UB 178x102x19

Production class: hot rolled (EN 10365)

Section geometry

Height (h):

177.8mm

Width (b):

101.2mm

Web thickness (t_w):

4.8mm

Flange thickness (t_f):

7.9mm

Radius (r):

8mm

Section properties

Moment of inertia (I):mm⁴

Y-axis:

1.359E7

Z-axis:

1.367E6

Elastic section modulus (W_el):mm³

Y-axis:

1.528E5

Z-axis:

27020

Plastic section modulus (W_pl):mm³

Y-axis:

1.716E5

Z-axis:

41610

Radius of gyration (i):mm

Y-axis:

Z-axis:

Plastic shear area (A_v):mm²

Y-axis:

1599

Z-axis:

996.8

Weight per meter:

19kg/m

Area (A):

2430mm²

Surface area per meter:

0.737m²/m

Torsion constant (I_t):

44710mm⁴

Warping constant (I_w):

9.847E9mm⁶

Profile overview for UB 178x102x19

The UB 178x102x19 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 177.8 mm and a flange width (b) of 101.2 mm, supported by a 4.8 mm thick web and 7.9 mm thick flanges. With a cross-sectional area of 2430 mm² and a linear mass of 19 kg/m, the UB 178x102x19 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 (I_y) of 13590000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 171600 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (I_z) provides 1367000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the UB 178x102x19 provides a y-axis shear area (at strong bending axis) of 1598.96 mm² for web shear verification and a torsion constant of 44710 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 9847000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.