Wooden shed on cement slab but raised up for drainage


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Old 09-29-15, 06:23 AM
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Wooden shed on cement slab but raised up for drainage

Hello forum

New member here and asking a question...hope its the appropriate venue

I have an old slab in the back yard from years ago. It had a shed on it at one time but long gone. I want to build another shed (wood) and secure it to the slab, HOWEVER the slab over the years is in a bit of a low point in the yard. I want to float a floor but about 6 to 8 inches above the slab. Looking for suggestions on best way to do that so it water collects there is will sit below the floor and drain out as opposed to sitting on the shed floor.

I was thinking of placing large bolts into the cement slab, placing cinder blocks over them, filling the voids in the cinder blocks with cement and thus having a raised base along with blots I can now use to secure the floor to?

I am in NO way knowledgeable in this stuff...I usually make stuff up as I go along..I am very handy...just not experienced in this stuff at all...so asking first this time

Thanks!

PS Slab is 10x10 and shed will be 8x8 or 8x6 probably
 
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Old 09-29-15, 06:40 AM
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Raising the shed is a good idea. I don't think that I would build a shed for a few reasons. Some municipalities consider it a structure as opposed to a shed bought from Home Depot. It's easier to assemble a prefab shed.

Do you really need to raise it the height of a cement block? Will that require steps?
 
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Old 09-29-15, 07:10 AM
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I'd build it on top of at least 3, 6 X 6's as skids.
 
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Old 09-29-15, 07:20 AM
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PS Slab is 10x10 and shed will be 8x8 or 8x6 probably
That rules out putting it directly on the slab. Rain would run under the walls. I'd say break up the slab or just use it for a "patio" in front of the shed entrance. If you built an elevated smaller shed on top the remaining concrete around the sides would look awkward at best.
 
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Old 09-29-15, 08:27 AM
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Thanks for all the quick info

Not really sure how high it needs to be...prob just 2 or 3 inches above the slab to avoid pooling when crazy heavy rain comes in....not too often but it is S Fla after all

Its kind of a limited space so I cant use the slab as patio, that's a great idea but unfortunately I am limited to one corner of the yard. If I put those Skids down can they sit directly on the cement and how do I secure them down?
 
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Old 09-29-15, 10:45 AM
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Any reason not to make the shed match the size of the slab?
You can screw brackets to the 6x6s and then use tapcons to secure the other end to the slab.
almost forgot - welcome to the forums!
 
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Old 09-29-15, 11:41 AM
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Wood skids can eventually rot, especially in Florida, even if treated. I'd build a base of treated joists (2x6 or 2x8) spaced 16" on center supported by 4"thick 8"x16" concrete cap stones. Use " treated plywood for the floor.
 
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Old 10-09-15, 03:50 PM
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Yes..cool

I saw those cement cap stones...

They seem an easy solution to the raising it up a bit issue

I want to keep it a tad smaller than the slab as I the original slab is a bit too close to the property line / fence I remember it years ago when the original shed was up and there was about 10 inches from the wall to the fence

Thanks!

This forum is awesome
 
 

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