06/1168 - Change a Development Approval [As Published] · 132006.1168.02

the areas defined above.
3.4 Earthworks

3.4.1 General
Earthworks shall be carried out in accordance with AS 3798 for large scale operations.

The Contractor shall engage a NATA registered testing authority to undertake geotechnical testing to a
level 1 standard in accordance with AS 3798 except that:

» The Contractor is to arrange for testing and for recording of the position and level of the tests.
» The soil tester shall select the test sites at random.
» The soil tester shall show position and level of tests on their test certificates.

Earthworks shall include all operations necessary to excavate materials as required, construct
embankments including materials from borrow areas, place selected fill, place backfill for culverts,
structures and pipelines unless separately designated, construct drains, remove and replace unsuitable
materials, shape and trim the site including drains, all as shown on the Drawings and in the Specification
and as may be directed by the Superintendent during construction.

The following are definitions of terms referred to in this section of the Specification:

Subgrade The in situ material below the underside of the pavement and
concrete driveways or fill.

Subgrade — Fields The in situ material below the underside of the topsoil later.

Imported Fill Material brought onto the site.

Where referred to in this Speciftcation, the degree of compaction specified shall be given as a minimum
relative compaction being the dry density ratio calculated in accordance with AS 1289. All testing shall
relate to Standard Compaction in accordance with AS1289.

The existing natural surface levels shown on the drawings or provided otherwise to the Contractor were
the levels of the surface at the time of survey and the accuracy of these levels cannot be guaranteed.
The Principal will not consider any claim from the Contractor due to such information and calculated
quantities proving to be at variance from actual conditions encountered. The Contractor shall be deemed
to have taken into account all variances occurring in natural surface levels between surveyed cross
sections and surveyed points.

3.4.2 Earthworks Survey Controls

Before starting earthworks, the Contractor shall offset any pegged centreline or traverse line with clearly
marked and levelled offset pegs, clear of the limits of the earthworks and in addition shall set any other
line and/or level pegs as necessary for effective control of earthworks, pavement construction and
general formation.

41/2238 2/11840 Girraween Sports Precinct 17
Earthworks Package