RHS · EN 10219 · cold formed

RHS 300×100/12.5

RHS 300×100/12.5 is a cold-formed rectangular hollow section per EN 10219: height 300 mm, width 100 mm, wall thickness 12.5 mm, weight 68.3 kg/m, cross-section area 87 cm², moment of inertia Iy = 8010 cm⁴, elastic section modulus Wel,y = 534 cm³.

Cross section · mm

300Height h · mm

100Width b · mm

87.04Area A · cm²

68.30Mass G · kg/m

Geometry

Height h300.00 mm

Width b100.00 mm

Wall thickness t12.50 mm

Outer corner radius r_o37.50 mm

Inner corner radius r_i25.00 mm

Cross-section area A87.040 cm²

Weight G
steel 7850 kg/m³68.30kg/m

Section properties

I8 010.000 cm⁴1 374.000 cm⁴

W_el534.000 cm³274.800 cm³

W_pl731.800 cm³330.200 cm³

I_t4 292.000 cm⁴

Reference

Profile standardEN 10219

EurocodeEN 1993-1-1 (EC3)

Check to EN 1993-1-1

Work out the utilisation of RHS 300×100/12.5 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/ 201.2 kN·m

Shear/ 1.04 MN

Compression/ 793.3 kN

Steelγ_M0γ_M1L_crmmkClass1

Resistances and factors

M_c,y,Rd / M_c,z,RdW_pl201.2 kN·m / 90.8 kN·m

V_c,z,Rd / V_c,y,RdA_v = 6528 mm²1.04 MN / 345.5 kN

N_pl,Rd / N_b,Rd2.39 MN / 793.3 kN

N_cr,y / N_cr,z6.64 MN / 1.14 MN

f_yEN 10219-1275 MPa

γ_M0 / γ_M11.00 / 1.00

Curve c · χ0.33

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.