RHS · EN 10219 · cold formed

RHS 80×40/5

RHS 80×40/5 is a cold-formed rectangular hollow section per EN 10219: height 80 mm, width 40 mm, wall thickness 5 mm, weight 8.1 kg/m, cross-section area 10.4 cm², moment of inertia Iy = 75.1 cm⁴, elastic section modulus Wel,y = 18.8 cm³.

Cross section · mm

80Height h · mm

40Width b · mm

10.36Area A · cm²

8.13Mass G · kg/m

Geometry

Height h80.00 mm

Width b40.00 mm

Wall thickness t5.00 mm

Outer corner radius r_o10.00 mm

Inner corner radius r_i5.00 mm

Cross-section area A10.360 cm²

Weight G
steel 7850 kg/m³8.13kg/m

Section properties

I75.110 cm⁴24.590 cm⁴

W_el18.780 cm³12.300 cm³

W_pl24.740 cm³15.020 cm³

I_t64.970 cm⁴

Reference

Profile standardEN 10219

EurocodeEN 1993-1-1 (EC3)

Check to EN 1993-1-1

Work out the utilisation of RHS 80×40/5 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/ 6.8 kN·m

Shear/ 109.7 kN

Compression/ 18.0 kN

Steelγ_M0γ_M1L_crmmkClass1

Resistances and factors

M_c,y,Rd / M_c,z,RdW_pl6.8 kN·m / 4.1 kN·m

V_c,z,Rd / V_c,y,RdA_v = 691 mm²109.7 kN / 54.8 kN

N_pl,Rd / N_b,Rd284.9 kN / 18.0 kN

N_cr,y / N_cr,z62.3 kN / 20.4 kN

f_yEN 10219-1275 MPa

γ_M0 / γ_M11.00 / 1.00

Curve c · χ0.06

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.