RHS · EN 10210 · hot finished

RHS 80×40/8

RHS 80×40/8 is a hot-finished rectangular hollow section per EN 10210: height 80 mm, width 40 mm, wall thickness 8 mm, weight 12.5 kg/m, cross-section area 16 cm², moment of inertia Iy = 106 cm⁴, elastic section modulus Wel,y = 26.5 cm³.

Cross section · mm

80Height h · mm

40Width b · mm

15.95Area A · cm²

12.50Mass G · kg/m

Geometry

Height h80.00 mm

Width b40.00 mm

Wall thickness t8.00 mm

Outer corner radius r_o12.00 mm

Inner corner radius r_i8.00 mm

Cross-section area A15.950 cm²

Weight G
steel 7850 kg/m³12.50kg/m

Section properties

I106.000 cm⁴32.110 cm⁴

W_el26.500 cm³16.050 cm³

W_pl36.470 cm³21.200 cm³

I_t85.760 cm⁴

Reference

Profile standardEN 10210

EurocodeEN 1993-1-1 (EC3)

Check to EN 1993-1-1

Work out the utilisation of RHS 80×40/8 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/ 10.0 kN·m

Shear/ 168.8 kN

Compression/ 25.3 kN

Steelγ_M0γ_M1L_crmmkClass1

Resistances and factors

M_c,y,Rd / M_c,z,RdW_pl10.0 kN·m / 5.8 kN·m

V_c,z,Rd / V_c,y,RdA_v = 1063 mm²168.8 kN / 84.4 kN

N_pl,Rd / N_b,Rd438.6 kN / 25.3 kN

N_cr,y / N_cr,z87.9 kN / 26.6 kN

f_yEN 10210-1275 MPa

γ_M0 / γ_M11.00 / 1.00

Curve a · 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.