# Typical Properties for Various Rocks

# Notation and Units

## Metric and Imperial Units

The above values have been provided with both imperial and metric units. As with all calculations care must be taken to keep consistent units throughout. Additional information has been provided below.

# Notation

- ρ = bulk density (the ratio of the total mass to the total volume), ib/ft
^{3}or kg/m^{3} - E = elastic modulus, ksi or MPa