Geotechnical Report

                                             PROPOSED UNIT DEVELOPMENT
                                             31 BOTTLEBRUSH AVENUE, NOOSA HEADS



TABLES
Table 1: Summary of Subsurface Conditions ...................................................................................................................... 7

Table 2: Stability Risk Levels .............................................................................................................................................. 8

Table 3: Details of Qualitative Risk Assessment for Property (AGS 2007) ......................................................................... 9

Table 4: Retaining Structure Design Parameters .............................................................................................................. 13



TEXT FIGURES
Text Figure 1: Extract of K Architects’ site layout plans for semi basement and ground floor levels ................................... 1

Text Figure 2: Recent aerial image of the site (courtesy Nearmap © ™, image dated 29 October 2020) ........................... 3

Text Figure 3: View from Bottlebrush Avenue looking north-east at front of site ................................................................. 3

Text Figure 4: View of eastern side of residence looking north east. .................................................................................. 3

Text Figure 5: View of rear of property looking north-west .................................................................................................. 4

Text Figure 6: Site plan showing ground surface contours (courtesy SCC My Maps website)............................................ 4

Text Figure 7: Extract of Gympie Special 1:100,000 Geology Map ..................................................................................... 5

Text Figure 8: Location and soil profile at borehole BH1 ..................................................................................................... 6

Text Figure 9: Location and soil profile at borehole BH2 ..................................................................................................... 6

Text Figure 10: Footing depth required to prevent undermining....................................................................................... 12



FIGURES
Figure 1: Site Plan



APPENDICES
APPENDIX A
Test Pit Reports & Explanatory Notes

APPENDIX B
AGS Guidelines - Qualitative Terminology for Use in Assessing Risk to Property
Some Guidelines for Hillside Construction

APPENDIX C
Limitations




17 December 2020
Report No. 20384-001-Rev0                                                             iv