Kingscote Streets Upgrades - Kangaroo Island Council

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6 Granular Pavement This section of the specification details the requirements for supply, spreading, compaction and maintenance of unbound granular pavements. This section shall be read in conjunction with the pavement design details of the drawings. 6.1 General This specification shall be read in conjunction with the following Standards and references, which are deemed to form a part of this specification. TSA Master Specification – Part 215 TSA Master Specification – Part 221 TSA Operational Instruction - 21.6 AS 1289 AS 1141 Supply of pavement materials Un-stabilised granular pavement Recycled Materials for Transport Infrastructure. Methods of Testing Soils for Engineering Purposes Sampling and Testing of Aggregates. 6.2 Materials – Granular Pavement Granular pavement materials are to be as specified herein or as otherwise approved by the Superintendent. The properties of the granular pavement material shall comply with the grading based requirements as specified in the Transport SA Specification. 6.2.1 Quarried Pavement Materials Quarried granular pavement materials shall be obtained from the crushing of approved hard, sound, clean and durable quartzite natural rock in accordance with the Transport SA Specification, Part 215. The type, class and size of the quarried pavement materials shall be as detailed in the pavement design on the design drawings. 6.3 Construction and Workmanship 6.3.1 General Placement of each granular pavement layer shall not commence until the subgrade or underlying layers have been inspected by the Superintendent, and any preceding Hold Points have been released. 6.3.2 Placement of Granular Pavement Each pavement layer shall be spread as a uniform homogeneous layer, which after compaction and trimming will provide the compacted layer thickness as specified in the pavement design. Care shall be taken through the spreading process and at junctions with existing pavements to ensure material is uniform in moisture and particle distribution. Placement of the material shall be planned to reduce the number of joints between placement runs. During and/or following the compaction process each layer shall be trimmed to produce a tight dense surface to the tolerances specified. Any areas identified as low shall be tyned, respread and recompacted. Ref No. 20120236SA1 Kingscote Streets Upgrades Technical Specification 25
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
Page 1 and 2: Kingscote Streets Upgrades Technica
Page 3 and 4: Table of Contents 1 General Provisi
Page 5 and 6: 5.2.2 Quality Testing 23 5.2.3 Tole
Page 7 and 8: Table 4.2 Compaction requirements f
Page 9 and 10: Table Error! No text of specified s
Page 11 and 12: The Contractor shall be responsible
Page 13 and 14: • Lateral supports - provide late
Page 15 and 16: • Material, which, after compacti
Page 17 and 18: All areas disturbed by the excavati
Page 19 and 20: 3.3.8.2 Placing Fill The method of
Page 21 and 22: 3.4.2 Materials Suitable materials
Page 23 and 24: 3.4.5 Tolerances Construction Toler
Page 25 and 26: 4.2.4 Concrete Concrete grade for d
Page 27 and 28: 4.3.8 Pipe Surround Bedding materia
Page 29 and 30: No pumping will be permitted during
Page 31 and 32: All concrete work shall be in accor
Page 33 and 34: 5 Pavement Subgrade This section of
Page 35: 5.2.4 Acceptance Criteria Areas whe
Page 39 and 40: The following test procedures shall
Page 41 and 42: 7 Spray Seals This section of the s
Page 43 and 44: • retains aggregate after applica
Page 45 and 46: The application temperatures for pr
Page 47 and 48: 7.5 Quality Requirements - Spray Se
Page 49 and 50: 8 Kerbing This section of the speci
Page 51 and 52: Wherever the work of placing concre
Page 53 and 54: 9 Verges, Footpaths and Driveways T
Page 55: Footpaths and driveways Absolute ±

Kingscote Streets Upgrades - Kangaroo Island Council

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