Appendix B - Geotechnical Investigation Report

Abbreviations Used in Defect Description
                                           Symbol
 Cored Borehole Log Column               Abbreviation     Description

 Point Load Strength Index                   0.6         Axial point load strength index test result (MPa)

                                            x 0.6         Diametral point load strength index test result (MPa)

 Defect Details     – Type                   Be           Parting – bedding or cleavage
                                             CS           Clay seam
                                              Cr          Crushed/sheared seam or zone
                                              J           Joint
                                              Jh          Healed joint
                                              Ji          Incipient joint
                                            XWS           Extremely weathered seam

                     – Orientation         Degrees        Defect orientation is measured relative to normal to the core axis
                                                          (ie. relative to the horizontal for a vertical borehole)
                     – Shape                  P           Planar
                                              C           Curved
                                             Un           Undulating
                                              St          Stepped
                                              Ir          Irregular

                     – Roughness             Vr           Very rough
                                              R           Rough
                                              S           Smooth
                                             Po           Polished
                                              Sl          Slickensided

                     – Infill Material       Ca           Calcite
                                             Cb           Carbonaceous
                                             Clay         Clay
                                             Fe           Iron
                                             Qz           Quartz
                                             Py           Pyrite

                     – Coatings              Cn           Clean
                                             Sn           Stained – no visible coating, surface is discoloured
                                             Vn           Veneer – visible, too thin to measure, may be patchy
                                              Ct          Coating  1mm thick
                                            Filled        Coating > 1mm thick

                     – Thickness            mm.t          Defect thickness measured in millimetres




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