CHS · EN 10219 · cold formed

CHS 21.3/3

CHS 21.3/3 is a cold-formed circular hollow section per EN 10219: outer diameter 21.3 mm, wall thickness 3 mm, weight 1.4 kg/m, cross-section area 1.7 cm², moment of inertia Iy = 0.7 cm⁴, elastic section modulus Wel,y = 0.7 cm³.

Cross section · mm

21.3Outer diameter d · mm

3Wall thickness t · mm

1.72Area A · cm²

1.35Mass G · kg/m

Geometry

Outer diameter d21.30 mm

Wall thickness t3.00 mm

Cross-section area A1.720 cm²

Weight G
steel 7850 kg/m³1.35kg/m

Section properties

Moment of inertia I0.741 cm⁴

W_el0.696 cm³

W_pl1.014 cm³

Radius of gyration i6.60 mm

Torsion constant I_t1.483 cm⁴

Reference

Profile standardEN 10219

EurocodeEN 1993-1-1 (EC3)

Check to EN 1993-1-1

Work out the utilisation of CHS 21.3/3 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/ 0.3 kN·m

Shear/ 17.4 kN

Compression/ 0.6 kN

Steelγ_M0γ_M1L_crmmkClass1

Resistances and factors

M_c,y,Rd / M_c,z,RdW_pl0.3 kN·m / 0.3 kN·m

V_c,z,Rd / V_c,y,RdA_v = 109 mm²17.4 kN / 17.4 kN

N_pl,Rd / N_b,Rd47.3 kN / 0.6 kN

N_cr,y / N_cr,z0.6 kN / 0.6 kN

f_yEN 10219-1275 MPa

γ_M0 / γ_M11.00 / 1.00

Curve c · χ0.01

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.