06051 manor 2 plumbing spec rev02 16032007

8/17/2019 06051 Manor 2 Plumbing Spec Rev02 16032007

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BPS ♦ 06051 ♦ Revision 02 Date of Issue: 15.03.2007

Technical Specification

PLUMBING & DRAINAGE SERVICES

Project

THE MANOR IN HCMC – PHASE 291 NGUYEN HUU CANH – BINH THANH – HCMC

Client

BITEXCOLAND

Consultants

PROJECT MANAGEMENT: COTEBA MANAGEMENT

QUANTITY SURVEYORS: LEVETT & BAILEY

PROJECT ARCHITECTS: HO THIEU TRI ARCHITECTS & ASSOCIATES

STRUCTURAL ENGINEERS: PIMENTEL & ASSOCIATES

FOUNDATION ENGINEERS: CTFE

MECHANICAL & ELECTRICAL ENGINEERS: BONWAY PROJECT SERVICES (BPS)


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THE MANOR IN HOCHIMINH CITY – PHASE II

TECHNICAL SPECIFICATION - PLUMBING AND DRAINAGE SERVICES

TABLE OF CONTENTS

Page No.

BPS ♦ 06051 Revision 02

1.

SCOPE OF WORK..................................................................................................................... 1

1.1 PROJECT DESCRIPTION.............................................................................................. 1

1.2 SERVICES DESCRIPTION............................................................................................. 1

1.3 DEFINITION OF TERMS ................................................................................................ 1

1.4 EXTENT OF WORK........................................................................................................ 2

1.5 SCHEDULE OF DRAWINGS ..........................................................................................2

2. CO-ORDINATION AND WORK BY OTHER TRADES .............................................................. 3

2.1 CO-ORDINATION ........................................................................................................... 3

2.2 WORK BY OTHERS ....................................................................................................... 3

3. DESIGN REQUIREMENTS........................................................................................................ 4

3.1 AUTHORITIES REQUIREMENTS ............ ............ ............. ............ .............. ............ ....... 4

3.2 STANDARDS.................................................................................................................. 4

3.3 QUALITY ASSURANCE.................................................................................................. 4

4.

GENERAL REQUIREMENTS....................................................................................................5

4.1 SITE INSPECTION ......................................................................................................... 5

4.2 STATUTORY REQUIREMENTS AND STANDARDS.....................................................5

4.3 WARRANTIES ................................................................................................................5

4.4 SPECIFICATION AND DRAWINGS.............. ............ ............. ............ ............. ............ .... 6

4.5 DISCREPANCIES & OMISSIONS .................................................................................. 6

4.6 SETTING OUT OPENINGS AND MAKING GOOD............ ............. ............ .............. ...... 6

4.7 POSITIONING OF OUTLETS AND EQUIPMENT .......................................................... 6

4.8 CO-ORDINATION OF INSTALLATION....... ............ .............. ............ ............. ............. .... 6

4.9 PERFORMANCE AND GUARANTEE........... ............ ............. ............. ............. ............. .. 7

4.10 WORKING DRAWINGS.................................................................................................. 7

4.11 AS-INSTALLED DRAWINGS............ ............ ............. ............. ............. ............ ............. .. 7

4.12 EQUIPMENT DEVIATIONS............................................................................................ 8

4.13

PACKAGED EQUIPMENT.............................................................................................. 8

4.14 SAMPLES AND PROTOTYPES ..................................................................................... 8

4.15 RADIO INTERFERENCE................................................................................................ 9

4.16 WORKMANSHIP AND MATERIALS............................................................................... 9

4.17 PRECAUTIONS IN CARRYING OUT WORKS............... ............. ............. ............. ....... 10

4.18 SCAFFOLDING AND LIFTING EQUIPMENT............................................................... 10

4.19 SEALING OF PENETRATIONS.................................................................................... 10

4.20 FIXINGS AND PLUGS.................................................................................................. 11

4.21 STORAGE AND PROTECTION......... ........... .............. ............ ............. ............ ............. 11

4.22 SITE CLEANLINESS AND REMOVAL OF RUBBISH..... ............. ............ .............. ....... 12

4.23 DIMENSIONS ............................................................................................................... 12

4.24 ACCESS TO SERVICES ........... ............. ............ ............ ............. ............ ............. ........ 12

4.25 PIPE SLEEVES............................................................................................................. 12

4.26

EXPANSION .................................................................................................................12

4.27 CAPPING OFF.............................................................................................................. 13

4.28 FIXING AND SUPPORT OF SERVICES ...................................................................... 13

4.29 IDENTIFICATION OF PLUMBING SERVICES............................................................. 14

4.30 PIPE IDENTIFICATION COLOURS.............................................................................. 14

4.31 CHROMIUM PLATING.................................................................................................. 14

4.32 POLISHED SURFACES PROTECTION....................................................................... 14

4.33 GRADIENTS .................................................................................................................15

4.34 EXISTING PIPES, SEWERS AND OTHER SERVICES ...............................................15

4.35 EXISTING SERVICES .................................................................................................. 15


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THE MANOR IN HOCHIMINH CITY – PHASE II


TABLE OF CONTENTS

Page No.


13.

TESTING AND COMMISSIONING ..........................................................................................39

13.1 TESTING....................................................................................................................... 39

13.2 COMPLETION .............................................................................................................. 39

13.3 TESTING GENERAL..................................................................................................... 39

13.4 HYDROSTATIC TESTING............................................................................................39

14. SERVICE AND MAINTENANCE.............................................................................................. 41

14.1 SCOPE.......................................................................................................................... 41

14.2 SERVICE ...................................................................................................................... 41

14.3 SERVICE REPORTS .................................................................................................... 41

15. OPERATING AND MAINTENANCE MANUALS...................................................................... 42

15.1 GENERAL..................................................................................................................... 42

15.2 MANUAL CONTENTS................................................................................................... 42

15.3 AS INSTALLED DRAWINGS ........... ............. ............ ............. ............ ............. ............ .. 43

APPENDIX A – SCHEDULE OF TENDER DRAWINGS

APPENDIX B – SCHEDULE OF TECHNICAL DATA

APPENDIX C – VIETNAMESE TRANSLATION


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THE MANOR IN HOCHIMINH CITY – PHASE II Page 1



1.

SCOPE OF WORK

1.1

PROJECT DESCRIPTION

The Manor phase 2 project a new building and located at 91Nguyen Huu Canh Street,Binh Thanh District – Ho Chi Minh City.

The project will comprises 3 basements, 2 Podium floors and 2 Residential & OfficeTowers of 30 storey high and 16 storey high with constructional details as below:

Tower Level Usage GFA

A & B Basement 3,2 & 1 Car Parking & Technical Rooms 14,533 m2

A & B Ground & 1st floor Retails, Restaurant and Entertainment 6,278 m2

A 2nd ~ 24th floor 458 Offitel Type A, A1, B, C, D, E 21,757 m2

A 25th floor Outdoor Swimming Pools, Gym 436 m2

A 26th ~ 29th floors 21 Offitel Type N, O, P, Q, R 2,762 m2

B (gl 8~13) 2nd ~ 13th floors 48 Offitel Type F 3,883 m2

B (gl13~15) 2

nd ~ 16 floors96 Offitel Type G, H, I, j, K, L, M, G1,I1, K1, L1

7,505 m2

Total Construction Area: 57,154 m2

1.2

SERVICES DESCRIPTION

The services cover under this specification is for the supply, installation, testing &commissioning and maintenance during defect liability period of Plumbing andDrainage system including Water Supply Treatment Plant, Cold Water Supply, WasteWater Drainage systems

The service shall include the Local Water Supply Department and EnvironmentalProtection Department approvals and practical completion certificates.

1.3

DEFINITION OF TERMS

The following definitions apply to the terminology used in this specification andassociated drawings.

Owner/Principal: BITEXCOLAND

Project Management: COTEBA MANAGEMENT

Quantity Surveyor: LEVETT & BAILEY

Architect Consultant: HO THIEU TRI ARCHITECTS & ASSOCIATES

Civil / Structural Consultant: CTFE / PIMENTEL & ASSOCIATES

M&E Consultant: BONWAY PROJECT SERVICES (BPS)

The Contractor: The M&E Trade Contractor appointed to carry out thework covered in the services specifications anddrawings.

Approval/Approved: Subject to the approval of the Owner/Principal orPM/Consultants.


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1.4

EXTENT OF WORK

This specification, unless specifically stated otherwise, calls for the provision of

systems complete in every respect, fit and ready for continuous, safe, efficientoperation. The Sub Contractor shall therefore supply, deliver, install, test, commissionand set to work the systems and they shall be complete with all necessary ancillaryand minor items, whether expressly indicated on the drawings or specification or not.

(a) Obtain approvals, permits and final certificates from controlling Authorities.Supply completed self certification Compliance Certificate at the completion ofthe works.

(b) Arrange and liaise with the controlling Authorities for tappings and branches to becompleted so that there is no delay to the building program.

(c) The Sub Contractor shall supply shop drawings for approval to the Consultantprior to installation.

(d) Cold Water Service.

Supply and installation of all water services including water pumps, tridents,valves and reticulation pipework throughout the building.

(e) Flushing Water Service.

Supply and installation of all flushing water services including tanks, levelcontrollers, valves and reticulation pipework throughout the building.

(f) Sanitary Plumbing and Vents.

Supply and installation of all sanitary plumbing, waste and vent pipework.Connect to sewer drain.

(g) Sewer Drainage Reticulation.

Supply and installation of the complete sewer drainage system including WasteWater Treatment Plant.

(h) Acoustic treatments to above ground pipework.

(i) Perform all tests and arrange all inspections required by Authorities andConsultant.

(j) Testing, commissioning, maintenance and defects liability for the plumbing work.This shall include:

● Defects liability for 52 weeks from date of Practical Completion.

● Maintenance during the defects liability period.

(k) Provision of 4 sets of Operating and Maintenance Manuals, including as-installeddrawings and all testing and commissioning data.

It is intended that this specification shall include all work required to complete theinstallation in accordance with AS3500 and to the satisfaction of the local authoritiesand the Consultant whether mentioned in detail or not within the specification. Theextent of the works is indicated in general terms on the accompanying drawings whichform part of this specification

1.5

SCHEDULE OF DRAWINGS

The drawings as listed and enclosed in Appendix A shall be read in conjunction withthis specification


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2.

CO-ORDINATION AND WORK BY OTHER TRADES

2.1

CO-ORDINATION

The Sub Contractor shall co-ordinate and supply all necessary information as requiredto the Main Contractor and his nominated Contractors so that works can be carriedout without undue delay to the construction programme.

Any additional work occasioned by lack of co-operation between The Sub Contractorand the Main Contractor or any other Contractor will not be considered as a variationto the Contract or as grounds for extension of time.

The Main Contractor will be responsible for checking all Contract penetration drawingsand for negotiating with the various Contractors for amendment of penetrationrequirements as necessary.

2.2

WORK BY OTHERS

● The site to be fenced and space made available for sheds.● Temporary 220 volt and 380 volt power supply, toilets and water.

● Assistance setting out.

● Keeping site clean, removal of rubbish,

● Removal of redundant equipment from site.

● Excavation and back fill for services between buildings.

● De-watering excavations.

● Provision of holes as required for the entrance, installation and access ofequipment, and piping.

● Provision of Concrete Water Storage Tanks, Septic Tank as indicated in thePlumbing and Drainage drawings

● Concrete pits for specific items of equipment with drains.

● Concrete trenches with access pits for pipework, graded, with drains.

● Casting-in of holding down bolts to templates provided.

● Building in of unistrut pipe supports.

● Building in of pipe sleeves.

● Access to roof for maintenance.

● Fixing of flue guy anchors.

● Making good around pipes etc. including cutting of ceiling tiles.

● Access panels in non-demountable ceiling to pipework.

● Access panels in demountable ceiling to high maintenance items.

● Removal and replacement of ceiling tiles for access to pipework.

■ during commissioning period.

■ for defects occurring during defects liability period.■ for final inspection and commissioning.

● Roof penetrations and upstand flashing, the Main Contractor to provide theunderflashing, Contractor to provide the overflashing.

● Painting of pipework in occupied areas.

● Supply and installation of timber noggins in walls for the fixing of fixturesand tapware.

● Protection of sanitary fixtures and fittings during construction.


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3.

DESIGN REQUIREMENTS

3.1

AUTHORITIES REQUIREMENTS

The work shall be in accordance with all requirements of the following authorities:

● Local Water Supply Department

● Local Environment Protection Department

● Any other Authority having jurisdiction from time to t ime.

This Contractor is to allow in his tender for all fees and charges, payable to theabove authorities, to complete these Contract works.

The Sub Contractor shall be responsible for:

● Submission of all plans and applications as necessary to all Authoritiesholding jurisdiction over the installations.

● Obtaining all necessary certificates and permits prior to commencing anywork.

● Paying all fees and lodging all notices required by the Authorities.

● Obtaining approvals and certificates as necessary and lodge with theConsultant before making application for a Certificate of PracticalCompletion.

If any doubt exits as to whether a section of the design is able to comply with therelevant authorities regulations, the Consultant shall be notified prior to thecommencement of any work. No consideration of claim for redundant work shallbe given if the Consultant is not notified.

3.2

STANDARDS

The plumbing services shall be designed and installed in accordance with Australian standards and Vietnamese Regulations, including but not limited to:

● Relevant Water Supply Authority requirements● Relevant Vietnamese Standards as specified in section 4.2 of this

specification

● Local Authority requirements

3.3

QUALITY ASSURANCE

The Sub Contractor shall provide before any works commence a detailed Quality Assurance Program which records all checking procedures and tests during theconstruction phase of the works. This program shall be available at all times onsite for review. The Sub Contractor shall comply with the following and anyother relevant Australian Codes and Vietnamese Regulations.


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4.

GENERAL REQUIREMENTS

4.1

SITE INSPECTION

Tenderers must inspect the site to familiarise themselves with the conditionsthereupon prior to Submission of tender. Confirmation of site inspection shall beSubmitted with tender.

4.2

STATUTORY REQUIREMENTS AND STANDARDS

Australian Standards and Codes current at the date of tendering and also referenceCodes and Standards listed in the prefaces to those Standards and Codes areapplicable in respect of all materials and workmanship except where in conflict withthe provisions of these specifications.

Where Australian Standards and Codes do not existing the appropriate BritishStandard or Code shall apply. Where this specification expressly requires standardshigher than or different from those applicable under the relevant Standard or Code

documents, this Specification shall be followed.

Advise all Subsequent amendments to applicable codes as they come into forceduring the work and seek a direction regarding compliance for this project.

All work shall comply with the:

TCVN 4474 Tieâu Chuaån Thieá t keá heä thoá ng thoaùt nöôùc beân trong

TCVN 4473 Tieâu Chuaån Thieá t keá heä thoá ng caá p nöôùc beân trong

TCVN 5673 Tieâu Chuaån Thieá t keá heä thoá ng caá p thoaùt nöôùc beân trong

TCXD 51 Tieâu Chuaån Thieá t keá heä thoá ng thoaùt nöôùc beân ngoaøi

TCXD 33 Tieâu Chuaån Thieá t keá heä thoá ng caá p nöôùc beân ngoaøi

AS 1172 Water Closets

AS 1415 Unplasticised PVC (UPVC) pipes and fittings

AS 1631 Cast Iron pipes and fittings.

AS 3000 SAA Wiring Rules

DIN 8074 Poly Propylene Random (PP-R) Type III Pipes and Fittings

4.3

WARRANTIES

Warranties specified in this specification are additional to any warranties required bycurrent Industry Codes of Practice, relevant building regulations


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4.4

SPECIFICATION AND DRAWINGS

The drawings provided with this Specification shall be read in conjunction with this

Specification.

The Specification and drawings are mutually explanatory, and all work called for byone, even if not by the other, shall be fully executed and completed.

The drawings shall be considered approximate and diagrammatic only. Actualdimensions shall be obtained by The Sub Contractor.

It is the responsibility of The Sub Contractor to ascertain that all particular equipmentoffered fits into the provided spaces taking into consideration the requirements formaintenance and other factors affecting the installation.

4.5

DISCREPANCIES OMISSIONS

If any discrepancy, contradiction or omission appears in the specification or drawings,the Tenderer shall refer same to the Project Manager and Consultant for resolution

before Submitting a Tender. The Consultant will issue directives on such matters inwriting. Oral amendments to the specification shall not be recognised by theTenderer.

4.6

SETTING OUT OPENINGS AND MAKING GOOD

The precise location of all openings, fixings and similar items of work required forthese works to be provided by the Main Contractor shall be determined at such timesas not to cause delay to the work. All items shall be checked to ensure correctpositioning. If openings, fixings and similar items of work are wrongly located or areomitted due to incorrect or lack of information, the cost of any remedial works shall bepaid for by The Sub Contractor.

The specification drawings are diagrammatic only and unless otherwise stated shallnot be used for determining the precise positions of equipment outlets and like

features. The exact location of these shall be determined on site or from shopdrawings.

All chases, recesses and penetrations in structural elements not shown on thebuilding and structural drawings shall be Subject to approval.

4.7

POSITIONING OF OUTLETS AND EQUIPMENT

The layout of equipment shown on the drawings is diagrammatic only, and exactpositions shall be determined on site. Final position shall be to the approval of the Architect. Ensure that all plant offered in suitable for installation in the location andspaces shown on the drawings and will be accessible for maintenance in accordancewith the manufacturer’s recommendations when installed.

4.8

CO-ORDINATION OF INSTALLATION

Co-ordination shall be carried out to ensure that all items for installation in falseceilings are provided in sufficient time to comply with the Main Contractor’s program. All other services within false ceilings shall be completely installed so that it will not benecessary to remove any ceiling tiles to finish other work, apart from commissioning.


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4.9

PERFORMANCE AND GUARANTEE

The Tenderer will, by the fact of his tendering, be regarded as guaranteeing that:

(a) The equipment offered by him is of the most modern and correct design andconstruction and of the necessary capacity to efficiently perform the workspecified.

(b) The equipment offered is capable of being installed in the plant space shown onthe exhibited drawing with adequate clearance for its proper operation andmaintenance.

(c) Noise levels due to plant installed under this Contract shall be not more than NR40 in the building.

(d) The equipment offered will provide the minimum capacities as scheduledelsewhere in this Specification or on the drawings.

(e) All the settings and limits of all control instruments and equipment shall be theresponsibility of The Sub Contractor and he shall ensure that the specifiedrequirements and conditions are met.

4.10

WORKING DRAWINGS

The Sub Contractor shall prepare working drawings (shop drawings) of the proposedinstallation. All working drawings shall be submitted to the Consultant for approvalbefore commencing any work. All checking and approval of such drawings by theConsultant shall be construed as gratuitously assisting The Sub Contractor and doesnot relieve The Sub Contractor from responsibility for errors or omissions.

Where such errors or omissions are discovered later they shall be corrected by TheSub Contractor irrespective of any approval given by the Consultant. Approval ofdrawings shall not be construed as authorising additional work or increased cost tothe principal In the event that the drawings indicate additional work involvingincreased cost, The Sub Contractor shall notify the Consultant at the time ofsubmission of the drawings.

4.11

AS-INSTALLED DRAWINGS

As from the commencement of work The Sub Contractor shall employ a competentdraughtsman to keep a record of all deviations and changes from the contract andworkshop drawings and shall mark on a set of prints an accurate record of all work asactually installed.

During the progress of the work The Sub Contractor shall have recorded on AutoCADfiles, as specified, the installations as actually built, and shall submit these to theConsultant for checking. Upon approval by the Consultant of these drawings The SubContractor shall provide at his own expense sets of prints as specified elsewhere. Inaddition The Sub Contractor shall provide sets of correctly recorded diagrams,schedules of equipment, piping, fittings and all information regarding the installations

as actually built.

The Sub Contractor shall in addition retain one copy of each of the "as installed"drawings and schedules for use by him during the Defects Liability Period.


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4.12

EQUIPMENT DEVIATIONS

The dimensions and ratings of equipment specified herein or indicated on thedrawings are intended to establish the outlines and characteristics of equipment

Supplied by the particular manufacturers specified. Where The Sub Contractorintends to use an item of equipment other than that specified or shown on thedrawings or in the Schedule of Technical Data in the Contract, he must apply inwriting to the Consultant and await written approval before proceeding.

4.13

PACKAGED EQUIPMENT

Where packaged or unitary equipment is specified or offered against thisSpecification, such equipment shall be modified to conform with the requirements ofthis Specification, whether or not this requires modification of the Manufacturer'sstandard construction.

The fact that the Tenderer may have offered a particular packaged item by name shallnot absolve him from modifying it to meet the Specification.

4.14 SAMPLES AND PROTOTYPES

Samples of materials and items described as "to be approved" shall be delivered tosite at least 15 days before approval is required. Two samples shall be supplied ofeach item required, each one to be properly identified and marked with the suppliersname and model number. One of the samples shall be held on site, the second shallbe returned to the manufacturer once it has been viewed and comments have beenreceived from the Consultant. On acceptance the samples will be marked with:

● Date approved

● By whom

Submit the following sample fittings and accessories to obtain approval of theConsultant before installation:

● Pipe materials

● Plumbing fittings materials

● Asscociated electrical installation including cables, conduits etc.

● Any other items as requested by Principal

It shall be the responsibility of The Sub Contractor to arrange for the Consultant toinspect the samples to obtain approval and acceptance in writing of the offeredsamples.

The approved samples shall be retained on site for reference purposes untilcompletion of the work. All such materials used in the work covered by thisspecification shall conform with the approved samples.

The Consultant will be at liberty at any time to test or analyse samples of anymaterials brought onto the site and intended for these Works.

In addition to the above requirements for the production, Submission and approval ofsamples and prototypes, the Main Contractor may prepare an area in advance of thegeneral construction cycle. The purpose of this area shall be to ensure co-ordinationof all services and finishes and as a display area. Provide and install all samples andprototypes required for such an area as directed by the Main Contractor.


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4.15

RADIO INTERFERENCE

All equipment and/or appliances provided under this specification shall be designedso that no interference will be caused with any radio or other electronic transmitting or

receiving equipment in the same locality. In the event of the inherent characteristicsof the electrical installation being such that interference is possible, efficient devices orscreening techniques capable of eliminating such interference shall be provided atThe Sub Contractor's expense.

Define the areas susceptible to interference prior to the purchase of equipment andappliances and advise the Consultant of the methods to be adopted to reduce theinterference.

4.16

WORKMANSHIP AND MATERIALS

The Sub Contractor shall provide skilled and expert labour as necessary to carry outthe work in the best possible manner. The quality of workmanship shall be of firstgrade and in accordance with the highest standards of the respective trades.Workmanship of poor quality or of an unacceptable standard will be rejected by the

Consultant and must be replaced by The Sub Contractor at no extra cost to thePrincipal with workmanship of the required standard.

All materials, fittings, accessories and apparatus are to be of first grade design andmanufacture and are to comply with the relevant British and/or Australian standardspecification. All materials, fittings, accessories and apparatus shall be new and shallbe of current model and design unless specified otherwise. The Sub Contractor mustSubmit for the approval of the Consultant prior to commencing installation, a list of allaccessories, fittings and apparatus which it is proposed to employ in the work, andonly such items as have been approved may be installed. Failure to comply with thisprovision will result in the unconditional rejection of such items when inspected onsite.

Where directed by the Consultants "approved" samples shall be kept on site. Eachitem of equipment shall be a standard catalogue product of an established, reputable,

approved manufacturer. All similar equipment shall be of the same manufacture,type, class and finish, unless otherwise specified.

Where manufacturers catalogue numbers or types are specified or shown on theDrawings, they are generally intended to be used as a guide, and are not intended totake precedence over the basic duty and performance specified or shown. In allcases, verify the duty with the particular characteristics of the equipment offered forapproval.

Where no alternative materials are noted in the specification or on the drawings andwhere the words "equal", "approved equal", "as approved" etc do not appear, theexact make specified must be Supplied and installed. No alterations will be permittedin the lists of manufacturers and suppliers Submitted by The Sub Contractor with hisTender or Subsequently without the written approval of the Consultant.

Should The Sub Contractor install materials and/or equipment other than by the

approved manufacturer or supplier, such items may be rejected on site. All suchrejected items shall be removed from the site as soon as possible and be replaced byapproved items at no cost to the Principal.

The replacement of any such items shall not constitute grounds for any variation orany extension of time.

The Sub Contractor shall take every care to avoid damage to fittings, surfaces andequipment in the premises and any damage caused by his staff and/or the works ofhis Contract shall be his responsibility and shall be made good at his expense.


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4.17

PRECAUTIONS IN CARRYING OUT WORKS

Where any current Australian Standard published by the Standards Association of Australia is appropriate to storage, transport and use of materials, plant, equipment, to

work processes or to safety precautions the provision of such Standard shall beobserved except if they conflict with any statutory or special requirements of properauthority in which case the latter shall apply.

In the absence of any such statutory or special requirements or relevant AustralianStandard, The Sub Contractor shall ensure that suitable procedures are observed andall proper care is taken.

4.18

SCAFFOLDING AND LIFTING EQUIPMENT

Unless specifically instructed otherwise, provide all necessary temporary liftingequipment, scaffolding, framing or other supports to enable installation and access tothe work.

4.19

SEALING OF PENETRATIONS

(a) Waterproofing of Penetrations

Floor penetrations for cable risers shall be made weatherproof progressivelyduring the construction of the works to minimise weather damage or effects ofinternal flooding within the building.

(b) Holes in Roof

Continuous welded weather collars for overflashing shall be supplied andinstalled for all external ducts and pipes forming part of the work and sealed withan approved sealant.

(c) Acoustic Sealing

Wherever services penetrate walls, floors or ceilings, acoustic sealant shall besupplied and installed to maintain a degree of acoustic separation at least equal

to the materials penetrated.(d) Fire Barrier Penetrations

Where services penetrate fire walls, ceilings, floors or other fire rated barrier,sealant for those penetrations shall be sealed to the approval of the Authorities.


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4.20

FIXINGS AND PLUGS

Holes shall be drilled by electric or compressed air drill wherever possible. Explosive

charge fixing devices shall not be used.

Where devices are required for attaching materials or equipment to the building,approved metal expansion devices shall be used when and where approved by theConsultant. Wooden plugs will not be permitted. Approval of the Consultant shallalso be obtained prior to drilling to ensure that any post tensioning cables in the slabare not damaged. The Main Contractor will mark the location of all such cables.

Cadmium plated expanding metallic type masonry anchors shall be used for fixings inconcrete, clay or concrete brickwork. Except in fire isolated stairways and tunnelsconduits may be saddled to walls and ceilings using "Tappits" or similar fixing devices.

Fixed or suspended light fittings shall be supported from the concrete slab using"Dynabolts" or "Ramset" fixings.

Bolts or machine screws with nuts, washers and anti-vibration devices shall be used

where necessary for fixings into metal.

Plugs may be used for screw fixing to masonry construction including plasteredexpanded metal. Such plugs shall be used only for minor shear loadings. Holes andinserts and PVC screw anchor plugs, "Expandet" brand or equivalent shall becorrectly sized.

Cadmium plated bolts, screws and washers shall be used in all instances.

4.21

STORAGE AND PROTECTION

The Sub Contractor shall be responsible for proper storage and protection ofapparatus, materials and equipment on any site adjacent to, associated with or theSubject of the works.

Upon delivery to site all materials and equipment shall immediately be secured

properly stacked and protected from the weather dampness and dust with particularattention to preventing ingress to working parts and pipes. The Sub Contractor shallbe responsible for storing all equipment which cannot be accommodated on site.

The Sub Contractor shall confer with the Main Contractor and accept his instructionswith regard to storage of materials, particularly heavy loads. All equipment andmaterials shall be stored clear of floor slabs on timber packers.

Special care shall be exercised to prevent the ingress of dirt, moisture and foreignSubstances into conduit pipes, duct and equipment. Should such ingress occurcarefully remove the offending matter and thoroughly clean the conduit pipes, ductsand equipment to approval.

When any room in the building is used as a shop or storeroom in connection withthese works all resulting making good and repairs, patching or cleaning of the roomarising from such use shall be carried out prior to completion of the works.

Mixing of any materials on the floors other than where such material is finally to belocated shall not be permitted.

Fittings or other equipment shall not be used as a place for depositing tools andmaterials, as a means of supporting scaffolding or for use as a work bench.


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4.22

SITE CLEANLINESS AND REMOVAL OF RUBBISH

The Sub Contractor shall remove from site all rubbish, debris, material cuttings andother redundant materials which result from the works of this Trade-contract,

progressively and whenever directed by the Main Contractor

On completion of the work, promptly remove all materials and equipment from site,except such materials and equipment which the Principal has agreed to store for useduring the Maintenance Period or as are required for testing.

4.23

DIMENSIONS

Dimensions must be checked before work is put in hand or prefabricated. All invertlevels on the drawings are recommended only and must be checked on site beforeexcavation or installation of pipework to ensure connection to supply services andcorrect cover and fall.

4.24

ACCESS TO SERVICES

Pipe services shall be installed clear of each other and easily replaceable

Inspection openings, valves, tanks, cisterns and other controls which may requireaccess from time to time shall be arranged so that these are readily accessiblethrough inspection openings provided in walls, ceiling and ducts.

Pipe services shall not be buried in floors or walls unless specifically shown on thedrawings or as instructed by the Consultant.

Pipe services unless shown otherwise, shall be installed to run parallel to adjacentwalls and/or other services or at 90o to same.

4.25

PIPE SLEEVES

All pipes passing through fire rated walls or floors shall be sleeved and shall be placedprior to construction. Sleeves shall be removed prior to installation of pipes, then afterpipe installation, the space between the penetration and pipe shall be firmly packed

with approved fire stop sealant as scheduled within this specification underpenetrations.

Sleeves shall comprise 0.7mm metal, copper for copper pipes and galvanised steelfor all others. Sleeves shall be 25mm greater in diameter than the pipe served.

4.26

EXPANSION

Provision shall be made throughout for expansion and contraction wherevernecessary and this shall include the supply and installation of all necessary approvedexpansion devices.

Provide expansion joints at fixed points to vertical stacks and horizontal branches inaccordance with the Standard Code of Practice. Where piping is Subject to largevariations in temperature and is installed in such a way as to prevent movement, a

seal ring joint shall be used between fixed points.Expansion joints shall be used on long straight runs and shall be in accordance withthe Standard Code of Practice.

Where a seal ring adaptor is fitted to the socket of a fitting, care must be taken toleave the required gap between the end of pipe and the shoulder of the socket in thefitting.


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4.27

CAPPING OFF

During the construction, leave all unfinished work in a safe condition, protect theworks against damage or loss through any cause whatever, and seal off open ends of

pipe in such a manner as to prevent the entry of foreign matter, including liquids intothe lines until the works have been handed over on completion.

4.28

FIXING AND SUPPORT OF SERVICES

Except those services laid in excavation and back filled, all plumbing service pipeworkshall be securely fixed with all necessary support, hangers, brackets, fixing andaccessories necessary to provide effective support, with only moderate deflection orsagging, in accordance with good trade practice.

All such supports or provision for same shall meet the requirements of the relevant Authorities having jurisdiction over the work, and the approval of the Consultant asspecified.

Pipework must not come into contact with any other service pipes or part of thebuilding structure unless insulated with PVC sheathing or approved PVC adhesivetape. Pipes concreted into floors or walls, shall be sheathed with 450 sisalation.

All pipework shall be free to move without causing undue stresses in the pipework orin the pipe joints and without transmitting lateral stresses via fixings to walls, slabsand ceilings.

Supports shall be galvanised mild steel '"Unistrut" P1000 channel or equal approvedcomplete with purpose made galvanised spring nuts, framings, fittings and pipeclamps for each pipe.

Pipe supports shall be installed at every change in direction.

Under no circumstances will explosive power tools be used for fixings.

All copper pipes shall be separated from supports by 4mm thick PVC strip or similarapproved material.

Remove all cement dropping, dirt and superfluous material from all pipe supports.Pipes shall be fixed at the following maximum intervals, unless specified otherwise:

Horizontal Spacing of Pipe Supports:

Pipe size: ∅15 ∅20 ∅25 ∅32 ∅40 ∅50 ∅65 ∅80

Copper: 1800 2400 2400 2400 2400 3000 3600 4200

PVC: As required under the Australian Standard

Vertical Spacing of Pipe Supports:

Pipe size: All pipe size

Steel: 3000

Copper: 2700

PVC: As required under the Australian Standard

HDPE: As required by the manufacturer

The spacing of supports for annealed copper tubing shall be half the spacingscheduled for solid drawn copper tubes.


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4.29

IDENTIFICATION OF PLUMBING SERVICES

The whole of the exposed installed services, except those chromium plated will bepainted by the Main Contractor. The Sub Contractor after painting shall provide

colour identification bands 150mm wide at maximum of 3m centres in accordance with AS1345.

Where services are concealed, they shall not be painted but must be identified inaccordance with the code.

Pipe identification markers shall be applied in accordance with AS1345 or equal, notwo markers on a single pipe shall be place further than 4000mm apart.

Lettering symbol on markers shall be 25mm high on pipes up to 32mm diameter and40mm high for pipes 40mm diameter or greater. The symbols shall be as stated in thefollowing schedule. The markers shall be applied to all piping in all positions of thebuilding.

All valves shall be labelled with a circular brass disc, stamped with lettering punchesfor their respective function and mounted on top of valve spindles with screws and

nuts.

4.30

PIPE IDENTIFICATION COLOURS

Types of Pipes Colour Symbol on Marker

Soil or Waste Pipes Black Soil or Waste

Vents Black Vent

Cold Water Emerald Green Cold Water

Domestic Hot Water Emerald Green Hot Water

4.31

CHROMIUM PLATING

All pipework and fittings exposed to public view in the areas listed below andotherwise directed, shall be chromium plated. Chromium plating on copper or brassshall be by first heavily nickel plating deposition followed by chromium plating.

Where steel or iron parts are plated, these shall be first copper plated followed bynickel plating and then chromium plating. Wall or floor plates shall be chromiumplated as for pipework above.

Note that some chromium plated parts are bright finish, but the majority will be satinfinish in accordance with the relevant standard, and to approval.

4.32

POLISHED SURFACES PROTECTION

All chromium plated, polished stainless steel, vitreous enamel and porcelain surfacesshall be protected during building construction and installation by the application ofpeel off protective coating or equal approved.

The protective coating shall be sprayed on to each appropriate piece of equipment assoon after delivery as possible and in strict accordance with the manufacturer'sinstructions.

When the work of this contract is completed and as directed by the Consultant theprotective coating shall be removed. After removal, the surfaces previously protectedshall be cleaned off with methylated spirits and then polished with a soft cloth.

Scratched or damaged finished surfaces will not be accepted.


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4.33

GRADIENTS

Gradients shall not be less than 1:500 for water services and as specified by the Local Authority for sewer drains and vents.

4.34

EXISTING PIPES, SEWERS AND OTHER SERVICES

Where the contract requires a connection or an alteration to be made to an existingmanhole through which sewerage is flowing, The Sub Contractor shall take steps, tothe approval of the Consultant to ensure that no construction or other extraneousmaterials may be permitted to enter the live sewer. The Consultant shall have theauthority to direct The Sub Contractor upon the "modus operandi" to be adopted forsuch work.

4.35

EXISTING SERVICES

The Sub Contractor shall contact all local authorities prior to commencing work, toascertain the precise location of all services in the vicinity of the proposed works andprotect the existing services as necessary during the progress of the work.

Any damage to existing services caused by The Sub Contractor shall be made goodat his own expense. Where services conflict with the proposed design, The SubContractor shall advise the Consultant and shall allow in the contract sum forcompleting any additional works which may be required.

If any existing services are found to be damaged or require repair, The Sub Contractorshall contact the local authority to arrange remedial works.

4.36

ACOUSTIC TREATMENT FOR PIPEWORK

Noise generated by pipes/fittings in occupied spaces shall not cause the backgroundnoise level to increase by more than 1 dB(A) for typical use.


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5.

MATERIALS

5.1

GENERAL

The Sub Contractor shall supply all materials necessary for the work as specifiedherein.

All pipes, fittings and other materials shall be of the best quality and description oftheir respective kinds and shall be to the approval of the Local Authority and any other Authority having jurisdiction. The materials shall also conform to the relevant Australian Standards or relevant British Standards where no Australian Standardexists.

When directed, samples of each kind of material to be used shall be submitted for theapproval of and retention by the Consultant and after approval, the materials deliveredto site shall be in strict accordance with the samples submitted.

The Sub Contractor shall provide plant and labour as necessary for off loading andstorage of materials. Any materials which have been found to be defective shall beremoved from the site.

The Consultant shall be informed of the storage of whence the various materials aresupplied or of the places of their manufacture and be afforded every facility to inspecttheir manufacture or supply at any stage.

Appropriate and approved gauges and/or scales for weighing and/or measuring allmaterials shall be made available.

5.2

PIPES AND FITTINGS

(a) Cold Water Pipes and Fittings

Item Pipe size (mm) Materials

Above groundCold Water ø150mm and below PP-R (III) PN10

Incoming Supplyto water tank

AllGalvanized Iron Heavy Grade (C)or HDPE

Below groundCold Water

ø50mm and below Galvanized Iron Heavy Grade (C)

Ø65mm and above Steel pipe cement lined internally

(b) Soil, Vent / Anti-Syphonage Pipes and Fittings

Item Pipe size (mm) Materials

Soil All UPVC or Cast Iron

Vent &CondensateDrain

All UPVC or Cast Iron

Below ground All within building Galvanized Iron Heavy Grade (C)

All across road, MH VCP


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5.3

JOINTING MATERIALS

(a) PPR Pipe Joints

Joints between PP-R pipes and fittings and other approved fittings shall be madewith any of the following methods using installation machinery approved by themanufacturer of the pipes and fittings:

● Socket Fusion Welding

● Butt Welding for diameter 110 mm and above

● Metal Threading and Socket Fusion Welding

● Electric Coupling Welding

● Backing ring welding and flange assembly

Pipes and fittings must be installed in accordance with the manufacturer’srecommendation.

The joints with other types of pipe and fitting materials (other than PP-R Type 3)

and valves shall be either with Kelen threaded female or male fittings dezincifiedresistant brass to BS 2872 which is moulded internally as integral into the PP-Rfittings, or flange asemblies

(b) Rubber Ring Gaskets

Sewer drainage - shall be in accordance with AS1693 installed in accordancewith AS CA56. All rubber rings shall be of the type recommended by the pipemanufacturer.

Soil and waste stacks - shall be neoprene rubber in accordance with AS1646, theLocal Authority and be of a type recommended by the manufacturer.

(c) Lubricant

For lubricating the rubber ring gaskets and the outside surface of the spigot endof the pipe shall be of an approved non-toxic vegetable base type and shall be

applied in accordance with the manufacturer's instructions.

(d) Bolts and Nuts

Generally shall conform to AS B100 and heavily galvanised by the hot dipprocess. Where flanged joints are made between copper pipes and cast ironpipes or fittings, use gun metal bolts complying dimensionally with AS B117. Thegun metal shall have an ultimate tensile strength of at least 600 MPa.

(e) Rubber Insertion

For flanged joints shall be of approved quality and sufficiently durable to last thelife of the pipe without leaking.

(f) Silver Brazing Alloy

Alloys for capillary jointing of copper and copper alloy pipes and fittings shall

comply with Table 1 or Table 2 of AS 1167.1 and contain a minimum of 1.8%silver and a maximum of 0.05% cadmium.

(g) U.PVC

Shall be by means of an approved solvent cement. Pipes and fittings shall bethoroughly cleaned with an approved priming fluid, coloured red for proof osusage.


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5.4

VALVES

(a) Gate Valves

All valves shall be tested to a pressure of 2100 KPa for fire services and pumpsystems and 2000 KPa for valves throughout the system and stamped by anapproved testing authority. All valves shall be of specified manufacture.

All valves in pump rooms, and in other places where 65mm and over shall beflanged. All other valves shall be screwed.

Valves up to 65mm shall be all bronze. Valves 75mm and over may be cast ironwith bronze trim.

The spindles shall be non-rising type and must not project into the bore of thevalve when the valve is in the full open position. The bore must be clear andunobstructed in this position.

The internal seats and washers of valves must be cleaned of all foreign materialduring installation. Any valve faces or seats found damaged on completion of theinstallation shall be replaced.

(b) Reflux Valves for Water Supply

All valves shall be tested to a pressure of 2400 KPa and marked by an approvedtesting authority.

(c) Control Valves

All Control Valves shall be bronze with screwed ends and loose jumper valves.Seal on valve stem shall be of the stuffing box type. The internal seats andwashers of valves must be kept clean of all foreign material during installation.Damaged seats or washers must be replaced on the direction of the Consultant.

(d) Labelling of Valves

Valves shall be labelled with a circular brass plate stamped with respectivefunction and mounted on top of valve spindles with screws or bolts and nuts.

(e) Tap Washers & Valve Seats

All washers to taps and control valves shall be best quality fibre and becompatible with the valve seating. Valve seats shall be brass machined withoutsharp edges which may damage the tap washers. Washers shall be replacedwith a new washer immediately prior to handing over on completion of Contract.

(f) Back Flow Prevention Valves

● Reduced Pressure Zone Device

Valve to AS2845, complete with isolation valves, line strainer and testpoints.

● Hose Connection Vacuum Breaker (All Hose Taps)

Valve to AS2845, installation to manufacturer's recommendations.

(g) Pressure Limiting Valves

∅20mm RMC PSL75 Pressure Guard 500kPa or equal approved

∅25mm RMC PS1002 kPa or equal approved

∅32mm to

∅100mm

RMC ACV115 adjustable pressure reducing valve or equalapproved.


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5.5

MISCELLANEOUS ITEMS

(a) Pipe Flanges

Pipe flanges shall be BST table “E” slip on flanges and welded in accordancewith current codes and Australian Standard using bolts and nuts with suitablegaskets.

(b) Traps

Traps ∅65 and under shall be constructed of brass, loose ring jointed and CPwhere exposed in finished areas, of sizes to suit fixtures.

Traps to urinals, showers and floor wastes shall be brass or cast iron (withmechanical joints). Gratings shall be chrome plated brass, flat or domed to suit. Allow for vinyl clamp floor wastes within the commercial kitchens anddishwashing area.

Where noted traps to be fitted with a tundish shall be to the size tundish and trapnominated on drawings, manufactured from brass or copper.

(c) Expansion Joints

Expansion joints shall be provided on waste and vent pipe system as required bythe relevant Authority.

(d) Cowls

Approved type cowls shall be fitted to vent pipes with approved under and overflashing where penetrating roof, ensuring the flashing is waterproof.

(e) Pan Connections

Pan connections shall be made using an approved brass pan connector fixed tothe soil pipe with a suitable connection for the W.C.

5.6

FINISHES

(a) Galvanising

All galvanising steelwork shall be galvanised to approval using the hot dipprocess to give a coating minimum thickness of 0.10mm. Galvanising shall bedone after all fabrication and drilling of the metal work has been completed.

(b) Plating

Where chrome plating is specified it shall mean:

5.7

ACOUSTIC TREATMENT TO ABOVE GROUND WASTE AND STORM

WATER PIPEWORK

Allow to wrap all above ground waste water pipework suspended in the ceiling spaceof the building with 25mm Armaflex insulation, fixed in position with electrical cableties at 1M centres.


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5.8

VIBRATION ISOLATION

(a) Genaral

Provide control of excessive noise and vibration in the buildings due to theoperation of machinery or equipment, and/or due to interconnected piping,ductwork or conduit. Installation of vibration isolation units, and associatedhangers and bases, under the direct supervision of the vibration isolationmanufacturer’s representative.

All vibration isolators shall have either known undeflected heights or calibrationmarkings so that, after adjustment, when carrying determining that the load iswithin the proper range of the device and that the correct degree of vibrationisolation is being provided according to the design.

● All isolators shall operate in the liner portion of their load versus deflectioncurve. Furnish load versus deflection curves linear over a deflection rangeof not less than 50% above the design deflection.

● The ration of lateral to vertical stiffness to be not less than 0.9 nor greaterthan 1.5.

● The theoretical vertical natural frequency for each support point, basedupon load per isolator and isolator stiffness shall not differ for the designobjectives for the equipment as a whole by more than + 10%.

● All neoprene mountings shall have a Shore hardness of 40 to 65, afterminimum aging of 20 days or corresponding oven-aging.

Manufacturer of vibration isolation equipment has the following responsibilities.

● Determine vibration isolation and seismic retrain sizes and locations.

● Guarantee specified isolation system deflection.

(b) Material

All vibration isolation devices to be the product of a single manufacturer.

Where exposed to the atmosphere or located in non-air conditioned spaces allsteel to be hot dipped galvanized; hardware to be cadmium plated; springs to beneoprene coated.

(c) Vibration Isolators

Types of vibration isolators to be used shall be characterized below:

(i) Type A: Spring isolators to incorporate the following:

• Minimum diameter of 0.8 of the loaded operating height and horizontalspring stiffness 1.1 times rated vertical spring stiffness.

• Reserve deflection, from loaded to solid height, of 50% of rated

deflection with leveling device.

• Minimum 7.5mm thick neoprene acoustical base pad on underside,unless designated otherwise.

• Ensure that ends of springs remain parallel.

• Non-resonant with equipment forcing frequencies or support structurenatural frequencies.


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(ii) Type B: Spring isolators to be same as Type A, except:

• Provide build-in resilient vertical limit stops.

• Tapped holes in top plate for bolting to equipment.• Capable of supporting equipment at a fixed element during equipment

erection.

(iii) Type C: Spring hanger rod isolators to incorporate the following:

• Spring and neoprene isolator elements in a steel box retainer.

• Characteristics of spring and neoprene as described in Type D andType H isolators.

(iv) Type D: Elastomer isolators to incorporate the following:

• Bolt holes for bolting to equipment base.

• Bottom steel plates for bolting to sub-base as required.• Unit type design molded in oil-resistant neoprene.

• Neoprene to be compounded to meet the following:

o Not greater than 70 durometer.

o Minimum tensile strength 13, 780 kPa.

o Minimum elongation 300%.

o Maximum compression set at 25% of the original deflection.

(v) Type E: Elastomer hanger rod isolators to incorporate the following:

• Molded unit type neoprene element.

• Compounding described in Type D above.

• Steel retainer box encasing neoprene mounting.

• Clearance between mounting hanger rod and steel retainer box.

(vi) Type F: Pad type elastomer mountings to incorporate the following:

• 8mm minimum thickness.

• 345 kPa maximum loading.

• Ribbed or waffled design.

• 1.875mm deflection per pad thickness.

• 1.875mm galvanized steel plate between multiple layers of pad

thickness.

• Suitable bearing plate to distribute load.


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(vii) Type G: Pad type elastomer mountings to incorporate the following:

• Laminated canvas duck material and neoprene.

• Maximum loading 6,890 kPa.

• Suitable bearing plate to distribute load.

• Minimum thickness, 50mm.

(viii) Type H: Combination spring/elastomer hanger rod isolators to incorporatethe following:

• Spring element seated on a steel washer within a neoprene washer

• Steel retainer box encasing the spring and neoprene washer

• Minimum 15mm clearance between retainer box and spring hanger rod

• Maximum 30 degree allowable rod misalignment from center line axis.

Where operating weight differs from installed weight provide built-in adjustablelimit stops to prevent equipment rising when weight is removed. Stops shall notbe in contact during normal operation.

(d) Equipment Bases

(i) Integral Structural Steel Base, Type B-1

Reinforced as required to prevent base flexure at start-up andmisalignment of drive and driven units. Centrifugal fan bases completewith motor slide rails. Drilled for drive and driven unit mounting template.

(ii) Concrete Inertia Base, Type B-2

Concrete inertia bases to be formed in a structural steel perimeter base,reinforced as required to prevent flexure, misalignment of drive and drivenunit or stress transferal into equipment. The base to be completed withheight saving brackets, reinforcing, equipment bolting provisions andisolators. Concrete form, pads and bases to be provided by anotherdivision of this specification. This division to provide all dimensionalinformation.

Minimum thickness of the inertia base to be according to the followingtabulation:

Motor Size (kW) Min. thickness (mm)

• 3.7 ~ 11 150 mm

• 15 ~ 37 200 mm

• 45 ~ 55 250 mm

• 75 ~ 185 300 mm


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(e) Flexible Connections

(i) Neoprene Type FC-1

• Manufactured of nylon tire cord and neoprene both molded and curedwith hydraulic presses.

• Straight connectors to have two spheres.

• Elbow to have single sphere forming the corner of joint.

• Rated 1034 kPa at 93.3oC.

• Size 300mm and larger to employ control cables with end fittingsisolated from anchor plates by means of 15mm bridge bearing.

• Neoprene washer bushings.

(ii) Flexible Stainless Hose, Type FC-2

• Braided flexible metal hose.

• 50mm pipe size and smaller with male nipple fittings.

• 65mm and larger pipe size with fixed steel flanges.

• Suitable for operating pressure with 4:1 minimum safety factor.


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6.2DOMESTIC WATER TANK FILL PUMPS

Supply and install a prefabricated, factory assembled on a steel base a packaged

domestic water tank fill pump system with base mounted control panel complete withvalves on the suction and discharge side of the system.

(a) Packaging:

All components shall be mounted on a structural steel base suitable for grouting.The Sub Contractor shall completely fill the base with grout prior to pump start-up. The area beneath pump casing drains of multi-stage pumps shall be leftclear.

Piping shall consist of flanged cast iron fittings and steel spool pieces having anepoxy phenolic lining conforming to local regulations for potable water. Thelining, shall be applied in two (2) coats, after sand blasting, to a thickness of 8 to10 mils. The piping shall be adequately supported independent of pumpconnections. It shall be arranged with adequate space for maintenance and toallow for removal of any pump without system shutdown. The piping shall be

sized for a maximum velocity of 2 metres per second.

Isolation valves shall be installed on the suction and discharge of each pump.Each pump shall be provided with an adjustable thermal safety purge valvewhich shall open and discharge water to drain when the temperature exceeds 40degrees C.

Controller mounted, 115mm diameter, pressure gauges shall be provided forindication of suction, system, and individual pump discharge pressures. Allpressure sensing lines for gauges or pressure switches shall be factory pipedwith shut-off valves.

The pumps and all components on the discharge side of the pumps shall have arated working pressure greater than pump shut-off head plus maximum suctionpressure. The Sub Contractor shall pipe all purge valve lines and packing glanddrains to a floor drain.

All control wiring shall be supplied by and installed by this contract

(b) Pumps

Pumps shall be of the bronze fitted single stage, horizontal split case design

Pump casing material shall be cast iron hydrostatically tested at 150% of themaximum working pressure under which the pump could operate at designspeed. The bearing bracket supports shall be cast integral with the lower casinghalf for permanent alignment of bearings and all rotating parts. The suction anddischarge flange shall be drilled as required of piping system maximum operatingpressure.

Bronze, renewable casing rings shall be supplied, dowelled and shouldered inthe casing.

The impeller shall be of the one piece cast bronze, double suction type. Theimpeller shall be hydraulically and dynamically balanced, keyed to the shaft witha stainless steel impeller key and fixed in an axial position by threaded shaftsleeves. The impeller skirt shall be grooved.

Stuffing boxes shall hold a minimum of five rings of non-asbestos packing. Thepacking glands shall be split into two halves to facilitate removal for repacking.The gland bolts, shall be of the swing type and made of steel with stainless steelnuts.


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The shaft shall be carbon steel. The shaft shall be protected through the stuffingboxes by bronze shaft sleeves and they shall be threaded against shaft rotation.The sleeves shall be sealed with 'O' rings at the inside diameter to eliminateleakage between the shaft and sleeve.

The bearings shall be single row, deep groove ball type, grease lubricated.Bearings shall be designed for an average life of 10,000 hours. Bearing housinglubrication design must be capable of being changed from grease to oillubrication without replacement of the bearing housing or the lower pump casing.

A flexible coupling shall be provided between the pump and driver. A couplingguard shall be Supplied over the coupling for protection.

(c) Pump Control Valves

The valve shall be a diaphragm actuated, single seated, hydraulically operatedglobe-type valve. It shall have two operating chambers sealed from each other bya flexible synthetic rubber fully supported diaphragm. The valve disc shall beresilient with a rectangular cross section and shall be retained on three and one-half sides.

Control of the valve operation shall be by means of externally mounted, three-way, solenoid pilot valves. Self-cleaning strainers shall be used to protect thecontrol system. Valve shall utilize line pressure for operation. A limit-switch mustbe installed in the cover of the main valve to be adjustable over the entire valvetravel. Valve shall be equipped with a built-in lift type check feature to preventreverse flow. It shall operate independently of the solenoid controls and it shallbe guided by a bearing in the main valve cover, the main valve center sectionand the main valve integral seat bearing.

The valve trim shall be stainless steel. The main valve body, center section, andcover shall be all bronze. The ends shall be as required for the pumping system,and shall have a working pressure of the calculated design requirement. Theelectrical rating of the solenoids shall be 240/50 cycle. The solenoids shall havetwin operators.

(d) Control Panel

The compartment control panel shall be complete with the following equipment:

● IP44 enclosure.

● Power wiring factory installed from panel to motors.

● Magnetic starters: Wye-Delta type, with overload and low voltage protection.

● Disconnect Switches: Fusible type.

● M.O.A. switches.

● Control Transformer: 415/240 with fused primary and secondary.

● Automatic alternator solid state with third pump lock-out.

● Elapsed time meters.

● Pump protectors.

● One pump on standby.

● The building management personnel shall also have the option toreprogram the logic center at any time after the installation.

● Provide terminal strip in accordance with project standard.


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(e) Level Control System

Provide for each tank compartment six shielded, stainless steel electrode probesfor: high water level, pumps off, lead pump on, tag pump on, low water level and

ground. Electrodes shall be suspended from a cast iron probe holder into a75mm diameter flanged stifling well. The stifling well shall be field fabricated, withan air vent at the top, to suit the existing conditions by the Sub Contractor.

Provide an electrode relay panel with tank compartment selector switch, mountedas close as possible to the tank, IP44 enclosure. The electrode relay panel shallbe powered from the pump control panel and be equipped with a circuit breakerdisconnect switch and power failure relay. The power failure relay shall preventthe pumps from operating should the relay panel lose power.

Provide terminal strip in accordance with project standard.

(f) System Indications and Alarms

The following indications shall be provided at the pump control panel:

● Pump running lights

● Pump failure lights

● Electrode signal failure lights

● High water level alarm light

● Low water level alarm light

● Power available light

(g) At any given time, the building management personnel shall have the ability tovisually check the following:

● System water usage - daily

● System flow in L/S

● Pump running condition.

(h) The following flow metering provisions shall be provided at the control panel: ● Flow rate transducer 150mm insertion type, located at pump suction line.

● Insertion Element - stainless steel with 38mm bronze corporation cock

● LED instantaneous flow display with adjustable times update.

● Seven (7) day chart recorder located in pump system control panel.

● Resettable flow totalizer

(i) Operating Sequence and Alarms

The electrical control system shall start and stop pumps on a lead/lag basis asrequired by the tank level controls. Upon failure of one pump or its scheduledshutdown for service, the standby pump shall operate normally. Pump controlvalves, installed on each pump discharge, shall eliminate pipeline surges by thisoperation: pump starts against a closed valve; the solenoid is energized

gradually opening the valve; when the pump is signaled to stop, the solenoid isde-energized, slowly closing the valve while the pump continues to run; when thevalve is fully closed, the valve limit switch allows the pump to stop. The primarycomponents of the level control system are the programmable receiver controllerand electrode sensor. The pumps shall be automatically alternated on every dutycycle.


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In the event of a pump failure to start, the pump shall 6e locked out, failure alarmshall be activated and the next pump shall take its place. Failure shall bedetermined by individual pump discharge pressure switches and timers. Manualreset required.

In the event of a pump failure to stop automatically from the high water levelsignal, the operating pump shall be stopped, locked out of automatic operation,failure alarm shall be activated and the next pump shall take its place. Failure tostop shall be determined by individual pump discharge pressure switches (setfor pump shutoff head plus minimum suction pressure), timers, andinterlocking with the float valve at each house tank such that when the valvecloses the pump will shut down as well as sounding a high water alarm. Manualreset required.

In the event of a low suction level condition, the pumps shall be cut-off and alarmshall be activated. Pumps and alarm shall automatically reset when conditionsreturn to normal. To be field interwired, by this Contract of the Specification to thesuction tank controls.

In the event of a high system pressure condition, the pumps shall be cut-off andalarm shall be activated. Pumps and alarm shall automatically reset whenconditions return to normal.

In the event of a failure of a programmable controller ("PC") or electronicpressure sensor, a failure circuit shall activate redundant electromechanicalcontrols and alarm and the system shall continue to operate automatically.Electronic pressure sensors shall have individual signal loss alarms.

All alarms shall be audio-visual. Provide a pair of NO/NC auxiliary alarm contactsfor remote trouble alarm.

All start/stop and alarm set points shall be field adjustable, Activation of all alarmfunctions shall follow field adjustable time delays.

Interlock the high water level alarm with the solenoid shut-off valve at the tanks.

High water alarm condition shall cause the solenoid shut-off valve to close.(j) Warranty and Spare Parts

The pump, motor and control manufacturer shall test the equipment prior tosystem fabrication and instruct the building management personnel for aminimum 2-day period on the operation of the system.

The entire packaged assembly shall be guaranteed for a period of two (2) years.The system logic controller shall be guaranteed for a period of five (5) years.

System spare parts shall include the following:

● Spare logic system controller.

● Spare set of timers.

● Spare set of pump packing.

● Tank level electrode. (k) Emergency Power

Provide necessary contacts and controls to allow only one pump to run whileoperating on emergency power.


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6.3 SUMP PUMPS

Supply and install, where shown on the drawings, submersible sump pumps.Capacity of pumps shall be as shown in the drawings. Motors shall be housed in awater-tight cast iron shell with extended cooling fins shall have Class ‘F’ insulation andpermanently lubricated double seal bearing having a rated life of 17,500 hours.Motors having sleeve type bearings will not be considered equal. Motor shaft shall be300 series stainless steel. Carbon steel shafts are not considered equal.

The impeller shall be multi-vane semi-open type and shall be of phenobic constructionand accurately machined to the proper diameter. Impeller shall be statically anddynamically balanced.

Pump control shall be by a factory mounted micro-switch.

6.4 TESTING AND BALANCING

Upon completion of installation the Sub Contractor shall notify the Consultant andproceed to undertake the balancing, testing, calibration and setting of all equipmentand controls. Prior notification shall be not less than 48 hours in advance of anytesting to be done.

All components shall be systematically tested for correct operation to ensure anapproved installation as follows:

(a) All pumps shall be checked for flow rates, pressure head and r.p.m.

(b) All pipework shall be hydrostatically tested to 1030 kPa (150 psi) or 1 ½ times theworking pressure whichever is greater. This shall be maintained for a period notless than 24 hours.

(c) All pressure and flow switches shall be set and tested to the satisfaction of theConsultant.

(d) All control board circuitry, indicators and alarms shall be checked for correctsetting and operation.


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7.

WATER HEATER

7.1 GENERAL

Furnish and install complete factory assembly packaged system, including auxiliarycomponents and controls.

Packaged heater shall include the following components:

● Provide thermostats in operating temperature range.

● Bronze pressure and temperature relief valve (ASME Certified) to complywith relevant Australian or British Standards and local codes.

● Heater shall be as scheduled on the drawings.

7.2 ELECTRIC DOMESTIC WATER HEATERS

The heater shall be glass-lined dura-power supreme commercial electric model as

shown on the drawings. Heater shall be constructed in accordance with ASME codeor relevant Australian or British Standards and shall bear appropriate symbol andlisted as required. Heater shall be listed with Underwriters Laboratories.

All internal surfaces of the tank shall be glass-lined with an alkaline borosilicatecomposition that has been fused-to-steel by firing. Tank shall be cathodicallyprotected with adequate extruded magnesium anode. The entire vessel is to beenclosed in a round steel enclosure with baked enamel finish. Control compartment tobe hinged and shall house 240 Volt for single phase or 380 Volt for 3 phase asrequired, control circuit transformer, transformer fusing, magnetic contactors,immerson style operating thermostats, element fusing and commercial grade incoloysheathed flange mounted elements with prewired terminal leads.

Temperature controls include limiting switch that will require resetting manually in theevent the temperature reaches 88oC and low level shut-off. Foam insulation shall

exceed latest requirements of ASHRAE for heat loss efficiency. Heater shall include ASME T & P relief valve and drain valve.

7.3 TESTING

When the service is completed, it should be slowly and carefully charged with water,allowing all air to escape and avoiding all shock or water hammer. The service shouldthen be inspected under working conditions of pressure and flow.

When all draw-off taps are closed, the service should be absolutely watertight.

Each tap should be opened and checked for satisfactory rate of flow.

All piping, fittings and appliances should be checked over for satisfactory support, andprotection from damage and corrosion.

Because of the possibility of damage in transit, cisterns, tanks and cylinders should beinspected and re-tested for water tightness at the site.

All PP-R Type III Pipes and fittings for hot water supply pipework shall be hydrosticallytested at not less than 15 bar using cold water as the medium.

The hydrostatic test pressure shall be measured at the lowest point of the installationor section being tested and shall be held for a period of not less than 24 hours. Thereshall not be any leakage or the test pressure shall not be observed to reduce lessthan 0.1 bar at every one-hour interval except due to temperature variation.


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8.

SEWER DRAINAGE

8.1

GENERAL

Sewer drainage work shall be carried out as indicated on the Drawings.

Provide all pipework, pits and other related works, set out the system to providemaximum falls and lay each pipe to uniform grade with sockets facing upgrade,spigots fully inserted and with full allowance for bedding.

8.2

MATERIALS

Sewer drains shall be constructed of cast iron pipe and fittings to AS1631

8.3

WORK BEYOND PROPERTY BOUNDARY

Where a service is to be installed outside the property boundary, all work shall becarried out with the permission and to the requirements of the Authority controlling thethoroughfares or easements, and all Authorities having jurisdiction over the work.

8.4

EXCAVATION

Excavate trenches to the depths which will provide for the appropriate type of beddingand uniform grades. Excavation shall commence at the outfall end of all drains andservices.

In trenches which may be adversely affected by rain remove the final 80mm ofexcavation as a separate operation immediately before placing the bedding material.Keep all trenches free from water, and construct any temporary sumps or drains asdirected by the Consultant.

Start laying main drains at points of outfall and insert junctions for branch drains aswork proceeds.

Cut a shallow chase under each collar where applicable so that the barrel of the pipe

rests solidly full length on its bed.Temporarily seal all open ends of drains at the end of each day with accurately fittingplugs to prevent ingress of foreign matter.

8.5

PIPE LAYING

Lay sewerage drains with uniform grades to levels indicated, commencing from theoutfall end and working upstream.

Provide inspection openings as appropriate, where shown, at all changes of directionsand not more than 9m apart and where required by the Regulations of the relevantlocal Authority having jurisdiction.

Connect sewerage drains and branches to all soil stacks, fixtures at ground floor leveland grease interceptor trap. Provide in positions indicated gully trap with risers and

inlets as required, C.I. gratings and concrete surrounds and with overflow relief gratingas required.

Ensure that pipes are not dislodged or pushed out of alignment during construction.


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8.6

BEDDING

Bedding materials shall be clean, hard, sound rock complying with the relevant local

Authority's requirements.

Vitrified clay pipes and cast iron pipes shall be laid on a minimum thickness of 75mmbedd

06051 manor 2 plumbing spec rev02 16032007

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