UB 1000x400x554 is a hot-rolled universal beam designation referenced to EN 10365:2017. This page provides the published metric dimensions, sectional area, unit weight, and a DWG resource for steel detailing and reference workflows.
Because the section follows a European designation system, users working primarily with American W-shapes should not assume that it has a direct U.S. equivalent. Compare the complete geometry and required section properties before selecting or substituting a steel shape.
UB 1000x400x554
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 : 1032x408x29.5×52
Depth : 1032 mm
Width : 408 mm
Web Thickness : 29.5 mm
Flange Thickness : 52 mm
Root Fillet Radius : 30 mm
Sectional Area : 705.8 cm2
Unit Weight : 554.1 kg/m
Understanding the UB 1000x400x554 designation
The UB prefix identifies the member as a universal beam. The designation is a convenient section label, while the individual values in the source content provide the dimensions that should be used for checking the profile. For this section, the listed depth is 1032 mm, the width is 408 mm, the web thickness is 29.5 mm, and the flange thickness is 52 mm.
The compact dimension string presents the same principal geometry in a drafting-friendly format. When interpreting any abbreviated section notation, confirm the order of the values against the separately labeled depth, width, web thickness, and flange thickness rather than relying on the designation alone.
Section geometry and properties
- Depth: The overall vertical dimension of the beam cross-section.
- Width: The overall flange width shown across the section.
- Web thickness: The thickness of the central vertical element connecting the flanges.
- Flange thickness: The thickness of the upper and lower flange elements.
- Root fillet radius: The curved transition where the web meets a flange. This feature matters when checking clearances for plates, bolts, weld access, and fitted components.
- Sectional area: The cross-sectional steel area used in weight and section-property calculations.
- Unit weight: The listed mass per unit length, useful for material schedules, estimating, handling studies, and model checks.
Using the DWG in a detailing workflow
The downloadable DWG can support profile layouts, section views, coordination drawings, and preliminary detailing. Before incorporating it into a project model, confirm the drawing units and compare the CAD geometry with the dimensions stated on this page.
Pay particular attention to the flange-to-web transitions. A simplified CAD outline may not always communicate every rolling feature or fabrication consideration. Connection plates, stiffeners, copes, welds, and bolt layouts should be developed from the applicable design requirements and verified by the responsible project professional.
Working with European and U.S. shape references
A universal beam and a U.S. W-shape may share a broadly similar I-shaped form, but their designation systems and available geometries are not interchangeable. A substitution review should compare overall dimensions, thicknesses, fillet geometry, mass, material requirements, and all section properties relevant to the design.
Related reference topics include universal beam dimensions, I-shape terminology, steel section properties, unit weight concepts, root fillets, connection detailing, and CAD file verification.
Frequently asked questions
What does UB mean in this section name?
UB means universal beam. It identifies a hot-rolled, I-shaped structural steel section within the referenced European shape system.
What does the dimension string represent?
On this page, the string corresponds to the listed depth, width, web thickness, and flange thickness. The separately labeled values should be used to confirm how the abbreviated notation is being interpreted.
Why is the root fillet radius important?
The root fillet is the curved region between the web and flange. Plates, welds, bolts, and fitted connection components may require clearance from this curved transition.
Is the listed unit weight the same as total beam weight?
No. The listed value is mass per unit length. The total mass of a member depends on its actual length and any fabrication changes or attached components.
Can this universal beam replace a U.S. W-shape?
Not by designation alone. The geometry, section properties, material requirements, availability, and project criteria must be compared before a substitution is accepted.
What should be checked before using the DWG?
Confirm the drawing units, scale, profile dimensions, layer organization, and flange-to-web geometry. The file should also be reviewed against the project drawings and applicable engineering requirements.
