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UB 254x146x31

Production class: hot rolled (EN 10365)

Section geometry

UB shape
Height (h):
251.4mm
Width (b):
146.1mm
Web thickness (tw):
6mm
Flange thickness (tf):
8.6mm
Radius (r):
8mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
4.420E7
Z-axis:
4.475E6
Elastic section modulus (Wel):mm³
Y-axis:
3.516E5
Z-axis:
61260
Plastic section modulus (Wpl):mm³
Y-axis:
3.936E5
Z-axis:
94150
Radius of gyration (i):mm
Y-axis:
105
Z-axis:
33
Plastic shear area (Av):mm²
Y-axis:
2513
Z-axis:
1649
Weight per meter:
31.1kg/m
Area (A):
3970mm²
Surface area per meter:
1.061m²/m
Torsion constant (It):
86290mm⁴
Warping constant (Iw):
6.587E10mm⁶

Profile overview for UB 254x146x31

The UB 254x146x31 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 251.4 mm and a flange width (b) of 146.1 mm, supported by a 6 mm thick web and 8.6 mm thick flanges. With a cross-sectional area of 3970 mm² and a linear mass of 31.1 kg/m, the UB 254x146x31 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 (Iy) of 44200000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 393600 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 4475000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the UB 254x146x31 provides a y-axis shear area (at strong bending axis) of 2512.92 mm² for web shear verification and a torsion constant of 86290 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 65870000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.