Vertical shear resistance of composite slabs and anchorage

Advisory Desk Note 540

Steel Construction Institute, 2025
Vertical shear resistance of composite slabs and anchorage Download document

Document Status

Current

Supplement

Civil & Structural Supplement

Series

Advisory Desk Note

Abstract

This SCI Advisory Note discusses the vertical shear resistance in composite slabs, particularly in scenarios where heavy concentrated loads near supports may render vertical shear critical. It clarifies that while traditional designs assumed sufficient anchorage of steel sheeting and reinforcement, such assumptions may not always hold. The note outlines how vertical shear resistance is calculated per BS EN 1994-1-1 and EN 1992-1-1, focusing on the effective contribution of anchored tensile reinforcement. It also highlights how second-generation Eurocode 4 provisions account for additional resistance from steel sheeting, including shear buckling and web crushing, even when anchorage is limited—ultimately supporting the continued validity of current design assumptions.

History

March 2025 edition.

Subjects

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

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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