Where can I find good information on Reinforced Slab on Grade?

Considering that reinforced slabs on grade are a standard for most residential buildings that is taught in college, I would try any college text book on reinforced concrete design. Look up 2-way slab and 1-way slab.

go through soil or foundation design specially subgrade reaction chapters

Toomuchfun

says that there are too many unknowns to help with you with an answer to your question. Just like any other methods of construction, one must know the loads, expansion and contraction, blend of materials, and the compaction info regarding the material on which you are placing this slab.

There are five things that you must know before "messin around" with concrete. 1. it will not get hard when you want it to. 2. It will get hard before you want it to. 3. It is going to crack, so the best that you can hope for is to attempt to control where it is most likely to crack. 4 .If you don't want to see your concrete crack, go away, and let someone else place and "finnishit". 5. No matter what the whether prediction is for your area, freshly placed concrete attracts rain before it can hydrate, " like a hungry hound to a smelly garbage can."

If you don't want your cement to crack, don't add the water!

TMF

1- Please refer to section 1815 of UBC-97 there are some guidlines for slab on grade design.

2-You may check www.4shared.com where you may find some literature that can help you to solve problem.