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Bank Station Upgrade achieves excavation milestone

Installation of a large temporary support truss on the Bank Station Capacity Upgrade project marks a significant milestone for the scheme’s excavation phase.

Robert Bird Group, which played a key role in the design of the truss, said that it will support four levels of basement slab and enable construction of the eight level deep new entrance.

According to Robert Bird, the use of the truss eliminates programme and health and safety risks associated with the conventional use of plunge columns in such applications.

The consultant worked with main contractor Dragados to design he truss which integrates the design of permanent and temporary works with construction methodology and programme.

The truss itself, which includes 100t of steelwork and a jacking system, has been fabricated by Byrne Bros as part of its excavation contract on the 18.5m deep station box at the Whole Block Site site.

The truss and the four basement slabs it supports in the temporary condition will be closely monitored by Dragados and Geocisa.


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