This page provides a dimensional and CAD reference for the UB 914x305x313 universal beam. The source content below identifies the applicable European section reference, principal dimensions, sectional area, unit weight, and downloadable DWG resource.
Use the listed values when identifying the section or checking a drawing. The designation is a section name rather than a complete dimensional specification, so it should not replace verification of the depth, flange width, web thickness, flange thickness, and root fillet radius.
UB 914x305x313
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 : 932x309x21.1×34.5
Depth : 932 mm
Width : 309 mm
Web Thickness : 21.1 mm
Flange Thickness : 34.5 mm
Root Fillet Radius : 19 mm
Sectional Area : 398.4 cm2
Unit Weight : 312.7 kg/m
How to read the UB section information
In the displayed dimension string, the values correspond to the listed depth, width, web thickness, and flange thickness. Reading these fields separately helps prevent a nominal designation from being mistaken for the section’s exact geometry.
The sectional area describes the steel area in the cross-section. It is commonly relevant to section-property calculations and engineering checks. Unit weight is the mass per unit length and is useful for quantity takeoffs, shipping estimates, and model schedules. It should not be treated as a load capacity.
Designation and listed unit weight
The final part of the UB 914x305x313 designation is a section identifier, while the source data gives the listed unit weight as 312.7 kg/m. For calculations and schedules requiring the published linear mass, use the listed unit-weight field rather than assuming that every part of the designation is an exact measured value.
Root fillet and CAD geometry
The root fillet is the curved transition between the web and flange. This detail can matter when checking clearances, cope geometry, attached plates, weld access, and close-fitting connection components. A simplified beam outline may omit or idealize the curve, so confirm how it is represented in the DWG before relying on the file for detailed coordination.
Using the DWG in a drafting workflow
- Confirm the drawing units when the file is opened or inserted.
- Measure key geometry against the verified dimensions shown on this page.
- Review layers, linework, insertion point, and object type before incorporating the section into a project model.
- Check whether the root fillet is shown explicitly or represented by simplified geometry.
- Retain the full section designation in schedules and drawing notes to avoid confusion with similar universal beams.
The DWG is a drafting reference, not an automatic confirmation of structural adequacy, material grade, connection capacity, or suitability for a particular project. Those requirements must be checked against the governing design documents and applicable professional calculations.
Related reference topics
Useful companion topics include universal beam designation conventions, I-section terminology, sectional area, unit weight, root fillets, steel connection clearances, and the differences between European UB sections and United States W-shapes. Sections from different systems should not be treated as interchangeable solely because their overall depth, width, or mass appears similar.
Frequently asked questions
What does UB mean in this designation?
UB identifies the shape as a universal beam, an I-shaped hot-rolled steel section with a web between two flanges.
Are the designation numbers the exact section dimensions?
No. The designation identifies the section, while the exact reference geometry is provided by the separate dimensional fields. Use those listed fields for drawing checks and section identification.
Why does the listed unit weight differ from the final designation number?
The designation functions as a standardized section label. The source data lists the unit weight separately as 312.7 kg/m, which is the value to use when the published linear mass is required.
Can this UB section be replaced directly with a US W-shape?
Not without a detailed comparison. Shape families from different systems can differ in geometry, section properties, material requirements, tolerances, and availability. Any substitution requires verification of the relevant design and detailing criteria.
Is the DWG ready for fabrication?
Treat it as a reference resource until its units, geometry, layers, scale, and compatibility with the project requirements have been checked. Fabrication documents also require project-specific connections, tolerances, materials, and approvals.
