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Case Study

Wilshire Grand Center

Sectors: Structural, Civil
Applications: Hollow Section (HSS) connections

Summary: Lindapter''''s seismic approved Hollo-Bolt was specified for the Wilshire Grand Center in Los Angeles

Contractors used over 3,000 Hollo-Bolts to connect steel tubes which form the curved atrium structure on the tallest building in LA. Hollo-Bolts were installed from just one side, rapidly achieving discreet splice connections without drilling or welding. The extremely cost effective installation did not require specialist equipment or specialist labor. It dramatically reduced the amount of work at height in comparison to conventional welding or through-bolting methods. The design also eradicated the possibility of tube deformation that is often associated with through-bolting if the bolts are over-tightened. The end result was aesthetically pleasing, clean and discreet splice connections which complement the design of the architecturally exposed steel.
The original Hollo-Bolt by Lindapter, has an extensive range of independent approvals, including  the COLA approval and the  full seismic approval from ICC-ES for all seismic design categories (A-F). It is also the only expansion bolt for structural steel that is featured in the SCI/BCSA joint publication ‘Joints in Steel Construction – Simple Connections’ (Or Green Book as it is commonly referred to in the UK). The guide provides primary design advice and information on using the Hollo-Bolt for structural connections.

Click here to see the various styles, lengths and architectural finishes of Hollo-Bolt