10-inches thick - covers 32 square feet. 12-inches thick - covers 27 square feet. For example, let's calculate how much concrete is needed for a 5-inch thick rectangular driveway, 60-feet long (length) and 18-feet wide (width). The area of the driveway is 1,080 square feet (60-feet x 18-feet).
http://www.schlosserconcrete.com/Concrete-Calculator.html
Square or Rectangle Concrete Slab: Notes: Pre-mix concrete comes in bags that are 60 lbs. and 80 lbs. A 60 lb. bag provides 0.45 cubic feet of cured concrete. A 80 lb. bag provides 0.6 cubic feet of cured concrete. If you have concrete delivered it is sold by the yard (which is a cubic yard = 27 cubic feet).
http://www.renovation-headquarters.com/concrete-calculation.html
One cubic yard of concrete would fill a container that is 1 yard by 1 yard by 1 yard or 3 feet by 3 feet by 3 feet or 27 cubic feet. In order to determine the amount of concrete that you will need for your project, you will first need to determine the volume of the space that will be filled with concrete.
http://www.b4ubuild.com/site/answers/calculating-concrete-order/
One cubic yard of concrete would fill a container that is 1 yard by 1 yard by 1 yard or 3 feet by 3 feet by 3 feet or 27 cubic feet. Dear Tom, In order to determine the amount of concrete that you will need for your project, you will first need to determine the volume of the space that will be filled with concrete.
http://www.b4ubuild.com/site/answers/calculating-concrete-order/
20 20 1/2 = 200 cubic feet. One yard is three feet so a cubic yard is three feet by three feet by three feet. 3 3 3 = 27 and hence 1 cubic yard is 27 cubic feet. Thus the volume of concrete in the slab is. 200/27 = 7.4 cubic yards. In a similar fashion each footing has a volume of.
http://mathcentral.uregina.ca/QQ/database/QQ.09.03/john2.html
However, since concrete is generally ordered by the cubic yard – in America – that number still needs to be divided by 27 cubic feet (3-feet x 3-feet x 3-feet) in order to arrive at the number of cubic yards. 415.9584 cubic feet / 27 cubic feet = 15.4059 cubic yards.
http://www.b4ubuild.com/site/answers/calculating-concrete-order/
Assuming you are talking about a cubic yard of concrete then this will cover 81 square feet to a depth of 4 inches. This is how you work it out. A yard is 3 feet. so a square yard (3 feet by 3 feet) is 9 square feet. There are also 12 inches in a foot and 3 feet in a yard, which makes the cubic yard of concrete 36 inches high.
http://www.answers.com/Q/How_many_square_feet_will_a_yard_of_concrete_cover_at_4_inches_thick
According to the table above, one cubic yard of concrete placed at a thickness of 5-inches covers 65 square feet. In a perfect universe, our 1,080 square foot driveway will need exactly 16.62 cubic yards of concrete (1,080 square feet / 65 square feet equals 16.62 cubic yards).
http://www.schlosserconcrete.com/Concrete-Calculator.html
A yard of concrete is a measure of volume. A square foot is a measure of area. A cubic yard is 27 cubic feet of stuff. (3x3x3)To relate volume to area you must extend the area over a third dimension. One square foot that is one foot deep will equal one cubic foot. (1x1x1)So, a yard of concrete is 27 cubic feet or 3 feet tall 3 feet wide 3 feet deep. concrete wieghs 150lbs per cubic foot 27cubic feet times 150 pounds is 4050 pounds. This is 1 cubic yard of concrete.
http://www.answers.com/Q/How_many_square_feet_are_in_1_yard_of_concrete
Notes: 1  Pre-mix concrete comes in bags that are 60 lbs. and 80 lbs. 2  A 60 lb. bag provides 0.45 cubic feet of cured concrete. 3  A 80 lb. bag provides 0.6 cubic feet of cured concrete.  If you have concrete delivered it is sold by the yard (which is a cubic yard = 27 cubic feet).
http://www.renovation-headquarters.com/concrete-calculation.html
how many feet in a yard concrete square
There are 27 cubic feet in a yard concrete square.