Slope instability occurs in many parts of urban and rural Victoria and often impacts on housing, roads, railways and other development. This has been recognised by many local government authorities, and others, and has led to the requirement by many local government councils for stability assessments prior to allowing building development. Landslide risk assessments are often required to meet statutory requirements. Sites within an erosion management overlay often trigger the requirement for a landside risk assessment. In most cases it is preferred to undertake some preliminary walk-over and desktop study to assist with initial assessment. These initial works can often assist with determination of an appropriate scope of works.
As stated within Australian Geomechanics Vol 42 No 1 March 2007 “The main objectives of risk evaluation are usually to decide whether to accept or treat the risks and to set priorities. The Tolerable Risk Criteria are usually imposed by the regulator, unless agreed otherwise with the owner/client”