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Pavilion Plans - Beam Size Question
Posted on 3/3/21 at 3:39 pm
Posted on 3/3/21 at 3:39 pm
I'm looking at building a small pavilion next to my (currently under construction) pool. The excess concrete I'm having poured will allow for 12'x14'. I see tons of pictures and I can reverse engineer most of it. The construction is fairly basic. My biggest question is the dimensions of the beams required.
I've determined that the fatter the posts, the better it looks. (rocket science I know)
But as far as the dimensions required to span the 12' and 14' lengths. Is there a decent calculator online I can use to figure it out?
If anyone has some solid plans they've seen, I'm all ears. The online stuff is sketchy at best.
Something along the lines of this.
I've determined that the fatter the posts, the better it looks. (rocket science I know)
But as far as the dimensions required to span the 12' and 14' lengths. Is there a decent calculator online I can use to figure it out?
If anyone has some solid plans they've seen, I'm all ears. The online stuff is sketchy at best.
Something along the lines of this.
7
Posted on 3/3/21 at 3:42 pm to RaginCajunz
quote:bro thats why we go to school to be enigneers.... do you think we would allow it to be that simple that an online calculator can do it?
But as far as the dimensions required to span the 12' and 14' lengths. Is there a decent calculator online I can use to figure it out?
BTW, there are probably span tables for wood somewhere. and most of those free standing structures are so over build for aesthetic proposes as you noted.
This post was edited on 3/3/21 at 3:43 pm
Posted on 3/3/21 at 3:46 pm to RaginCajunz
What type of roof materials? Is it gabled, hitched or flat?
Posted on 3/3/21 at 4:09 pm to Zappas Stache
quote:
What type of roof materials? Is it gabled, hitched or flat?
Gabled. Open ends like that picture.
The roof, I'm likely going to do shingles to match the house (and shed and office)
I'd like a more modern flat roof that would match my shed and exterior office, but I want to put a ceiling fan in it and I don't think I can accomplish that style and have good clearance without it being comically high on the front end.
This post was edited on 3/3/21 at 4:13 pm
Posted on 3/3/21 at 4:22 pm to RaginCajunz
My plans span 30’ with a 12x12 center column and calls for a 4x10 beam.
This post was edited on 3/3/21 at 4:22 pm
Posted on 3/3/21 at 4:24 pm to RaginCajunz
I did one several years ago.
8x8 posts
4x12 beams at perimeter
4x12 ridge beam
Used 4x6s for the vertical beams more for looks than anything
I had 10’ posts but I think I cut them down to 9’ if I remember right
2x6s for the joists
The posts were 12’ on center and the deck canopy was about 12x14
8x8 posts
4x12 beams at perimeter
4x12 ridge beam
Used 4x6s for the vertical beams more for looks than anything
I had 10’ posts but I think I cut them down to 9’ if I remember right
2x6s for the joists
The posts were 12’ on center and the deck canopy was about 12x14
This post was edited on 3/3/21 at 4:25 pm
Posted on 3/3/21 at 4:25 pm to BAMBAM
Take note the natural pressure treated beams are not as strong as a laminated beam I used PT
Mine was way over built but the look I wanted.
Mine was way over built but the look I wanted.
This post was edited on 3/3/21 at 4:26 pm
Posted on 3/3/21 at 4:25 pm to RaginCajunz
The beam in the Pic looks like an 8" and I can't tell if it is a full 8x6, the 6 to match the 6x6 posts, or if it's 3 8x2s sandwiched together. Either way, the beam shown is way bigger than necessary but is done for aesthetics. . You can get away with just a single 2x10 at a 14' span but you probably want the beam to be the same thickness as the posts.
This post was edited on 3/3/21 at 6:32 pm
Posted on 3/3/21 at 6:36 pm to RaginCajunz
quote:
Pavilion Plans - Beam Size Question
Go to Forestry Forum website. Join and there is a red toolbox icon on bottom left with all kinds of useful tools.
https://forestryforum.com/
Then go to the Timber Framing/Log Construction forum
poster DonP is your guy for this. Lots of really knowledgeable guys on that site.
Posted on 3/3/21 at 6:48 pm to RaginCajunz
Span tables aren’t going to tell you much here because the 2 beams at the base of each gable are carrying the entire load of the ridge. That said, that’s a very small structure and not a whole helluva lot of weight— unless you’re putting a slate roof or something on this thing. A 4x6 would likely be plenty enough, but it sounds like you want something beefier for aesthetics...
Posted on 3/3/21 at 7:07 pm to GeauxldMember
I’m mostly concerned with the beefiness of the corner posts. I dont necessarily want it to look off, but I mostly want adequate beams to span the lengths. I got a rough estimate on cypress today but I was just guessing based off some online plans. It was basically 6x6s on nearly everything and 2x6 rafters.
This post was edited on 3/3/21 at 7:09 pm
Posted on 3/3/21 at 8:02 pm to RaginCajunz
That would be more than sufficient. I personally would opt for cedar over cypress— unless you have a source for some old growth stock...
Posted on 3/4/21 at 8:35 am to RaginCajunz
just make sure when you pour that concrete that you beef up with some footings under where you columns will be. Otherwise you'll crack and settle like a mfer
Posted on 3/4/21 at 10:38 am to modes
quote:
just make sure when you pour that concrete that you beef up with some footings under where you columns will be. Otherwise you'll crack and settle like a mfer
Yes, certainly. I planned on having them dig a nice footing for the columns. I wasn't sure if I should insist on a deeper perimeter footing as well. Columns for sure.
I'm also debating having them sink anchors in the corner to accommodate post bases like this.
Posted on 3/4/21 at 10:40 am to GeauxldMember
quote:
Span tables aren’t going to tell you much here because the 2 beams at the base of each gable are carrying the entire load of the ridge.
do you know how span tables work?Posted on 3/4/21 at 10:42 am to RaginCajunz
quote:thats called a grade beam for a wall or something that would be putting a load along the edges. They can also be used to prevent any scour or major settlement which could reveal the base of the slab.
Yes, certainly. I planned on having them dig a nice footing for the columns. I wasn't sure if I should insist on a deeper perimeter footing as well. Columns for sure.
Posted on 3/4/21 at 10:50 am to CarRamrod
quote:
CarRamrod
Posted on 3/4/21 at 2:25 pm to CarRamrod
quote:
do you know how span tables work?
I’ve always associated span tables with rafters, floor and ceiling joists, and load tables with beam/header/sill selection. Maybe I’m wrong.
Posted on 3/4/21 at 3:06 pm to GeauxldMember
quote:
That would be more than sufficient. I personally would opt for cedar over cypress— unless you have a source for some old growth stock...
I'm looking to see if the lumberyard can source cedar and price it. I do like cedar and love cutting it.
I found a picture of some other examples. It looks like they are using 8x8 for the column posts and I'm guessing 4x8s on the beams. The posts being trimmed to what I'd consider a tenon (not sure if that is the right term for it in this application)
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