UPN · EN 10365

UPN 400

UPN 400 is a European U-channel with tapered flanges per EN 10365: height 400 mm, flange width 110 mm, weight 71.8 kg/m, cross-section area 91.5 cm², moment of inertia Iy = 20350 cm⁴, elastic section modulus Wel,y = 1020 cm³.

Cross section · mm

400Height h · mm

110Flange width b · mm

91.50Area A · cm²

71.80Mass G · kg/m

Geometry

Height400.00 mm

Flange width110.00 mm

Flange thickness t_f18.00 mm

Web thickness t_w14.00 mm

Root radius r₁18.00 mm

Toe radius r₂9.00 mm

Centroid position e_y26.80 mm

Cross-section area A91.500 cm²

Weight G
steel 7850 kg/m³71.80kg/m

Section properties

I20 350.000 cm⁴846.000 cm⁴

W_el1 020.000 cm³102.000 cm³

W_pl1 240.000 cm³190.000 cm³

i149.00 mm30.40 mm

max S615.730 cm³57.560 cm³

Torsion & LT buckling

Torsion constant I_t81.600 cm⁴

Warping constant I_ω221 000.0 cm⁶

Reference

Profile standardEN 10365

EurocodeEN 1993-1-1 (EC3)

Check to EN 1993-1-1

Work out the utilisation of UPN 400 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/ 328.6 kN·m

Shear/ 882.2 kN

Compression/ 538.5 kN

Steelγ_M0γ_M1L_crmmkf_y265MPaClass1

Resistances and factors

M_c,y,Rd / M_c,z,RdW_pl328.6 kN·m / 50.4 kN·m

V_c,z,Rd / V_c,y,RdA_v = 5766 mm²882.2 kN / 605.9 kN

N_pl,Rd / N_b,Rd2.42 MN / 538.5 kN

N_cr,y / N_cr,z16.87 MN / 701.4 kN

f_ytf = 18.0 mm > 16 mm, EN 10025-2265 MPa

γ_M0 / γ_M11.00 / 1.00

Curve c · χ0.22

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.