RHS · EN 10210 · hot finished

RHS 80×40/3.2

RHS 80×40/3.2 is a hot-finished rectangular hollow section per EN 10210: height 80 mm, width 40 mm, wall thickness 3.2 mm, weight 5.6 kg/m, cross-section area 7.2 cm², moment of inertia Iy = 57.2 cm⁴, elastic section modulus Wel,y = 14.3 cm³.

Cross section · mm

80Height h · mm

40Width b · mm

7.16Area A · cm²

5.62Mass G · kg/m

Geometry

Height h80.00 mm

Width b40.00 mm

Wall thickness t3.20 mm

Outer corner radius r_o4.80 mm

Inner corner radius r_i3.20 mm

Cross-section area A7.160 cm²

Weight G
steel 7850 kg/m³5.62kg/m

Section properties

I57.180 cm⁴18.920 cm⁴

W_el14.300 cm³9.459 cm³

W_pl18.040 cm³10.990 cm³

I_t46.190 cm⁴

Reference

Profile standardEN 10210

EurocodeEN 1993-1-1 (EC3)

Check to EN 1993-1-1

Work out the utilisation of RHS 80×40/3.2 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/ 5.0 kN·m

Shear/ 75.8 kN

Compression/ 14.8 kN

Steelγ_M0γ_M1L_crmmkClass1

Resistances and factors

M_c,y,Rd / M_c,z,RdW_pl5.0 kN·m / 3.0 kN·m

V_c,z,Rd / V_c,y,RdA_v = 477 mm²75.8 kN / 37.9 kN

N_pl,Rd / N_b,Rd196.9 kN / 14.8 kN

N_cr,y / N_cr,z47.4 kN / 15.7 kN

f_yEN 10210-1275 MPa

γ_M0 / γ_M11.00 / 1.00

Curve a · χ0.08

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.