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UBP 305x305x149

Production class: hot rolled (EN 10365)

Section geometry

UBP shape
Height (h):
318.5mm
Width (b):
316mm
Web thickness (tw):
20.6mm
Flange thickness (tf):
20.7mm
Radius (r):
20mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
3.332E8
Z-axis:
1.091E8
Elastic section modulus (Wel):mm³
Y-axis:
2.092E6
Z-axis:
6.907E5
Plastic section modulus (Wpl):mm³
Y-axis:
2.389E6
Z-axis:
1.067E6
Radius of gyration (i):mm
Y-axis:
131
Z-axis:
75
Plastic shear area (Av):mm²
Y-axis:
13080
Z-axis:
7306
Weight per meter:
149kg/m
Area (A):
18990mm²
Surface area per meter:
1.825m²/m
Torsion constant (It):
3.103E6mm⁴
Warping constant (Iw):
2.413E12mm⁶

Profile overview for UBP 305x305x149

The UBP 305x305x149 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 318.5 mm and a flange width (b) of 316 mm, supported by a 20.6 mm thick web and 20.7 mm thick flanges. With a cross-sectional area of 18990 mm² and a linear mass of 149 kg/m, the UBP 305x305x149 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 333200000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 2389000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 109100000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the UBP 305x305x149 provides a y-axis shear area (at strong bending axis) of 13082.4 mm² for web shear verification and a torsion constant of 3103000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 2413000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.