Concrete slab for shed on uneven ground

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Old 09-09-19, 10:25 PM
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Concrete slab for shed on uneven ground

Hello - I'm putting together a 4x4x6 Rubbermaid shed. I'm thinking of a concrete base to which I can anchor the shed using bolts (hurricane prone area). But the ground is sloping, please see the attached pic.
1. Given the slope in the ground, how do I go about setting the batter boards? That is, using 2x10 may expose a gap in the lower end when leveled, right? Should I cover that gap with something to prevent gravel/concrete from flowing out?
2. Should the concrete base itself be anchored to the ground in some way? Also, can I just use Quikrete for the concrete?

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Thanks!
 
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Old 09-10-19, 02:50 AM
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Welcome to the forums!

First you want to remove the sod along with any high spots. You want the bottom portion of the perimeter of the slab to be below grade. 3.5" is thick enough for the concrete although it may need to be thicker at the low end to make it work right. Bag concrete is fine.
 
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Old 09-10-19, 04:29 AM
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First check with your local zoning and building inspections departments. Sheds often have setback requirements from property lines. This is often made worse when installing a concrete base as zoning now considers it a permenant structure and it can fall under more restrictions. The space you marked is pretty tight so you very might run into setback issues.
 
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Old 09-14-19, 08:16 AM
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Thank you Pilot Dane and marksr for your responses! I checked the zoning rules and yes the above marked area is utility easement and can't build there. Please see below for the revised location - marked in red arrow (sorry the pic doesn't show the complete view), this is close to the house foundation/wall though. Do you foresee any issues with this placement?
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Old 09-14-19, 09:49 AM
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The biggest issue with building a shed next to the house is the gap in between the 2 creates a great place for trash/leaves to collect.
 
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Old 09-14-19, 10:09 AM
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When you set your frame you will want a little slope to force any water to drain away.

We can't see above that area but if there is any run off from the roof above that will hit that shed it will splash against what ever part of the house is there. Rain will still splash and water off of the shed roof needs to be considered.

Being that close to the house I doubt you will have a frost issue, unless you are in really cold country.

Bud
 
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Old Yesterday, 09:23 AM
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I would make the base out of pressure treated 2X6 or 2X8 then use shed anchors to hold it down re: hurricane area.

Then if it causes any problems it will be a lot easier to move.

Also you will want the shed roof to slope away from the house if possible.

The gap between the house and the shed will not only collect debris but also moisture so depending where you are located moss/slime etc. could start growing there.
 
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