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.






Perfect Group acknowledges the Aboriginal and Torres Strait Isander people as Traditional Custodians of the country on which we live and work. We pay our respects to the Traditional Custodians and Elders past, present and future, and honour their connection to the land and ongoing contribution to society.