Unconfined compressive strength of rock

Input(s)

$S_{o}$: Cohesive Strength (psi)

$\mu$: Slope of Failure Line (dimensionless)

Output(s)

$C_{o}$: Unconfined Compressive Strength of Rock (psi)

Formula(s)

$$ C_{\mathrm{o}}=2 * S_{\mathrm{o}} *\left(\left(\mu^{2}+1\right)^{0.5}+\mu\right) $$

Reference(s)

Mark D. Zoback, Reservoir Geomechanics, Cambridge University Press, UK, Page: 89.