Report on Geotechnical Investigation - 11 Senegal Rise

        The target stratum for the foundation of the structure at location BH1 is the ROCK at a
        depth of 1000mm below existing ground level.
        The target stratum for the foundation of the structure at location BH2 is the ROCK at a
        depth of 1000mm below existing ground level.
        The target stratum for the foundation of the structure at location BH3 is the ROCK at a
        depth of 1000mm below existing ground level.
        The target stratum for the foundation of the structure at location BH4 is the ROCK at a
        depth of 2200mm below existing ground level.

        Please note: This report does not address slope stability. If a slope stability analysis is
        required, the services of a suitably qualified geotechnical engineer should be sought.
        It is the designing engineers responsibility to address the potential influence of any trees
        present on or around the proposed building site.

        If any fill is placed over the existing ground, the structure shall be piered through the
        fill into the existing material. Further note that the placement of reactive material as fill, or
       cutting of the site may change the site’s classification.

4.      SOIL PROFILE

        Refer to Soil Profile Report for borelog information

        Whilst every effort has been made to ensure that the borelogs carried out at the subject
        allotment are indicative of the soil profile over the site any discrepancy between the profile
        detailed in the borelogs and that observed during construction shall be referred to Global
        Testing for immediate attention.


5.      MATERIALS LABORATORY TEST RESULTS
        Soil Laboratory testing carried out on samples of the soil taken from the site gave the following
        results:

                         BOREHOLE                                            BH1
                         DEPTH RANGE OF SAMPLE                            300-500mm
                         LIQUID LIMIT (%)                                     N/a
                         PLASTIC LIMIT (%)                                    N/a
                         PLASTIC INDEX (%)                                    N/a
                         LINEAR SHRINKAGE (%)                                 N/a
                         INSTABILITY INDEX (%)                                N/a
                         SHRINK SWELL INDEX, Iss (%)                          1.3
                         PREDICTED SURFACE MOVEMENT                         25mm


  Please note that the Plasticity Index (PI) determined by the Atterberg Test may be correlated to an
  Instability Index (Ips)with reference to the results of extensive testing carried out by others, notably,
  Dr P Mitchell, ‘Footings for Small Scale Domestic Structures,’ March 1990.
Yours Sincerely,




MICHAEL PINKNEY. (Laboratory Manager)

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