Advisory Desk
AD 410: Pouring concrete to a constant thickness or to a constant plane
Composite flooring systems comprising concrete and profiled steel decking supported by a grillage of primary and secondary steel members are a popular form of …
AD 409: Recent Blue and Orange Book developments
Recent restructuring within the UK steel industry has led to new developments in the provision of structural steel design information produced by SCI; …
AD 408: Effective length of cantilevers
SCI has recently been contacted regarding the effective length of cantilevers and the effective length factors applied for destabilizing loads which are …
AD 407: Section Classification
SCI have been advised that some checking authorities have questioned the approach to calculating α and ψ, which are found in Table 5.2 of BS EN 1993-1-1:2005 …
AD 406: Transient response factors in vibration analysis of staircases
SCI recommends that for most orthodox designs the transient response of a staircase should not be considered in design, as first implied by AD330 [1]. The …
AD 405: Vibration assessment of transient response factors
This advisory desk note clarifies advice given in SCI P354: Design of floors for vibration: a new approach, regarding the calculation of the transient response …
AD 401a: Appropriate anchorage of parallel decking (Revised)
Where profiled steel decking is parallel to the supporting beam, BS EN 1994-1-1 (incorporating corrigenda April 2009: 2004) allows the shear resistance of a …
AD 404: Columns in simple construction
SCI has received reports that some designers are disregarding the rules for the design of columns in braced frames (simple construction). In some cases the …
AD 403: Steel strengths for fabricated haunches
This AD is a simple reminder that the steel strength selected for haunches must match that assumed in the design calculations. As S355 is now the common steel …
AD 402: Design of end plate joints made with preloaded bolts subject to coincident shear and tension.
Advisory Desk note AD373 gave a summary of the checks required on connections subject to combined shear and tension. This AD note discusses the behaviour of …
