The volume of a cylinder is (pi) x (radius)2 x (length)
The radius of the pipe is half of its diameter = 15 inches
Volume = (pi) x (15)2 x (716 x 12) cubic inches = 3,514.66 cubic feet = 130.17 cubic yards
That's the volume of the pipe. Knowing nothing about concrete, I don't know
how efficiently you can pack it into that volume. and I have to leave that step
up to you.
The volume in the pipe is pi times diameter squared/4 times the length. Eight inch diameter = 2/3 ft so volume is 59.31 cubic feet. Since 27 cu ft = 1 yard then that is 59.31/27 = 2.2 yards of concrete
55.56 cubic yards.
123.44 cubic yards
A yard (of dirt or concrete) is a volume of 1 cubic yard (1 yd)³, as the cubic is assumed in this context. Assuming a circle 7 feet across (diameter), then the radius is 3.5 feet = 1.16667 yards, and 8 inches = 0.2222 yards. So the volume of this is about 0.95 cubic yards. In concrete jargon it would be 0.95 yards.
concrete is sold in cubic yards in the united states. I hope you are using a 1/4 inch diameter reinforce mesh. 1680 / 81 = 20.74 cubic yards without subtracting the mesh volume.
The volume in the pipe is pi times diameter squared/4 times the length. Eight inch diameter = 2/3 ft so volume is 59.31 cubic feet. Since 27 cu ft = 1 yard then that is 59.31/27 = 2.2 yards of concrete
123.44 cubic yards
55.56 cubic yards.
1000 square feet/9 = 111.1 square yards of concrete 6 inches thick. This is the same as 111.1/4.5 = 24.7 cubic yards of concrete.
A yard (of dirt or concrete) is a volume of 1 cubic yard (1 yd)³, as the cubic is assumed in this context. Assuming a circle 7 feet across (diameter), then the radius is 3.5 feet = 1.16667 yards, and 8 inches = 0.2222 yards. So the volume of this is about 0.95 cubic yards. In concrete jargon it would be 0.95 yards.
concrete is sold in cubic yards in the united states. I hope you are using a 1/4 inch diameter reinforce mesh. 1680 / 81 = 20.74 cubic yards without subtracting the mesh volume.
720 square feet at the standard 4-inch depth requires 8.9 cubic yards.
For a 4-inch depth you will need 7.41 cubic yards.
For a 4-inch thick slab, you will need at least 9.48 Cubic Yards.
If your pour to a standard 4-inch depth, you will need 3.54 Cubic Yards.
.99 yds
If you use a standard 4-inch depth, you will need at least 8.9 cubic yards.