# Job Concrete Mix Volume

Written by Jerry Ratzlaff on . Posted in Civil Engineering

Job concrete mix volume, abbreviated as $$V_a$$, can determine the amount of concrete that needs to be delivered to a job site.

## Job Concrete Mix Volume formula

 $$\large{ V_a = \frac{ W_m }{ SG \; \rho_w } }$$

### Where:

 Units English Metric $$\large{ V_a }$$ = absolute volume $$\large{ft^3}$$ $$\large{m^3}$$ $$\large{ \rho_w }$$   (Greek symbol rho) = density of water $$\large{\frac{lbm}{ft^3}}$$ $$\large{\frac{kg}{m^3}}$$ $$\large{ SG }$$ = specific gravity of material $$\large{dimensionless}$$ $$\large{ W_m }$$ = weight of material $$\large{lbf}$$ $$\large{N}$$