Tag Archives
AD 548: High shear regions for large web openings as defined in SCI P355
SCI’s advisory desk has been asked about the definition of a ‘high shear’ region in SCI P355 Design of Composite Beams with Large Web Openings. In P355, …
AD 546: Critical temperatures for compression members in the UK NA to BS EN 1993-1-2
The UK NA to BS EN 1993-1-2 contains values for critical temperatures for compression members, presented in Table NA.1 as a matrix of values for combination of …
AD 544: Washers for preloaded bolting assemblies
The SCI Advisory Desk sometimes receives questions about washers for preloaded bolting assemblies. When preloaded bolts are tightened and unhardened washers …
AD 543: Deflection of composite slabs
Occasionally, SCI’s advisory desk is asked about the simplified rules for controlling the deflection of steel-concrete composite slabs by limiting their …
AD 539: Locking devices for fasteners subject to vibration
SCI is occasionally asked about nuts coming loose if joints are subject to vibration. A number of solutions are possible of which the following are examples. …
AD 531: Heavy power floats on composite slabs during construction
It has come to SCI’s attention that composite slabs are being loaded with large power floats weighing up to 1 tonne, that have not been accounted for in the …
AD 530: Countersunk head bolts
Countersunk head bolts may be manufactured with a slot (for a screwdriver), see Fig. 1, or a hexagonal socket (for an allen key driver), see Fig. 2. This AD is …
AD 520: Amendment to Table 8 in the MPS-Bolts (issue 14)
The BCSA has reviewed the requirements for impact test for machined test pieces in Table 8 of the Model specification for the purchase of structural bolting …
AD 519: Equivalent horizontal forces and combinations of actions
Recent questions to SCI’s Advisory Desk have shown that some designers are unclear whether equivalent horizontal forces (EHFs) should be applied to a …
AD 515: Welding of structural nuts and bolts
SCI’s Advisory Desk has recently received queries from designers asking if it permissible to weld structural nuts and bolts – typically for situations …
