[Dargo]

I've had over 700 yards of concrete poured at my place in the last couple of years and will have another 96 yards poured this Friday. I don't have any concrete where a vehicle will drive on it that is less than 6". All of my parking areas and driveway is 6" 5000 psi concrete with 4 gauge wire (the wire is about 1/4" thick and comes in sheets - you can't roll that stuff). I use rebar between joints and on edges. There I used grade 60 #5 rebar. In my barns the thickness varies between 8" to 10" depending on what is going to be placed in each barn. Around my pool and my porch I used 2X6 forms, so that concrete is about 5" thick or so. That concrete will only have foot traffic.

My theory on concrete is that I only want to do it once. Long ago I tried to go with concrete as thin as I could and only used the standard 3500 psi concrete. With some heavy equipment, I got to rip all that stuff out and do it again. It's far less expensive and easier to do it right the first time. Inside my newest barn we just parked a pumper truck inside with a boom arm. That way each concrete truck just drove up to the back of the pumper truck and unloaded into it and the boom arm reached where we needed the concrete poured. I can't recall, but I think the concrete trucks need at least a 16' door to be able to drive through; or maybe that was what was needed for the pumper truck. Either way, it sure made it easier to get the concrete where it was needed!