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UBP 305x305x79

Production class: hot rolled (EN 10365)

Section geometry

UBP shape
Height (h):
299.3mm
Width (b):
306.4mm
Web thickness (tw):
11mm
Flange thickness (tf):
11.1mm
Radius (r):
20mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
1.669E8
Z-axis:
5.328E7
Elastic section modulus (Wel):mm³
Y-axis:
1.115E6
Z-axis:
3.478E5
Plastic section modulus (Wpl):mm³
Y-axis:
1.237E6
Z-axis:
5.328E5
Radius of gyration (i):mm
Y-axis:
127
Z-axis:
72
Plastic shear area (Av):mm²
Y-axis:
6802
Z-axis:
3957
Weight per meter:
78.9kg/m
Area (A):
10050mm²
Surface area per meter:
1.768m²/m
Torsion constant (It):
5.215E5mm⁴
Warping constant (Iw):
1.105E12mm⁶

Profile overview for UBP 305x305x79

The UBP 305x305x79 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 299.3 mm and a flange width (b) of 306.4 mm, supported by a 11 mm thick web and 11.1 mm thick flanges. With a cross-sectional area of 10050 mm² and a linear mass of 78.9 kg/m, the UBP 305x305x79 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 166900000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 1237000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 53280000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the UBP 305x305x79 provides a y-axis shear area (at strong bending axis) of 6802.08 mm² for web shear verification and a torsion constant of 521500 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 1105000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.