Spiral Column (SI)

Materials

Concrete $f'_c$ (MPa)

Steel $f_y$ (MPa)

Geometry

Diameter $D$ (mm)

Cover (mm)

Reinforcement

Bar Size (mm)

Total Bars

Spiral Size (mm)

Pitch $s$ (mm)

Applied Loads

Axial $P_u$ (kN)

$M_{ux}$ (kN-m)

$M_{uy}$ (kN-m)

Spiral Column Design

Analyze circular reinforced concrete columns with spiral reinforcement. Handles biaxial bending via vector sum due to polar symmetry.

Section Detail

Interaction Diagram

Analysis Report