RHS · EN 10219 · cold formed

RHS 100×80/5

RHS 100×80/5 is a cold-formed rectangular hollow section per EN 10219: height 100 mm, width 80 mm, wall thickness 5 mm, weight 12.8 kg/m, cross-section area 16.4 cm², moment of inertia Iy = 225.9 cm⁴, elastic section modulus Wel,y = 45.2 cm³.

Cross section · mm

100Height h · mm

80Width b · mm

16.36Area A · cm²

12.80Mass G · kg/m

Geometry

Height h100.00 mm

Width b80.00 mm

Wall thickness t5.00 mm

Outer corner radius r_o10.00 mm

Inner corner radius r_i5.00 mm

Cross-section area A16.360 cm²

Weight G
steel 7850 kg/m³12.80kg/m

Section properties

I225.900 cm⁴159.600 cm⁴

W_el45.190 cm³39.900 cm³

W_pl55.090 cm³47.240 cm³

I_t307.500 cm⁴

Reference

Profile standardEN 10219

EurocodeEN 1993-1-1 (EC3)

Check to EN 1993-1-1

Work out the utilisation of RHS 100×80/5 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/ 15.1 kN·m

Shear/ 144.3 kN

Compression/ 101.3 kN

Steelγ_M0γ_M1L_crmmkClass1

Resistances and factors

M_c,y,Rd / M_c,z,RdW_pl15.1 kN·m / 13.0 kN·m

V_c,z,Rd / V_c,y,RdA_v = 909 mm²144.3 kN / 115.4 kN

N_pl,Rd / N_b,Rd449.9 kN / 101.3 kN

N_cr,y / N_cr,z187.3 kN / 132.3 kN

f_yEN 10219-1275 MPa

γ_M0 / γ_M11.00 / 1.00

Curve c · χ0.23

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.