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UB 690x360x265

Production class: hot rolled (EN 10365)

Section geometry

UB shape
Height (h):
706mm
Width (b):
358mm
Web thickness (tw):
18.4mm
Flange thickness (tf):
30.2mm
Radius (r):
20mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
2.918E9
Z-axis:
2.313E8
Elastic section modulus (Wel):mm³
Y-axis:
8.266E6
Z-axis:
1.292E6
Plastic section modulus (Wpl):mm³
Y-axis:
9.333E6
Z-axis:
1.994E6
Radius of gyration (i):mm
Y-axis:
293
Z-axis:
82
Plastic shear area (Av):mm²
Y-axis:
21620
Z-axis:
13980
Weight per meter:
265kg/m
Area (A):
33850mm²
Surface area per meter:
2.773m²/m
Torsion constant (It):
8.337E6mm⁴
Warping constant (Iw):
2.636E13mm⁶

Profile overview for UB 690x360x265

The UB 690x360x265 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 706 mm and a flange width (b) of 358 mm, supported by a 18.4 mm thick web and 30.2 mm thick flanges. With a cross-sectional area of 33845.6 mm² and a linear mass of 265 kg/m, the UB 690x360x265 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 2917900000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 9333000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 231300000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the UB 690x360x265 provides a y-axis shear area (at strong bending axis) of 21623.2 mm² for web shear verification and a torsion constant of 8337000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 26360000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.