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Calculation of αcr for unbraced frames

In this article, Dr. Yigit Ozcelik of the Steel Construction Institute (SCI) presents a simple yet efficient hand method to estimate the global stability …

AD 544: Washers for preloaded bolting assemblies

The SCI Advisory Desk sometimes receives questions about washers for preloaded bolting assemblies. When preloaded bolts are tightened and unhardened washers …

New and revised codes and standards from BSI updates May 2025

BRITISH STANDARDS PUBLISHED BS 4483:2025Steel fabric for the reinforcement of concrete. Specification. BS EN 10025-3:2019Hot rolled products of structural …

AD 543: Deflection of composite slabs

Occasionally, SCI’s advisory desk is asked about the simplified rules for controlling the deflection of steel-concrete composite slabs by limiting their …

Fire protection guidance from ASFP

The Association for Specialist Fire Protection (ASFP) has recently published the 6th Edition of the ‘Yellow Book’, Volume 1. David Brown of the Steel …

New and revised codes and standards: from BSI Updates April 2025

BRITISH STANDARDS PUBLISHED NA TO BS EN 1997-2:2024Eurocode 7. Geotechnical design. Ground properties.supersedes NA to BS EN 1997-2:2007 BRITISH STANDARDS …

What’s changing in the updated FprEN 1993 Eurocode 3 – Design of Steel Structures?

A European Design Standard, with country specific annexes and design guides Eurocode 3 provides both general and structure specific recommendations for the …

Design at elevated temperatures – unrestrained beams

Previous articles on the design of members at elevated temperatures covered restrained beams and columns. This third article in the series by David Brown of …

AD 541: Imposed roof loads in combination with PV

Photovoltaic arrays (PV) are becoming common on roofs. They’re increasingly being added to new structures and retrofitted to existing ones. The UK National …

New and revised codes and standards: from BSI Updates March 2025

BS EN PUBLICATIONS BS EN ISO 19650-6:2025Organization and digitization of information about buildings and civil engineering works, including building …

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