RHS · EN 10210 · hot finished

RHS 80×40/5

RHS 80×40/5 is a hot-finished rectangular hollow section per EN 10210: height 80 mm, width 40 mm, wall thickness 5 mm, weight 8.4 kg/m, cross-section area 10.7 cm², moment of inertia Iy = 80.3 cm⁴, elastic section modulus Wel,y = 20.1 cm³.

Cross section · mm

80Height h · mm

40Width b · mm

10.73Area A · cm²

8.42Mass G · kg/m

Geometry

Height h80.00 mm

Width b40.00 mm

Wall thickness t5.00 mm

Outer corner radius r_o7.50 mm

Inner corner radius r_i5.00 mm

Cross-section area A10.730 cm²

Weight G
steel 7850 kg/m³8.42kg/m

Section properties

I80.280 cm⁴25.700 cm⁴

W_el20.070 cm³12.850 cm³

W_pl26.130 cm³15.660 cm³

I_t65.050 cm⁴

Reference

Profile standardEN 10210

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/ 7.2 kN·m

Shear/ 113.6 kN

Compression/ 20.2 kN

Steelγ_M0γ_M1L_crmmkClass1

Resistances and factors

M_c,y,Rd / M_c,z,RdW_pl7.2 kN·m / 4.3 kN·m

V_c,z,Rd / V_c,y,RdA_v = 715 mm²113.6 kN / 56.8 kN

N_pl,Rd / N_b,Rd295.1 kN / 20.2 kN

N_cr,y / N_cr,z66.6 kN / 21.3 kN

f_yEN 10210-1275 MPa

γ_M0 / γ_M11.00 / 1.00

Curve a · χ0.07

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.