UPN 280

Production class: hot rolled (EN 10365)

Section geometry

Height (h):

280mm

Width (b):

95mm

Web thickness (t_w):

10mm

Flange thickness (t_f):

15mm

Radius (r):

15mm

Radius 2 (r₂):

7.5mm

Distance edge to centroid (y_s):

25.3mm

Distance shear center to centroid (y_m):

50.2mm

Distance end to measure point (u):

47.5mm

Flange slope:

Section properties

Moment of inertia (I):mm⁴

Y-axis:

6.280E7

Z-axis:

3.990E6

Elastic section modulus (W_el):mm³

Y-axis:

4.480E5

Z-axis:

57200

Plastic section modulus (W_pl):mm³

Y-axis:

5.320E5

Z-axis:

1.090E5

Radius of gyration (i):mm

Y-axis:

109

Z-axis:

27.4

Plastic shear area (A_v):mm²

Y-axis:

2850

Z-axis:

2930

Weight per meter:

41.8kg/m

Area (A):

5330mm²

Surface area per meter:

0.89m²/m

Torsion constant (I_t):

3.100E5mm⁴

Warping constant (I_w):

4.850E10mm⁶

Profile overview for UPN 280

The UPN 280 is a structural steel cross-section utilized in commercial construction, industrial framing, and mechanical engineering. Manufactured as a hot rolled section, it complies with EN 10365 dimensional standards, ensuring predictability in detailing and fabrication.Access to its exact geometric and statical properties is essential for 3D modeling and structural verification.

Geometry: This open profile features a total depth (h) of 280 mm and a flange width (b) of 95 mm, supported by a 10 mm thick web and 15 mm thick flanges. With a cross-sectional area of 5330 mm² and a linear mass of 41.8 kg/m, the UPN 280 offers a distinct stiffness-to-weight ratio for both column (axial) and beam applications.

Section properties: For design of bending, the major and minor axis properties dictate the member's structural capacity. The strong-axis moment of inertia (I_y) of 62800000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 532000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (I_z) provides 3990000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the UPN 280 provides a y-axis shear area (at strong bending axis) of 2850 mm² for web shear verification and a torsion constant of 310000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 48500000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.