Shed Foundation?

[summit151]

Hey guys. I am currently planning to build a large shed. I am thinking maybe a 12x 24. I plan on storing a few quads and snowmobile and general storage. My questions are what size would you guys recommend? What type of foundation should it be on? I live in Alberta Canada so frost heaves do happen. Any body have any pictures of there large sheds ? I don't want to have any regrets once it is build so I am trying to plan it out good

Thanks

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[bczygan]

Concrete!!!

 

[Moosefire66]

I used the concrete risers sold at the big box stores for mine. My shed is a 12x24 as well, it's only 2 years old but it's holding up great so far. I spaced mine every 4 feet, both on the perimeter and under the shed as well. Make sure you level them up really well and everything else will be fine

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[matt_i]

I think that sinking some treated posts below the frost line would be worth the peace of mind. You probably should plan for about 30 years longevity with this system.

 

[Kaizen]

for a shed I prefer wood foundation. high and dry. Get it up off the ground a foot. mine is on leveled concrete blocks and just goes up and down with the frost. But mine is only 12 feet long. at 24 i'd be worried about sections moving at different rates causing issues so the posts might be better. Also would be easy to make the floor level.
hope you're making a drive through door for the toys. soooo much nicer in the winter. Also see if you can section off that area so you can heat it when they break in winter

 

[Moosefire66]

I know these are going to be large pics, I apologize in advance. Here's my 12x24 on the pillars as described earlier. Don't mind the paint...

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[CJ7VFR]

Where I live in Central New Jersey, you have to either put a shed on a concrete foundation, or make a foundation framework out of pressure treated 6X6's and fill that to the top surface of the wood with crushed stone to get at least 5 inches deep worth of stone there.

Apparently, at least around here, "critters" have a habit of digging under sheds and other out buildings, and the concrete and stone are supposed to help stop that. Now, does it actually stop it? I don't know. But that is the code in my town at least.

Jim

 

[captain14]

I Built mine like Moosefire66 above did except I installed 2x12s front to back and then built the shed platform floor on top of that. My father built his the same way.

No issues for 25 years. Keeps the T1-11 siding away from the ground so it stays nice and dry.

 

[summit151]

Hey guys thanks for the replys. I would love a concrete pad for the shed. But at that price your building a garage. I have talked with a few contractors around here and they mentioned that the 6x6 box filled with gravel works well or put the shed on 6x6 skids underneath it. I like the gravel idea but there is not alot of room to get a skid steer or equipment in behind my house. And I don't want the shed being a foot of the ground

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[bad_idea]

My shed is 8x16. I like the size as it is solely for storage. I set concrete blocks on a 2' grid, (4) 4x4x16' skids, and 2x4s on 12" centers for floor joists. The concrete blocks are even with grade on the low side, and the lumber stacks up to 7.75" (including the plywood for the floor). Due to the spacing, load capacity is high. The floor is solid, no bounce or sag. I built the shed 4 years ago.

 

[p_mori7]

screw-in pilings.
About $200 each installed.
You would probably need 12 to properly support your building.

Alternatively, prep a good 0~3/4" gravel bed at least 12" - 24" in depth, properly compacted. 3' wider all around than intended building. Put up a pole-barn style building. Then do the concrete inside at a later date when budget permits.