Changes Application - MCU15/0023.02

                                                    NOTES RELATING TO THIS REPORT


INTRODUCTION                                                                   descriptive terms regarding weathering (AS1726-1993
These notes are provided by Soil Surveys Engineering                           Table A9), strength (refer Table 1 below), defects
Pty Limited (the Company) to complement the                                    (AS1726-1993 Table Al0), etc. Where strength testing
geotechnical report in regard to classification methods                        (ie Point Loads) is carried out. AS1726-1993 Table A8
and field procedures.                 Not all notes are necessarily            is used. Where relevant, further information regarding
relevant to all reports.                                                       rock classification is attached.
The ground is a product of continuing natural and
                                                                                Table 1 Estimatedstren9th descriptionsgiven to rock
man-made processes and therefore exhibits a variety
                                                                                             based on engineering examination
of characteristics and properties which vary from place
to place and can change with time.                             Geotechnical            Stren9thTerm              Approximate Qu (MPa)
engineering involves gathering and assimilating limited                             ExtremelyWeak                          < 1.0

information about these characteristics and properties
                                                                                        Very Weak                      1.0-5.0
in order to understand or predict the behaviour of the
                                                                                             Weak                      5.0 - 25
ground on a particular site under certain conditions.
This report may contain such information obtained by                                 Medium Strong                     25 - 50

inspection, excavation, probing, sampling, testing or                                      Strong                      50 - 100
other means of investigation.                  If so, they are directly                Very Strong                    100 - 250
relevant only to the ground at the place where and at
                                                                                    Extremely Strong                       > 250
the time when the investigation was carried out.
                                                                                 Ref ISRM "Suggested Methods for the Quantitative
DESCRIPTION            AND CLASSIFICA TlON METHODS
                                                                                   Description of Discontinuities in Rock Masses"
Soils - The methods of description and classification of
soils and rocks used in this report are based on
                                                                               SAMPLING
Australian      Standard 1726-1993 (Geotechnical Site
                                                                               Sampling is carried out during drilling or from other
Investigations),         where         appropriate.            In   general,
                                                                               excavations to allow en9ineering examination (and
descriptions cover the following properties - sailor rock
                                                                               laboratory testing where required) of the sailor rock.
ype, colour,           structure,       strength or density, and
nclusions. Identification and classification of soil and                       Disturbed      samples    taken    during    drilling   provide

ock involves judgement and the Company infers                                  information on plasticity, grain size, colour, moisture

accuracy only to the extent that is common in current                          content, minor constituents and, depending upon

geotechnical practice.                                                         sample disturbance, (information on strength and
                                                                               structure).
Soil types are described accordin9 to the dominant
particle     size and         behaviour         as set out           in AS     Undisturbed samples are taken by pushing a thin

1726-1993.                                                                     walled sample tube, usually 50mm diameter (U50), into
                                                                               the soil and withdrawing it with a sample of the soil
Cohesive soils are classified on the basis of strength
                                                                               contained in a relatively undisturbed state.               Such
consistency) either by use of hand penetrometer,
                                                                               samples yield information on structure and strength,
shear      vane,        laboratory        testing         or    engineering
                                                                               and are necessary for laboratory determination of
examination.           The strength terms are defined in
                                                                               shear    strength,     volume      change      potential    and
AS1726-1993 Table A4.
                                                                               compressibility.      Undisturbed sampling is generally
Non-cohesive soils are classified on the basis of
                                                                               effective only in cohesive soils.
relative density usually based on insitu testing or
                                                                               Details of the type and method of sampling used are
engineering examination (see AS1726-1993 Table AS).
                                                                               given on the attached logs.
B9.cJs.s.
       - Rock types are classified by their geological
names       (AS1726-1993               Table       A6),    together     with




NOTES   RELA TlNG   TO THIS REPORT.    JUNE 2009                                                      SOIL SURVEYS         ENGINEERING




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