4.14 cubic metres.Sounds like you are doing a driveway. If it was me I'd buy 5 cu. mtrs. I have always believed it has to be 4 inch [10cm] if cars are to use it.
9' by 18' by 4" thick requires at least two cubic yards.
Rubber cement can dry in 15 minutes if it is not a very thick coat. If it is a thick coat, it will take longer.
one yard of cement will make a 8 x 10 square foot slab at 4 inches thick, that's 80 sq. feet per yard of cement at 4 inches thick.
As a guideline, 4 inches thick, but it would depend on what is going to be sitting on top of it. You may need thicker and/or to reinforce it with rebar.
6
4.23776 cubic yards
You will need at least 9.68 cubic yards of cement.
0.86 cubic yards is needed.
A minimum of 5.93 cubic yards is needed.
How do you calculate cement mortar in 230mm thick brick
13 1/3 cubic yards
how many bags of cement for a pad 4x7x4 inches thick
9' by 18' by 4" thick requires at least two cubic yards.
2x27x0.1=5.4 2x27=54 54x0.1=5.4
Rubber cement can dry in 15 minutes if it is not a very thick coat. If it is a thick coat, it will take longer.
It would be 0.3 metres.
You need enough for a little less than 10 cubic feet. You can read how much coverage of cement there is per bag on the bag and determine from there. I had to use 18 bags of ready-mix on a 2 ft by 12 ft by 3,5 in thick slab,