Advisory Desk
AD 330: Open top box girders for bridges
Recently there has been an increase in the use of ‘open-top’ boxes for the creation of composite box girder bridges. Typically, they are employed where the …
AD 330: Vibration of steel staircases
The Advisory Desk has received a number of queries asking for guidance on vi- bration of steel staircases. In fact, guidance is already given in several parts …
AD 329: Dealing with connection design in a 3D frame analysis
For a structure modelled in a 3D frame analysis, the ends of every beam element have six degrees of freedom and hence there are six possible forces or moments …
AD 328: Length of slotted holes and kidney-shaped slots
The purpose of this AD Note is to clarify the definition of the length of slotted holes and kidney shaped holes. The need for clarification has arisen because …
AD 327: Floor vibrations – multiplying factors for office floors
In order to retain the accurate formatting of the equations in this advisory desk, this article is available as a pdf download only. Click here to download …
AD 326: Revision of BS 5400-3 LTB rules
In order to retain the accurate formatting of the equations in this advisory desk, this article is available as a pdf download only. Click here to download …
AD 325: Curtailment of transverse bar reinforcement in composite beams with steel decking
In order to retain the accurate formatting of the equations in this advisory desk, this article is available as a pdf download only. Click here to download …
AD 324: Masking of faying surfaces for slip-resistant connections
The performance of slip-resistant bolted connections depends on the friction that can be developed between the faying surfaces and that in turn depends on the …
AD 323: Brittle fracture requirements for baseplates
When BS 5950-1 was first published in 1985, the limits on thickness in 2.4.4 Brittle fracture were not applied to grade 43 (S275) base plates. When BS 5950-1 …
AD 322: Anchorage of precast floor units for robustness
The purpose of this AD is to clarify the situation regarding the requirements for anchorage of precast floor units for robustness. Clause 2.4.5.3 e) of BS …
