Technical
Rafter stiffeners – needed or not?
Zealous application of the rules in EN 1993-1-8 has resulted in stiffeners being provided in rafters at the “sharp end” of portal frame haunches – where …
AD 504: Web to flange welds in box sections subject to bending and torsion
SCI has recently been asked about sizing welds between webs and flanges of a fabricated box section subject to applied torsion and bending. This AD note gives …
New and revised codes and standards: from BSI updates March 2023
BS EN PUBLICATIONS BS EN ISO 5173:2023Destructive tests on welds in metallic materials. Bend testsno current standard is superseded BRITISH STANDARDS REVIEWED …
The ever changing moods of composite slabs
There has been significant interest recently in the vertical shear resistance of composite slabs. This is partly due to different values offered by …
AD 502: Design to BS 5950 and other standards
The Advisory Desk is regularly asked whether it is acceptable to carry out structural designs to standards other than the Eurocodes. This note draws attention …
New and revised codes and standards: from BSI Updates February 2023
BS EN PUBLICATIONS BS EN 17632-1:2022Building information modelling (BIM). Semantic modelling and linking (SML). Generic modelling patternsno current standard …
Use of fibre-reinforced concrete in composite slabs (part 2)
Recent years have seen increasing interest in replacing the reinforcement mesh with steel fibres in composite slabs on steel decking. The drivers are largely …
AD 500: Tolerance at cantilever tips
Although BS EN 1090-2 and the National Structural Steelwork Specification (NSSS 7th) include a permitted deviation at the tip of a pre-set cantilever, this AD …
A milestone in advisory desk notes
The issue of AD 500 marks a significant achievement in the provision of technical advice to the steel construction industry. Advice was issued from 1988 within …
New and revised codes and standards – from BSI Updates January 2023
BS EN PUBLICATIONS BS EN ISO 11127-6:2022Preparation of steel substrates before application of paints and related products. Test methods for non-metallic …
