The UB 406x140x53 is a Universal Beam reference for identifying a hot-rolled structural steel section. This page brings together its published dimensions, section terminology, standard reference, and CAD download in one place.
Use the dimensional information below when checking drawings, comparing section designations, or coordinating steelwork details. For design work, confirm the governing material specification, section properties, loading, restraint, and connection requirements with the applicable project documentation and a qualified engineer.
UB 406x140x53
Universal Beams
refer to : EN 10365:2017
a European standard that defines the dimensions, tolerances, and sectional properties for hot-rolled steel channels, I-beams, and H-beams used in construction and engineering. It ensures uniformity and compatibility across European structural steel products.
Dimension : 406.6×143.3×7.9×12.9
Depth : 406.6 mm
Width : 143.3 mm
Web Thickness : 7.9 mm
Flange Thickness : 12.9 mm
Root Fillet Radius : 10 mm
Sectional Area : 68 cm2
Unit Weight : 53.4 kg/m
Understanding the UB 406x140x53 designation
“UB” identifies the Universal Beam family. The designation shown in the source content is the section reference used to distinguish this beam from other rolled profiles. The published dimension string provides the section depth, width, web thickness, and flange thickness in that order.
How to read the section dimensions
- Depth: the overall vertical size of the beam section.
- Width: the overall flange-to-flange width.
- Web thickness: the thickness of the central vertical web.
- Flange thickness: the thickness of the horizontal flange material.
- Root fillet radius: the curved transition between the web and flange, which is important when checking clearances, fittings, and detailing interfaces.
Sectional area and unit weight
The listed sectional area describes the amount of steel in a cross-section and is used in section-property calculations and quantity checks. The listed unit weight expresses the mass of the beam per unit length. These values are useful for estimating steel quantities and reviewing fabrication or transport information, but they do not by themselves establish structural capacity.
Standard reference and CAD use
The source refers to EN 10365:2017, which provides a standardized basis for dimensions, tolerances, and sectional properties for rolled steel sections. When using this reference in a drawing or model, check the project’s required steel grade, tolerances, connection details, and local design rules separately.
A DWG file is provided with this page for drafting and coordination. Treat downloaded geometry as a reference and verify critical interfaces against the authoritative project information. Related SteelSTD references on steel section properties, structural steel terminology, and connection detailing can help place this beam in a broader design workflow.
Frequently asked questions
What does UB mean?
UB means Universal Beam, a family of hot-rolled structural steel sections with a web and opposing flanges.
What do the four values in the dimension string represent?
For this page, the dimension string identifies the beam depth, beam width, web thickness, and flange thickness, respectively.
What is the purpose of the root fillet?
The root fillet is the curved transition between the web and flange. It affects detailing clearances and should be considered when connecting components or checking fit-up.
Does the unit weight determine the beam’s structural capacity?
No. Unit weight describes mass per unit length. Structural capacity also depends on section properties, material, loading, restraint, buckling behavior, and connection design.
Can the DWG file be used directly for fabrication?
The DWG is a drafting and coordination reference. Confirm dimensions, tolerances, material requirements, connections, and project-specific revisions before using geometry for fabrication or construction.
What standard is referenced for this beam?
The source content refers to EN 10365:2017 for the standardized dimensions, tolerances, and sectional-property information associated with rolled steel sections.
