I use one bag to 1 1/2 bags per hole and fill the rest of the way back with tamped topsoil... whatever came out of the hole.
1.042 CF of concrete per unit
42 cubic feet or 1.56 yards.
A standard 8x8x16 2 core block contains about .25cf of open space
10 80# bags will fill about 6 cubic feet, so 375 bags should fill 225 cubic feet (30 x 30 x 0.25).ANS 2 -At least in my area, it would be much cheaper ordering this to be delivered by a concrete truck.An 80 lb. bag of concrete is 2/3 of a cubic ft. of concrete. 3 bags is 2 cu. ft. So for 225 cu.ft. youll need 338 bags of concrete.
There is no dirt. It's a hole.
A hole with two dimensions has no third dimension. → its volume is 6 ft × 10 in × 0 ft = 0 ft³ → You require NO concrete to fill a hole which is given as an area as it has NO volume.
Depends on the length of the hole.
17.5 cubic feet or about 3/4 of 1 cubic yard.
18.6240 yd³
about 432 cubic inches
None, as a hole which is 6 inches wide and 42 inches long has no depth and thus no volume.
How much concrete is required to fill 100 cu feet
I use one bag to 1 1/2 bags per hole and fill the rest of the way back with tamped topsoil... whatever came out of the hole.
Fill it till it runs out of the fill hole. Again that's the FILL HOLE, not the DRAIN HOLE. They are separate.
(0.45/2)2 x pi x 2 = 1/3rd of a cubic meter
how much 1" rock will I need to fill in a hole 20' long, 2' wide' and about 2' deep