RHS · EN 10219 · cold formed

RHS 40×20/3

RHS 40×20/3 is a cold-formed rectangular hollow section per EN 10219: height 40 mm, width 20 mm, wall thickness 3 mm, weight 2.4 kg/m, cross-section area 3 cm², moment of inertia Iy = 5.2 cm⁴, elastic section modulus Wel,y = 2.6 cm³.

Cross section · mm

40Height h · mm

20Width b · mm

3.01Area A · cm²

2.36Mass G · kg/m

Geometry

Height h40.00 mm

Width b20.00 mm

Wall thickness t3.00 mm

Outer corner radius r_o6.00 mm

Inner corner radius r_i3.00 mm

Cross-section area A3.010 cm²

Weight G
steel 7850 kg/m³2.36kg/m

Section properties

I5.208 cm⁴1.685 cm⁴

W_el2.604 cm³1.685 cm³

W_pl3.504 cm³2.115 cm³

I_t4.567 cm⁴

Reference

Profile standardEN 10219

EurocodeEN 1993-1-1 (EC3)

Check to EN 1993-1-1

Work out the utilisation of RHS 40×20/3 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/ 1.0 kN·m

Shear/ 31.9 kN

Compression/ 1.3 kN

Steelγ_M0γ_M1L_crmmkClass1

Resistances and factors

M_c,y,Rd / M_c,z,RdW_pl1.0 kN·m / 0.6 kN·m

V_c,z,Rd / V_c,y,RdA_v = 201 mm²31.9 kN / 15.9 kN

N_pl,Rd / N_b,Rd82.8 kN / 1.3 kN

N_cr,y / N_cr,z4.3 kN / 1.4 kN

f_yEN 10219-1275 MPa

γ_M0 / γ_M11.00 / 1.00

Curve c · χ0.02

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.