Patio Concrete Slab

Old 03-04-05, 05:23 PM
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Patio Concrete Slab

I have put down railroad ties that form a 16'x16' (inside dimensions) square. My son and I have burrowed down to solid Georgia red clay for most of the walls that are only two (2) ties high (that is 14") at most. We have taken care to level it cross-wise and to have a back to front decline so that rain water will drain off rather than pooling. We plan on putting more dirt inside and packing it down before adding sand/dirt/gravel mixture and packing it.

Our question is: What is recommended depth of concrete?

We don't plan on any heavy weights to be put on top and I am thinking that a 2" inch deep concrete pad will be enough. We are living in northeastern Georgia where winters are mild but we do have heavy rainfall in the summers.

Thanks in advance,

Last edited by RMHalsted; 03-05-05 at 05:01 AM.
Old 03-05-05, 08:28 AM
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Plan ahead, if you ever plan to put a car on it or build a garage or shed, you will need more then 2". I'd go 4" slab for a shed and 6" for a car.

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