footers
The depth is determined by the frost depth in a particular area. In your case the safe depth must be 32". As far as size of your footer the rule of thumb is for width it should be twice as wide as the thickness of the foundation wall and the depth should be the same as the wall. so if you have a 8" wall it would be 8" thick this would be the minimum.( a little thicker wont hurt) Also you should run two rows of 1/2 "rebar.Some area's will let you use fiber instead of rebar. But confirm this with code. Jay is right if you can get the truck around the footer you can pour right from the truck. If not you can wheel barrel it or rent a mud buggy. With no step's it will be around three yards figuring it with the numbers i have. If you pour it at a 5 slump it will flow pretty well and you wouldn't need to vibrate it down on the footer. If you are doing a concrete foundation then you will need to vibrate. You can always check with code inforcement in your area for any questions you may have. Or reach out to a local contractor for some info. Most will help you out with some question you might have. Ask around at the local lumber yard for a good one. Hope this helps good luck with you garage
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