> a 4' x 4' x 8' ecology block is about five yards That's just brilliant. (for the rest of the world 1,201,202.4m is 3.5m^3 and density of concrete is around 2

> a 4' x 4' x 8' ecology block is about five yards That's just brilliant. (for the rest of the world 1,201,202.4m is 3.5m^3 and density of concrete is around 2400 kg/m^3)