RSJ Load and Span Tables: How to Read Their Assumptions

Distinguish product properties from design tables and check section family, jurisdiction, restraint, load definitions and table footnotes.

RSJ Load and Span Tables: How to Read Their Assumptions

There is no universal load-span table covering every UK and European beam. A UB designation, an IPE designation and a historic RSJ label describe different product families. Earlier numerical tables without a traceable design basis have been withdrawn from this page.

Product data and design tables answer different questions

A product table lists geometry, mass and section properties. A design table reports resistance or permitted loading under stated conditions. Confusing the two can turn a correct dimension into an unsupported safety claim.

Our shared reference reproduces selected geometry and inertia from British Steel’s UB datasheet. It does not cover IPE or HE sections and does not permit substituting a similar-depth European section.

Information to retain with a load table

ItemWhy it matters
Exact section and steel gradeSimilar labels can refer to different geometry and resistance
Support and lateral restraintRestraint assumptions affect stability
Span definitionClear opening and support-centre span are different measurements
Loading pattern and unitsA point force is not a full-span line load
Design basis and combinationsService loads cannot be compared indiscriminately with design resistance
Deflection criterionMovement criteria depend on the supported construction

Keep the table’s footnotes with any excerpt. A cropped screenshot containing just a row and a span can omit the conditions that make the result meaningful.

Cross-border projects

Identify the building’s jurisdiction separately from the supplier’s country. Product availability does not establish compliance with local building requirements. Approved Document A is guidance for England; it is not one set of rules for every UK or European project.

Structural work requires a chartered structural engineer and the applicable Building Control approval. This educational article has not received an independent engineering review.

About Krystian Welcel

Publisher & Developer

Krystian Welcel publishes RSJ.info and develops its web tools. His background is in software development. The site's construction guides and calculators are educational resources, not professional structural designs.

RSJ.info is an independent editorial site. Our guides and calculators are for planning only and do not replace advice from a chartered structural engineer or Building Control approval. About the publisher · LinkedIn profile