Multiplex engaged Delta Group as principal contractor in 2015 to complete the demolition and full concrete de-casement of the former Sydney Water Board building and to make way for the tallest residential tower in Sydney – the $680m, 67 storey ‘Greenland Centre’ on the corner of Bathurst and Pitt Streets.

The scope of works involved:

  • Site set up, including amenities, materials hoist, gantries and full height perimeter scaffold.
  • Demolition of existing 27 storey building down to basement level.
  • Retention and hand-over of fully braced steel frame for new construction work.
  • Tower crane installation and operation.
  • Construction of temporary steel support systems for existing framework and to maintain structural integrity.
  • Emission, noise and vibration controls.
  • Removal of friable and non-friable asbestos.
  • Transport logistics, including traffic management and supervision.
  • Recycling of construction waste materials.

As principal contractor and a pioneer of highly complex and systemic, floor-by-floor demolition techniques in high rise CBD structures, we were responsible for managing more than 10 different trades throughout the life of this project, including structural engineering specialists from the Robert Bird Group as well as steel workers, scaffolders, crane and Alimak operators, electricians, plumbers and specialist plant operators.

As demolition and de-casement work went on above us, we also completed civil construction works such as bulk and detailed earthworks, including the construction of reinforced concrete foundations.

As a result of our extensive waste management expertise we were able to recycle 99% all construction waste materials, including:

  • 25,000t of concrete
  • 3,200t of brick
  • 3,500t of sandstone
  • 200t of demolition waste