Geotech Report - Initial Findings

Essence of Peregian
215-219 David Low Way, Peregian Beach
Project No.: 62731
Site No.: 52930
Project No. 007-160A,
27 April 2010




          TABLE OF CONTENTS
          SECTION 1 - INTRODUCTION                                                                                                                                                                                          2
                         1.1                               Project ........................................................................................................................................................ 2
                         1.2                               Proposed Scope of Work ........................................................................................................................... 2
                         1.3                               Commission ............................................................................................................................................... 2

          SECTION 2 - THE SITE                                                                                                                                                                                            3
                         2.1                               Previous Investigation ................................................................................................................................ 3
                         2.2                               Site Description .......................................................................................................................................... 4
                         2.3                               Geology ...................................................................................................................................................... 5

          SECTION 3 - FIELDWORK                                                                                                                                                                                       6
                          3.1                              Drilling and Sampling Methods .................................................................................................................. 6
                          3.2                              Bore Locations ........................................................................................................................................... 6

          SECTION 4 - INVESTIGATION RESULTS                                                                                                                                                            7
                         4.1           Reports ....................................................................................................................................................... 7
                         4.2           Subsurface Conditions ............................................................................................................................... 7
                         4.3           Groundwater .............................................................................................................................................. 7

          SECTION 5 - GEOTECHNICAL DESIGN DISCUSSION                                                                                                                                                8
                         5.1          Ground Model ............................................................................................................................................ 8
                         5.2          Existing Fill Condition and Performance .................................................................................................... 8
                         5.3          Earthworks ................................................................................................................................................. 9
                                      5.3.1     Excavation ................................................................................................................................... 9
                                      5.3.2     Temporary Batter Stability ........................................................................................................... 9
                                      5.3.3     Batter Erosion Protection ............................................................................................................ 9
                                      5.3.4     Compaction ...............................................................................................................................10
                                      5.3.5     Traffickability..............................................................................................................................10
                         5.4          Groundwater Control ................................................................................................................................10
                                      5.4.1     Temporary .................................................................................................................................10
                                      5.4.2     Permanent Groundwater Control ..............................................................................................11
                         5.5          Site Settlement .........................................................................................................................................12
                         5.6          Foundations .............................................................................................................................................12
                                      5.6.1     Strip and Pad Footing................................................................................................................12
                                      5.6.2     Pile Foundations ........................................................................................................................13
                                      5.6.3     Raft Foundation .........................................................................................................................13
                         5.7          Retaining Walls ........................................................................................................................................14
                         5.8          On-Ground Slabs and Pavements ...........................................................................................................14
                         5.9          Vibration ...................................................................................................................................................15

                                  TABLES:
                                  Table 1: Summary of Particle Size Distribution Test Results ................................................................................................. 3
                                  Table 2: Summary of Particle Size Distribution Test Results ................................................................................................. 7
                                  Table 3: Maximum Temporary Unsurcharged Cut Batter Slopes ........................................................................................... 9
                                  Table 4: Subgrade and Fill Compaction Requirements ........................................................................................................10
                                  Table 5: Working Bearing Capacity for Design of Shallow Foundations in Natural Soils .....................................................12
                                  Table 6: Maximum Working Bearing Pressures for Pile Design ...........................................................................................13
                                  Table 7: Soil Settlement Modulus Values .............................................................................................................................13
                                  Table 8: Lateral Earth Pressure Coefficients ........................................................................................................................14
                                  Table 9: Subgrade Design Parameters .................................................................................................................................14

                                  ATTACHMENTS:
                                  Drawing No. 1                          Locality Plan & Test Locations

                                  Appendix A                              Bore Report Sheets with Explanatory Notes