L · EN 10056-1

L 55×55/6

L 55×55/6 is an equal-leg steel angle per EN 10056-1: leg length 55 mm, thickness 6 mm, weight 5 kg/m, cross-section area 6.3 cm², moment of inertia Iy = 17.3 cm⁴, elastic section modulus Wel,y = 4.4 cm³.

Cross section · mm

55Leg a · mm

6Thickness t · mm

6.31Area A · cm²

5.00Mass G · kg/m

Geometry

Leg length a55.00 mm

Thickness t6.00 mm

Cross-section area A6.310 cm²

Centroid C_x=C_y15.6 mm

Weight G
steel 7850 kg/m³5.00kg/m

Section properties

Moment of inertia I_y=I_z17.290 cm⁴

Section modulus W_el4.388 cm³

Plastic modulus W_pl8.050 cm³

Radius of gyration i_y16.60 mm

Principal axes u–v

I_u27.440 cm⁴

I_v7.130 cm⁴

Reference

Profile standardEN 10056-1

EurocodeEN 1993-1-1 (EC3)

Check to EN 1993-1-1

Work out the utilisation of L 55×55/6 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/ 1.2 kN·m

Shear/ 50.1 kN

Compression/ 5.6 kN

Steelγ_M0γ_M1L_crmmkClass3

Resistances and factors

M_c,y,Rd / M_c,z,RdW_el1.2 kN·m / 1.2 kN·m

V_c,z,Rd / V_c,y,RdA_v = 316 mm²50.1 kN / 50.1 kN

N_pl,Rd / N_b,Rd173.5 kN / 5.6 kN

N_cr,y / N_cr,v14.3 kN / 5.9 kN

f_yEN 10025-2275 MPa

γ_M0 / γ_M11.00 / 1.00

Curve b · χ0.03

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.