RHS · EN 10210 · hot finished

RHS 80×40/6.3

RHS 80×40/6.3 is a hot-finished rectangular hollow section per EN 10210: height 80 mm, width 40 mm, wall thickness 6.3 mm, weight 10.3 kg/m, cross-section area 13.1 cm², moment of inertia Iy = 93.3 cm⁴, elastic section modulus Wel,y = 23.3 cm³.

Cross section · mm

80Height h · mm

40Width b · mm

13.11Area A · cm²

10.30Mass G · kg/m

Geometry

Height h80.00 mm

Width b40.00 mm

Wall thickness t6.30 mm

Outer corner radius r_o9.45 mm

Inner corner radius r_i6.30 mm

Cross-section area A13.110 cm²

Weight G
steel 7850 kg/m³10.30kg/m

Section properties

I93.280 cm⁴29.160 cm⁴

W_el23.320 cm³14.580 cm³

W_pl31.080 cm³18.400 cm³

I_t75.630 cm⁴

Reference

Profile standardEN 10210

EurocodeEN 1993-1-1 (EC3)

Check to EN 1993-1-1

Work out the utilisation of RHS 80×40/6.3 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/ 8.5 kN·m

Shear/ 138.8 kN

Compression/ 22.9 kN

Steelγ_M0γ_M1L_crmmkClass1

Resistances and factors

M_c,y,Rd / M_c,z,RdW_pl8.5 kN·m / 5.1 kN·m

V_c,z,Rd / V_c,y,RdA_v = 874 mm²138.8 kN / 69.4 kN

N_pl,Rd / N_b,Rd360.5 kN / 22.9 kN

N_cr,y / N_cr,z77.3 kN / 24.2 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.