How to figure the cubic yards of 30"long x 2'6" wide?

Question

trying to figure how much concrete is needed

Answer 1

The following is a table giving the number of cubic yards of concrete required to pour slabs of different size and thickness. To use this table, multiply the length by the width of the area you plan to concrete. This will give you the square footage in the area.

Thickness in Inches
area in sq. ft. 4 5 6 8 12
50 0.62 0.77 0.93 1.2 1.9
100 1.2 1.5 1.9 2.5 3.7
200 2.5 3.1 3.7 4.9 7.4
300 3.7 4.7 5.6 7.4 11.1
400 4.9 6.2 7.4 9.8 14.8
500 6.2 7.2 9.3 12.4 18.6
Cubic yards of concrete in slabs of various thickness

Now, refer to the number of square feet and the thickness in inches of the slab you plan to pour. The figures on the appropriate line will show the number of cubic yards of concrete required to do the job.

For example, suppose you are planning to pour a patio 10 in. x 14 in.. This is a total of 140 square feet. Suppose you plan to pour the slab 5 in. thick. by using the table you find that 100 square feet of a slab this thick would require 1.5 cubic yards and an additional 50 square feet would require .77 cubic yards. Adding these two together you would find you will need 2.27 cubic yards of concrete to do the job.

Answer 2

you didn't tell us how deep. All we have is about 625 square feet. We need the depth. If the depth is 4 inches (or .25 of a foot) then the cubic feet is 156 or 157 divide that by 27 and you get about 5.8 cubic yards........check my math.

Answer 3

To figure cubic yards you need depth also. Convert all the measurments to portions of a yard and multiply. 30 " is 0.833 and 2'6" is the same 0.833 all you need is the depth.

Answer 4

assuming your concrete would be 3" thick you would need .06 yards of concrete