Attachment F - Geotechnical Report

                                            PROPOSED COMMERCIAL & RESIDENTIAL DEVELOPMENT
                                            30-32 DOONELLA ST, TEWANTIN



Table of Contents

1.0   INTRODUCTION ........................................................................................................................................................ 1

2.0   PROPOSED DEVELOPMENT ................................................................................................................................... 1

3.0   SITE DESCRIPTION .................................................................................................................................................. 2

4.0   METHOD OF INVESTIGATION ................................................................................................................................. 4

      4.1         Fieldwork ...................................................................................................................................................... 4

      4.2         Laboratory Testing ........................................................................................................................................ 4

5.0   INVESTIGATION FINDINGS ..................................................................................................................................... 5

      5.1         Geology ........................................................................................................................................................ 5

      5.2         Subsurface Conditions.................................................................................................................................. 5

      5.3         Laboratory Testing ........................................................................................................................................ 6

6.0   ENGINEERING ASSESSMENT ................................................................................................................................ 7

      6.1         Earthworks .................................................................................................................................................... 7

      6.1.1            Site Preparation ...................................................................................................................................... 7

      6.1.2            Trafficability ............................................................................................................................................. 7

      6.1.3            Excavations ............................................................................................................................................. 7

      6.1.4            Batter Slopes .......................................................................................................................................... 7

      6.1.5            Filling....................................................................................................................................................... 8

      6.1.6            Material Suitability for Re-Use ................................................................................................................. 8

      6.2         Building Foundations .................................................................................................................................... 8

      6.2.1            Indicative Site Classification.................................................................................................................... 8

      6.2.2            Footing Design ........................................................................................................................................ 8

      6.3         Retaining Structures ..................................................................................................................................... 9

      6.4         Pavement Design Parameters ...................................................................................................................... 9

      6.5         Drainage ..................................................................................................................................................... 10

      6.6         Acid Sulfate Soils ........................................................................................................................................ 10

7.0   LIMITATIONS .......................................................................................................................................................... 10




22 June 2018
Report No. 18151-001-Rev0                                                              iii