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..
This month’s features
Advisory Desk
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..
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..
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...
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..
AD 428: Draft guidance: lateral and torsional vibration of half-through truss footbridges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..