CHS · EN 10210 · hot finished

CHS 323.9/12.5

CHS 323.9/12.5 is a hot-finished circular hollow section per EN 10210: outer diameter 323.9 mm, wall thickness 12.5 mm, weight 96 kg/m, cross-section area 122.3 cm², moment of inertia Iy = 14850 cm⁴, elastic section modulus Wel,y = 916.7 cm³.

Cross section · mm

323.9Outer diameter d · mm

12.5Wall thickness t · mm

122.29Area A · cm²

96.00Mass G · kg/m

Geometry

Outer diameter d323.90 mm

Wall thickness t12.50 mm

Cross-section area A122.290 cm²

Weight G
steel 7850 kg/m³96.00kg/m

Section properties

Moment of inertia I14 850.000 cm⁴

W_el916.700 cm³

W_pl1 213.000 cm³

Radius of gyration i110.20 mm

Torsion constant I_t29 690.000 cm⁴

Reference

Profile standardEN 10210

EurocodeEN 1993-1-1 (EC3)

Check to EN 1993-1-1

Work out the utilisation of CHS 323.9/12.5 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/ 333.6 kN·m

Shear/ 1.24 MN

Compression/ 3.08 MN

Steelγ_M0γ_M1L_crmmkClass1

Resistances and factors

M_c,y,Rd / M_c,z,RdW_pl333.6 kN·m / 333.6 kN·m

V_c,z,Rd / V_c,y,RdA_v = 7785 mm²1.24 MN / 1.24 MN

N_pl,Rd / N_b,Rd3.36 MN / 3.08 MN

N_cr,y / N_cr,z12.31 MN / 12.31 MN

f_yEN 10210-1275 MPa

γ_M0 / γ_M11.00 / 1.00

Curve a · χ0.92

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.