Steps for Designing Columns

A structured approach to column design per NDS 2024 ASD.

Design Steps

1. Determine axial load – From gravity loads and applicable combinations.
2. Select trial size – Based on slenderness ratio limits.
3. Compute buckling capacity – F'_c = F_c × C_D × C_M × C_t × C_F × C_P.
4. Check compression – P ≤ F'_c × A.
5. Check combined stress – If bending exists, use interaction equations per NDS 3.9.2.

References

• NDS 2024, Section 3.7 (Column Stability Factor C_P)
• NDS 2024, Section 3.9 (Combined Stresses)