footing and spacing for 8x15' shed foundation


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Old 07-22-16, 06:11 AM
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footing and spacing for 8x15' shed foundation

Plan on using the quickrete cylinders. where I live they have to be 36" or deeper. Was thinking of 8 in in diameter.
This is going to be for a foundation for one of the lifetime sheds. Wasn't sure if I needed 4 or 6 and what the optimal spacing would be.

thanks.
 
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Old 07-22-16, 07:09 AM
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Check with your local Building Inspections Dept. For one to make sure whether or not you need a permit for your work. And two, they can let you know what they want to see for foottings.

I would also check with your Zoning Dept. You may need a zoning permit to add the structure.
 
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Old 07-22-16, 02:49 PM
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And are you 100% sure a shed that narrow will even work for what your wanting to do?
No one's ever built a shed or a garage to big, most build one to small and regret it or are stuck having to build another one or add on.
 
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Old 07-23-16, 03:26 PM
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Actually, this is a second shed lol. Have a 12 x 18 that was already here. Was actually considering something smaller bc this was mostly for pool stuff, but wanted: a low maintenance jobby, >120sf and dual entry. This is what I was able to find.

Thx
 
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Old 07-23-16, 03:51 PM
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I can't imagine a shed of that size with a wood floor needing less than six support posts.

I built a 8x12 shed on my first property, out grew it before it was finished, tore it down and built a 12x20 then added on to it twice ..... sheds are never big enough
 
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Old 07-23-16, 04:20 PM
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In my little mind I was thinking making The floor similar to a deck: 2 double beams length wise on the tubes, then joists every 16in, then the plywood flooring to place the shed on.
... Or I could be WAY off and it won't work!
 
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Old 07-24-16, 03:40 AM
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15' is a pretty long span not to have support in the middle but it might be ok if the 2xs are big enough. IMO it would be easier/cheaper to add a post in the middle.
 
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Old 07-24-16, 05:04 AM
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Thanks, that's one of the reasons for the post, whether to use 4 or 6 concrete footings. If I'm off on my thinking, feel free to let me know. after all, I wouldn't of posted of I knew all the answers.
 
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Old 07-24-16, 05:07 AM
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I'd install 6 footers/posts but I'm just a painter, hopefully one of the carpenters will chime in later with better info for you.
 
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Old 08-05-16, 06:50 AM
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I contacted the city. The shed isnt big enough to require a permit. they were able to tell me that the tubes should be >36in into the ground (4ft recommended). They instructed me to contact the manufacturer of the shed for tube diameter and locations. The manufacturer say they are only used to installing on either concrete slab, of on flat ground with solid blocks as base, so they couldn't tell me on location and size. This is going great LOL
 
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Old 08-05-16, 07:14 AM
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What did they say about block spacing? Unless they mean a continuous block foundation the spacing would be the same.

Locally no permit is required for any shed under 100 sq ft but if it has a permanent foundation then a permit/inspection is required. Sounds like your permit office is more lenient and ours is more lenient than most
 
 

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