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WATER AND SEWERAGE

DESIGN & CONSTRUCTION

SPECIFICATION

Revision 01 - August 2005

Adopted by Works & Facilities Committee

Minute W0M05/132 on 11 October 2005

Last amended 24 October 2005

Prepared by Eurobodalla Shire Water and Waste Department

REVISIONS AND UPDATES

The original Specification (Water and Sewerage Construction: Subdivision Code) wasadopted by Council Minute No 755 on 10 October 1988 and has since been updatedon January 1994.

This revision (01) has been developed following new guidelines produced by Waterservices Association of Australia in 1999 revised in 2002, and to incorporateconstruction of all developments, including subdivisions.

DISCLAIMER

The Water and Sewerage Design & Construction Specification (referred tohenceforward as ‘the Specification’) has been developed on the understanding that:

• Eurobodalla Shire Council and individual contributors and references are notresponsible for the results of any action taken on the basis of information inthe Specification, nor any errors or omissions.

• Eurobodalla Shire Council and individual contributors disclaim all and anyliability to any person in respect of anything, and the consequences ofanything, done or omitted to be done by a person in reliance upon the whole orany part of the Specification and it’s references.

FOREWORD

Aims and Objectives

This Specification aims to set down Council’s normal construction and maintenancestandards. It is equally applicable to Council’s works, all developments andsubdivision works utilising contract plant and labour.

The objectives of the standards in this Specification are:

• to set down benchmarks by which new development infrastructure will beassessed;

• to contain water and sewerage maintenance costs associated with normal usage toacceptable levels;

• to provide a balanced approach between standard of construction and cost to theDeveloper;

• to maintain a working environment that is safe for both the public and thecontractor;

• to set down responsibilities with regard to relevant legislation associated withsafety, noise, pollution, etc.

Council’s normal requirements for development works including water and sewerageconstruction and associated works are included herein.

Responsibilities

Council has set the requirements for development works and it is the role of Council’sEngineer to ensure that works handed over to Council comply with theserequirements. Council has no contract with the Developer and Council’s Engineerdoes not represent the Developer or the contractor. Variations and instructions givenby Council’s Engineer are made in the interests of the long term stability of the works,adjacent works, public safety and with consideration of minimisation of futuremaintenance. These instructions will generally be given to the Developer or hisconsultant.

Council advises the Developer to engage a reputable consultant with appropriateconstruction experience to administer the contract.

Council’s Engineer will not take on the role of consultant in such things as solvingsite problems. Notwithstanding any advice given by Council’s Engineer, it is theresponsibility of the Developer to present to Council for final inspection, works thatwill meet the standards required. The Developer and the Contractor are to carry outthe instructions of the Engineer or his representative to achieve these standards.

Standards and Reference Documents

The provisions of these specifications are to be used as the minimum standard.Attempts to design and construct to minimum standards may lead to the very costlyexercise of reconstruction should the works prove to be unacceptable to Council at thefinal inspection. Special designs or construction standards may be needed in order tosuit special cases.

This Specification is to be read in conjunction with the Eurobodalla Shire CouncilSubdivision Guidelines Manual. For Codes and Standards referred herein, theprecedence of documents is as follows:

1. Water and Sewerage Design & Construction Specification2. Water Services Association of Australia (WSA) Water Supply Code and

Sewerage Code (2002)3. Australian Standards (current revisions)

The importance of the final (Maintenance Release) inspection cannot be overstated. Itwill be after satisfaction of this inspection that Council will formally take over thevarious assets which it will maintain from expiry of the maintenance period.Developments will not be finalised until all the work is complete and approved. Thisincludes approval of Works as Executed plans duly certified by an Engineer and/orRegistered Surveyor.

NOTE:

THESE GENERAL SPECIFICATIONS SHALL BE SHOWN ON ALL DEVELOPMENT PLANSSUBMITTED TO COUNCIL

GENERAL SPECIFICATION : WATER AND SEWERAGE WORKS

1. ALL SEWER PIPES TO BE OF uPVC, TO HAVE A MAXIMUM LENGTH OF 3 METRESAND BE RRJ.

2. ALL SEWER PIPES AT A DEPTH OF 3 METRES OR MORE TO BE “S.E.H.” (SUPEREXTRA HEAVY).

3. ALL SEWER MANHOLES WITHIN THE ROAD RESERVE TO BE “H.T.R.” (HEAVYTYPE ROADWAY).

4. ALL LAYING OF GRAVITATION SEWERS AND RISING MAINS SHALL BE INACCORDANCE WITH TABLE 8.1: WSA SEWERAGE CODE OF AUSTRALIA AND ASTABLED BELOW:

GRADE1 in ‘X’ mm

GRADE%

REQUIREMENT SPACING Sm

1 in 25 to 1 in 67 4 – 15 Trench stops Spacing (m) = 100 Grade (%)

1 in 67 to 1 in 34 15 – 29 Concrete bulkhead S = Lp/Grade(%), whereLp = 80 x Pipe length*, m (450 m max)Where Lp > 100 m – useintermediate trenchstops atspacing < 100 / Grade

1 in 33 to 1 in 20 30 – 50 Continuous concreteencasement of pipelineand concrete bulkheads

S = 100 / Grade (%)

> 50 Special design* Pipe length is the standard pipe length installed (3m lengths)

TRENCH STOPS OR BULKHEADS ARE TO BE LOCATED AND RECESSED INACCORDANCE WITH SECTIONS 17.5 AND 17.6 RESPECTIVELY: WSA SEWERAGECODE OF AUSTRALIA.

5. ALL SEWER MANHOLE COVERS IN AREAS PRONE TO STORMWATERINUNDATION SHALL BE “GATIC” OR APPROVED WATER TIGHT COVERS.

6. ALL CONCRETE ANCHOR AND THRUST BLOCKS ARE TO BE CONSTRUCTED INACCORDANCE SECTION 15.4: WSA WATER SUPPLY CODE OF AUSTRALIA.

7. ALL HYDRANTS AND STOPVALVES TO BE INSTALLED IN ACCORDANCE WITHSECTION 6: WSA WATER SUPPLY CODE OF AUSTRALIA. HYDRANT SPACING TOBE MAXIMUM 50M IN URBAN AREAS UNLESS SPECIFICALLY APPROVED BYCOUNCIL.

.8. PROVIDE HYDRANT AND VALVE MARKERS ETC AS PER DRAWINGS WAT-1300:

WSA WATER SUPPLY CODE OF AUSTRALIA.

9. ALL TESTING AND FLUSHING OF MAINS TO BE CARRIED OUT IN FULL, UNDERCOUNCIL SUPERVISION IN ACCORDANCE WITH SECTION 4.2 (viii) GENERALCONDITIONS.

10. CONTRACTORS SHALL COMPLY WITH THE REQUIREMENTS OF OHS ACT 2000AND REGULATIONS 2001 FOR ALL WORKS.

11. ALL ROAD CROSSINGS TO BE LAID IN ACCORDANCE WITH THE FOLLOWINGDETAIL:

30mm Asphaltic Concrete

125mm Base Course

125mm Sub Base

Sand – Cement Stabilised (2%)

Compacted Suitable Sand100mm Over Pipes

Compacted Suitable Sand100mm Under Pipe

12. COUNCIL TO BE GIVEN 5 WORKING DAYS NOTIFICATION BEFORE ANYCONSTRUCTION STARTS IN ACCORDANCE WITH CLAUSE 4.1 OF GENERALCONDITIONS, SUCH THAT A SITE MEETING CAN BE HELD BETWEENDEVELOPER, CONTRACTOR AND ENGINEER.ALL INSPECTIONS TO BE AS PER CLAUSE 4.1 GENERAL CONDITIONS.

EUROBODALLA SHIRE COUNCIL INSPECTORS CONTACT DETAILS:ROSS CLARK 4472 4125 0427 939 521KEN MURPHY 4474 2474 0418 412 909

13. NOTE: THESE SPECIFICATIONS ARE GENERAL ONLY AND SHALL BE READ ANDAPPLIED IN CONJUNCTION WITH WSA WATER SUPPLY CODE OF AUSTRALIA &SEWERAGE CODE OF AUSTRALIA.ONLY AT THE INITIAL SITE MEETING WILL A TESTING SCHEDULE BECONFIRMED.

CONTENTS

GENERAL CONDITIONS FOR WATER AND SEWERAGECONSTRUCTIONS

Page No.

1. EXPLANATORY 1

2. GENERAL 32.1 Quality 32.2 Approval of Contractors 32.3 Supervision of Works 32.4 Notification to Workcover Authority of

NSW 32.5 Insurance 42.6 Inspection of Works 52.7 Altered or Additional Works 62.8 Defective Works 62.9 Possible Damage to Public Utilities or Property 62.10 Utility Services 62.11 Hours of Work - Noise 62.12 Legal Responsibility and Notification by Council 72.13 Hours for Council Inspections 72.14 Damage to Adjoining Lands 72.15 Details of Bench Marks, Marker Posts and

Permanent Survey Marks, etc 72.16 Site Clearing and Grubbing 82.17 Erosion and Sediment Control 82.18 Clean Waters Regulation 1972/ Protection of the

Environment Operations Act 1997 82.19 Provision for Traffic 82.20 Conditions for use of Explosives 92.21 Confined Spaces Hazards 92.22 Locating Existing Services 9

3. APPROVAL AND/OR TESTING OF WATER ANDSEWERAGE INSTALLATIONS 10

4. INSPECTIONS REQUIRED AND NOTICES TOBE GIVEN BY DEVELOPER (OR CONSULTANT) 114.1 Preliminary Notice and Inspection 114.2 Water and Sewerage Inspection 12

5. CLEARING UP AND RESTORATION 13

6. WORKS AS EXECUTED DRAWINGS 14

7. MAINTENANCE AFTER COMPLETION 15

GENERAL CONDITIONS FOR WATER AND SEWERAGECONSTRUCTIONS

Page No.

1. SPECIFICATION GENERAL 17

1.1 General 171.2 Water Services Association of Australia Codes 171.3 Existing Pipes, Sewers and Other Services 171.4 Materials 18

(a) Pipe Materials - Sewer Mains,Junctions and Sidelines

(b) Pipe Materials - Water Supply(c) Effluent Reuse(d) General

2. CONSTRUCTION OF WATER RETICULATION 20

2.1 Pipelines 202.2 Road Crossings 212.3 Preparation of Pipes 212.4 Pipelaying 212.5 Fittings, Stopvalves and Hydrants 212.6 Markers/Colour Coding 222.7 Concrete Anchor and Thrust Blocks 222.8 Excavation and Backfilling 222.9 Cul De Sac Water Supply 222.10 Testing and Flushing of Mains 222.11 Water Meter Connections 232.12 Footpaths over Watermains 232.13 Work as Executed Records 23

3. CONSTRUCTION OF SEWERAGE RETICULATION 24

3.1 Sewer Mains - Laying and Jointing 243.2 Excavation and Backfilling 243.3 Sidelines and Junctions

(Property Connection Sewers) 243.4 Cover Requirements 253.5 Manholes, Maintenance Shafts and Holes 253.6 Concrete 263.7 Work as Executed Records 26

(a) Sewer Junction Information(b) Ties for Manholes(c) Line Lengths(d) Level of Manholes

3.8 Sewer Pump Stations 27

GENERAL CONDITIONSFOR

WATER AND SEWERAGECONSTRUCTIONS

General Conditions for Water and Sewerage Construction

1. EXPLANATORY

These are the General Conditions of the Eurobodalla Council for water or sewerageconstruction in developments of land in the Council of Eurobodalla. They shall beread and applied in conjunction with the “Special Conditions” of approval which theCouncil will issue for each specified application which it approves involving water orsewerage construction. This document should also be read in conjunction withCouncil’s “Development Manual 1 - Subdivision Guidelines” and Water ServicesAssociation of Australia publications ‘Water Supply Code of Australia’ and‘Sewerage Code of Australia’ and all other State Regulatory Codes and Acts.

The General Conditions and the Special Conditions are imposed:

(a) To enable the Council to ensure that the water or sewerage works proposed tobe built are constructed strictly in accordance with the approved plans andspecifications and in a workmanlike manner consistent with good engineeringpractice so that when the completed works become vested in the Council itwill not involve the Council in any financial expense (apart from theresponsibility of maintenance) nor involve the Council in litigation with otherpersons.

(b) Section 8 is imposed because of the failures which may occur in theconstruction and/or installation of water or sewerage, despite the quality of thework and because in construction works, it is an established practice for amaintenance period to be fixed and for the developer/contractor to beresponsible for any defects which develop or come to notice during thatperiod.

The General Conditions may only be varied by the consent of the Council being firstobtained in writing.

Should any conflict of interpretation arise between any of the documents, thefollowing order of procedure shall prevail:

(i) Plans(ii) Special Conditions of Approval(iii) The Specification(iv) Development Manual 1 - Subdivision Guidelines(v) Water Services Association of Australia (WSA) publications ‘Water Supply

Code of Australia’ and ‘Sewerage Code of Australia’

“Engineer” means the Director of Community Works and Services of EurobodallaCouncil or his representative.

“Council” means the Council of Eurobodalla.

“Developer” means the person to whom the Development Consent was given andincludes his/her agents and contractors.

NOTE:

Approval of Engineering Plans - Engineering design plans will be approved on thebasis of submitted details conforming with Council’s standards and designrequirements, but no responsibility will be accepted for any error not becomingapparent during plan checking, and which leads to adverse consequence at any timeprior to final release.

Plans submitted for approval are to be accompanied by a specification submitted forCouncil’s review.

2. GENERAL

2.1 Quality

It shall be the responsibility of the Developer or his agent to produce orconstruct each element of the work to a standard which will ensure theintended performance of that element as indicated in the approved plans andspecification.

All work carried out and all material supplied shall be of good quality, inaccordance with the approved plans and specifications and to the satisfactionof the Engineer. No departure from the plans is to be made unless authorisedin writing by the Engineer or his representative.

2.2 Approval of Contractors

All construction works shall be carried out by suitably qualified andexperienced persons. Developers are notified that contractors used for waterand sewerage construction must have a proven record of competency in thisfield. The approval of the Engineer is required to the contractor(s) andsupervisory personnel prior to entering into a contract. The Developer isresponsible to submit evidence of the competency of proposed contractor(s)and supervisory personnel.

2.3 Supervision of Works

It shall be the responsibility of Developer or agent to arrange for competentsupervision of the construction of all works, and to ensure their completion inan efficient and workmanlike manner in accordance with the approved plansand specifications and to the satisfaction of the Engineer. This responsibilityshall include the accurate setting out of the works.

Due to the nature of the work Council must reply on the integrity of theDeveloper and the contractor. Any attempt to mislead Council officers shallbe considered a serious breach of the duty owed to the Council. Such breachesmay result in rejection of the work, termination of the right to carry out suchworks and/or civil action.

Council reserves the right to insist upon the employment by the Developer of aClerk of Works or Surveyor as a Supervisor where considered appropriate.The Supervisor shall be required to provide certification of the completedworks and Works as Executed drawings. In the normal case, Council is notresponsible for supervision, but acts as an inspecting/approval authority only.

2.4 Notification to Workcover Authority of NSW

The Developer/Contractor is responsible for compliance with Part 12.3 of theOccupational Health and Safety Regulations 2001 with respect to notificationof commencement of works to Workcover Authority.

The provisions of the Occupational Health and Safety Act are to be strictlyobserved for all forms of construction activities associated with thesubdivision development.

2.5 Insurance

CONTRACTORS - PUBLIC LIABILITY REQUIREMENT

The Contractor must have and maintain the following policies of insurance informs acceptable to, and with insurers approved by the Council:

• (Section 1) - A Broadform Public Liability Policy noting the interests ofEurobodalla Shire Council and containing a cross liability clauseappropriate to the Contractor’s activities for an amount of not less than $10million for any one occurrence in respect of any liability for;

“personal injury or the death of any person; and“loss of or damage to property including property of the Council

• (Section 2) -The Contractor must ensure that each of the Contractor’s sub-contractors and any other persons invited onto a site by the Contractor musthave and maintain insurance’s as per section 1 during periods of theirengagement or presence on site.

• (Section 3) - Workers Compensation Insurance under the WorkersCompensation Act 1987 (NSW) covering all persons employed or deemedto be employed by the Contractor in connection with the activity.

• (Section 4) - Motor Vehicle and Mobile Plant Insurance eithercomprehensive or third party property damage with an indemnity of notless than $5 million covering all plant, equipment and motor vehiclesowned or used by the contractor or owned or used by a subcontractor forthe duration of the contract or whilst engaged in activity on behalf of thecontract.

The Contractor must provide a copy of required insurances prior toengagement and hold the following evidence of insurance covers at its office:

• Up to date certificates of currency for each policy noting the Council as anadditional named insured.

• A copy of each policy duly issued, stamped and signed by the insurer.

If a notice of cancellation is given to the Contractor’s insurance the Contractormust cease to operate on the contract and immediately notify Council.

The Council may conduct random audits to verify insurance’s held by theContractor. The Contractor will assist in the audit and provide evidence of theterms and currency of the insurances whenever requested by Council.

CONSULTANTS - PROFESSIONAL LIABILITY REQUIREMENT

The Consultant must have and maintain the following policies of insurance informs acceptable to, and with insurers approved by the Council:

• (Section 1) - A Professional Indemnity Insurance Policy containing across liability clause appropriate to the Consultants activities for anamount of not less than $10 million which includes a ten-year run-offprotection period. This must be a Policy that is not on a standard“claims made” basis.

• (Section 2) - The Consultant must ensure that each of the Consultant’ssub-contractors and any other persons engaged by the Consultant musthave and maintain insurance as per section 1 during periods of theirengagement.

• The Consultant shall provide to Council evidence of current insurancecover prior to engagement of the project and through the life of theproject, evidence of insurance renewals.

The Consultant must hold the following evidence of insurance covers at itsoffice:

• Up to date certificates of currency for each policy noting the Council asPrincipal;

• A copy of each policy duly issued, stamped and signed by the insurer.

A notation from a brokering firm will not be accepted.

If a notice of cancellation is given to the Consultant’s insurance the Consultantmust cease to operate on the contract and immediately notify Council.

The Council may conduct random audits to verify insurance’s held by theConsultant. The Consultant will assist in the audit and provide evidence of theterms and currency of the insurances whenever requested by Council.

2.6 Inspection of Works

The whole of the works are to be carried out to the satisfaction of theEngineer. The Developer and/or the contractor (s) shall at all times givenuninterrupted access and afford every facility for the examination of anyworks or materials by the Engineer. The Developer shall also give to theEngineer, if requested, information as to the place of manufacture and sourceof supply of materials to be used.

If required by the Engineer, the Developer shall submit any material or workfor testing. The cost of such testing and the making good of the works aftersuch testing shall be borne by the Developer.

2.7 Altered or Additional Works

Where during the progress of construction of water or sewerage works in adevelopment, it is deemed expedient by the Engineer to make minoralterations or additions to the specified works, the Developer shall effect suchalteration or addition as directed by the Engineer by notice in writing, at nocost to the Council.

2.8 Defective Works

If at any time during the progress of the works, the Engineer is of the opinionthat any materials or works are of an inferior or defective description, theremoval or amendment of the same by the Developer or contractor may bedirected at not cost to the Council.

2.9 Possible Damage to Public Utilities or Property

In any approval given by Council to a development involving construction ofwater or sewerage works, Council may require a security to be lodged by theDeveloper to cover the cost of making good any damage to public utilities orproperty caused by the construction works. Any damage to public utilitiesmust be reported by the Contractor to the Authority concerns and all necessaryprecautions must be taken to avoid any further damage until such time as thedamage has been repaired.

Following satisfactory completion of the water or sewerage works, anyunexpected proportion of the security shall be refunded to the Developer.

2.10 Utility Services

Any adjustments to existing utility services are to be carried out by therelevant authority at the cost of the Developer, and these adjustments willnormally be detailed on the approved plans. If any further adjustment orrepairs are required by the Engineer, the Developer is responsible for the costof such adjustments.

2.11 Hours of Work - Noise

Hours of work are restricted to the following as recommended by EPA NoiseControl Guidelines, unless defined by Design Application Special Conditions:

Monday to Friday 7am to 6pmSaturday 7am to 1pm if inaudible on residential premises,

otherwise 8am to 1pmNo construction work to take place on Sundays or Public Holidays.

The Developer and contractor’s attention is drawn to the need to considerpeople living or working in the area of the development, and the use of anyequipment or appliances which generate noise should be confined toreasonably acceptable hours of operation having regard to the area.

Council reserves the right to reduce or further control the permissible hours ofwork where, in its opinion, factors such as undue noise or creation of hazardsor nuisances such ad dust render such restriction desirable in the publicinterest.

2.12 Legal Responsibility and Notification by Council

A contractor carrying out development works is responsible to the Developernot the Council. The Council will therefore hold the Developer solelyresponsible for constructing to its satisfaction the required development worksand maintaining them during any specified period of maintenance. In thenormal case of development, the Developer will employ a ProfessionalConsulting Engineer (or a Surveyor) to act on his/her behalf. Wherenotification by Council is required concerning construction works, this will beissued to the Consultant (or Developer) in writing. Any urgent verbalnotification will be confirmed in writing as soon as practicable.

2.13 Hours for Council Inspections

All works requiring the Engineer’s inspections should be so arranged thatthese inspections are carried out within Council’s normal working hours.

Inspections by the Engineer may be made outside normal Council workinghours, provided that arrangements are made and Council staff are available,and Council costs are paid by the Developer or his contractor, to Council’scashier prior to the inspection. Minimum charges for after hours inspectionsare determined by Council and are subject to variation.

2.14 Damage to Adjoining Lands

The Developer shall obtain any necessary consents or easements fromadjoining owners for the purpose of carrying out the works. If theconstruction of the works has the effect of causing damage or nuisance toadjoining land, the Developer shall e responsible to do all things necessary toabate and/or rectify such damage or nuisance to the satisfaction of theEngineer and the owner of the adjoining land.

2.15 Details of Bench Marks, Marker Posts and Permanent Survey Marks, etc

All Bench Marks, Permanent Survey Marks, and the like within the area ofdevelopment works shall be under the care of the Developer during thecarrying out of these works. If these are disturbed or obliterated by accident orother cause during the progress of the works, they shall be replaced by aregistered Surveyor nominated by the Developer or may, if deemed necessaryby the Council, be replaced by the Council at the Developer’s expense.

It is the Developers responsibility to install all markers in accordance with thisSpecification and Standard Drawing ESC-WW-01.

For indicator and direction change posts for rising mains, either prefabricatedconcrete posts, concrete filled PVC with Y12 bar placed centrally or treatedpine are acceptable. The following dimensions (mm) of the post above andbelow the ground are required:

Above Ground Open areas 1000Cropped areas 1500

Below Ground Soft Ground Open Areas 600 minSoft Ground Cropped Areas 900 minHard Ground 500 minRock 300 min

Colours for marker posts are:BLUE WaterRED SewerPURPLE Recycled Sewage

2.16 Site Clearing and Grubbing

Clearing and/or grubbing and removal of materials from the site shall becarried out in accordance with Specification No. C212 in AUS-SPEC #1Development Specifications Series – CONSTRUCTION.

2.17 Erosion and Sediment Control

Erosion and sediment control for the construction of water mains, sewer mainsand sewer pump stations shall be carried out in accordance with ‘Soils andConstruction – Managing Urban Stormwater’ by Landcom.

2.18 Clean Waters Regulation 1972/ Protection of the Environment OperationsAct 1997

The Developer’s attention is drawn to the provisions of these Acts. Strictcompliance will be enforced by Council with regard to pollution of waterwaysby runoff from construction works.

2.19 Provision of Traffic

During construction and maintenance periods, traffic shall be guided andcontrolled by the use of the appropriate signs, lights, barriers and otherfacilities in accordance with ESC ‘Traffic Control Procedure’ and RTA‘Traffic Control at Work Sites’. A Traffic Control Plan (TCP) must besubmitted to Council 5 working days before construction commences.

2.20 Conditions for Use of Explosives

The Developer or his agent, contractor or the like shall not use explosives inany location without first receiving the permission of the Engineer andsatisfying the requirements of the relevant Statutory Authorities and shallcease to use explosives immediately if so directed by the Engineer. TheDeveloper shall provide a competent and experienced shot-firer who isqualified in NSW by the appropriate authorities to carry out explosive work,together with all blasting mats and necessary equipment to the satisfaction ofthe Engineer.

The shot-firer is required to obtain a blasting permit from Council prior tocarrying out any blasting work.

When carrying out blasting operation, the Developer shall take all properprecautions for the protection of persons, the work and all property and shallbe responsible for any damage or injury done to the works, or to persons or toproperty by blasting and associated works.

2.21 Confined Spaces Hazards

All construction works in confined spaces shall be carried out in accordancewith Division 9: OHS Regulations 2001 and by suitably trained personnel.

2.22 Locating Existing Services

The Developer must locate all existing services prior to commencement ofdesign such that levels and locations of existing services can be incorporatedinto the design before submission to Council.

3. APPROVAL AND/OR TESTING OF WATER AND SEWERAGEINSTALLATIONS

Complete details of approval and testing of water or sewerage installations indevelopments are given in Clause 4.1 General Conditions, and in Section 22:WSA Sewerage Code of Australia and Section 19: WSA Water Supply Codeof Australia.

All water used for the purpose of testing sewerage mains is to be recycled,grey or bore water, provided by the Contractor. Potable water may be used atthe approval of the Engineer.

4. INSPECTIONS REQUIRED AND NOTICES TO BE GIVEN BYDEVELOPER (OR CONSULTANT)

The Developer (or consultant) must gain the Engineer’s approval to proposedcontractor(s) prior to entering into a contract as outlined above. Followingsuch approval at least the following notices in writing and inspections arerequired.

4.1 Preliminary Notice and Inspection

Five working days notice is required of intention to commence work,submitting to Council the contractor’s name and address, the name andaddress of the person or Consultant responsible for supervision, the date ofcommencement of works and a Traffic Control Plan (TCP).

A preliminary site meeting will be arranged before any work is commenced,with the Developer (and/or consultant), the contractor and the Engineer at thesite of the works. A programme of works, time schedule for these works and amaterials and suppliers list is to be provided to the Engineer for review at themeeting. The TCP will also be inspected at the meeting.

If work has to be suspended for a period of seven (7) days or longer, theEngineer shall be notified. He shall be further notified when work is torecommence with at least two (2) working days notice.

All testing will be in accordance with Section 22: WSA Sewerage Code andSection 19: WSA Water Supply Code however at the preliminary site meetingon review of materials and site conditions, a schedule of testing will beconfirmed.

All water used for the purpose of testing is to be recycled, grey or bore water,provided by the Contractor. Potable water may be used at the approval of theEngineer.

4.2 Water and Sewerage Inspections

ITEM TEST DAYS(i) Inspection of pipes and fittings prior to laying 1(ii) When trenches are opened 1(iii) When pipes, manholes and fittings are laid and jointed

prior to backfilling1

(iv) During backfilling and compaction 1(v) Testing of manholes 1(vi) Pressure testing of water and sewer pipes when

backfilled and prior to acceptance1

(vii) Flushing of water mains 1(viii) Bonding inspection REFER NOTE 1 5(ix) Final Construction Inspection REFER NOTE 2 5(x) Maintenance Bond Release Inspection REFER NOTE 3 Automati

c byCouncil

(xi) Other Inspections REFER NOTE 4 ASAGREED

NOTES:1. Prior to release of the linen plan, the water and sewerage works shall be at

least to the following state of completion:

All pipes laid and other components (eg manholes, stop valves,hydrants etc.) on site.

Outstanding water and sewerage works including untested lineswill be bonded, based on the estimated full cost of the contractprice plus 30%.

2. When all works are completed and after the submission of Works asExecuted plans, a final inspection at the site of the works shall be arrangedbetween the contractor, the Developer (and/or Consultant) and the Engineer.This inspection shall include mirror testing of sewer lines and inspection ofmanhole benching and step irons. CCTV testing to be carried out inaccordance with Section 22.7: WSA Sewerage Code. All testing is at thediscretion of the Engineer. The Engineer may require additional workswhere necessary to fully comply with the plans and specifications for theworks. Any defects that develop before the work is finally accepted by theEngineer will have to be remedied, even though the defective work mayhave been previously inspected.

3. A Maintenance bond of 5% total contract price is required by Council, to bereleased 6 months from the date of release of plan of survey.On expiry of the six month maintenance period, the works shall beautomatically inspected and approved prior to release of maintenance bonds.The works are then formally taken over by Council.

4. May be required in special cases of subdivision construction. TheDeveloper/consultant will be informed in each case of these details.

5. CLEARING UP AND RESTORATION

The Developer shall clear and leave tidy the whole of the works as theyproceed in accordance with Section 25: WSA Sewerage Code of Australia andSection 23: WSA Water Supply Code of Australia.

Restore the surfaces of all excavations and all other surfaces disturbed duringthe course of the work to the same condition as existed before the workcommenced. Minimise length of open trenching to reduce exposure time ofsubsoil and ensure a minimum width is disturbed. To reduce the effects of soilerosion progressively topsoil, cultivate and mulch. Subsoil is not to be leftexposed for more than seven (7) calendar days.

Complete backfilling within 24 hours of pipelaying and remove surplusmaterials. All surplus earth as well as all rubbish that may accumulate inexecuting the works shall be removed so as to leave the whole site in a cleanand tidy condition to the satisfaction of the Engineer. All surfaces of footwaysand carriageways are to be restored to their condition previous to trenching.Easements and trenches outside paved areas are to be protected duringconstruction and installation, and subsequently are to be restored to a stablecondition.

Upon completion remove all buildings, offices or workshops which may havebeen erected while carrying on the works, as well as all plant and materials.Clean all road pavements and paved areas, and make good the surfaces, flushwith the surrounding surfaces.

Council reserve the right to take photographic evidence before, during andafter construction works to ensure an equivalent restoration standard ismaintained.

6. WORKS AS EXECUTED DRAWINGS

On completion of the water and/or sewerage construction to the Engineer’ssatisfaction, Work as Executed drawings are required to be submitted toCouncil, and certification is required from the consultant that the water orsewerage construction has been carried out in accordance with the approvedplans and specifications. These drawings and certification are to be submittedprior to the release of the Final Survey Plan for the subdivision, and prior tothe final inspection of the works. All drawings are to be submitted inelectronic format in accordance with Council’s ‘Work As Executed DigitalSpecification’. Certification of all Works as Executed plans shall be providedby the following note on every sheet:

“I certify that all construction has been carried out in accordance with theattached engineering drawings with regard to location and level.

Date: Signed:

Registered SurveyororChartered Engineer”

7. MAINTENANCE AFTER COMPLETION

Upon the completion of water and sewerage construction, includingrestoration to the satisfaction of the Engineer, the Developer shall lodge withCouncil a maintenance bond (or irrevocable Bank Guarantee) set at 5% totalcontract price. This bond must be received prior to the release of the FinalSurvey Plan for the development and after the Engineer has certified that thework has been satisfactorily completed.

Notwithstanding the above, the minimum maintenance bond on any worksshall be five hundred dollars ($500) or such sum as Council may determinefrom time to time.

The maintenance bond will be held by Council to cover any defects whichmay arise in the works for the six months maintenance period, commencingfrom the date of release of the plan of survey.

During the six month maintenance period any defect notices will be brought tothe attention of the Developer or Consultant. If defects are not rectified to thesatisfaction of the Engineer within one month after the expiration of themaintenance period, the Council shall be at liberty to rectify these defects andapply the maintenance bond to the cost of this rectification. Any unexpendedbalance of cash bonds will be refunded to the Developer and any unexpendedbalance of Bank Guarantees will be released.

For the purpose of this Section the word “defects” means and shall include inrelation to this work, any signs of weakness or of giving way, or if anylandslide occurs or tree falls across the work of if any defective workmanshipor material is detected or any injury caused to adjoining land.

SPECIFICATIONSFOR

WATER AND SEWERAGE WORKS

Specification for Water and Sewerage Works

1. SPECIFICATION GENERAL

1.1 General

The specification is a guideline to cover water and sewerage works todevelopments in both urban and rural areas. The relevant sections of thespecification may apply to the particular type of development as detailed in theplans for the development concerned.

The Developer and/or contractor are notified that they should be familiar withthe “General Conditions for Water and Sewerage Construction inDevelopments” and that the requirements of those General Conditions arebinding on the Developer and/or contractor. Similarly, the Developer and/orcontractor are to be familiar with WSA Sewerage Code of Australia and WaterSupply Code of Australia frequently referred to in this document.

Where deemed necessary, the Engineer may require a geotechnicalexamination to be conducted over part or all of the site of the land to bedeveloped. The examination will be to establish if special constructionstandards and techniques are required.

“Engineer” means Director of Community Works and Services or hisrepresentative.

1.2 Water Services Association of Australia Codes

The following codes of the Water Services Association of Australia shall formpart of this Specification:

WSA 02-2002 Sewerage Code of Australia

WSA 03-2002 Water Supply Code of Australia

1.3 Existing Pipes, Sewers and Other Services

During the excavation of works, the Developer shall take every precautionthat, in the opinion of the Engineer, is necessary to secure from injury theexisting water or drainpipes, sewers, electric conduits or other existing works,wherever met with or that are adjacent to these works, and shall maintain thesame until, in the opinion of the Engineer, the refilling of excavation and thegeneral progress of the works render further precautions unnecessary. Alldamage to existing water, or drainpipes, sewers, electric conduits or otherexisting works or services, shall be repaired to the satisfaction of the Engineerand/or the Utility Authority concerned.

Where it is found necessary to remove, divert or cut into any existing sewer,drain, water main, service pipes, electric conduit or other existing work, thesubdivider shall negotiate with the relevant Authority at the earliest and mostpractical date (after the approval of plans) for the removal or deviation of suchworks when necessary. The Developer shall lay bare and clear round thesewers, pipes or other existing works when and as directed, but they will becut, removed, diverted or relaid by the relevant Authority respectively, ifrequired by that Authority. All charges will be borne by the Developer.

This includes cross-connection or “cut-ins” to existing water and sewerageservices, which will be done by Council staff at full cost to the developer.

1.4 Materials

(a) Pipe Materials - Sewer Mains, Junctions and Sidelines

The following pipe materials may be used for sewer reticulation mains:

- unplasticised PVC (uPVC) in 3 meter lengths RRJ- ductile iron cement lined (DI) (in special circumstances).

Thick walled uPVC shall be laid from the nearest manhole to the next manholeif the trench depth exceeds 3.0 metres at any part of that sections.

All PVC pipes shall be Rubber Ringed Jointed (RRJ).

Not withstanding the above, for principal gravity sewer pipeline systems referto Section 10.6 and Tables 10.1 and 10.2: WSA Sewerage Code of Australia.For principal sewerage pressure pipeline systems refer to Tables 10.3 and10.4: WSA Sewerage Code of Australia.

(b) Pipe Materials - Water Supply

The following pipe materials may be used for water reticulation mains:

- modified PVC (MPVC) Class 12 depending on mains pressure (Class 9not acceptable)

- ductile iron (light cement lined) K9 DI, orother materials approved by Council

All PVC pipes shall be Rubber Ringed Jointed (RRJ).

Not withstanding the above, materials for principal water pipeline systems areto be in accordance with Section 8.6 and Tables 8.1 and 8.2: WSA WaterSupply Code of Australia.

(c) Effluent Reuse

HDPE Electro welded or butt welded pipes only to be used.

(d) General

Pipes should comply with the appropriate Australian Standards Associationcodes, compliance being tested by an approved Authority.

The manufacturer’s instructions are to be followed in transporting, handlingand storage of pipes. UPVC pipes should be stored in a cool shaded place, asdeterioration is rapid when the material is exposed to part of the ultra-violetspectrum.

Materials and workmanship shall be the best of their respective kinds andunless otherwise specified, shall conform to such standard specificationsissued by the Australian Standards Association as may be held to apply.Where no Australian Standard has been issued, the appropriate BritishStandard Specification shall apply.

The Developer must consult with the Engineer as to the type and use of thematerials to be brought to the site. Prior to the commencement of work, a listof materials and suppliers shall be submitted to the Engineer for approval.

At least one day’s notice shall be given by the Developer to the Engineer toenable any materials that are brought on the ground to be examined and allmaterials to be suitably stacked to facilitate examination.

In the event of the Developer supplying materials of a mixed description andquality, the Engineer shall have power to require the Developer to pick out andstack, where directed, those materials which are considered suitable for theworks and to have those unsuitable removed from the site of the works.

In the event of the Developer refusing or failing to comply with such requestwithin twenty-four hours from the time it has been made, the Engineer shallhave the power to reject the whole of the materials so delivered by theDeveloper.

Whenever directed by the Engineer, samples of materials of the required size,number and description shall be supplied by the Developer at the place wheretests are to be made, as directed, and submitted to be tested as specified and tosuch additional tests as may be prescribed from time to time by the Engineer.All tests carried out are to be at the Developer’s full cost.

If any of the materials tested do not fully comply with the standards hereinindicated then all materials or similar manufacture and all articles madetherefrom may be rejected, in which case they shall be at once removed fromthe works by the Developer upon receipt of instructions from the Engineer andreplaced by new and sound materials or articles which shall be again tested ifrequired.

Imported materials shall bear the manufacturer’s brand.

2. CONSTRUCTION OF WATER RETICULATION

All water supply construction and installation works are to be in accordancewith the following sections of WSA Water Supply Code of Australia:

Section 9 GENERALSection 10 QUALITYSection 11 GENERAL CONSTRUCTIONSection 12 PRODUCTS AND MATERIALS

Specific requirements of Eurobodalla Shire Council are detailed below:

2.1 Pipelines

All work should be carried out in accordance with Part 3; WSA Water SupplyCode of Australia.

Cover Requirements:

Not subject to vehicular loading 450mmSubject to vehicular loading

- sealed roadway/shoulder 600mm- unsealed roadway 1200mm- not in roadway 600mm

For pipes laid in roads yet to be constructed the minimum cover shall bemeasured from subgrade level. All road crossings to be laid in accordancewith the following detail:

30mm Asphaltic Concrete

125mm Base Course

125mm Sub Base

Sand – Cement Stabilised (2%)

Compacted Suitable Sand100mm Over Pipes

Compacted Suitable Sand100mm Under Pipe

Mains shall generally be located within the allocated space for water mains(2.4m from property boundary) as depicted on Plan M2856 of Council’sSubdivision Guidelines Volume 1, however, where a footpath is proposed a1.2m off-set is required from the property boundary (in the space allocated forgas lines).

2.2 Road Crossings

All road crossings are to be completed prior to the road being paved.

All road crossings are to be minimum size 100mm DICL, Blue Brute orequivalent.

Water supply pipes to be placed under road pavements are to be installed inthe initial stage or road construction.

2.3 Preparation of Pipes

The Developer is to properly stack all pipes according to the manufacturer’srecommendations, to avoid damage prior to use. The pipes should be cleanedon the inside by the use of appropriate scrapers or brushes before being placedin position. Each pipe should be examined to see whether it is sound. At theconclusion of each day’s pipelaying, all openings should be plugged to keepthe system clean.

2.4 Pipelaying

Laying and jointing of pipes, fittings and valves shall be carried out inaccordance with the manufacturer’s instructions.

Where required, approved granular or sand bedding is to be placed andcompacted on the trench base, including indentations to accommodate the pipecouplings or collars, in accordance with WSA Standard Drawing WAT-1201.

2.5 Fittings, Stopvalves and Hydrants

Stop valves and hydrants are to be enclosed in a brick chamber or othermaterial approved by Council to identify their location, protect the fittings andmake them readily accessible. Brickwork is not to bear on the pipeline.Drainage lines from valve chambers are to be constructed in approved pipewith rubber ring joints.

Valves and hydrants are to be installed in accordance with Standard DrawingWAT- 1303.

Hydrant spacing to be a maximum 50m in urban areas. Non- urban areas to beas requested by Council to suit layout of development.

Each valve is to be installed with its axis vertical, and clockwise closing.Standard cast iron surface boxes with suitable surrounds are to be providedand installed at all valves and hydrants.

2.6 Markers/Colour Coding

The Developer is responsible for installing all standard stop valve and hydrantmarkers in accordance with. drawing WAT-1300: WSA Water Supply Code ofAustralia and Standard Drawing ESC-WW-01.

Surface boxes and surrounds are to be painted white for stop valves andyellow for hydrants.

Rural properties to have marker posts as per Standard Drawing ESC-WW-01.

Where kerbs have been constructed, stop valves and hydrants are to beidentified by painted markings on road and kerb. Marking colours are to be asfor surface boxes.

Where kerbs have not been constructed (non urban areas) standard stop valveand hydrant markers are to be fixed to suitable posts, installed adjacent to theroad reserve/property boundary and in line with the applicable fitting and roadmarking.

2.7 Concrete Anchor and Thrust Blocks

Concrete blocks are to be installed to prevent movement of the pipes orfittings. Concrete is to be delivered and placed in accordance with Section12.5:WSA Water Supply Code of Australia. Steeply inclined pipes withflexible joints are to be secured by approved transverse anchors (where gradesare in excess of 1 in 6).

2.8 Excavation and Backfilling

Trenching and backfilling operations are to conform to Section 13 and Section17.1: WSA Water Supply Code of Australia respectively.

Topsoil shall be stripped and stockpiled for later restoration of excavatedareas.

Backfilling and compaction shall be carried out without in any way damagingthe pipe, or producing any movement in the pipe.

2.9 Cul De Sac Water Supply

Water mains are not to be terminated in Cul De Sacs. All lines are to becirculated around the Cul De Sac and returned to the main line.

2.10 Testing and Flushing of Mains

All water mains are to be pressure tested by the Developer in accordance withSection 19.4: WSA Water Supply Code, in order to detect and repair excessive

leakage and defects in the pipeline. Pipes are to be cleaned before pressuretesting as detailed below.

Testing of new mains to be supervised by Council staff. Service connections,where applicable, are to be subjected to the same test pressure as water mains.

In the case of all uPVC water mains, the following procedure for flushing themains is to be carried out in full and under Council supervision.

Flush lines as directed by the Engineer in accordance with Section 20.2: WSAWater Supply Code.

2.11 Water Meter Connections

In major infill and dual occupancy sub-division works or similar, a 25mmdiameter hard drawn copper water meter connection pipe is to be installed,600mm within each property boundary. The meter connection is to be finishedas per a standard connection but capped off without a meter. This way theconnection can be closed off at the take-off and opened up when requested bythe occupier. This connection point can be located at either left or right sideboundary.The installation is to incorporate a 100mm diameter uPVC pipe and pathbox toprovide access to the tapping band and TPFNR Bonnet Ferule.

2.12 Footpaths Over Watermains

Where footpaths are to be constructed over the water mains, all water meterconnections (25mm) to this water main along the entire length of theconstructed footpath are to be connected during construction of this watermainsimilar to Clause 2.11 Water Meter Connections.

2.13 Work as Executed Records

Work as Executed plans shall be progressively prepared and submitted inelectronic format at finalisation of the water supply works, for approval by theEngineer.

Details recorded on the plans shall comprise:

- final sizes and locations of pipes, valves, hydrants and bends tied toproperty boundaries and changes in pipe diameter located.

- in the case of trunk mains long sections at 1:1000 horizontal, 1:200vertical scale.

3. CONSTRUCTION OF SEWERAGE RETICULATION

All sewerage construction and installation works are to be in accordance withthe following sections of WSA Sewerage Code of Australia:

Section 11 GENERALSection 12 QUALITYSection 13 GENERAL CONSTRUCTIONSection 14 PRODUCTS AND MATERIALS

Specific requirements of Eurobodalla Shire Council are detailed below:

3.1 Sewer Mains - Laying and Jointing

Construction of sewer mains should be carried out in accordance with Part 3:Construction, WSA Sewerage Code of Australia.

Laying and jointing of pipes, fittings and manholes shall be carried out inaccordance with the manufacturer’s instructions.

Where required, approved granular or sand bedding is to be placed andcompacted on the trench base, including indentations to accommodate pipecouplings or collars, in accordance with WSA Standard Drawings SEW- 1201and 1202.

3.2 Excavation and Backfilling

Trenching and backfilling operations are to conform to Sections 15 and 21.1respectively of WSA Sewerage Code of Australia. Road crossings to conformto drawing M4400.

When a riser is constructed for a sideline or junction, backfill around the risershall be compacted for the full width of the trench on each side of the riser toensure satisfactory support for the pipes and riser. Backfilling and compactionshall be carried out without in any way damaging the pipe, or producing anymovement in the pipe.

3.3 Sidelines and Junctions (Property Connection Sewers)

Sidelines are to conform to Section 17.7 PROPERTY CONNECTIONSEWERS: WSA Sewerage Code of Australia, excluding drawing SEW-1106.For details of connections to Council’s sewerage mains refer to StandardDrawing ESC-WW-02. The minimum grade normally is to be 1.67%; and themaximum length is to be 10m. Any side line longer than 5m shall be providedwith a slope junction at the upstream end. The property may be connectedthrough the branch or the main leg of that junction and the marking tapeattached there to. Sidelines are to terminate within the property being served.

Junctions shall be provided in sewer mains for all properties. Sidelines andjunctions are to be at such a level as to properly drain the property and permit

the connection of future dwellings in accordance with the National Plumbingand Drainage Code and Australian Standards.

All open ends of sidelines, risers and junctions shall be sealed. The stoppedends are to be held in position by an approved method, so that they willwithstand the pressure applied during testing of the lines. Plugs shall be fixedto sockets in accordance with the manufacturer’s instructions.

The location of the end of each sideline is to be clearly marked by theContractor as per Drawings SEW-1107 and 1109: WSA Sewerage Code ofAustralia, immediately on completion of the sideline and before backfilling iscarried out.

When the sideline ends inside or at a property boundary, the marking shall belocated over or adjacent to the end of the sideline.

Where a substantial fence or similar appropriate object exists at the locationdefined above, the marking shall be made on it.

Any excavation or other work by Council staff necessary to recover thelocation of junctions during the maintenance period shall be carried out at theDeveloper’s expense.

3.4 Cover Requirements

The following minimum cover is required for sewerage mains up to 300mmdiameter:

Location of Gravity Sewers Rising MainsPipes All Pipes & Classes inc uPVC Class SH uPVC OtherAreas not subject tovehicular loading 450mm 450mm 450mm

Areas subject tovehicular loading

- not in roadway 600mm 600mm 600mm- in sealed roadway 750mm 600mm 600mm- in unsealed roadway 1200mm 1200mm 1200mm

NOTE: The above cover requirements are as stipulated by Council and takeprecedence over WSA requirements.

3.5 Manholes, Maintenance Shafts and Holes

Pre-cast manholes should conform with Section 18.4: WSA Sewerage Code ofAustralia. Maintenance Holes (lampholes) and Shafts are to be in accordancewith Sections 18 and 19: WSA Sewerage Code of Australia respectively, andSEW-1300 series drawings.

In situ concrete manholes are to conform with Section 18.5: WSA SewerageCode of Australia.

Step irons in manholes are to be galvanised and installed as per StandardDrawing SEW-1307: WSA Sewerage Code of Australia.

To minimise the effects of settlement, flexible joints are to be incorporated inmanhole walls and again in the pipeline at 0.6m from the walls of themanhole.

Manhole covers shall be finished 25mm above the pavement surface infootways, and maximum 75mm above ground level in private property or suchother level as directed, in a manner designed to avoid as far as possible theentry of surface water.

All manhole channels and benches shall be as per Section 18.6: WSASewerage Code of Australia and floated to a dense smooth finish (F3 finish).

All concrete manhole covers shall be sealed by the insertion of compriband orother approved sealing strip. Grease or other semi-liquid sealing compoundswill not be approved.

3.6 Concrete

Concrete compounds used in the sewerage system, which may come intocontact with sewerage, are to be made using cement Type C or Type D, asappropriate.

Concrete is to be Special Class, minimum Grade 20.

3.7 Work As Executed Records

Work As Executed plans and long sections shall be progressively prepared andsubmitted at finalisation of the sewerage works, for approval by the Engineer.

Details shall be submitted in electronic format in accordance with Council’s‘Work As Executed Digital Specification’, and shall comprise:

(a) Sewer Junction Information

Typical notation is:

25.1VJ(1.5)P

where 25.1: length from downstream manhole to junction inmetres

V: indicates riser

J: junction

(1.5): depth of junction or depth at end of sideline inmetres

P: sideline to property boundary

(b) Ties for Manholes

(i) All manholes should be tied in to property boundaries.

(ii) Square off ties are preferred, e.g. 2.00 S.O.

(iii) Tie distances should not exceed 30m.

(c) Line Lengths

The measured length of line between manhole centrelines is to beshown on plan e.g. (64.2).

(d) Level of Manholes

Reduced level of manhole inverts, dead ends and sideline inverts.

Degree of Accuracy in the above measurements shall be:

- Junction depth 1 decimal- Line lengths 1 decimal- Ties 2 decimals- Junction distance 1 decimal

- Long section levels 2 decimals

3.8 Sewer Pump Stations

All sewer pump stations shall be designed and constructed according toCouncil’s “Sewage Pumping Station Design and Construction Specification”.

This shall be read and applied in conjunction with the “Special Conditions” ofapproval which the Council will issue for each specified application which itapproves involving sewerage construction.

DEEP CONNECTION

SHALLOW CONNECTION

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EUROBODALLA SHIRE COUNCIL

MARKERSAND STOPVALVE

LOCATION FOR HYDRANTSTANDARD