Perfect Contracting completed a technically challenging penetration project in Central Park Mall at Chippendale.

The scope of work for this project involved:

Supply and installation of 16 x 1200 x1200 multi-prop 480 Frames with braces rated at 35kN under the existing beams;

Supply and installation of 56 x 1200 x1200 multi-prop 480 Frames with braces rated at 20kN under the existing beams;

Supply and installation of 30 x MP480 Multi-prop rated at 20kN/leg;

Road sawing slab and wire cuting beams through Perfect Concrete Care;

Hammering, crushing and removal of concrete slab using two of our Brokk 200;

Retaining existing post-tensioned cables in the slab;

Removal and recycle clean concrete and steel.

There were many technical challenges to the project. Given that the mall included residential housing, which is a multi-purpose building, there were stringent noise regulations in place, limiting loud construction activities to the hours between 7 am and 10 am. Additionally, there was a four-meter gap between the slab and the one below it, necessitating the design and installation of an extensive system of multi-props to construct a catch deck.