The expanded interaction equation becomes:
Choose a candidate W-shape based on initial load estimates. aisc manual table 6-2
Find a W12 where ( p P_r + b_x M_rx \le 1.0 ). Table 6-2 reformats this into:
Let’s open the AISC Manual to Part 6. You will see a two-page spread for each W-shape series (e.g., W12, W14, W16). Here is what each column represents: aisc manual table 6-2
For a well-proportioned beam-column, the ( p P_r ) term and the ( b_x M_rx ) term should each be roughly 0.5 or less. If one term dominates (>0.9), you are likely using the wrong shape—either too weak in axial load or too weak in bending.
However, Table 6-2 reformats this into:
The expanded interaction equation becomes:
Choose a candidate W-shape based on initial load estimates.
Find a W12 where ( p P_r + b_x M_rx \le 1.0 ).
Let’s open the AISC Manual to Part 6. You will see a two-page spread for each W-shape series (e.g., W12, W14, W16). Here is what each column represents:
For a well-proportioned beam-column, the ( p P_r ) term and the ( b_x M_rx ) term should each be roughly 0.5 or less. If one term dominates (>0.9), you are likely using the wrong shape—either too weak in axial load or too weak in bending.
However, Table 6-2 reformats this into: