The UB 406x178x54 is a Universal Beam reference entry for checking the profile geometry and published section data before drafting, estimating, or beginning a structural steel design review. The source values below identify the beam’s overall dimensions, web and flange thicknesses, root fillet radius, sectional area, and unit weight.
Use this page alongside related Universal Beam references, section-property explanations, and steel connection and detailing guidance. The downloadable DWG can support CAD coordination, but the profile should be checked against the project’s governing design information before it is used in fabrication or analysis.
UB 406x178x54
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 : 402.6×177.7×7.7×10.9
Depth : 402.6 mm
Width : 177.7 mm
Web Thickness : 7.7 mm
Flange Thickness : 10.9 mm
Root Fillet Radius : 10 mm
Sectional Area : 69 cm2
Unit Weight : 54.2 kg/m
How to read the UB 406x178x54 reference
The dimensional notation identifies the nominal beam designation, while the detailed dimension line gives the profile geometry used for technical reference. The listed depth and width describe the overall envelope of the section. Web thickness and flange thickness help distinguish the thin central web from the wider flange elements, and the root fillet radius describes the transition between those parts.
Sectional area and unit weight
The sectional area is a geometric property that can be used with other section data during engineering calculations and material takeoffs. The listed unit weight is useful for preliminary mass estimates, handling considerations, and coordination with schedules. Neither value, by itself, establishes the capacity of a member; design checks also depend on loading, restraint, steel grade, connection details, buckling behavior, and the applicable design rules.
Using the standard reference and CAD file
This entry identifies EN 10365:2017 as its reference for the beam dimensions, tolerances, and sectional properties. Treat the numeric block as the local authoritative source for this page. The accompanying DWG is intended as a drafting aid: confirm units, insertion scale, layer conventions, and project-specific detailing requirements before incorporating it into a drawing set.
Related steel reference topics
- Section properties: understand the geometric data commonly used in steel analysis.
- Steel section terminology: compare webs, flanges, fillets, depth, and width.
- Structural steel CAD and DWG resources: coordinate downloadable profile drawings.
- Steel member design concepts: review why geometry alone is not a complete design verification.
Frequently asked questions
What does UB 406x178x54 mean?
It is the designation used for this Universal Beam profile. The detailed source entry provides the corresponding dimensions and published section data, including the listed unit weight.
Which standard is referenced for this beam?
The page references EN 10365:2017 for the dimensions, tolerances, and sectional properties stated in the source content.
What information is provided for the profile?
The reference includes overall depth and width, web thickness, flange thickness, root fillet radius, sectional area, and unit weight. These values should be read directly from the preserved source block.
Can I use the DWG directly for fabrication?
The DWG is a CAD reference file, not a substitute for project drawings, fabrication requirements, or engineering verification. Check its scale and geometry against the approved project information before use.
