Reference Documents

                                                         PROPOSED SUBDIVISION
                                                         41 TALLOWWOOD PLACE, BLACK MOUNTAIN

            Table of Contents

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

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

            3.0    AIMS & METHOD OF INVESTIGATION ................................................................................................................... 2

                   3.1         Fieldwork ...................................................................................................................................................... 2

                   3.2         Laboratory Testing ........................................................................................................................................ 2

            4.0    RESULTS OF INVESTIGATION ................................................................................................................................ 3

                   4.1         Site Description............................................................................................................................................. 3

                   4.2         Topography................................................................................................................................................... 4

                   4.3         Geology ........................................................................................................................................................ 7

                   4.4         Subsurface Conditions.................................................................................................................................. 7

                   4.5         Geotechnical Laboratory Test Results .......................................................................................................... 8

                   4.6         Groundwater ................................................................................................................................................. 8

                   4.7         Surface Drainage .......................................................................................................................................... 8

                   4.8         Vegetation .................................................................................................................................................... 8

                   4.9         Buildings and Other Structures ..................................................................................................................... 9

            5.0    SLOPE STABILITY ASSESSMENT .......................................................................................................................... 9

                   5.1         Existing Conditions ....................................................................................................................................... 9

                   5.2         Slope Stability Assessment ........................................................................................................................ 10

                   5.2.1            Qualitative Assessment......................................................................................................................... 10

                   5.2.2            Numerical Modelling.............................................................................................................................. 11

            6.0    GEOTECHNICAL RECOMMENDATIONS .............................................................................................................. 13

                   6.1         Site Layout and Geotechnical Constraints .................................................................................................. 13

                   6.2         Earthworks .................................................................................................................................................. 14

                   6.2.1            Site Preparation and Trafficability ......................................................................................................... 14

                   6.2.2            Excavations ........................................................................................................................................... 14

                   6.2.3            Batter Slopes ........................................................................................................................................ 15

                   6.2.4            Filling..................................................................................................................................................... 15

                   6.3         Building Foundations .................................................................................................................................. 16

                   6.3.1            Site Classification .................................................................................................................................. 16

                   6.3.2            Footing Design ...................................................................................................................................... 16

                   6.4         Retaining Structures ................................................................................................................................... 17

                   6.5         Drainage ..................................................................................................................................................... 18



             22 May 2023
             Report No. 23099-001-Rev0                                                              iii
Document Set ID: 22826802
Version: 1, Version Date: 23/02/2024