Kingscote Streets Upgrades - Kangaroo Island Council

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Once an area or lot has been proof rolled and accepted by the Superintendent, any damage to the subgrade due to weather or the Contractor’s activities shall be the responsibility of the Contractor. No further payment will be made for the repair of soft spots as a result of such damage. 5.1.5 Protection of the Subgrade Immediately following approval of the subgrade the Contractor shall commence construction of the pavement to protect the subgrade from moisture from inclement weather and/or construction traffic. 5.1.6 Subgrade Remediation Where directed by the Superintendent, the Contractor shall carry out remedial works to the affected areas as directed by the Superintendent: In confined areas where movement is detected, the Contractor shall remove the suspect subgrade to the depth nominated by the Superintendent and replace and compact with quarry waste (PM3/55), screened quarry rubble (PM2/20) or stockpiled pavement material as directed. In larger areas, the Contractor shall remove the suspect subgrade to the depth nominated by the Superintendent and backfill using rock ballast (RB65/RB100) rolled to provide a tight, compact working platform, to enable construction of the pavement layers as specified elsewhere. 5.2 Quality Requirements – Subgrade Preparation 5.2.1 Inspections The following Hold Points are required during the subgrade preparation: H-SG1 5.2.2 Quality Testing Approval and proof roll prior of the subgrade, prior to commencing pavement construction. The Contractor shall undertake testing of the subgrade at the following minimum frequency: Table 5.1 Quality Testing Requirements for Subgrade Preparation Item Test type Minimum Testing Frequency Subgrade Field Dry Density 1 per 300 m 2 or min of 3 Maximum Dry Density Optimum Moisture Content 1 per material type 1 per material type Level of finished Subgrade Verification Survey 20 m Chainages The following test procedures shall be as detailed in the granular pavement section of this specification. 5.2.3 Tolerances Construction tolerances on each finished granular pavement layer are as follows: Table 5.2 Item Finished level of subgrade Field Dry Density Field Moisture content Tolerances on Subgrade Preparation Tolerance As detailed in the pavement design Not Applicable -10% + 3% of specified moisture Ref No. 20120236SA1 Kingscote Streets Upgrades Technical Specification 23
5.2.4 Acceptance Criteria Areas where the subgrade damaged subsequent to meeting the specified requirements due to weather, vehicular traffic or the Contractor’s activities shall be re-worked to meet the specified requirements at the Contractor’s cost. Ref No. 20120236SA1 Kingscote Streets Upgrades Technical Specification 24
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: 5 Pavement Subgrade This section of
Page 37 and 38: 6.3.3 Compaction of Granular Paveme
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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