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..
This month’s features
Advisory Desk
AD 428: Draft guidance: lateral and torsional vibration of half-through truss footbridges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..
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..
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..
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,..
AD 424: Shear stud length
SCI has been advised that shear studs which are shorter than usual have been placed on the market in the UK, and this AD warns against..
AD 423: Reduction in bending resistance due to high shear
When considering the resistance of cross sections under combined bending and high shear, (where the shear is equal to or exceeds half the..
AD 422: Punching shear check for fin plates in P358
This AD note relates to Check 10 for fin plates in P358 Simple Joints to Eurocode 3 (the Eurocode “Green Book” on simple connections)...
AD 421: Design responsibility for welds in fabricated plate girders
In recent months the SCI has received a number of questions about responsibility for the design of the welds between the web and flanges of..
AD 420: Minimum values of shear and bending moment in beams with web openings
Table 3.1 of SCI publication P355 gives minimum values of co-existent shear and bending moment to be used at beam openings. This AD..