RHS · EN 10219 · cold formed

RHS 100×40/2.5

RHS 100×40/2.5 is a cold-formed rectangular hollow section per EN 10219: height 100 mm, width 40 mm, wall thickness 2.5 mm, weight 5.2 kg/m, cross-section area 6.6 cm², moment of inertia Iy = 79.3 cm⁴, elastic section modulus Wel,y = 15.9 cm³.

Cross section · mm

100Height h · mm

40Width b · mm

6.59Area A · cm²

5.17Mass G · kg/m

Geometry

Height h100.00 mm

Width b40.00 mm

Wall thickness t2.50 mm

Outer corner radius r_o5.00 mm

Inner corner radius r_i2.50 mm

Cross-section area A6.590 cm²

Weight G
steel 7850 kg/m³5.17kg/m

Section properties

I79.320 cm⁴18.780 cm⁴

W_el15.860 cm³9.389 cm³

W_pl20.230 cm³10.590 cm³

I_t50.520 cm⁴

Reference

Profile standardEN 10219

EurocodeEN 1993-1-1 (EC3)

Check to EN 1993-1-1

Work out the utilisation of RHS 100×40/2.5 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/ 5.6 kN·m

Shear/ 74.7 kN

Compression/ 13.6 kN

Steelγ_M0γ_M1L_crmmkClass1 / 3bending / compression

Resistances and factors

M_c,y,Rd / M_c,z,RdW_pl5.6 kN·m / 2.9 kN·m

V_c,z,Rd / V_c,y,RdA_v = 471 mm²74.7 kN / 29.9 kN

N_pl,Rd / N_b,Rd181.2 kN / 13.6 kN

N_cr,y / N_cr,z65.8 kN / 15.6 kN

f_yEN 10219-1275 MPa

γ_M0 / γ_M11.00 / 1.00

Curve c · χ0.07

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.