The residential unit complex at 51 Sylvan Road, Bribie Island was constructed on a 5m deep layer of material described by the geotechnical report as “Loose Sand”. The result of a rising and falling water table within the loose sand layer manifested itself as significant settlement and damage to front corner of the structure.
The presence of an overhanging balcony and stairs to the upper level of the structure precluded the use of heavy machinery. There was also concern from the potential effects of vibration from having any heavy machinery operating in close proximity to the structure.