187440-GEO-Site Classification Report[A] (1)

8.0      General Site Notes_____________________________________________
1. All loose surface fill, all roots and all organic material are to be removed from the building platform.


2. Notwithstanding the recommendations made in this report, wherever footings are close to any excavations or
easements, that part of the footing must be deepened so that the projection from the underside of the footing to the
bottom of the excavations makes an angle not exceeding 30 degrees in sandy soils and 45 degrees in clayey soils (This
angle is measured from the horizontal). Steeper angles are not recommended unless sufficient testing and investigation
has been carried out to indicate otherwise or the foundations are founded in competent rock.


3. Care shall be taken with surface drainage of the allotment from the start of construction and must be well drained so
that water cannot pond beside or adjacent to footings. The drainage system shall be completed by the finish of
construction of the house in accordance with AS2870-2011 Clause 5.5.3 (a).



4. Proper site drainage is very important in reactive sites such as this site. It is therefore recommended that the ground
surface immediately next to the perimeter footings be graded away or site drainage issues be addressed. Should you the
client require detailed design for specific site drainage plans please do not hesitate to contact Intrax Consulting Group
Pty Ltd.


5. Any filling placed across the site to assist in levelling prior to slab construction should conform with the requirement
for either Controlled fill (Clause 2.5.3) or Rolled fill (Clause 6.4.2) AS 2870-2011. These clauses are as follows. If it cannot
be confirmed that the fill is Controlled Fill or Rolled Fill then the reader should refer to item (c).

        A. Controlled Fill - Fill that will be required to support structures or associated pavements, or for which
engineering properties are to be controlled AS2870-2011. Refer Clause 2.5.3, Clause 2.5.3(a)(c) - (i.e: where a specification
has been provided on the type, quality and compaction requirements for filling at a site and the earthworks have been
deemed compliant with the specification)
          B. Intrax has the express right to deem FILL uncontrolled where it cannot be clearly demonstrated that fill has
been placed under the above conditions. That is to say that it is a requirement of the developer/builder to demonstrate
fill placement has been placed in the appropriate layer thicknesses.

         C. Rolled Fill - Rolled Fill consists of material compacted in layers by repeated rolling with an excavator or similar
equipment. The depth of rolled fill shall not exceed 0.6m compacted in layers not more than 0.3m thick for sand material
or 0.3m compacted in layers not more than 0.15m thick for other material AS2870-2011 Cl6.4.2(b).
           D. Where the nature of the fill cannot be confirmed, this office must undertake an assessment of the fill or be
supplied with a suitable compaction report or geotechnical assessment of the fill to undertake an appropriate design for
the site if the fill is to be utilised as a foundation.



6. We advise that it is possible that some sites may still have the presence of isolated areas of original organic material
that may not have been fully removed during the subdivision earthworks development stage. Intrax will make every
effort to identify organic material within the soil profile, however due to the limitation on the number of boreholes for
each site investigation, it is possible that some of these pockets may escape identification. Intrax does not take
responsibility for isolated organic material that lies in areas outside our borehole locations, to the extent that these
pockets could affect the design or construction of the footing system.




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