Section Properties — Channel (C) Section

1

Geometry

Overall width b, depth h, flange thickness t_f, web thickness t_w

Shear centre S lies outside the web, at a distance e from the web centreline on the side away from the flanges: e = 3b₁²t_f / (6b₁t_f + h₁t_w), b₁ = b − t_w/2, h₁ = h − t_f (thin-walled). If the load does not pass through S, the section twists.

2

Geometric properties

Area, centroid, moment of inertia, elastic section modulus, radius of gyration

3

Plastic modulus and torsion

Z_x, Z_y, shape factor, J

4

Principal axes

I_xy, θ, I₁, I₂