### Concrete by 80lb bag - vCalc

2017-3-7u2002·u2002The Concrete by 80lb Bag calculator computes the number of 80 pound bags of concrete and volume of water needed to mix a volume (V) of concrete.. INSTRUCTIONS: Choose units and enter the following: (V) Volume of concrete needed.80 lb Bags: The calculator returns the number of 80 lb bags needed and the water requirement in gallons. However, this can be automatically converted to …

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