Classification of cross-sections (BS EN 1993-1-1:2022)

Steel Construction Institute, 2023
Classification of cross-sections (BS EN 1993-1-1:2022) Download document

Document Status

Current

Supplement

Civil & Structural Supplement

Abstract

This publication explains the classification of cross-sections based on their susceptibility to local buckling, primarily determined by the width-to-thickness ratio (c/t) for plated elements and the equivalent diameter-to-thickness ratio (de/t) for circular and elliptical hollow sections, with factors such as material strength and stress systems also playing a role. BS EN 1993‐1‐1:2022 specifies the maximum ratios for Class 1, 2, and 3 cross-sections, with angles limited to Class 3 and sections exceeding these limits classified as Class 4.

History

Also referred to as Eurocode second generation advice for designers 05 V01. September 2023 edition.

Subjects

  • Steel building systems/frame
  • Steel
  • Building systems/frame
  • Building structure
  • Materials
  • Metal sections/other items

Publisher History

With over 30 years experience, the Steel Construction Institute provide technical expertise and best practice to the steel construction sector.

Information

NBS

NBS has produced specification systems and information products for construction industry professionals for more than 40 years. The National Building Specification is the recognised UK national standard and is used by over 5,000 organisations. NBS is part of RIBA Enterprises Ltd.

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