RHS · EN 10219 · cold formed

RHS 100×80/4

RHS 100×80/4 is a cold-formed rectangular hollow section per EN 10219: height 100 mm, width 80 mm, wall thickness 4 mm, weight 10.5 kg/m, cross-section area 13.4 cm², moment of inertia Iy = 189.5 cm⁴, elastic section modulus Wel,y = 37.9 cm³.

Cross section · mm

100Height h · mm

80Width b · mm

13.35Area A · cm²

10.50Mass G · kg/m

Geometry

Height h100.00 mm

Width b80.00 mm

Wall thickness t4.00 mm

Outer corner radius r_o8.00 mm

Inner corner radius r_i4.00 mm

Cross-section area A13.350 cm²

Weight G
steel 7850 kg/m³10.50kg/m

Section properties

I189.500 cm⁴134.200 cm⁴

W_el37.890 cm³33.540 cm³

W_pl45.620 cm³39.150 cm³

I_t253.800 cm⁴

Reference

Profile standardEN 10219

EurocodeEN 1993-1-1 (EC3)

Check to EN 1993-1-1

Work out the utilisation of RHS 100×80/4 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/ 12.5 kN·m

Shear/ 117.8 kN

Compression/ 84.8 kN

Steelγ_M0γ_M1L_crmmkClass1

Resistances and factors

M_c,y,Rd / M_c,z,RdW_pl12.5 kN·m / 10.8 kN·m

V_c,z,Rd / V_c,y,RdA_v = 742 mm²117.8 kN / 94.2 kN

N_pl,Rd / N_b,Rd367.1 kN / 84.8 kN

N_cr,y / N_cr,z157.1 kN / 111.3 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.