157 pounds
It depends how thick you want it
2.15
14.81 yds
you can do the math: LXWXD DIVIDED BY 27
how many cubic feet in a yard of concret
It depends on how thick you want the concrete.
There are too many variables that are not quantified in the question to answer this. What kind of concrete? (There are different kinds.) Is the concrete reinforced? How is the square of concrete supported? What is the nature of the load and how is it distributed on the slab? We could go on.
It depends how thick you want it
2.15
14.81 yds
It is all dependant on how thick the concrete is. You take the square footage and turn that into cubed feet (where the thickness comes in) if its 1" thick you multiply the square footage by.083, if its 2" thick you multiply by.17. To come up with this number you take the thickness say 3" and divide that by 12 (12 inches in a foot), so for 3 inches you get .25. So back to the question at hand, say your 30 square feet of concrete is 6 inches thick, your equation would look like this: 30 X .5 = 15. So 15 is your cubed footage. You then multiply this number by 150 which is the weight in pounds of 1 cubic foot of concrete. The number you come up with is 2,250. That is the amount in pounds of your 30 square feet of concrete assuming it is 6 inches thick.
On average, concrete weighs about 12.5 pounds per square foot per inch thick. This can vary based on the type and density of the concrete mix.
you can do the math: LXWXD DIVIDED BY 27
The weight of a square meter of concrete depends on its density, which typically ranges from 2,300 to 2,500 kilograms per cubic meter. Therefore, a square meter of concrete that is 10 centimeters thick would weigh between 230 to 250 kilograms.
how many cubic feet in a yard of concret
625 times 0.5 = 312.5 cubic feet will be needed
A 6-inch concrete slab can typically support around 150 pounds per square foot.