Provision of information. Joint forces

Advisory Desk Note 538

Steel Construction Institute, 2025
Provision of information. Joint forces Download document

Document Status

Current

Supplement

Civil & Structural Supplement

Series

Advisory Desk Note

Abstract

This SCI Advisory Note (AD 538) provides clarification on the provision of joint design information from structural engineers to steelwork contractors. It emphasises that forces, moments, and their combinations must be clearly communicated, preferably as factored design values on drawings, to ensure accurate and safe connection detailing. The note reinforces that for nominally pinned joints, tying forces should be supplied separately and warns that significant axial forces may invalidate "pinned" assumptions. It highlights the importance of force equilibrium in complex joints and encourages early collaboration between engineers and contractors to understand joint behaviour and define critical load cases.

History

January 2025 edition.

Subjects

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

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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