The cement i found is in 25kg bags (?5.98 each). The floor i think will be 4 inches thick??? or any suggestions please.
The pros are that you will have one inch of flooring but the con is that since they aren't glued together, they will flex independently. If you are going to go that route, use some liquid nails between the layers of plywood and use ringshank nails to secure them.
one bag will give you 1 sq foot, just make a wood floor [cheaper]
I disagree with the 1 bag => 1 sq ft. I bag of cement will make more than 1 cubic foot of concrete... and exactyly how much it will make is dependent upon the mix, the proportion of cement:gravel:sand. A meter is slightly more than 3 1/4 feet. A square meter is about 10.6 ft^2. You want to cover3m x 2m = 6 m^2... which is 63.6 ft^2. 4 thick is 1/3 of a foot thick. You need about 21.2 cubic feet of concrete. I think a bag of cement is a cubic foot of cement. A mixture might be something like three units of cement, 6 units of gravel and a couple of units of sand. Most of the final volume will be from the gravel. This mix would yield somewhat more than 2 cubic feet of concrete for each bag of cement. It looks to me as though you need 10 bags of cement to make 21+ ft^3 of material.
