H4Rupture of flanges with bolt holes and subjected to tension

At locations of bolt holes in flanges subjected to tension under combined axial force and major-axis flexure, flange tensile rupture strength shall be limited by Equation H4-1. Each flange subjected to tension due to axial force and flexure shall be checked separately.

where

• $\begin{aligned} P_{r} & =\text { required axial strength of the member at the location of the bolt holes, } \\ & \text { determined in accordance with Chapter C, using LRFD or ASD load com- } \\ & \text { binations, positive in tension and negative in compression, kips (N) }\end{aligned}$

• $P_{c}$ = available axial strength for the limit state of tensile rupture of the net section at the location of bolt holes, $\phi_{t} P_{n}$ or $P_{n} / \Omega_{t}$, determined in accordance with Section D2(b), kips (N)

• $M_{r x}=$ required flexural strength at the location of the bolt holes, determined in accordance with Chapter C, using LRFD or ASD load combinations, positive for tension and negative for compression in the flange under consideration , kip-in. (N-mm)

• $M_{c x}=$ available flexural strength about the $x$-axis for the limit state of tensile rupture of the flange, $\phi_{b} M_{n}$ or $M_{n} / \Omega_{b}$, determined according to Section F13.1. When the limit state of tensile rupture in flexure does not apply, use the plastic moment, $M_{p}$, determined with bolt holes not taken into consideration, kip-in. (N-mm)