Shed Foundation - Concrete Type

Tim,
I would never dream of trying to mix that much by hand. You will tire out before it is all poured. I would never, ever purchase concrete mix from from a box store. That crap has been laying on the ground or sitting outside getting all kinds of moisture. And you never know the age of the mix. And you may run shy, which is never a good idea. Order it to be delivered. Order 2 cubic yards if you are that close. There will be some that spills, some that does not come off of the truck, and some that just not look good and you shovel it out. Always better to have a little too much.


I would lay down a good layer of compacted gravel, depending on what you plan to set on the pad as far as weight, I would go as deep as 6 inches if you are parking a vehicle. And then a good 4 inches of concrete. I would not fore go the rebar for any concrete pour. I use it always. I also only use fiberglass rebar. Never any rust with fiberglass. Rust will cause the concrete to crack. Fiberglass is very stable. You can use 4x4 square lathe. I cannot think of the exact name at the moment, but it looks like fence wire. The sub under the concrete is the most important part. Do that well and correct, over kill is always better in this situation.


I poured my workshop of 30x60 feet using 6 inches of concrete fiberglass rebar and 8 inches of gravel and gravel dust. I ordered re-enforced concrete from the mixer, they added horse hair and fiberglass feathers. I had a large dump truck filled with dirt roll over it, and nothing happened other than it got dirty. I had a company come in a polish the floor once I completed the building.

Concrete is one of things that you can never go back and touch up, or repair. You must start all over when there is an issue. Always better to do this right the first time.