Aisc Manual Table 6-2

Choose a candidate W-shape based on initial load estimates.

The is the lightest adequate section.

The expanded interaction equation becomes: aisc manual table 6-2

: It covers a wide range of W-shapes typically used for beams, columns, and beam-columns. For further guidance, the AISC Companion V16.0 provides detailed Design Examples Choose a candidate W-shape based on initial load estimates

[ \frac\phi_b M_nx\phi_c P_n \text has units: \frackip\text-ftkip = ft ] So ( p ) = ( \frac98 \times (\textft) \times 10^3 ). But ( p ) is tabulated without units – it's a coefficient. When you compute ( p \cdot P_u ), the product has units of kip-ft, matching ( M_ux ). and beam-columns. For further guidance

Now, express this as: [ M_ux = \phi_b M_nx \cdot \frac98 - \frac98 \cdot \frac\phi_b M_nx\phi_c P_n \cdot P_u ]