80x14x5=17.26 cu.yards. A one cu. yard of concrete would require six bags of cement, 0.44 cu. yards of sand and 0.88 cu.yards of gravel for a class A mixture. So 17. twenty six cu. yards of concrete requires 102 bags of cement, 7.5 cu.yards of sand and fifteen cu.yards of gravel.
40 sq feet
if you are using 2×6 ‘s for your forms better order twenty yds. 3500 lb. mix with fiber and air added …thats what i would use…
You have 459.2 cubic feet. Divide that by 27, and you get seventeen cubic yards of concrete.
Denver Decorative Concrete & Custom Masonry
17.28 yards
I would round up and order 17.5 or eighteen yards.
http://www.concretenetwork.com/concrete/howmuch/calculator.htm
4 deep is standard, why pay more.
80x14x5=17.26 cu.yards. A one cu. yard of concrete would require six bags of cement, 0.44 cu. yards of sand and 0.88 cu.yards of gravel for a class A mixture. So 17. twenty six cu. yards of concrete requires 102 bags of cement, 7.5 cu.yards of sand and fifteen cu.yards of gravel.
40 sq feet
if you are using 2×6 ‘s for your forms better order twenty yds. 3500 lb. mix with fiber and air added …thats what i would use…
You have 459.2 cubic feet. Divide that by 27, and you get seventeen cubic yards of concrete.