bradjacob

I'm building a shed that is 12'x16'. The ground underneath slopes about 2' over the 16' length. I've dug 6 holes for the piers. The two front piers are 12" Sonotubes that will be flush with the ground and have then beam connector cemented in. The other 4 holes are 16" - and will hold 6x6 square pressure-treated posts that will sit on on 1' of concrete (in the hole) and be surrounded with compacted pea gravel. The posts will hold a 6" beam that will be made up of (4) 2x10's. The beam span will be 10 so the joists will over hand one-foot. The post-span will be 7' along the beam. The joists will be 2x8 and span 10 (because of the beam span). Walls will 8' high and the roof will be a gambrell barn style. Before I start framing, I just wanted some opinions. are the beams beefy enough? The spans all ok? Are the 6x6 posts enough to hold the weight, etc, etc... Any info would be greatly appreciated.

Thanks.

WilsonRMDL

Unless your filling it with steel or bricks I think your ok with that setup.

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bradjacob

Na... Just normal "shed" crap!

shanekw1

Quad 2x10 beam with 7' spans... you could land helicopters on that...
2x8 joists on 10' span is ok by my code book

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bradjacob

Thanks guys for the info. And those 6x6 PT posts sitting on 1' concrete footings will be sufficient as well?

thom

The posts are overkill. 4X4 would be more than adequate. The piers are questionable, not because they seem inadequate but because no one here knows the soil conditions. If you are building on decomposed granite the piers are overkill, if you're building in a mud-bottomed swamp they probably won't do.

bradjacob

Eastern PA. The soil is FULL of rocks and hard clay and "regular" dirt. The house development was built on an old corn field.

DecksEtc

What are your local building codes regarding frost line? I would hazard a guess that it's lower than 12" - probably somewhere in between 36"-48".

That would be the only problem I see with your design.

The quad 2x10's is a little excessive - 3 would be plenty.

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shanekw1

Around here 4x4 are not accepted for anything other than fences and railings, anything structural requires 6x6 posts, at least thats what my inspectors are telling me. Also any accesory building under 600 SF does not require frost protected footings, that shed could be built on 16"x16"x2" reinforced pads set on the ground and cribbed up to elevation.

Having said that I would still use big foot footings and sono tubes poured to elevation in all the holes, eliminate the 6x6 all together. I like things built like a brick sh*t house.

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PA woodbutcher

I think we talked this shed in another thread. What do they want to spend on the damn thing. It's a shed.

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