The contractor researched several connection methods for strength and reliability in order to find the best connection solution for coping with vibrations from trains passing by at high speeds and wind loads due to the open design of the platforms. After thoroughly evaluating the connection options, the engineer concluded that Lindapter’s CE Marked Hollo-Bolt should be used because of its high load capacities and its range of independent product approvals. Hollo-Bolt by Lindapter is the only expansion bolt for structural steel that is fully approved by ICC-ES for use in all seismic design categories for resisting wind loads and seismic loads. Therefore, the engineers were sure that the Hollo-Bolt would provide a secure and durable connection to suit the varying wind loads at the station. Further reassurance was provided by Lindapter’s experience gained over the course of 80 years’ pioneering the design and manufacture of steelwork fixings.
Another benefit provided by using Hollo-Bolt was that it omitted on-site hot works, which eliminated the need for platform closures. This allowed the contractor to quickly secure pre-drilled steel hollow sections together to create the structural framework before installing the glass, without causing any disruption to the station. The rapid Hollo-Bolt installation helped the contractors to complete the installation on time and on budget.
Further to the contractors using 2000 M10 Hollo-Bolts for the platform roofs, they then used over 400 M12 Hollo-Bolts to secure the cable management system which runs the length of the station to provide electricity for lighting and digital displays.Click here for more information on the Hollo-Bolt and its range of independent approvals.