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UB 690x360x323

Production class: hot rolled (EN 10365)

Section geometry

UB shape
Height (h):
722mm
Width (b):
359mm
Web thickness (tw):
21.1mm
Flange thickness (tf):
38.1mm
Radius (r):
20mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
3.710E9
Z-axis:
2.943E8
Elastic section modulus (Wel):mm³
Y-axis:
1.027E7
Z-axis:
1.640E6
Plastic section modulus (Wpl):mm³
Y-axis:
1.166E7
Z-axis:
2.532E6
Radius of gyration (i):mm
Y-axis:
299
Z-axis:
84
Plastic shear area (Av):mm²
Y-axis:
27360
Z-axis:
16290
Weight per meter:
323kg/m
Area (A):
41330mm²
Surface area per meter:
2.803m²/m
Torsion constant (It):
1.567E7mm⁴
Warping constant (Iw):
3.435E13mm⁶

Profile overview for UB 690x360x323

The UB 690x360x323 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 722 mm and a flange width (b) of 359 mm, supported by a 21.1 mm thick web and 38.1 mm thick flanges. With a cross-sectional area of 41325.54 mm² and a linear mass of 323 kg/m, the UB 690x360x323 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 3710400000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 11660000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 294300000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the UB 690x360x323 provides a y-axis shear area (at strong bending axis) of 27355.8 mm² for web shear verification and a torsion constant of 15670000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 34350000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.