Legacy Way – TBM Ducting

Client: Transcity is an integrated team comprising BMD Constructions, Italian company Ghella and Spanish company Acciona. This team will be supplemented by a number of locally based specialist companies to provide skills and knowledge to deliver Legacy Way.

• Ghella is a privately owned Italian company that has expertise in tunnelling work around the world.
• Acciona, one of Spain’s largest corporations, is a global leader in infrastructure, renewable energy and water resource.
• BMD Constructions is a wholly owned subsidiary of the BMD Group, and provides civil and industrial construction services.

Herrenkneckt are supplying the Tunnel Boring Machines (TBM) to the consortium.   They arethe largest world wide suppliers of this equipment.

Challenge: Herrenkneckt required a local company to build and supply industrial ducting for their TBM.  The selected company had to be able to build this ductwork to fit in difficult area’s with very tight tolerances and the pricing had to be competitive to fight international competition.

Scope of work: The scope was to design and build the industrial ventilation ducting so that it included many bends to enable it to match the complex the TBM structure.

Once the TMB  had been constructed the supplier would be required to assemble the ducting as part of the trial assembly.  Once the client was satisfied the structure would be disassembled, before being reassembled once the TBM was in position to start tunnelling in the western freeway site.

Engineering Solution:  HVAC was selected because they were able to manufacture to the highest quality in their in house plate shop.  HVAC also had the capacity to install the ducting for both the trial assembly as well as when the TBM was in situ. HVAC is 9001:2008 certified with a local facility

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