Section 11.3.10.4 Cross Sectional Dimensions to Avoid Crushing

Combined stress due to shear and torsion are calculated using equation 11-19:

\sqrt{{(\frac{V_{f}}{b_{w} d_{v}})}^{2} + {(\frac{T_{f} p_{h}}{A_{o h}^{2}})}^{2}} \leq 0.25 ϕ_{c} {f^{'}}_{c}

where

p_h

the perimeter of the centerline of the closed transverse reinforcement.

If the combined stress is greater than 0.25ϕ_cf'_c,a failure will be reported.