CHS · EN 10219 · cold formed

CHS 177.8/12

CHS 177.8/12 is a cold-formed circular hollow section per EN 10219: outer diameter 177.8 mm, wall thickness 12 mm, weight 49.1 kg/m, cross-section area 62.5 cm², moment of inertia Iy = 2159 cm⁴, elastic section modulus Wel,y = 242.9 cm³.

Cross section · mm

177.8Outer diameter d · mm

12Wall thickness t · mm

62.51Area A · cm²

49.10Mass G · kg/m

Geometry

Outer diameter d177.80 mm

Wall thickness t12.00 mm

Cross-section area A62.510 cm²

Weight G
steel 7850 kg/m³49.10kg/m

Section properties

Moment of inertia I2 159.000 cm⁴

W_el242.900 cm³

W_pl330.500 cm³

Radius of gyration i58.80 mm

Torsion constant I_t4 318.000 cm⁴

Reference

Profile standardEN 10219

EurocodeEN 1993-1-1 (EC3)

Check to EN 1993-1-1

Work out the utilisation of CHS 177.8/12 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/ 90.9 kN·m

Shear/ 631.8 kN

Compression/ 948.3 kN

Steelγ_M0γ_M1L_crmmkClass1

Resistances and factors

M_c,y,Rd / M_c,z,RdW_pl90.9 kN·m / 90.9 kN·m

V_c,z,Rd / V_c,y,RdA_v = 3980 mm²631.8 kN / 631.8 kN

N_pl,Rd / N_b,Rd1.72 MN / 948.3 kN

N_cr,y / N_cr,z1.79 MN / 1.79 MN

f_yEN 10219-1275 MPa

γ_M0 / γ_M11.00 / 1.00

Curve c · χ0.55

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.