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Advisory Desk

AD 465: Amendment to clauses on negative tolerances on cambers in the National Structural Steelwork Specification

Engineers generally specify cambers on steel beams to reduce deflection under self-weight. However, when specifying cambers, they should carefully consider the …

AD 463: Corrections to BS 5950-5:1998

Although this Code of practice was withdrawn in 2010, many designers of cold formed thin gauge sections still use it to verify members. During the course of …

AD 461: Anchorage of bars in the troughs of composite slabs

IntroductionTraditional practice in the UK uses continuity over the supports, combined with a small contribution from the decking in the span, to provide …

AD 460: Amendment A2 to EN 1993-1-4

In February 2021, the second amendment to the 2006 version of the stainless steel Eurocode was published, EN 1993-1-4:2006+A2:2020. The amendment consists of …

AD 428A: Lateral and torsional vibration of half-through truss footbridges

Revision NoteThis AD note was first issued to provide interim guidance on the design of half-through footbridges. It has now been revised following publication …

AD 458: panel shear resistance

This AD relates to a bolted moment-resisting connection and the determination of the shear force in the column web panel, and in particular the selection of a …

AD 455: Design resistances for bespoke components in P358 (Green Book)

A reader has questioned the design resistances tabulated for bespoke components in P358 – the Green Book for nominally pinned joints to Eurocode 3. The …

AD 453: Accumulated deviations in erected steelwork

Questions about tolerances continue to arrive at SCI’s Advisory Desk – often concerning the potential to sum all the possible deviations to reach a …

AD450: Resistance of composite slabs to concentrated loads

EN 1994-1-1 clause 9.4.3 is entitled effective width of composite slabs under concentrated point and line loads. It has been the cause of much confusion, as …

AD 448: Support to profiled steel decking

It is now over ten years since the revised edition of P300 was published by SCI. This work, in collaboration with the Metal Cladding and Roofing …

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