RHS · EN 10219 · cold formed

RHS 70×50/3

RHS 70×50/3 is a cold-formed rectangular hollow section per EN 10219: height 70 mm, width 50 mm, wall thickness 3 mm, weight 5.2 kg/m, cross-section area 6.6 cm², moment of inertia Iy = 44.1 cm⁴, elastic section modulus Wel,y = 12.6 cm³.

Cross section · mm

70Height h · mm

50Width b · mm

6.61Area A · cm²

5.19Mass G · kg/m

Geometry

Height h70.00 mm

Width b50.00 mm

Wall thickness t3.00 mm

Outer corner radius r_o6.00 mm

Inner corner radius r_i3.00 mm

Cross-section area A6.610 cm²

Weight G
steel 7850 kg/m³5.19kg/m

Section properties

I44.050 cm⁴26.100 cm⁴

W_el12.590 cm³10.440 cm³

W_pl15.400 cm³12.210 cm³

I_t53.620 cm⁴

Reference

Profile standardEN 10219

EurocodeEN 1993-1-1 (EC3)

Check to EN 1993-1-1

Work out the utilisation of RHS 70×50/3 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/ 4.2 kN·m

Shear/ 61.2 kN

Compression/ 18.4 kN

Steelγ_M0γ_M1L_crmmkClass1

Resistances and factors

M_c,y,Rd / M_c,z,RdW_pl4.2 kN·m / 3.4 kN·m

V_c,z,Rd / V_c,y,RdA_v = 386 mm²61.2 kN / 43.7 kN

N_pl,Rd / N_b,Rd181.8 kN / 18.4 kN

N_cr,y / N_cr,z36.5 kN / 21.6 kN

f_yEN 10219-1275 MPa

γ_M0 / γ_M11.00 / 1.00

Curve c · χ0.10

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.