Formulas: Combined Flexure and Axial Force

Equation A-2-3

The interaction of flexure and compression shall be limited by Equations I5-1a and I5-1b, where the term $c_{p}$ is determined using Equation A-2-3 and $c_{m}$ is determined using Equation A-2-4:

Equation A-2-4

where

• $B \quad$ = flange width of rectangular cross section, in. (mm)
• $\begin{aligned} H & =\text { web depth of rectangular cross section, in. (mm) }\end{aligned}$
• $F_{y, \max }=$ maximum permitted yield stress of steel $=100 \mathrm{ksi}(690 \mathrm{MPa})$
• $\begin{aligned} P_{n} & =\text { nominal axial strength calculated in accordance with Section } 2.1 .2 \\ & \text { kips (N) }\end{aligned}$
• $\begin{aligned} P_{n o} & =\text { nominal axial compressive strength without consideration of length ef- } \\ & \text { fects calculated in accordance with Section 2.1.2, kips (N) }\end{aligned}$

Found in

• RECTANGULAR FILLED COMPOSITE MEMBERS