Kingscote Streets Upgrades - Kangaroo Island Council
Kingscote Streets Upgrades - Kangaroo Island Council Kingscote Streets Upgrades - Kangaroo Island Council
4 Stormwater Drainage This section of the specification details the requirements for supply of materials and construction of stormwater drainage pipelines and structures. This section shall be read in conjunction with the design details and drawings. 4.1 General This specification shall be read in conjunction with the following Standards and references, which are deemed to form a part of this specification. AS4058 AS 1646 AS 1597 AS 4139 AS 1260 AS1379 AS3600 AS3610 AS4671 AS 3996 AS 4198 Precast Concrete Pipes (pressure and non-pressure) Elastomeric Seals for Waterworks Purposes Precast Reinforced Concrete Box Culverts Fibre Reinforced Concrete Pipes and Fittings uPVC Pipes and Fittings - Sewer Application Specification and supply of concrete Concrete Structures Formwork for Concrete. Steel Reinforcing Materials. Metal Access Covers, Road Grates and Frames Precast Concrete Access Chambers for Sewerage Applications 4.2 Materials – Stormwater Drainage 4.2.1 General Materials are to be as specified herein or as otherwise approved by the Superintendent. 4.2.2 Reinforced Concrete Pipes Reinforced concrete pipes for stormwater drains shall conform with AS 4058 “Precast Concrete Pipes-Pressure and Non-Pressure”. Pipes shall be of the class required by trench loading conditions as nominated on the drawings. Pipe classes noted on the drawings are for in service loads only. In cases where the construction loading may exceed design loads, the pipe class may need to be upgraded. Pipes shall be socketed concrete drainage pipes with rubber ring joints. Rubber rings shall conform to AS 1646 “Elastomeric Seals for Waterworks Purposes”. 4.2.3 Box Culverts Precast concrete box culverts shall conform in every respect with AS 1597 "Precast Reinforced Concrete Box Culverts". The box culvert units shall be of the type shown on the drawings. In situ poured base slabs shall be constructed in accordance with the Concrete and Concrete Work section of this specification. Ref No. 20120236SA1 Kingscote Streets Upgrades Technical Specification 13
4.2.4 Concrete Concrete grade for drainage structures shall be as detailed in the drawings and shall comply with AS 1379 – “Specification and supply of concrete”. Installation of concrete shall be as per AS 3600 – “Concrete Structures”. Formwork for drainage structures shall comply with AS 3610 – “Formwork for Concrete ". The concrete for the various parts of the work shall be so designed and produced that the following performance requirements are met: Table 4.1 Concrete requirements for Stormwater Drainage Item f’c at 28 days Slump Box Culvert Base Slabs 32 MPa 80 mm Box Culvert Crown Units 32 MPa 80 mm Drainage structures including junction boxes, side entry pits, manholes etc 32 MPa 80 mm Unless otherwise specified all concrete shall have drying shrinkage test results to AS 1012 showing a maximum (including tolerance) of 650 µm up to and including grade N32, and 700 µm for higher strength grades. All concrete is to be ready mixed and delivered in agitating trucks in accordance with AS 1379 by the batch production process, unless approved otherwise by the Superintendent. 4.2.5 Reinforcement Reinforcement for drainage structures shall be manufactured and supplied in AS4671 – “Steel Reinforcing Materials” class N and installed in accordance with AS3600 – “Concrete Structures” 4.2.6 Covers and Frames Covers and frames for drainage structures will be as per the drawings and in accordance with AS 3996 – “Metal Access Covers, Road Grates and Frames" and AS 4198 – “Precast Concrete Access Chambers for Sewerage Applications” as appropriate. 4.2.7 Bedding Sand Bedding sand shall be Type D Sand in accordance with DTEI Specification Sa-D (formerly known as PM64). Sand used for initial backfilling around pipes shall be suitable for compaction to the specified standards by watering in. 4.2.8 Bedding Aggregate Bedding aggregate shall 10-7 mm Sealing Aggregate in accordance with DTEI Specification SA10-7 (formerly known as PM43). 4.3 Construction and Workmanship 4.3.1 Procedure of Work Work is to proceed from the lowest point to the highest point in each system. 4.3.2 Excavation and Backfilling Excavation and backfilling is to be carried out in accordance with the Site Preparation and Earthworks section of this specification. Unless noted otherwise in the drawings the compaction of bedding and backfilling material shall be as set out in the following table. Ref No. 20120236SA1 Kingscote Streets Upgrades Technical Specification 14
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4.2.4 Concrete<br />
Concrete grade for drainage structures shall be as detailed in the drawings and shall comply with<br />
AS 1379 – “Specification and supply of concrete”. Installation of concrete shall be as per AS 3600 –<br />
“Concrete Structures”.<br />
Formwork for drainage structures shall comply with AS 3610 – “Formwork for Concrete ".<br />
The concrete for the various parts of the work shall be so designed and produced that the following<br />
performance requirements are met:<br />
Table 4.1<br />
Concrete requirements for Stormwater Drainage<br />
Item f’c at 28 days Slump<br />
Box Culvert Base Slabs 32 MPa 80 mm<br />
Box Culvert Crown Units 32 MPa 80 mm<br />
Drainage structures including junction boxes, side<br />
entry pits, manholes etc<br />
32 MPa 80 mm<br />
Unless otherwise specified all concrete shall have drying shrinkage test results to AS 1012 showing<br />
a maximum (including tolerance) of 650 µm up to and including grade N32, and 700 µm for higher<br />
strength grades.<br />
All concrete is to be ready mixed and delivered in agitating trucks in accordance with AS 1379 by the<br />
batch production process, unless approved otherwise by the Superintendent.<br />
4.2.5 Reinforcement<br />
Reinforcement for drainage structures shall be manufactured and supplied in AS4671 – “Steel<br />
Reinforcing Materials” class N and installed in accordance with AS3600 – “Concrete Structures”<br />
4.2.6 Covers and Frames<br />
Covers and frames for drainage structures will be as per the drawings and in accordance with<br />
AS 3996 – “Metal Access Covers, Road Grates and Frames" and AS 4198 – “Precast Concrete<br />
Access Chambers for Sewerage Applications” as appropriate.<br />
4.2.7 Bedding Sand<br />
Bedding sand shall be Type D Sand in accordance with DTEI Specification Sa-D (formerly known as<br />
PM64).<br />
Sand used for initial backfilling around pipes shall be suitable for compaction to the specified<br />
standards by watering in.<br />
4.2.8 Bedding Aggregate<br />
Bedding aggregate shall 10-7 mm Sealing Aggregate in accordance with DTEI Specification SA10-7<br />
(formerly known as PM43).<br />
4.3 Construction and Workmanship<br />
4.3.1 Procedure of Work<br />
Work is to proceed from the lowest point to the highest point in each system.<br />
4.3.2 Excavation and Backfilling<br />
Excavation and backfilling is to be carried out in accordance with the Site Preparation and<br />
Earthworks section of this specification.<br />
Unless noted otherwise in the drawings the compaction of bedding and backfilling material shall be<br />
as set out in the following table.<br />
Ref No. 20120236SA1 <strong>Kingscote</strong> <strong>Streets</strong> <strong>Upgrades</strong> Technical Specification 14
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