Page 13 - Design Considerations Based on Quantitative Risk Assessments for Slopes

Need for Quantitative Assessment

Current Approach

▪ Although the buffer zone was introduced to manage

risks, the elements at risk and their vulnerability are not

being considered.

▪ A buffer zone or even factor of safety that varies with

the consequences of failure, is therefore required.

▪ Furthermore, rather than having a very wide buffer,

there are other management and engineering

measures that could be considered to reduce the risks

of landslides.