizing
Posted on 1/24/22 at 9:00 am
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?
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
4
Posted on 1/24/22 at 10:00 am to RaginCajunz
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.
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 on 1/24/22 at 10:07 am to BAMBAM
quote:
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.
Thanks. I am including multiple sizes on my lumber quotes. I found some larger, gable roof style, pavilion plans and they were using 4x10s. I don't want to under-engineer it, but I do have to devise a way to lift this heavy stuff as well. That was part of the appeal of maybe 2x's sandwiched. Doesn't look nearly as good though.
This post was edited on 1/24/22 at 10:08 am
Posted on 1/24/22 at 10:07 am to RaginCajunz
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.
If your just putting some framing up no roof you would be fine with that for sure.
Posted on 1/24/22 at 10:09 am to RaginCajunz
I used my uncles tractor with forks. It wasn't too bad I just screwed some 2xs to the posts and set it up there and used some wood screws to hold it in place.
You could use some scaffolding to do the same thing with and muscle it up there in stages.
You could use some scaffolding to do the same thing with and muscle it up there in stages.
Posted on 1/24/22 at 10:09 am to BAMBAM
It will have a roof. I have not decided if I want to go metal or asphalt and match the house. Metal would be a bit of a learning curve, but I like that it wouldn't drop grit bits around the pool.
Posted on 1/24/22 at 10:19 am to BAMBAM
quote:
I used my uncles tractor with forks. It wasn't too bad I just screwed some 2xs to the posts and set it up there and used some wood screws to hold it in place.
You could use some scaffolding to do the same thing with and muscle it up there in stages.
That makes sense. I also thought about renting one of these for a day.
Posted on 1/24/22 at 11:07 am to RaginCajunz
That should work but know its forks aren't that wide and make sure you have level/solid ground for it to sit on. May want to use two - one for each end.
Posted on 1/24/22 at 11:10 am to RaginCajunz
I built a 20x22 pergola a couple years ago. 8x8 posts, 6x10 beams across posts with 4x6 on top of that. Pressure treated pine (heavy, heavy)
Got everything lifted with a friend/neighbor and a hand forklift. Its work but more than doable!
Good luck friend and great design!
Got everything lifted with a friend/neighbor and a hand forklift. Its work but more than doable!
Good luck friend and great design!
Posted on 1/24/22 at 11:11 am to RaginCajunz
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 on 1/24/22 at 2:36 pm to TimeOutdoors
quote:
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.
I tend to agree, but I think I can disguise it well enough to not be a drastic thing. I will likely notch the post tops to accept the beams. The dimension of the beams will likely change the method of joinery I use.
Posted on 1/24/22 at 3:46 pm to RaginCajunz
You have a cost estimate as it's pictured?
Posted on 1/24/22 at 4:02 pm to SouthernInsanity
quote:
You have a cost estimate as it's pictured?
Not yet. I have the slab already there. I have a few bids floating out there but they're fuzzy since I need to sort out the beams before I know for sure. I have a few lumber dimension options on the quote so I can make a decision. Doing everything as shown in this photo in cypress will run me between $3k-$4k. That does not include any hardware for joinery. Then add the roofing and whatever I decide to do with electrical.
Posted on 1/24/22 at 7:54 pm to RaginCajunz
6x6 will do the job easily…. When building pier and beam homes the main sills which the floor joists sit on are 6x6 as were the homes built over a hundred years ago that are still structurally sound
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