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Short Answer: About 50 lbs per foot square by 4" slab
Detailed Calculation:
A number of references online give the density of concrete as 2400 Kg/m^3 which is about the density of solid limestone often used as the agregate in concrete. Given that there are exactly 2.20462262 lbs per kilogram and 39.3700787 inches per meter that works out to about 0.0867 lbs per cubic inch.
Assuming you meant a 12" by 12" by 4" slab that is 576 cubic inches times .0867 which works out to 49.94 lbs per 12" x 12" x 4" slab
So in the future it should be easy to remember that a square foot of concrete that is four inches thick weighs about 50 pounds.
Keep in mind that different types of concrete may vary in density depending on the type of cement used, amount of water, type and size of aggregate mixed in how much sand etc. Fortunately most type of stone and sand used for concrete are pretty close in density and the excess water in the mix will evaporate. So 50 pounds per square foot 4" deep is probably a good estimate in most cases as long as there isn't a lot of steel reinforcing bar or wire embedded in the concrete. Steel is about three times as dense as stone.
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∙ 9y ago
Anonymous
10 lbs
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How many yards of concrete will cover 12ft x 60ft x1ft?
27 cubic yards.will cover 720 square feet @ 1 foot thick
How much concrete would it take to cover a 16x36x2inch deep area?
An 80lb bag of concrete you can at your local home improvement store covers about 4 square foot at 2" thick. So you would need about 144 bags of 80lb concrete.
How many bags of concrete to pour 10 foot by 10 foot space?
Depends on how thick the slab is, but 4" thick (.33 or 1/3 of a foot thick) would be typical. So multiply 10 x 10 = 100 square feet of area times .33(thickness in feet) equals 33 cubic feet. A 90 lb. bag contains about .66(two thirds) of a cubic foot of concrete, so you would need about 1 1/2 bags per cubic foot or 50 bags for 10'x10'x4"
How many yards of concrete for 996sqft at 4inches thick?
996 square feet X 1/3 foot = 332 cubic feet.332 cft / 27 = 12.3 cubic yards
How thick would a driveway be if I have 6 cubic yards of concrete in a 432 square foot area?
About 3 1/2 ". 432 x .375 = 162cf / 27 = 6 cu yards
How much does a square foot of granite 1 inch THICK weigh?
It would weigh about 14.3 pounds .
How much does 30 square foot of concrete weigh?
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.
What is the cost per square foot to pour concrete 6 inches thick?
10.00 dollars per square foot plus permit cost.
What is the weight of a square foot in concrete?
A square foot of concrete has no weight because a square foot has no thickness. A cubic foot of concrete would weigh 65 Kg (143 lb) If you ASSUMED that concrete driveways, paths, etc. are all the same thickness , which they are NOT, then let us say they are 4 inch thick (10cm) In that case, then 1Square Ft of Concrete would weigh one third of the figure given above. Therefore it weighs 48 lb which is the same as 22 Kg.. Density of Concrete is 34.4 gram per cubic Inch or 1.216 ounce per cubic inch. (since you seem to be wanting to use Imperial measure)
How many yards of concrete is in a 18 foot buy 20 foot buy 3 inches thick slab?
How many square yards in a 20x18 feet 3 inches thick
Concrete costs per square foot?
how much does concrete cost per square foot
How many square feet is a yard of concrete?
A yard of concrete is a cubic yard and cannot be converted directly to square feet of coverage. You must first determine the depth or thickness that the concrete will be. For instance, since 1 cubic yard equals 27 cubic feet, a 1 foot thick layer of concrete will cover 9 square yards of area. A 4 inch (1/3 foot) thick layer would cover 27 square feet of area.
How much does a square meter of concrete weigh?
Thisquestion needs clarifying. The question should be 'how much does a CUBIC metre of concrete weigh'. A square metre of concrete would have to have a thickness to make volume.
How many cubic feet of concrete are in a 1 square foot slab that is one foot thick?
ONE I THINK, SINCE THERE ARE 27 CUBIC FEET IN A CUBIC YARD OF CONCRETE (WHICH MEASURES 3 FEET BY 3 FEET BY 3 FEET).
What is the unit load per square foot?
square foot of what, concrete, wood or paper or what
What is the Cost per square foot to sandblast concrete?
whats the cost to sandblast concrete persquare foot
How many yards of concrete will cover 12ft x 60ft x1ft?
27 cubic yards.will cover 720 square feet @ 1 foot thick
