5 col

🧮 Gravity Column Design Calculator

IS 16700, IS 1893, IS 13920, IS 456 with Auto Sizing, Ties, Slenderness, Extra Moments

1. Factored Load Inputs (IS 16700)

Factored Axial Load Pu (kN): Factored Moment Mu (kNm):

2. Seismic Drift Inputs (IS 1893 & IS 13920)

Gravity Load for Drift (kN): Elastic Drift δ_elastic (mm): Response Reduction Factor R: Primary Seismic Moment (kNm): Factored Axial Load (Seismic) (kN):

3. Column Geometry & Length

Unsupported Column Length l_u (mm): Effective Length Factor k (typical 0.65 to 1.0):