Slope Stability Analysis

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 JOB NUMBER             25-0664 SITE CLASSIFICATION REPORT
 CLIENT                 MACKY GROUP
 SITE LOCATION          PROPOSED DWELLING
                        15 & 17 MYALL STREET, COOROY
 REPORT DATE            26/05/2025


1. INTRODUCTION
The purpose of this report is to classify the subject allotment in accordance with Australian Standard
2870 - 2011 'Residential Slabs and Footings'. From this classification, a footing system can be recom-
mended for the structure so as to allow adequate performance of the footings under the soil conditions
determined at the site.
Trees: There are small (<5m), medium (5-10m), and large (>10m) trees at this site. Global Testing
recommends an experienced arborist be commissioned to quantify the existing size, location, pre-
dicted maximum height and type of these trees to aid in the design process. It is the responsibility of
the designing engineer to apply the principals of AS2870-2011 Appendix H 'Guide to Design of Foot-
ings for Trees'. The classification herein excludes the effect of trees on the site.


2. SITE DESCRIPTION
 Type of Allotment                                                   Residential
 Vegetation                                                 Grassed/Scattered Undergrowth
 Slope                                                            6% to 8% to East
 Surface Water will Drain Towards                                        East
 Will Surface Water from adjoining                                        No
 allotments traverse this site?
 Surrounding Allotments
                                 Left                                   Dwelling
                                Right                                   Dwelling
                                Rear                                    Dwelling
 Depth to Weathered Rock                                               BH1 (2.0m)
 Depth to Water Table                                                  BH5 (4.0m)


3. SITE CLASSIFICATION AND TARGET STRATA
Based on the findings of the site investigation, the classification of the site is considered to conform to:

CLASS “M” – (Due to Fill, Trees, and Poor Bearing Capacity - See Target
                              Stratum)
              NOTE: If not for the above reasons, the site would have Class H1 characteristics.

in accordance with Australian Standard 2870 - 2011, 'Residential Slabs and Footings, Construction'.

The target stratum for the foundation of the structure located at BH1 is the SANDY CLAY en-
countered at 400 mm below existing ground level.
The target stratum for the foundation of the structure located at BH2 is the SANDY CLAY en-
countered at 500 mm below existing ground level.

       Page | 1 Borelogging in accordance with AS1726-2017 Geotechnical Site Investigations
                                             25-0664