RHS · EN 10219 · cold formed

RHS 100×80/3

RHS 100×80/3 is a cold-formed rectangular hollow section per EN 10219: height 100 mm, width 80 mm, wall thickness 3 mm, weight 8 kg/m, cross-section area 10.2 cm², moment of inertia Iy = 148.8 cm⁴, elastic section modulus Wel,y = 29.8 cm³.

Cross section · mm

100Height h · mm

80Width b · mm

10.21Area A · cm²

8.01Mass G · kg/m

Geometry

Height h100.00 mm

Width b80.00 mm

Wall thickness t3.00 mm

Outer corner radius r_o6.00 mm

Inner corner radius r_i3.00 mm

Cross-section area A10.210 cm²

Weight G
steel 7850 kg/m³8.01kg/m

Section properties

I148.800 cm⁴105.600 cm⁴

W_el29.760 cm³26.410 cm³

W_pl35.390 cm³30.400 cm³

I_t196.100 cm⁴

Reference

Profile standardEN 10219

EurocodeEN 1993-1-1 (EC3)

Check to EN 1993-1-1

Work out the utilisation of RHS 100×80/3 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/ 9.7 kN·m

Shear/ 90.1 kN

Compression/ 66.4 kN

Steelγ_M0γ_M1L_crmmkClass1

Resistances and factors

M_c,y,Rd / M_c,z,RdW_pl9.7 kN·m / 8.4 kN·m

V_c,z,Rd / V_c,y,RdA_v = 567 mm²90.1 kN / 72.0 kN

N_pl,Rd / N_b,Rd280.8 kN / 66.4 kN

N_cr,y / N_cr,z123.4 kN / 87.5 kN

f_yEN 10219-1275 MPa

γ_M0 / γ_M11.00 / 1.00

Curve c · χ0.24

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.