DSM is frequently used in Europe and Asia to improve soft compressible clays where traditional methods, such as surcharging and wick drains are not feasible, due to either stability reasons or time and/or space constraints. Cutter Soil Mixing is a recent method for DSM and has been used on a projects in Australia for settlement control of large oil tanks, retaining walls and shafts. In this presentation the CSM equipment and methodology will be discussed.

Speaker Biography

Denholm Brown is a Geotechnical Engineer with Wagstaff Piling in Brisbane. He obtained Diplomas in Mining and Civil Engineering from RMIT, Melbourne. Denholm has some 38 years experience throughout Australia and South-East Asia.

The $1.88b Gateway Upgrade Project is a Queensland State Government initiative being delivered by Queensland Motorways, with design, construction and maintenance by Leighton Abigroup Joint Venture. The project involves 20 kilometres of Gateway Motorway upgrade between Mt Gravatt-Capalaba Road in the south to Nudgee Road in the north. Significantly, the project includes construction of a second Gateway Bridge, which will provide a new Brisbane River crossing, as well as improved travel times and safety for motorists.

This Project is now well underway with over 14,000 piles installed over the past 15 months by four different foundation companies. In addition to the vast amount of piling this project also boasted the application of the Osterberg Load Test system for the first time in Australia.

A project overview including ground improvement systems, piling, and pile testing will be presented.

Speaker Biography

Michael has been involved in the foundation industry for the past 19 years after obtaining an honours degree in Geological Engineering from the RMIT. Over this time he has been employed by geotechnical consultancies, specialist piling subcontractors and more currently Leighton Contractors where he is seconded to the Gateway Piling Alliance. His involvement in the Gateway Upgrade Project includes the provision of design input, project management, and importantly an interface between the site work and the geotechnical designers.