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Atmospheric corrosivity classifications for weathering steel

Weathering steel has an increased resistance to atmospheric corrosion, compared to conventional steel, and a distinctive appearance which make it attractive …

AD 520: Amendment to Table 8 in the MPS-Bolts (issue 14)

The BCSA has reviewed the requirements for impact test for machined test pieces in Table 8 of the Model specification for the purchase of structural bolting …

New and revised codes and standards: From BSI Updates January 2024

BS EN PUBLICATIONS BS EN 1991-2:2023Eurocode 1. Actions on structures. Traffic loads on bridges and other civil engineering workssupersedes BS EN 1991-2:2003 …

Reaching for the asymptote – what is an optimal design?

Greatly simplifying the complex subject of structural design, one would imagine that an optimally designed element, or structure, would achieve unity factors …

AD 519: Equivalent horizontal forces and combinations of actions

Recent questions to SCI’s Advisory Desk have shown that some designers are unclear whether equivalent horizontal forces (EHFs) should be applied to a …

New and revised codes and standards – from BSI Updates November and December 2023New and revised codes and standards –

BS EN PUBLICATIONS BS EN 1990:2023Eurocode. Basis of structural and geotechnical designsupersedes BS EN 1990:2002+A1:2005 and BS EN 1997-1:2004+A1:2013, which …

Structural modelling for analysis: Section 7 in BS EN 1993-1-1:2022

The updated version of EN 1993-1-1, BS EN 1993-1-1:2022, has been finalized and is being considered by the team draughting the UK National Annex. Adoption of …

AD 517: Heavy concentrated loads on composite slabs

This note revisits the subject of concentrated loads on composite slabs. Earlier notes AD450 and AD477 considered how to design the slab, and particularly the …

New and revised codes and standards: from BSI Updates October 2023

BS EN PUBLICATIONS BS EN 1990:2023Eurocode. Basis of structural and geotechnical designsupersedes BS EN 1990:2002+A1:2005 and BS EN 1997-1:2004+A1:2013 BS EN …

Better can sometimes be worse – the dangers of over-strength

As engineers we are always concerned with strength – do we have enough resistance to cope with ultimate (ULS) levels of load? We then consider stiffness – …

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