Slab Question for the Forum

[FltEngCPO]

I'm getting ready to get this off the ground finally! I had some dirt brought in and I have a levee site for my 30' x 40' shop. I have to do footers for code and was planning to do stems walls with my slab. The concrete guy that came to bid the job today suggested that I do a Monolithic slab. From a little looking around and reading posts, I think it would be okay for what I need.

My question is based on my sloped yard and having to bring dirt in to get the site level (which is due to the drainage issues I have in the back yard).

I took these two pictures from the patio so it is looking at an angle from the right side of the yard. The yard is 5 feet higher at the right side property line on the right and the water run-off pattern is towards and in front of the shop site (I plan to re-grade the whole back yard when I am ready to finish grade from this project). I live in Oklahoma City and don't think there will be any freeze issues????

Thanks for any and all input from the forum.

Thanks

 

[ConCretin]

Assuming that all the organic materials was removed prior to the fill and that the fill is well compacted, a monolithic slab is a good option.

You are looking for a 8" to 12" haunch around the perimeter with a couple reinforcing bars in the bottom. WWF is fine for a floating slab but I like rebar in a monolithic pour because the slab will be subjected to any stresses generated by the structure settling or twisting.

I like to run a 24" high form around the perimeter. I place the slab against the bottom than stand a short form on top of the slab and add a curb to get the garage framing up off the ground.

I hava a 28 x 32 I placed for myself a few years back. It has been bouncing around on 4' of frost every winter without a crack.