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    ROYEIL's Avatar
    ROYEIL Posts: 1, Reputation: 1
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    #1

    Oct 25, 2010, 07:01 AM
    Outdoor Storage Shed foundation.
    I am building an outdoor storage shed 9ft X 12ft. I plan to use concrete peirs that are 8"-10" in diameter for the sheds foundation.
    I have been able to dig holes for the 9 peirs but can only go about 2 feet deep easily. I would like to go deeper but it would take a lot of additional effort. What is the recommended diameter and depth for this size and type of building?
    smoothy's Avatar
    smoothy Posts: 25,490, Reputation: 2853
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    #2

    Oct 25, 2010, 07:18 AM

    Depends on where you live... the depth will vary because you want that below the frost line as soil above that heaves when it frezes and thus isn't stable. If its because you are in eastern Texas and are on the bedrock that is so close the surface.. then you would be good... I assume that's the problem you have at 2 feet depth.
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #3

    Oct 25, 2010, 01:40 PM
    8-10" piers seem a bit overkill for a 9X12. If you are not in a tornado area and in a temperate climate, GA, FL, etc. just lay 3 PT 4X4/12 on the ground, build your floor frame and use mobile home tiedowns to anchor the 4X4. HD and Lowe's do it all the time in the Atlanta Area. My building is 10X12, in the GA Mtns and has survived for 10 years built like this. However, depending on where you live you may have a code or heave issue.
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #4

    Oct 26, 2010, 05:04 PM

    Check the building code for your area. Some codes call for piers and will specify what you need. Other codes like mine and ma0641 call for very little. I have a 10x10 shed that sits on PT 4x4 for nicely for 20 years even through our tornado like past summer.
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #5

    Oct 26, 2010, 07:11 PM
    Comment on ballengerb1's post
    Is that the tornado you sent to Atlanta last year?
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
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    #6

    Oct 26, 2010, 07:12 PM

    Yea, and we are brewing another one tonight and again tomorrow. Chicago is windy but that's not how it got its name.
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