Tag Archives
Clarity brought to blind bolt resistances
Andy Smith of the SCI reports on a recent project to develop characteristic resistances of bespoke connectors, using the approach described in BS EN 1990. In …
News in Brief – November/December 2009
A new free USA guide entitled ‘Seismic Design of Steel Special Moment Frames’ can be downloaded from: www.nehrp.gov/pdf/nistgcr9-917-3.pdf A commemorative …
AD 334: Tension capacity of bolts in tapped holes or when nuts are not fully engaged
The Advisory Desk is often asked for guidance on the calculation of tension capacity of bolts in tapped holes or when the end of the bolt is not protruding …
News in Brief: March 2009
The Galvanizing Association is inviting entries to its annual awards which have been categorised as: Sustainable Galvanizing; Galvanizing in Architecture; …
AD 332: Toughness of Bolts
To avoid brittle fracture, both BS 5950-1[1] and BS EN 1993-1-10[2] provide rules for verifying the adequacy of steel elements at low temperatures. …
AD 302: Tightening of Ordinary Bolts.
The advisory service regularly receives requests for a set of torque values in connection with the installation of ordinary bolts. This usually arises because …
AD 276: The Use of ‘Toggle Bolts’
It has come to our attention that increasing use is being made of ‘toggle bolts’ for blind fixing to hollow sections. A ‘toggle bolt’ (fig. 1) has a …
AD 274: Post-slip capacity of connections using preloaded bolts to BS 5950-1: 2000
The SCI continues to receive questions about preloaded bolts (HSFG bolts), particularly concerning the “capacity after slipping” addressed in clause 6.4.4 …
New Generation Direct Tension Indicators
Direct tension indicators (DTI’s) are a device that can be used to correctly preload High Strength Friction Grip Bolts. FRICTION GRIP BOLTING Batho and …
