The UB 406x178x67 is a Universal Beam reference for identifying the section dimensions and basic properties used in structural steel documentation. This page brings together the designation, dimensional description, sectional area, unit weight, standard reference, and CAD download in one place.
Use the dimensional entries when checking drawings, schedules, or section selections. For broader terminology, see related guidance on Universal Beam sections, steel section properties, and structural steel detailing.
UB 406x178x67
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 : 409.4×178.8×8.8×14.3
Depth : 409.4 mm
Width : 178.8 mm
Web Thickness : 8.8 mm
Flange Thickness : 14.3 mm
Root Fillet Radius : 10 mm
Sectional Area : 85.5 cm2
Unit Weight : 67.1 kg/m
How to read the UB 406x178x67 reference
The designation identifies a Universal Beam section. The listed dimension string describes the section’s overall depth and width together with its web and flange thicknesses. These values help drafters and engineers distinguish this section from other UB sizes during drawing review and steelwork documentation.
What the listed properties mean
- Depth and width: These describe the principal outside dimensions of the steel section and are commonly used for coordination with connections, clearances, and framing layouts.
- Web and flange thickness: These identify the thickness of the central web and the projecting flanges. They are important inputs when reviewing detailing, fabrication information, and section-property data.
- Root fillet radius: The fillet is the curved transition between the web and flange. It affects the true profile geometry and should be considered when detailing interfaces near the section root.
- Sectional area: This is the cross-sectional steel area reported for the section. It supports quantity checks and forms part of the information used in structural calculations.
- Unit weight: This indicates the mass per unit length shown in the reference and can support preliminary material takeoffs. It should not be treated as a complete design check.
Standard and CAD reference
The page identifies EN 10365:2017 as the referenced European standard for the listed rolled-section information. The attached DWG resource can support drafting and coordination workflows, but users should confirm units, layer conventions, and project-specific drawing requirements before incorporating downloaded geometry into a production file.
The listed section properties describe the reference profile; they do not by themselves establish resistance, allowable load, connection capacity, or suitability for a particular structure. Those decisions require the applicable design basis and engineering verification.
Frequently asked questions
What does UB mean?
UB means Universal Beam, a designation used for a family of rolled steel beam sections.
What does the dimension string represent?
It summarizes the section geometry by listing the overall depth, overall width, web thickness, and flange thickness in that order as presented in the reference.
Why is the root fillet radius listed?
The root fillet describes the curved transition between the web and flange. It is useful when checking detailed geometry, clearances, and interfaces that approach the inside corner of the section.
Can the DWG file be used directly for structural design?
The DWG file is a drafting reference. It should be checked against the project’s units and detailing requirements, and it does not replace engineering verification of the member or its connections.
