Back to All Sections

UB 1100x400x433

Production class: hot rolled (EN 10365)

Section geometry

UB shape
Height (h):
1108mm
Width (b):
402mm
Web thickness (tw):
22mm
Flange thickness (tf):
40mm
Radius (r):
30mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
1.137E10
Z-axis:
4.342E8
Elastic section modulus (Wel):mm³
Y-axis:
2.051E7
Z-axis:
2.160E6
Plastic section modulus (Wpl):mm³
Y-axis:
2.337E7
Z-axis:
3.370E6
Radius of gyration (i):mm
Y-axis:
452
Z-axis:
88
Plastic shear area (Av):mm²
Y-axis:
32160
Z-axis:
26660
Weight per meter:
433kg/m
Area (A):
55120mm²
Surface area per meter:
3.728m²/m
Torsion constant (It):
2.229E7mm⁴
Warping constant (Iw):
1.235E14mm⁶

Profile overview for UB 1100x400x433

The UB 1100x400x433 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 1108 mm and a flange width (b) of 402 mm, supported by a 22 mm thick web and 40 mm thick flanges. With a cross-sectional area of 55120 mm² and a linear mass of 433 kg/m, the UB 1100x400x433 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 11365400000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 23370000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 434200000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the UB 1100x400x433 provides a y-axis shear area (at strong bending axis) of 32160 mm² for web shear verification and a torsion constant of 22290000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 123500000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.