Concrete is ordered by volume in cubic yards. So if one cubic yard of the mix has 235 pounds of water and 470 pounds of cement- the mix is a 50 water to cement ratio. Convert the volume from feet to cubic yards to get the number of cubic yards of concrete youll need.
The calculator will automatically estimate the number of cubic yards of concrete that will be required.
HOW TO CALCULATE WATER CEMENT RATIO. This Calculator should be used as an estimating tool ONLY. Enter Height 4 ft or 48 in Enter Diameter 10 in. The formula for cubic yards is this.