Back to All Sections

UC 305x305x143

Production class: hot rolled (EN 10365)

Section geometry

UC shape
Height (h):
323mm
Width (b):
309mm
Web thickness (tw):
14mm
Flange thickness (tf):
22.9mm
Radius (r):
20mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
3.502E8
Z-axis:
1.127E8
Elastic section modulus (Wel):mm³
Y-axis:
2.168E6
Z-axis:
7.295E5
Plastic section modulus (Wpl):mm³
Y-axis:
2.438E6
Z-axis:
1.110E6
Radius of gyration (i):mm
Y-axis:
138
Z-axis:
78
Plastic shear area (Av):mm²
Y-axis:
14150
Z-axis:
5460
Weight per meter:
143kg/m
Area (A):
18380mm²
Surface area per meter:
1.82m²/m
Torsion constant (It):
3.001E6mm⁴
Warping constant (Iw):
2.535E12mm⁶

Profile overview for UC 305x305x143

The UC 305x305x143 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 323 mm and a flange width (b) of 309 mm, supported by a 14 mm thick web and 22.9 mm thick flanges. With a cross-sectional area of 18380 mm² and a linear mass of 143 kg/m, the UC 305x305x143 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 350200000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 2438000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 112700000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the UC 305x305x143 provides a y-axis shear area (at strong bending axis) of 14152.2 mm² for web shear verification and a torsion constant of 3001000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 2535000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.