Geotechnical Report

the buried services invert levels would be approximately between 1.2m and 1.5m below the existing surface
levels beyond the north-eastern site boundary.

It is recommended that the loads from any of the proposed structures do not intersect the zone of influence
of the Unitywater asset. Whilst the currently available information does not indicate that the sewer line will
be in close proximity to the proposed footings, we recommend that the invert level of the pipe be confirmed,
and, if applicable, the design engineer should ensure that no loads from the new footings will impact the
sewer main. Locally, in the unlikely event of any potential issues, this may require deeper pile footings
founded below the sewer pipe invert levels.



6.9    Overall Effect of the Development on Stability
We do not consider that the development will have any detrimental impact on the stability of the site. This
is on condition that the design and construction of the proposed development is completed in accordance
with the geotechnical advice presented in this report.


7 CONCLUSION
We consider that the site is suitable for the proposed development.

The geotechnical advice presented in the preceding sections of this report are intended to achieve
“Acceptable” levels of risk of instability of the site and to control future risks. The above recommendations
address geotechnical issues only and other conditions may be required to address other aspects.



8     GENERAL COMMENTS
The recommendations presented in this report include specific issues to be addressed during the design and
construction phase of the project. In the event that any of the advice presented in this report is not
implemented, the general recommendations may become inapplicable and JK Geotechnics accept no
responsibility whatsoever for the performance of the structure where recommendations are not
implemented in full and properly tested, inspected and documented.

The long term successful performance of floor slabs and pavements is dependent on the satisfactory
completion of the earthworks. In order to achieve this, the quality assurance program should not be limited
to routine compaction density testing only. Other critical factors associated with the earthworks may include
subgrade preparation, selection of fill materials, control of moisture content and drainage, etc. The
satisfactory control and assessment of these items may require judgment from an experienced engineer.
Such judgment often cannot be made by a technician who may not have formal engineering qualifications
and experience. In order to identify potential problems, we recommend that a pre-construction meeting be
held so that all parties involved understand the earthworks requirements and potential difficulties. This
meeting should clearly define the lines of communication and responsibility.



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