CHS · EN 10219 · cold formed

CHS 177.8/12.5

CHS 177.8/12.5 is a cold-formed circular hollow section per EN 10219: outer diameter 177.8 mm, wall thickness 12.5 mm, weight 51 kg/m, cross-section area 64.9 cm², moment of inertia Iy = 2230 cm⁴, elastic section modulus Wel,y = 250.8 cm³.

Cross section · mm

177.8Outer diameter d · mm

12.5Wall thickness t · mm

64.91Area A · cm²

51.00Mass G · kg/m

Geometry

Outer diameter d177.80 mm

Wall thickness t12.50 mm

Cross-section area A64.910 cm²

Weight G
steel 7850 kg/m³51.00kg/m

Section properties

Moment of inertia I2 230.000 cm⁴

W_el250.800 cm³

W_pl342.200 cm³

Radius of gyration i58.60 mm

Torsion constant I_t4 460.000 cm⁴

Reference

Profile standardEN 10219

EurocodeEN 1993-1-1 (EC3)

Check to EN 1993-1-1

Work out the utilisation of CHS 177.8/12.5 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/ 94.1 kN·m

Shear/ 656.1 kN

Compression/ 981.9 kN

Steelγ_M0γ_M1L_crmmkClass1

Resistances and factors

M_c,y,Rd / M_c,z,RdW_pl94.1 kN·m / 94.1 kN·m

V_c,z,Rd / V_c,y,RdA_v = 4132 mm²656.1 kN / 656.1 kN

N_pl,Rd / N_b,Rd1.79 MN / 981.9 kN

N_cr,y / N_cr,z1.85 MN / 1.85 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.