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

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over the whole of its length and shall not be more than 6mm wide.

Kerbs and kerb and channel shall be laid so that the surface does not vary more than 10mm from the line
and level shown on the drawings and any irregularities shall not vary more than 10mm from the bottom
edge of a 3m straight edge, due allowance being made for any specified vertical curvature.

Also the difference between the deviations from correct levels at any two points 30m apart shall not
exceed 30mm.

Kerb and channelling damaged during any phase of the work shall be removed from the site by the
Contractor at his own expense. The actual sections of damaged kerb and channel to be removed will be
indicated by the Superintendent. The Contractor shall replace all damaged sections with new kerb and
channel of matching profile at his own expense, all work being to the satisfaction of the Superintendent.

5.8 Reinforced Concrete

Materials and construction requirements shall conform to AS 3600.

5.9 Stone Pitching

Stone pitching shall be !aid where shown on the drawings or where directed by the Superintendent and
shall be composed of sound igneous, metamorphic or approved sedimentary rock which will not
disintegrate in water.

The stone shall be not less than 0.015m° and generally no dimensions shall be less than 200mm but,
where the superficial area of the stone is 1 000cm’ or greater, the depth may be reduced to 150mm. The
stones shall be properly bedded to even planes on a bed of mortar of 25mm minimum thickness and
wedged together with broken rock and shall be grouted with cement mortar. Stones shall be placed so as
to form irregular joints. All stone shall be interlocked and wedged with smaller size rock as necessary, so
that no single rock may be easily dislodged and no large voids remain between rocks. All stone pitched
faces must be stable prior to grouting with mortar.

The mortar shall consist of 1 part of Portland cement to 3 parts of approved sand by volume. Materials
shall be as specified in the attached drawings.

The mortar shall be applied by means of a trowel and shall be worked between the stones so that the
interstices are completely filled. The grouted stone must be shaded and kept damp for at least 48 hours.
After the mortar has set, if any stones are not firmly held in position, the mortar shall be removed around
such loose stones and the area regrouted.

Rock surfaces shall be cleaned free of any coating of cement mortar exposing the faces of the rock.

The area of cement grouted stone pitching for the purposes of payment shall be taken to be the net
exposed or upper surface area and payment will be made at the Schedule rate only for the quantity
which is actually ordered by the Superintendent and laid.

41/22382/11840 Girraween Sports Precinct 32
Earthworks Package