Kingscote Streets Upgrades - Kangaroo Island Council

6.3.3 Compaction of Granular Pavement
All pavement layers shall be systematically compacted in layers as detailed in the pavement design
with appropriate compaction equipment to ensure the full depth and full width of each layer.
Care shall be taken to ensure that vibration from compaction equipment does not affect adjacent
structures. The maximum size of compaction equipment in established residential area shall be a
nominal 6 tonne roller, unless noted otherwise.
Following compaction the surface finish of the each unbound granular pavement layer shall be a
tight dense surface, free of loose material, excessive slurry fines, or segregated 'bony' material
The finished surface of finished base material underlying sprayed seals shall be completed to
provide hard tight mosaic finish suitable for spray sealing using appropriate compaction equipment.
6.3.4 Moisture Control
Moisture shall be uniformly distributed through the material by use of ‘wet mix’ materials and/or
spraying by fine mist sprays prior to spreading and compaction. Care shall be taken to ensure that
fines are not washed out of the base during spraying operations.
On completion of pavement layers the moisture content shall be reduced by “dry back”, prior to
installation of the next layer, as detailed in the pavement design on the drawings. The Contractor
shall make allowance in his Tender and construction programme for this process.
6.3.5 Proof Rolling
The Contractor shall make available a fully laden water cart or pneumatic multi-wheel roller (Class
PR30), or similar approved vehicle for proof rolling of each unbound granular pavement layer.
The Contractor shall ensure that the proof rolling vehicle is available on site when required by the
Superintendent for proof rolling. Payment will not be made for transportation to/and or around the
site of the vehicle for proof rolling.
6.3.6 Maintenance of Pavement Layers
Completed pavement layers shall be maintained with adequate drainage to ensure the water runoff
without ponding.
Pavement layers affected by moisture after achieving the specified requirements shall be dried out,
reworked and recompacted as required to achieve the specified requirements.
6.4 Quality Requirements – Granular Pavements
6.4.1 Materials
Granular pavement materials shall be produced into identifiable lots and tested in accordance this
specification and the Transport SA Master Specification.
Records of materials shall be kept in the form of delivery dockets or similar to enable traceability of
materials incorporated into the pavement.
6.4.2 Inspections
The following Hold Point inspections are required during the construction of granular pavements:
H-GP1
H-GP2
H-GP3
Approval of pavement materials
Approval of subgrade and underlying pavement layers prior to the commencement
of subsequent layers
Approval of completed pavement layers
Ref No. 20120236SA1 Kingscote Streets Upgrades Technical Specification 26