Slope Stability Report - 22072-001-Rev0

H.M de Groot                                                                                    22072-001-Rev0
                                                                                                 21 March 2022

2.6   Buildings and Other Structures
At the time of the assessment, a small brick veneer residence and a colourbond clad workshop were located
above the proposed shed site to the north. Based on an external visual assessment, the house and
workshop did not display any obvious signs of distress (e.g. cracking, misalignment, etc.) which could be
attributes to slope instability.


3.0     ASSESSMENT OF LAND STABILITY
3.1   Existing Conditions
As illustrated in Text Figure 9, NC’s landslide hazard overlay map indicates that the proposed shed site has
a Moderate (pale yellow shading) landslide susceptibility, whilst other areas across the site (typically gullies)
are mapped as having a High (orange shading) landslide susceptibility.




                                                                     Proposed Shed Location




Text Figure 9: Extract from NC Landslide Hazard Mapping

It should be noted that the NC map is a broad-scale indication of the potential landslide susceptibility and
is superseded by this site specific assessment. The site did not exhibit any indicators of global, natural
slope instability at the time of our inspection. No landslide back scarps or areas of naturally ‘hummocky’
ground were observed in the vicinity of the proposed building area, with residual soil and exposed rock in
existing cut batters.

3.2   Stability Risk Assessment
The risk assessment for this project has been carried out following AGS 2007 Practice Note Guidelines for
Landslide Risk Management. Relative levels of risk and their implications are given in Table 1 overleaf and
the Qualitative Terminology for Use in Assessing Risk to Property is also attached.




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