Advisory Desk
AD 550: Stiffness classification forwelded beam to column joints
If a bolted beam to column joint is to be classified as “rigid”, practical recommendations are contained in the Green Book on moment-resisting joints …
AD 549: Steel decking and composite slab span types
Design software, or load-span information, provided by floor decking manufacturers will normally be used to verify the steel decking and composite slab, as its …
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 541: Imposed roof loads in combination with PV
Photovoltaic arrays (PV) are becoming common on roofs. They’re increasingly being added to new structures and retrofitted to existing ones. The UK National …
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 537: Web resistance
The Blue Book contains values of web resistance, for various stiff bearing lengths, ss. During the work to prepare for the “Generation 2” changes, it has …
AD 536: In-plane member buckling lengths for portal frames
The verification of members in portal frames leads to a common question about in-plane buckling lengths, especially when designers are using general software. …
