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UC 305x305x129

Production class: hot rolled (EN 10365)

Section geometry

UC shape
Height (h):
318mm
Width (b):
308mm
Web thickness (tw):
13.1mm
Flange thickness (tf):
20.6mm
Radius (r):
20mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
3.103E8
Z-axis:
1.004E8
Elastic section modulus (Wel):mm³
Y-axis:
1.951E6
Z-axis:
6.520E5
Plastic section modulus (Wpl):mm³
Y-axis:
2.183E6
Z-axis:
9.927E5
Radius of gyration (i):mm
Y-axis:
136
Z-axis:
77
Plastic shear area (Av):mm²
Y-axis:
12690
Z-axis:
5063
Weight per meter:
129kg/m
Area (A):
16660mm²
Surface area per meter:
1.807m²/m
Torsion constant (It):
2.244E6mm⁴
Warping constant (Iw):
2.218E12mm⁶

Profile overview for UC 305x305x129

The UC 305x305x129 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 318 mm and a flange width (b) of 308 mm, supported by a 13.1 mm thick web and 20.6 mm thick flanges. With a cross-sectional area of 16660 mm² and a linear mass of 129 kg/m, the UC 305x305x129 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 310300000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 2183000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 100400000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the UC 305x305x129 provides a y-axis shear area (at strong bending axis) of 12689.6 mm² for web shear verification and a torsion constant of 2244000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 2218000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.