Design and Construct of this landmark structure.

The project

The Iluka re-development is an 88 storey mixed-use residential tower with commercial space at street level on the Surfers Paradise waterfront. Once complete it will be the tallest tower in terms of usable space in Queensland.

The challenge

The building requires a six level basement carpark to be constructed. Ground conditions involve layers of sands, clays, and underlying medium strong rock.  There is a high water table with strong tidal influence.  

The solution

Keller worked with the end client and their engineers to develop a buildable, value added ‘top down’ construction method.  The works include 1.80m diameter bored piles to depths of 42m incorporating large prefabricated reinforced concrete plunge columns, and 1.5m x 2.8m barrettes installed to 60m that contain steel plunge columns.  More barrettes will form the large core structure through the centre of the building.

A diaphragm wall installed to 38m forms the perimeter retention system that prevents water ingress into the basement.

All this constructed on a site with only a 3600m2 footprint.

Project Facts


Forise Investments

Main Contractor(s)

Keller Pty Ltd

Keller Business Unit(s)




Download Project Sheet

Iluka Redevelopment