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UB 356x171x57

Production class: hot rolled (EN 10365)

Section geometry

UB shape
Height (h):
358mm
Width (b):
172.2mm
Web thickness (tw):
8.1mm
Flange thickness (tf):
13mm
Radius (r):
10mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
1.602E8
Z-axis:
1.108E7
Elastic section modulus (Wel):mm³
Y-axis:
8.954E5
Z-axis:
1.287E5
Plastic section modulus (Wpl):mm³
Y-axis:
1.009E6
Z-axis:
1.987E5
Radius of gyration (i):mm
Y-axis:
148
Z-axis:
39
Plastic shear area (Av):mm²
Y-axis:
4477
Z-axis:
3140
Weight per meter:
57kg/m
Area (A):
7260mm²
Surface area per meter:
1.371m²/m
Torsion constant (It):
3.327E5mm⁴
Warping constant (Iw):
3.292E11mm⁶

Profile overview for UB 356x171x57

The UB 356x171x57 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 358 mm and a flange width (b) of 172.2 mm, supported by a 8.1 mm thick web and 13 mm thick flanges. With a cross-sectional area of 7260 mm² and a linear mass of 57 kg/m, the UB 356x171x57 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 160200000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 1009000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 11080000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the UB 356x171x57 provides a y-axis shear area (at strong bending axis) of 4477.2 mm² for web shear verification and a torsion constant of 332700 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 329200000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.