Thickness vs. PSI in Concrete
August 20, 2012 6:52 AM Subscribe
I am in the process of replacing my almost 20 year old asphalt driveway with concrete and am looking for some advice on what I should be looking out for when picking a contractor. One guy quoted me $5.75/sq. ft for a 4.25" thick driveway, rated at 6500PSI. Another guy quoted me $6/sq. ft for a 6" thick driveway at 4500PSI. Both will be reinforced with steel rebar and I am doing just under 900 sq. ft. This will be completed in the Twin Cities, MN metro area so it will have to withstand the harsh winters the years we do have them.