Originally Posted By Dave's White Rock '68 Droptop
That's compressibility. By thickening to say 6" and adequate reinforcing mat in the immediate area one can avoid any cracking that may develope if there is any subbase settlement. Cheap insurance for an extra scrape of the bucket and a few extra I0M bars.
yup, I know its cheap, but not really necessary in your area I would think??..I do tivcken slabs to 6" and dbl up the bars here in Houston on residences sometimes, mainly because of the very much "gumbo" soil we have....lots of clays , shrinking and expanding takes a toll on concrete...it doesnt bend easily...lol and after 25-30 yrs slabs often have had it!