Slope Stability Report (4) · EXE22/0020

Specialists in transport geotechnics

3.2.4 Buildings, other structures
The property has been development and landscaped with a double story dwelling with an
attached pool and deck. The southern portion of the property is linked with paving around all
sides of the house which leads to the terraced northern portion of the property. North of the
house there are a number of retaining walls varying in height that have resulted in multiple flat
grassed areas. These retaining walls are generally constructed from rendered block work where
linked to the house and timber sleeper walls at the lower terraces.

3.2.5 Site Classification
A site classification report has been previously completed by others and is outside the scope of
this report.

4 SLOPE RISK ASSESSMENT

4.1 Introduction
Utilising the Australian Geomechanics Society Guidelines for Landslide Risk Management (2007)
risk assessment methodology, and provided that the development construction and post
construction maintenance of the site is undertaken in accordance with the restrictions and
precautions outlined in Section 5, the site assessed risk level is considered to be Low.
Table 5 summarises qualitative assessment of slope instability risk prior to any remedial works or
engineering controls. Table 6 shows the assessed qualitative risk following appropriate
engineering controls and practices in design and construction, risk management, including
earthworks in accordance with the guidelines in this report.


  Table 5: Results of Qualitative Assessment of Risk to Property - Without Engineering Controls
                                                                     Without Engineering Controls
       Potential Hazard                                                       Likelihood of
                                Elements at Risk                                               Qualitative Risk
                                                         Consequence           Occurrence



   -   Shallow failure       Elements in proposed          Medium                 Unlikely            Low
                               building envelope



   -   Deep seated failure   Elements in proposed                                                    Low
                                                            Major                   Rare
                               building envelope




9 August 2022                       CGC-SR-2022-012-R01-Rev01                                     Page 12