[ \textInteraction = (0.00168 \times 250) + (0.00122 \times 150) ] [ = 0.420 + 0.183 = 0.603 ]
With Table 6-2, the process is linear:
The table is built on the concept of converting the applied axial load (( P_r )) into an equivalent moment. It uses two coefficients:
[ M_ux \leq \phi_b M_nx - p \cdot P_u ] where ( p ) is tabulated in ( 10^-3 ) (kip-ft/kip), meaning: [ p_\textactual = \fracp_\texttable1000 \quad \textin ft ]
Table 6-2 covers compression + bending . For tension + bending, you would use Table 6-1 (for combined tension and flexure).
[ \textInteraction = (0.00168 \times 250) + (0.00122 \times 150) ] [ = 0.420 + 0.183 = 0.603 ]
With Table 6-2, the process is linear:
The table is built on the concept of converting the applied axial load (( P_r )) into an equivalent moment. It uses two coefficients:
[ M_ux \leq \phi_b M_nx - p \cdot P_u ] where ( p ) is tabulated in ( 10^-3 ) (kip-ft/kip), meaning: [ p_\textactual = \fracp_\texttable1000 \quad \textin ft ]
Table 6-2 covers compression + bending . For tension + bending, you would use Table 6-1 (for combined tension and flexure).
