L · EN 10056-1

L 80×80/9

L 80×80/9 is an equal-leg steel angle per EN 10056-1: leg length 80 mm, thickness 9 mm, weight 10.8 kg/m, cross-section area 13.7 cm², moment of inertia Iy = 80 cm⁴, elastic section modulus Wel,y = 14 cm³.

Cross section · mm

80Leg a · mm

9Thickness t · mm

13.70Area A · cm²

10.80Mass G · kg/m

Geometry

Leg length a80.00 mm

Thickness t9.00 mm

Cross-section area A13.700 cm²

Centroid C_x=C_y23.0 mm

Weight G
steel 7850 kg/m³10.80kg/m

Section properties

Moment of inertia I_y=I_z80.010 cm⁴

Section modulus W_el14.037 cm³

Plastic modulus W_pl25.580 cm³

Radius of gyration i_y24.20 mm

Principal axes u–v

I_u127.000 cm⁴

I_v33.010 cm⁴

Reference

Profile standardEN 10056-1

EurocodeEN 1993-1-1 (EC3)

Check to EN 1993-1-1

Work out the utilisation of L 80×80/9 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/ 3.9 kN·m

Shear/ 108.8 kN

Compression/ 25.0 kN

Steelγ_M0γ_M1L_crmmkClass3

Resistances and factors

M_c,y,Rd / M_c,z,RdW_el3.9 kN·m / 3.9 kN·m

V_c,z,Rd / V_c,y,RdA_v = 685 mm²108.8 kN / 108.8 kN

N_pl,Rd / N_b,Rd376.8 kN / 25.0 kN

N_cr,y / N_cr,v66.3 kN / 27.4 kN

f_yEN 10025-2275 MPa

γ_M0 / γ_M11.00 / 1.00

Curve b · 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.

For angles the bending values refer to the axes parallel to the legs, which are not principal axes. A moment about one of them also bends the section about the other, so bending has to be resolved into the principal axes u and v and checked biaxially. Buckling already uses the weaker principal axis v.