!!top!!: Aisc Manual Table 6-2

The table is organized by shape, then by unbraced length (in feet). Typically, ( L_b ) ranges from 0 to 50 feet. The table explicitly accounts for Lateral-Torsional Buckling (LTB). As ( L_b ) increases, ( b_x ) increases (indicating lower moment capacity).

[ \fracP_rP_n / \Omega_c + \fracM_rxM_nx / \Omega_b \le 1.0 ] aisc manual table 6-2

: Look for the row corresponding to the effective unbraced length of the member. Read Strengths : Directly find the available axial ( cap P sub n ), shear ( cap V sub n ), and moment ( cap M sub n ) strengths for both Interaction Check : Use the provided coefficients ( ) to quickly satisfy the Chapter H interaction equations ( Key Benefits The table is organized by shape, then by

W-Shapes, Selection by ( P_p ) (Axial Strength) for Combined Forces and Strong-Axis Bending As ( L_b ) increases, ( b_x )

Where:

W12×65, ( L_b = 10 \text ft ), ( P_u = 150 \text kips ), ( M_ux = 250 \text kip-ft ), ASTM A992 (Fy=50 ksi).

[ M_cx,available = \phi_b M_cx - p \cdot P_u ] [ M_cx,available = 340 - (0.915 \times 150) = 340 - 137.25 = 202.75 \text kip-ft ]