This project involved the extension to the existing live Nowra Zone Substation by constructing a connecting 11Kv Switch Room.  The roof of the existing building was lifted, the existing façade encased in new face brickwork and perimeter of the building provided with a new concrete walkway.

The new 11Kv Switch Room included the excavation and construction of a cable basement, suspended concrete floor slabs, reinforced concrete block walls and steel truss roof framing.  The façade consists of face brickwork and glass blockwork.

INNOVATION:

Due to the site being within the confines of a live power station with possible unmarked underground services, all excavation was carried out by use of non-destructive methods (water blasting) and machine excavation in 50mm deep increments.