Reference Document - MCU24/0002 [As Published]

                   Qualtest Geotechnics Slope Stability Assessment Tool – Hargreaves & Kidd (2012)



          * The numeral factors allocated to these site features are based on visual observations, engineering judgment, and experience.

                                               Output                                                                         Susceptibility

                                                 < 0.2                                                                    Very Low Risk (VLR)
                                              0.2 – 0.6                                                                       Low Risk (LR)
                                              0.6 – 2.0                                                                   Moderate Risk (MR)
                                              2.0 – 6.0                                                                      High Risk (HR)
                                                 >6.0                                                                    Very High Risk (VHR)


          VLR = Acceptable. Manage by normal slope maintenance procedures.

          LR = Usually acceptable to regulators. Where treatment has been required to reduce the risk to this level, ongoing maintenance is required.
          MR = May be tolerated in certain circumstances (subject to regulator’s approval) but requires investigation, planning, and implementation of treatment options to
          reduce the risk to Low. Treatment options to reduce to Low risk should be implemented as soon as practicable.
          HR = Unacceptable without treatment. Detailed investigation, planning, and implementation of treatment options required to reduce risk to Low. Work would cost a
          substantial sum in relation to the value of the property.
          VHR = Unacceptable without treatment. Extensive detailed investigation and research, planning, and implementation of treatment options essential to reduce risk to
          Low; may be too expensive and not practical. Work is likely to cost more than the value of the property.




Document Set ID: 22750694
Version: 1, Version Date: 03/01/2024