Advisory Desk
AD 434: Validity rules for hollow section joints
This AD note concerns a significant typographical error in Table 7.8 of BS EN 1993-1-8. The table presents validity limits for welded joints between hollow …
AD 433: Dynamic modulus of concrete for floor vibration analysis
The purpose of this AD note is to provide advice on the choice of elastic modulus of concrete when undertaking the vibration analysis of a composite floor. In …
AD 432: Wind loads on building canopies
The purpose of this AD note is to direct designers’ attention to PD 6688-1-4 as a source of design loads on building canopies and useful data and guidance …
AD 431: Column web panel strengthening
The purpose of this Advisory Desk note is to draw attention to the contribution that full-depth stiffeners make to the shear resistance of column web panels. …
AD 430: Wind load on unclad frames
In order to retain the accurate formatting of the equations in this technical paper, this article is available as a pdf download only. Click here to download …
AD 429: Slip factors for alkali-zinc silicate paint
This AD note draws attention to the slip factors for alkali-zinc silicate painted faying surfaces considered in AD 383 which have been updated in the 2018 …
AD 428: Draft guidance: lateral and torsional vibration of half-through truss footbridges
Purpose of this guidance This note alerts designers to the potential susceptibility of narrow half-through footbridges to excitation by pedestrians in a …
AD 427: Typographical error in P419
A few eagle-eyed readers have noticed a typographical error in SCI publication P419 Brittle fracture: selection of steel sub-grade to BS EN 1993-1-10, within …
AD 426: Bolt head protrusion through nuts and threads in grip lengths
To ensure that bolt threads are fully engaged in the nut, BS EN 1090-2 clause 8.2.2 specifies that the protrusion must be at least one thread pitch. This is …
AD 425: Full depth stiffeners and lateral torsional buckling
The SCI Advisory Desk sometimes receives questions about the potential to use full depth stiffeners to restrain lateral torsional buckling, suggesting that the …
