Formulas: Flexural Strength

Equation 13-5a

where

$M_{p}=$ moment corresponding to plastic stress distribution over the composite cross section, kip-in. (N-mm)

Equation I3-5b

where

$\lambda, \lambda_{p}$, and $\lambda_{r}$ are width-to-thickness ratios determined from Table II.1b.

$M_{y}=$ yield moment corresponding to yielding of the tension flange and first yield of the compression flange, kip-in. (N-mm). The capacity at first yield shall be calculated assuming a linear elastic stress distribution with the maximum concrete compressive stress limited to $0.7 f_{c}^{\prime}$ and the maximum steel stress limited to $F_{y}$.

Found in

• FLEXURE