Seven alumni from the University of Arizona's mining and geological engineering program competed in the alumni division, coming in second place. The competition commemorates the 91 miners who died in the 1972 Sunshine mine disaster and continues to honor all miners who have lost their lives while on the job.
Place concrete at a minimum thickness of 4 inches. Increasing the thickness from 4 inches to 5 inches will add approximately 20% to your concrete cost, but will also boost your driveway's load-carrying capacity nearly 50% , according to the Tennessee Concrete Association.lace concrete at a minimum thickness of 4 inches. Increasing the thickness from 4 inches to 5 inches will add approximately 20% to your concrete cost, but will also boost your driveway's load-carrying capacity nearly 50% , according to the Tennessee Concrete Association.
Multiplied by the cost of concrete, youâre total concrete driveway cost will be $3,500-$5,600. If you are interested in knowing how much concrete you will use, hereâs how to do that. One yard of concrete will cover 81 square feet of ground 4 inches deep.It will require 1.5 yards of concrete to cover the same area to 6 inches deep. Depending on conditions in your area, your driveway contractor will suggest using at least 4 inches, and 6 inches is more common.ne yard of concrete will cover 81 square feet of ground 4 inches deep. It will require 1.5 yards of concrete to cover the same area to 6 inches deep. Depending on conditions in your area, your driveway contractor will suggest using at least 4 inches, and 6 inches is more common.