You need to specify the slab's width and the length as well.
11.852 cubic yards
How deep? Are you talking about dry mix weight or finished weight? Concrete weighs 150 pounds per cubic foot. So if you have a 6" slab, that's 150# for 2 square feet. For a 4" slab, the same amount will cover 3 square feet. For a 3" slab, 4 square feet. Concrete mix is commonly sold in 80 pound bags. The finished weight is the mix plus the water that gets chemically bound to it. There's a guide on the bag telling how many bags you need for a given area and thickness.
Well, darling, if you want a concrete slab that's 5 inches thick, you'll need about 0.012 cubic meters of cement and 0.06 cubic meters of sand per square meter. Just make sure you mix it well and pour it like a boss. Good luck with your project, sugar!
4.074 cubic yards for every foot the slab is thick.
129
18 bags (80 pounds) of quikrete for a 4 inch thick slab.
3.95 cubic yards of cement are needed for a slab that size.
20
A 15' x 20' x 4" slab needs at least 3.7 cubic yards.
1.19 Cubic Yards
To calculate the number of bags of concrete needed for an 11x11 slab, first determine the volume of the slab by multiplying its length, width, and thickness (in feet). For example, if the slab is 4 inches thick, convert that to feet (4 inches = 0.33 feet) and calculate the volume: 11 ft x 11 ft x 0.33 ft = 40.13 cubic feet. Next, convert cubic feet to cubic yards (1 cubic yard = 27 cubic feet), which gives you approximately 1.48 cubic yards. Finally, if each bag of concrete covers about 0.5 cubic feet, divide the total volume by the coverage per bag to find the number of bags needed: 40.13 / 0.5 = about 81 bags.
You need to specify the slab's width and the length as well.
You will need 3.1 cubic yards or 139 80lb bags. This assumes a waste of about 5% which is typical.
You need to specify the slab's width and the length as well.
8 square yards
You will need 27.6 cubic yards of cement.