In a steel beam-column designed as per IS 800 (Cl. 9.3), the interaction equation for combined axial compression and biaxial bending includes terms for:
Choose the correct answer
Axial utilization only
Axial utilization plus moment utilization about each axis (with Cmy, Cmz factors)
Only the dominant bending direction
Shear and torsion only
Correct Answer
B. Axial utilization plus moment utilization about each axis (with Cmy, Cmz factors)
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IS 800 interaction equation: P/Pd + Cmy x My/Mdy + Cmz x Mz/Mdz <= 1.0. Cm = equivalent uniform moment factor accounting for non-uniform moment distribution. Pd, Mdy, Mdz = design capacities for axial and moment about y and z axes.
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