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UB 838x292x251

Production class: hot rolled (EN 10365)

Section geometry

UB shape
Height (h):
859mm
Width (b):
292mm
Web thickness (tw):
17mm
Flange thickness (tf):
31mm
Radius (r):
20mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
3.875E9
Z-axis:
1.290E8
Elastic section modulus (Wel):mm³
Y-axis:
9.021E6
Z-axis:
8.837E5
Plastic section modulus (Wpl):mm³
Y-axis:
1.032E7
Z-axis:
1.383E6
Radius of gyration (i):mm
Y-axis:
348
Z-axis:
63
Plastic shear area (Av):mm²
Y-axis:
18104
Z-axis:
15650
Weight per meter:
251kg/m
Area (A):
32000mm²
Surface area per meter:
2.818m²/m
Torsion constant (It):
7.455E6mm⁴
Warping constant (Iw):
2.204E13mm⁶

Profile overview for UB 838x292x251

The UB 838x292x251 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 859 mm and a flange width (b) of 292 mm, supported by a 17 mm thick web and 31 mm thick flanges. With a cross-sectional area of 32000 mm² and a linear mass of 251 kg/m, the UB 838x292x251 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 3874900000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 10320000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 129000000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the UB 838x292x251 provides a y-axis shear area (at strong bending axis) of 18104 mm² for web shear verification and a torsion constant of 7455000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 22040000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.