CHS · EN 10219 · cold formed

CHS 323.9/12

CHS 323.9/12 is a cold-formed circular hollow section per EN 10219: outer diameter 323.9 mm, wall thickness 12 mm, weight 92.3 kg/m, cross-section area 117.6 cm², moment of inertia Iy = 14320 cm⁴, elastic section modulus Wel,y = 884.2 cm³.

Cross section · mm

323.9Outer diameter d · mm

12Wall thickness t · mm

117.58Area A · cm²

92.30Mass G · kg/m

Geometry

Outer diameter d323.90 mm

Wall thickness t12.00 mm

Cross-section area A117.580 cm²

Weight G
steel 7850 kg/m³92.30kg/m

Section properties

Moment of inertia I14 320.000 cm⁴

W_el884.200 cm³

W_pl1 168.000 cm³

Radius of gyration i110.40 mm

Torsion constant I_t28 640.000 cm⁴

Reference

Profile standardEN 10219

EurocodeEN 1993-1-1 (EC3)

Check to EN 1993-1-1

Work out the utilisation of CHS 323.9/12 for your design forces

Find the lightest section Compare sections

Enter the design loads and the section is checked for bending, shear and compression with flexural buckling.

Bending/ 321.2 kN·m

Shear/ 1.19 MN

Compression/ 2.69 MN

Steelγ_M0γ_M1L_crmmkClass1

Resistances and factors

M_c,y,Rd / M_c,z,RdW_pl321.2 kN·m / 321.2 kN·m

V_c,z,Rd / V_c,y,RdA_v = 7485 mm²1.19 MN / 1.19 MN

N_pl,Rd / N_b,Rd3.23 MN / 2.69 MN

N_cr,y / N_cr,z11.87 MN / 11.87 MN

f_yEN 10219-1275 MPa

γ_M0 / γ_M11.00 / 1.00

Curve c · χ0.83

Yield strength is taken from the product standard for the governing thickness, so above 16 mm it is lower than the nominal grade. Simplified checks per EN 1993-1-1, without M+N+V interaction, without lateral-torsional buckling and without web shear buckling. Verify with a full design.