Posted 8/27/2015 18:58 (#4756516 - in reply to #4756462) Subject: RE: There starting to call me patch's at the concrete place
south central WI
We have acres of concrete formed 3.5" thick, settled to 4" and on bare dirt. Never had an issue with it until we went to 26' chopper boxes and 9500 gallon tanks. Now we pour 7+" with a foot of gravel under it. Cow yards and bunker floors that don't see that traffic are holding up good at close to 20 yrs old.