StoneStrong Engineered Retaining Structure from Concrib

Stone Strong for 17 Mile Rocks Road Improvements

The development:
17 Mile Rocks Road is a sub-arterial road that links the ever-growing Centenary suburbs of Brisbane with the inner West. As a result of new residential development in the area, 17 Mile Rocks Rd was unable to cope with increased traffic volumes. This was particularly the case at the Duporth Avenue intersection.

The site:
The Brisbane City Council undertook a traffic improvement program that required the road to be realigned to ease congestion, and improve safety by increasing the length of the merge lane. New pedestrian pathways and a bicycle lane were also incorporated in the project.

The solution:
The original system specified in the tender documents was a geo-grid reinforced soil /small segmental block design. StoneStrong Big Block System was offered by Concrib as a Design & Construct Alternative Engineered Solution. The StoneStrong system put forward by Concrib's designers was a near-vertical Gravity Design. It covers a total wall area of approximately 700 square metres and has a maximum wall height of 5.0 metres.

The process:
With the StoneStrong system we were able to greatly reduce the amount of excavation required for the select-fill reinforced soil zone as well as embedment depth of the small-block system, yielding a substantial saving in both time and excavation volume. The great aesthetics of StoneStrong's chiselled-granite facing also played a part in the selection of the retaining wall.