160 cubic inches / (1/8 inches) = 160*8 = 1280 sq inches
1 sq. feet = 144 sq. inchesSo,392 sq. feet = 144 * 392 sq inches = 56448 sq. inchesVolume of cement needed = 56448 sq inches * 4 inch = 225792 cubic inches225792 cubic inches = 1568 cubic feet
It would take 676 cubic feet of cement for a patio of that size.
13 1/3 cubic yards
25 feet is equal to 300 inches. The radius of a hole is half its diameter, which equals 4 inches. The volume of the cylinder is given by the formula v = [Pi]r2h, so the volume of your hole is 3.14 * 16 * 300 = 15080 cubic inches. There are 1728 cubic inches to the cubic foot, so you'll need about 8.75 cubic feet of concrete, which is about a third of a yard. (More exactly, that's a cubic yard, but concrete guys just say "yard.")
0.3 cubic meter cement mortar consumes.
How much cement sand and stone do you need for 1 cubic meter of concre
If you mean 12 feet long by 8 inches wide by 4 inches deep, you will need at least 0.1 cubic yards
28 feet by 32 feet by 6 inches thick requires at least 16.59 Cubic Yards.
Concrete is a mixture of cement , sand, gravel and water. A cubic yard of concrete is 3' x 3' x 3' . That's 3x3=9x3=27 . 27 cubic feet = 1 cubic yard . So it's 27 feet divided by 3 inches equals 108 sq ft!
Cement content varies on concrete type, but is typically 400kg per cubic metre. According to the manufacturer, Portland Cement (which is what 99.9% of all cement actually is) has a density of 1505kg/cubic meter.
Convert the 4 inches into feet first. 4/12 = .33 feet. Now, compute the volume by multiplying the area of 64 square feet by .33 feet, and you get 21.12 cubic feet. Sometimes cement is ordered by the yard (cubic yard) and since there are 27 cubic feet in one cubic yard, you would divide 21.12 by 27 and get .78 yards.