Advisory Desk
AD 333: Equivalent Horizontal Forces in BS EN 1993-1-1
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 332: Toughness of Bolts
To avoid brittle fracture, both BS 5950-1[1] and BS EN 1993-1-10[2] provide rules for verifying the adequacy of steel elements at low temperatures. …
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 …


