9x12 feet at 4 inches deep: 1.3 cubic yards.
It depends on the depth required
2.15
This can't be answered because you have not given the third dimension. You must say how thick the slab is.
12 x 12 feet, 4 inches deep: 1.8 cubic yards, minimum.
2x2
I would get 12 to be safe.
18 bags (80 pounds) of quikrete for a 4 inch thick slab.
9x12 feet at 4 inches deep: 1.3 cubic yards.
about how much to pour a concrete slaba 12 x 14'
10 cm = 0.1 meterThe volume of the slab is (6 x 8 x 0.1) = 4.8 cubic meters
129
You will need a minimum of 74.1 cubic yards.
If you want a 3" depth, then 4 cubic yards will do it.
Approximately 12.35 Cubic Yards.
If there are no seams in it - it was not poured in sections, but as one continuous pour.
In order to estimate rcc roof slab you must measure the roof and calculate its area. Then you must contact a professional to see how much slab will be needed.