Geotech Report - techtonic · RAL22/0021

                                             PROPOSED RESIDENTIAL DEVELOPMENT
                                             39 PICTURE POINT CRESCENT, NOOSA HEADS

TABLES
Table 1: Summary of Subsurface Profiles ........................................................................................................................... 6

Table 2: Stability Risk Levels .............................................................................................................................................. 9

Table 3: Details of Qualitative Risk Assessment for Property (AGS 2007) ....................................................................... 10

Table 4: Retaining Structure Design Parameters .............................................................................................................. 16



TEXT FIGURES
Text Figure 1: Layout plan (LHS) and a cross-sectional view (RHS) of proposed development (courtesy Clout) ............... 1

Text Figure 2: Aerial image of the site and immediate surrounds (courtesy Nearmap, 24 November 2022) ...................... 3

Text Figure 3: View of site frontage looking north from Picture Point Crescent................................................................... 3

Text Figure 4: View looking north over pool and western side of existing residence........................................................... 3

Text Figure 5: Looking upslope (and south) from northern boundary towards existing residence....................................... 4

Text Figure 6: Site plan showing ground surface contours (courtesy NC Inframaps).......................................................... 4

Text Figure 7: Extract of Laguna Bay Surface Geology Map .............................................................................................. 5

Text Figure 8: Extract from NC landslide hazard overlay mapping ..................................................................................... 8

Text Figure 9: Illustrative depths for piled footings ........................................................................................................... 11

Text Figure 10: Footing depth recommended to minimise risk of undermining ................................................................ 15



FIGURES
Figure 1: Site Plan



APPENDICES
APPENDIX A
Borehole & DCP Reports & Explanatory Notes

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

APPENDIX C
Limitations




10 February 2023
Report No. 22511-001-Rev0                                                             iv