Hydraulic Services Quality Specification

Hydraulic Services Quality Specification SOFITEL REFURBISHMENT

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TABLE OF CONTENTS

TABLE OF CONTENTS ..................................................................................................................................... 1

0811 Sanitary fixtures ................................................................................................................................... 2

0812 Tapware ............................................................................................................................................. 12

0814 Hydraulic pumps ................................................................................................................................ 20

0821 Stormwater – buildings ...................................................................................................................... 27

0822 Wastewater ........................................................................................................................................ 35

0823 Cold and heated water ....................................................................................................................... 42

0824 Fuel gas .............................................................................................................................................. 51

0825 Rainwater storage systems ................................................................................................................ 58


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HYDRAULIC TABLE OF CONTENTS

0811 SANITARY FIXTURES

1 GENERAL

1.1 RESPONSIBILITIES

General

General: Provide sanitary fixtures.

Selections: As documented.

1.2 CROSS REFERENCES

General

Requirement: Conform to the following:

- General requirements.

- [complete/delete]

1.3 INTERPRETATION

Abbreviations

General: For the purposes of this worksection the following abbreviations apply:

- WC: Water closet.

1.4 STANDARDS

Authorised products

Standard: Listed in the WaterMark Product Database, unless otherwise required by the Network Utility

Operator.

Standards

Sanitary fixtures: To ATS 5200.

Design for access and mobility: AS 1428.1, AS 1428.2 and AS 1428.3.

Labelling

Water efficiency labelling: Provide only products conforming to and labelled to the Water Efficiency

Labelling Scheme (WELS).

1.5 SUBMISSIONS

Certification

General: Submit evidence that proposed fixtures are listed in the WaterMark Product Database.


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Samples

General: Submit samples listed in the Sanitary fixtures samples schedule.

2 PRODUCTS

2.1 PRODUCTS

Laundry troughs and tubs

Standard: To AS/NZS 1229.

Sealants

General: Use only sealants that do not support microbial growth.

Colour: To match fixture.

Wash basins


3 EXECUTION

3.1 INSTALLATION

General

Accessories: Use manufacturer's brackets and accessories if these are available and suitable for the

mounting substrate.

Protection: Deliver fixtures to site protected from damage under site conditions by coatings, coverings

and packaging. Remove only sufficient protection to permit installation.

Installation

Connections: Connect to each fixture supply and waste services. Install plumb and level.

Cutting and fitting: If it is necessary to cut and/or fit substrate to install an item, carry out this before the

surface is finished or painted. Remove items when required for painting and protect until re-installed.

Cap or plug the open ends of pipes. Reinstall when painting and finishing is complete.

Substrate and fixings: Before installation, make sure that the substrate to which the fixtures are to be

installed is adequate for the intended loads and fixings methods. In solid walls, confirm adequacy of the

material at fixing locations.

Noggings: In framed construction, provide a solid nogging at each fixing point.


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Vitreous china fixtures

General: Undertake preparation, assembly, connections to water supply and sanitary plumbing,

application of slurries and sealants in sequence. Install the fixture without stressing its attachment

points.

3.2 FIXTURES

Baths

Standard: Install to AS/NZS 2023 Appendix B.

Frame supports: Make sure that all legs or feet are equally loaded.

Position: Set bath firmly with required points fully supported, level and flush.

Ventilation: Provide ventilation to enclosed spaces under each bath.

Size: Aggregate free area of ventilating openings ≥ 5000 mm2.

Wall hung basins

General: Set basins firmly to walls or vanities as detailed. Connect through trap to the drainage system.

Shower cabinets

General: Install to manufacturer's recommendations and details. Make sure that doors fit closely and

accurately. Test for water egress around sides and base.

Shower bases

General: Sit base firmly in place to manufacturer's recommendations and details and connect to

drainage service, ready for following work.

Vanities

General: Install to manufacturer's recommendations and details. Seal top and upstand to wall surface.

Seal cut surfaces to prevent moisture penetration.

3.3 COMPLETION

Damage

General: Inspect all work and replace or repair to factory condition damaged or marked fixtures and

components.

Protective coatings

General: Immediately before the date for practical completion, remove all protective coatings and

stickers and clean surfaces. Check and clean debris from traps.


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4 SELECTIONS

4.1 SANITARY FIXTURES

Baths schedule

Location

A B C

Brand

Catalogue number or model

Material

Size

Type

Wall thickness

Waste outlet size

Installation and support

Overflow

Basins schedule

Location

A B C

Brand


Material

Colour

Bowl size (nominal)

Soap recesses


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Location

A B C

Sides

Supports

Overflow

Number of tap holes

Trap

Location

Rim height from floor

Bidettes and bidets schedule

Location

A B C

Brand


Type

Material

Type

Water supply

Load test to AS 3494 Appendix A

Cisterns schedule

Location

A B C

Brand


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Location

A B C


Type

Material

Colour

Nominal flush (litres)

Water star rating to AS/NZS 6400

Cleaners sinks schedule

Location

A B C

Brand


Trap material

Flush valves schedule

Location

A B C

Brand


Trap material

Laundry tub schedule

Location

A B C


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Location

A B C

Brand


Shower cabinets schedule

Location

A B C

Brand


Shower bases schedule

Location

A B C

Brand


Stainless steel sinks schedule

Location

A B C

Type

Grade

Thickness

Bowls

Number of tap holes

Waste outlet


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Location

A B C

Outlet plug

Trap

Appliance connections

Drainer

- Location

- Surface

- Overall length (sink and drainer)

- Overall width

- Splashback

- Tiling flange

- Fascia

- Drainer backing

- Backing to splashback and fascias

- Sink support

- Bench inset sink

Fixing

Seating

Urinal assemblies schedule

Location

A B C


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Location

A B C

Type

Flushing system

Outlet connector

Foot grating

Material

Supports

Cisterns

Trap


Fixings

Vanity schedule

Location

A B C

Brand


Material

Top style

Number of tap holes

Cabinet finish

Cabinet hardware


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WC pans, schedule

Location

A B C

Type

Brand


Material

Colour

Seat form

Trap


Sanitary fixtures samples schedule

Location

A B C


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HYDRAULIC 0811 Sanitary fixtures

0812 TAPWARE

1 GENERAL


General

General: Provide tapware.



General



- [complete/delete]

1.3 STANDARDS

Authorised products


Operator.

Standards

Sanitary fixtures: To ATS 5200.

Design for access and mobility: AS 1428.1, AS 1428.2 and AS 1428.3.


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Labelling



1.4 SUBMISSIONS

Certification

General: Submit evidence that proposed tapware is listed in the WaterMark Product Database.

Samples

General: Submit samples listed in the Tapware samples schedule.

2 PRODUCTS

2.1 PRODUCTS

Accessories

General: Provide escutcheons and cover plates over visible penetrations. Finish and material to match

adjacent fixtures.

Sealants

General: Use only sealants that do not support microbial growth.

Colour: To match fixture.

Tap and valve heads

Metal heads and handles: Provide brass fittings or a suitable bush to prevent electrolysis and growth.

Plastic heads and handles: Provide compact fittings designed to prevent fracture and exposure of jagged

or rough edges.

Vandal-proof heads: Provide vandal-proof or anti-tampering devices for the designated types.

Water efficiency

Shower heads: To AS/NZS 3662 and suitable for the pressures and pressure differences of the supplied

water.

Water efficient tapware: Tested and labelled with their water efficiency rating to AS/NZS 6400.

Thermostatic mixing valves

Standard: To AS 4032.1.

Requirement: Provide thermostatic mixing valves that automatically control the temperature at the

mixed outlet to a presealed temperature and suitable for the number of outlets served by the individual

valve.


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Controls: Incorporate the following:

- A temperature sensitive automatic control that maintains temperature at the pre-selected setting and rapidly shuts down the flow if either supply system fails, or if the normal discharge water temperature is exceeded.

- Hot water flush facility.

3 EXECUTION

3.1 INSTALLATION

General

General: Install to manufacturer's recommendations. Use manufacturer's recommended tools and

templates.

Location

General: Locate to dimensions as documented.

Installation

General: Install level, plumb and true to line in the required location. Make sure moving parts function

freely and without obstruction. Do not modify supplied units.

Seal: Provide resilient seals between fixtures and backnuts.

Fixing: Provide rigid fixing for tapware so that it does not move in normal operation.

Cutting and fitting

General: If it is necessary to cut and/or fit substrate to install, an item carry out this before the surface is

finished or painted. Remove items when required for painting and protect until reinstalled. Cap or plug

the open ends of pipes. Reinstall items when painting and finishing is complete.

Tap positions

General: Locate hot tap to the left of, or above, the cold tap.

3.2 COMPLETION

Adjustment

General: Inspect and adjust tapware for correct and smooth operation. If adjustment does not rectify

incorrect or defective operation, replace units.

Damage

General: Inspect all work and replace or repair to factory condition damaged or marked fixtures and

components.

Foreign matter: Inspect for presence of foreign matter particularly on tap seats. Remove if found.

Replace damaged seats.


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Protective coatings

General: On completion of the tapware installation remove all protective coatings and stickers and clean

surfaces. Check and clean debris from traps.

Thermostatic mixing valves

Field testing and maintenance: To AS 4032.3.

4 SELECTIONS

4.1 TAPWARE

Bath tapware schedule

Type or location

A B C

Brand


Finish

Outlet type

Plug

Spindle

Vandal resistant construction

Water star rating

Basin tapware schedule

Type or location

A B C

Brand


Finish

Outlet type


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Type or location

A B C

Plug

Spindle


Miniature stop valves

Water star rating

Laundry trough and tub tapware schedule

Type or location

A B C

Brand


Laundry extension arm type

Laundry extension arm extension

Finish

Mounting

Spindle



Water star rating

Shower tapware schedule

Type or location

A B C


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Type or location

A B C

Brand


Finish

Hand shower

Shower head

Spindles


Water star rating

Sink tapware schedule

Type or location

A B C

Brand


Finish

Outlet reach

Outlet type

Plug

Spindle




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Type or location

A B C

Water star rating

Flush valves schedule

Type or location

A B C

Brand


Other tapware schedule

Type or location

A B C

Brand


Finish

Spindle



Water star rating

Proprietary fittings and fixtures schedule

Type or location

A B C

Brand



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Type or location

A B C

Dimensions

Material and finish

Number off

Tapware samples schedule

Type or location

A B C


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HYDRAULIC 0812 Tapware

0814 HYDRAULIC PUMPS

1 GENERAL


General

General: Provide pumps.



General



- [complete/delete]

1.3 SUBMISSIONS

Products – documentation

Type tests: Required.

Standard: To AS 2417.

Accuracy of measurement: Grade 2 to AS 2417.

Type test records: Submit type test curves for each size and type of pump marked with the duty point.


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2 PRODUCTS

2.1 COMPONENTS

Control panels

General: Provide control panels to suit the controls. Mount switches, and indicating lights on the door.

Mount motor starters, relays and switchgear and terminals on DIN rails inside the cabinet. Run cables in

trunking or looms.

Labelling: Label all components. Number both ends of each cable and number terminal strips to match

the circuit diagram. Provide a laminated circuit diagram inside the cabinet.

Metalwork: Vandal proof cabinet constructed from metallic zinc coated steel with powder coat finish.

Locking: Provide a hinged and lockable door with 2 keys.

Protection: Degree of protection IP54 or better.

Controls – dual pump installations

General: Provide controls to alternate the pumps after each cycle of operation, start the idle pump if the

other fails, and activate an audible alarm and a flashing warning light to indicate a failure.

Alarm bells: Mount on an external wall. Provide alarm mute.

Meters: Provide an hours-run meter to each motor.

Selector: Provide an auto-off-on selector for each pump.

Warning lights: Provide separate lights to indicate power available, run for each pump, fault for each

pump and other faults.

Float switches

Type: Micro switch. Provide one level switch for each liquid level to be detected.

Construction: Double encapsulated hermetic construction designed for long life submerged. Provide a

clamp to permit accurate adjustment of levels.

Cable: Low moisture absorption type.

Marking

General: Provide a robust label: On each pump or pump set showing design flow rate, head,

temperature of pumped medium, casing, impeller and shaft materials.

Motors

Dimensions and performance: To IEC 60072-3.


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Installation: To AS 60034.7.

Motors ≥ 0.75 kW: Three phase, flange mounted.

Overload protection: Provide each motor with overload protection.

Performance:

- Efficiency: Motors documented as high efficiency to AS/NZS 1359.5 Section 3, all other motors to AS/NZS 1359.5 Section 2.

- Power factor at full rated output: ≥ 0.72 for single phase motors, ≥ 0.83 for three phase motors.

Selection: Provide motors selected for the maximum number of starts per hour of the installed system

and to provide efficient, non-overloading pumping sets.

Power rating: At least the maximum power required by the pump when projecting the system resistance

curve to the maximum impeller size for the pump casing size.

Degree of protection: IP54 or better.

Shaft: If the impeller is mounted directly on the motor shaft use grade 416 stainless steel for the shaft.

Pressure vessels


Type: Diaphragm pressure tanks of fabricated steel construction, epoxy coated on metal surfaces in

contact with water. Precharge the tanks with air.

2.2 PUMPS – END SUCTION CENTRIFUGAL

General

Standard: To ISO 2858 or DIN EN 733.

Type: Close coupled pump accepting standard flange-mounted motors.

Casing pressure rating: The greater of 1.6 MPa, and 1.5 times the total of the pump shut-off head plus

the static and system pressures.

Casing material: As scheduled:

- Cast iron to AS 1830 Table1 (ISO 185/JL/250), minimum.

- Bronze, grade 836B.

Balancing: Statically and dynamically balance completed rotating assemblies.

Impellers: One piece shrouded type with machined sealing collars constructed from stainless steel or

grade 836B bronze.


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Shaft: Solid grade 416 stainless steel, machined all over, free of stress concentrations.

Shaft sleeves: Provide a sleeve extending the full length of the seal housing.

Shaft seals: Provide mechanical seals compatible with carbon elements rotating against a ceramic

stationary face.

2.3 PUMPS – IN-LINE CIRCULATING

General

General: Comply with the requirements for Pumps - End-suction centrifugal except as follows.

Mounting: Suitable for mounting with the shaft vertical or horizontal.

Impellers: May be fixed to the motor shaft.

Radial bearings: Ceramic sleeve or ball bearing.

Axial bearings: Carbon/ceramic sleeve or ball bearing.

Pump housings: Cast iron or bronze.

Casing arrangement: Back pullout.

Sealing: Seal motors and electrical connections to protect against ingress of condensation.

2.4 PUMPS – HOT WATER CIRCULATING

General

General: In-line circulator pump and motor with bronze housing and stainless steel or non-ferrous

corrosion-resistant wetted parts.

Control: Provide time clock for after hours control.

2.5 PUMPS – SUBMERSIBLE

Type: Vertical, fully flooded submersible, close coupled, single stage, centrifugal.

Bearings: Deep groove ball type, sealed for life.

Cable: Heavy duty, low water absorption type with replaceable gland seal at the pump.

Casing material: Cast iron to AS 1830 Table1 (ISO 185/JL/250), minimum. Finish outer casing and

immersed equipment and fittings with anti-corrosive protective coatings.

- Degree of protection: Water tight enclosure, IP68.

Float switches: Integral.


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Impellers: Cast iron, non-clog type.

Motors: Three phase, with windings protected by thermistors and moisture sensor. Provide automatic

reset.

Mounting: Provide duckfoot pedestal bases with guide rails or guide wire system.

Nuts and bolts: Stainless steel.

Shaft seals: Replaceable double mechanical type with rotating seal rings of silicon carbide.

Shafts: Stainless steel to ASTM A240/A240M.

Suction screens: Stainless steel or plastic.

2.6 WATER SUPPLY PUMP ASSEMBLY

General

General: Provide automatically controlled self-priming end-suction centrifugal pumps. Factory assemble

the pump and motor on a common base plate with mounting pads.

Noise and vibration: Minimise noise and vibration, using anti-vibration mountings and flexible couplings

on both sides of the pump.

2.7 PRESSURE BOOSTER SYSTEM

Single pressure booster system

General: Provide a pump, motor and pressure vessel package with in-built controls to maintain the

pressure at the pump discharge between the maximum and operating pressures.

Construction: Factory-assemble the unit with pump, pressure vessel, control panel and ancillaries on

steel frame mounted on steel base plate.

Dual pressure booster system

General: Provide a dual system consisting of two identical pump and motor sets, each serving its own

pressure vessel and operated by an interconnected automatic control mechanism. Construction: Factory

assemble the units with pumps, pressure vessels, control panel and ancillaries on steel frames mounted

on steel base plates.

Controls: Provide a pressure switch to sense excessively low suction pressure, shut down the pumps and

signal an alarm. Provide manual reset.

Pressure gauges

General: Provide a pressure gauge to indicate the pressure at the inlet and outlet of the system.


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Automatic tank to mains changeover controls

General: If recovered water including rainwater is used as an alterative supply to mains water, provide

automatic changeover controls.

Operation: Use mains water when the water level in the storage tank is below set level or otherwise

unavailable, demand is low or would cause excessive pump starts. In all other cases use stored water.

Inclusions: Provide low voltage water level switch, dual check valves to prevent cross connection and

motorised valves for mains and stored water changeover and all associated wiring and controls.

2.8 PUMPED DISCHARGE SYSTEM

Description

General: Provide a pumping system consisting of a wet well to which stormwater or subsoil drainage

discharge is gravitated, and from which it is removed by two identical, automatically controlled pumps.

Provide necessary piping, valves, rising main, electric wiring and alarms.

Fully submersible pumps

General: Connect the pump motor to the control panel via a single continuous length cable, with

sufficient slack to allow for adjustment of levels. Provide corrosion-resistant chains attached to the

pump casing, to enable the pump to be raised and lowered from ground level.

Non-submersible (centrifugal) pumps

General: Provide pumps capable of operating safely in a dry state. Provide priming facilities, foot valve

and strainer on the suction line.

Controls

General: In addition to the requirements of Controls – dual pump installations provide float switches to

detect the following and control the pumps:

- Stop duty pump.

- Start duty pump.

- Stop standby pump.

- Start standby pump.

- Overflow (to signal an alarm).

Pressure gauges

General: Provide a pressure gauge to indicate the pressure at the outlet of the pump.

3 EXECUTION

3.1 INSTALLATION

Standards

Hot and cold water service pumps: Install to AS/NZS 3500.1 Section 11.


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Stormwater pumps: Install to AS/NZS 3500.3 Section 9.

Connections

General: Arrange pumps, piping and valves so that individual pumps can be removed with minimal drain

down and disturbance to the connected piping. Support pipes independently of pumps.

Connections: Install vibration isolating couplings in the connecting pipes at the pumps. Provide couplings

selected for a working pressure at least twice the system design pressure.

Vibration mounts

General: Provide corrosion-resistant anti-vibration mounts under each pump. Alternatively, if the pumps

are installed on a base plate the mounts may be installed under the base plate.

Pressure tappings

General: Provide a pressure tapping on the inlet and discharge of each pump.

Fixing

General: Fix all pumps and pump sets to the supporting structure. Use expanding shield anchors for

concrete.

3.2 COMPLETION

Commissioning

General: Commission to the manufacturers' recommendations.

Testing

General: Provide the following tests for each pump and pump set before the date for practical

completion:

- Pump operation: Test for correct pump rotation and operation.

- Automatic changeover: Test changeover sequence under all operational combinations.

- Level controls: Operate pumps, measure levels and adjust if necessary.

- Safety controls: Simulate fault for each safety control.

- Alarms: Simulate alarm condition. Verify correct alarm raised.

- Motors: Measure motor current and adjust motor overloads to suit.

- Completion test: Provide a full operational test to verify compliance.

4 SELECTIONS

4.1 SCHEDULES

Pump schedule

Properties Pump designation

P1 P2 P3

Pump type


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Properties Pump designation

P1 P2 P3

Liquid being pumped

Number of pumps in system

Flow (L/s) per pump

Duty head at flow rate (kPa)

Shut-off head (kPa)

Net positive suction head (NPSH) (m)

Maximum fluid temperature (°C)

Maximum pump speed (r/min)

Minimum efficiency at duty point (%)

Impeller material

Casing material

High efficiency motor

Minimum motor (kW)

HYDRAULIC 0814 Hydraulic pumps

0821 STORMWATER – BUILDINGS

1 GENERAL


General

General: Provide stormwater installation.



General



- Service trenching.

- Roofing – combined and other Roofing worksections.

- Hydraulic pumps for pumped discharge.


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1.3 INTERPRETATION

Definitions

General: For the purposes of this worksection the definitions given below apply.

- Pipe surround: Includes pipe overlay, pipe side support, side zone and haunch zone.

1.4 STANDARDS

Stormwater drainage

Standard: To AS/NZS 3500.3.

1.5 INSPECTION

Notice

Inspection: Give sufficient notice so that inspection may be made at the following stages:

- Excavated surfaces.

- Concealed or underground services.

1.6 SUBMISSIONS

Samples

General: Submit samples of the following:

- Each type of imported pipe bedding material.

- Each type of filter material.

2 PRODUCTS

2.1 MATERIALS

Channel drain, grating and sumps

General: Provide proprietary PVC-U channel drain complete with friction fit grating sections. Provide

matching sumps.

Surface drains – half round pipe

General: Provide surface drains lined with half round pipe, including bedding and jointing. Conform to

the Lined surface drain schedule.

Surface drains – grated trenches

General: Provide precast or cast in situ concrete lined trenches with bitumen coated cast-iron or

galvanized steel gratings.


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3 EXECUTION

3.1 TOLERANCES

General

General: Conform to the Pipeline tolerances table. These tolerances are conditional on falls to outlets

being maintained and no part of a pipeline being at less than the designated gradient.

Pipeline tolerances table

Permissible angular deviation from alignment

Permissible displacement from alignment

Horizontal 1 in 300 15 mm

Vertical 1 in 500 5 mm

3.2 STORMWATER DRAINS

Location

General: Provide stormwater drains to connect downpipes, surface drains, subsoil drains and drainage

pits to the outlet point or point of connection. Make sure that location of piping will not interfere with

other services and building elements not yet installed or built. Subject to the preceding and documented

layouts, follow the most direct route with the least number of changes in direction.

Downpipe connections: Turn up branch pipelines with bends to meet the downpipe, finishing 50 mm

(nominal) above finished ground or pavement level. Seal joints between downpipes and drains.

Laying

General: Lay in straight lines between changes in direction or grade with sockets pointing up hill. If other

pipes are adjacent, set each pipe true to line and complete each joint before laying the next pipe. If work

is not continuous cap open ends to prevent entry of foreign matter.

Identification

General: Lay a detectable strip or plastic tape in the trench after pipe laying, testing and initial

backfilling.

Pipe underlay

General: Bed piping on a continuous underlay of bedding material, at least 75 mm thick after

compaction. Grade the underlay evenly to the gradient of the pipeline.

Chases: If necessary, form chases to prevent projections such as sockets and flanges from bearing on the

trench bottom or underlay.


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Pipe surrounds

General: Place the material in the pipe surround in layers ≤ 200 mm loose thickness, and compact

without damaging or displacing the piping.

Anchor blocks

General: If necessary to restrain lateral and axial movement of the stormwater pipes provide reinforced

concrete anchor blocks at junctions and changes of grade or direction.

Encasement

General: Conform to the Stormwater pipeline schedule.

Location: Encase the pipeline in concrete at least 150 mm above and below the pipe, and 150 mm each

side or the width of the trench, whichever is the greater.

Concrete: Grade N20 to AS 1379.

Thermal movement

General: Arrange piping to accommodate thermal expansion. Provide proprietary expansion joints in

copper and plastic pipes where pipe flexibility is not sufficient to absorb movement. Make sure that

movement does not strain branch connections.

3.3 SUBSOIL DRAINS

General

General: Provide subsoil drains to intercept groundwater seepage and prevent water build-up behind

walls and under floors and pavements. Connect subsoil drains to surface drains or to the stormwater

drainage system as applicable.

Piping: Conform to the Subsoil pipeline schedule.

Trench width: ≥ 450 mm.

Pipe depth: Provide the following minimum clear depths, measured to the crown of the pipe, where the

pipe passes below the following elements:

- 100 mm below formation level of the pavement, kerb or channel.

- 100 mm below the average gradient of the bottom of footings.

- 450 mm below the finished surface of unpaved ground.

Jointing

General: At junctions of subsoil pipes provide tees, couplings or adaptors to AS 2439.1.

Pipe underlay

General: Grade the trench floor evenly to the gradient of the pipeline. If the trench floor is rock, correct

any irregularities with compacted bedding material. Bed piping on a continuous underlay of bedding


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material, at least 75 mm thick after compaction. Lay the pipe with one line of perforations at the

bottom.

Chases: If necessary, form chases to prevent projections such as sockets and flanges from bearing on the

trench bottom or underlay.

Pipe surrounds

General: Place the material in the pipe surround in layers ≤ 200 mm loose thickness, and compact

without damaging or displacing the piping.

Depth of overlay:

- To the underside of the bases of overlying structures such as pavements, slabs and channels.

- To within 150 mm of the finished surface of unpaved or landscaped areas.

Geotextiles

General: Provide polymeric fabric formed from plastic yarn composed of at least 85% by weight

propylene, ethylene amide or vinyledenechloride and containing stabilisers or inhibitors which provide

resistance to deterioration due to ultraviolet light.

Marking: To AS 3705.

Protection: Provide heavy duty protective covering. Store clear of the ground and out of direct sunlight.

During installation do not expose the filter fabric to sunlight for more than 14 days.

Filter socks

General: Provide polyester permeable socks capable of retaining particles of 0.25 mm size. Securely fit

or join the sock at each joint.

3.4 PITS

Finish to exposed surfaces

General: Provide a smooth, seamless finish, using steel trowelled render or concrete cast in steel forms.

Corners: Cove or splay internal corners.

Metal access covers and grates


Cover levels: Top of cover or grate, including frame:

- In paved areas: Flush with the paving surface.

- In landscaped areas: 25 mm above finished surface.

- Gratings taking surface water runoff: Locate to receive runoff without ponding.


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3.5 TESTING

Pre-completion tests

General: Before backfilling or concealing, carry out the following tests:

- Downpipes within buildings: Air or water pressure test to AS/NZS 3500.3 Section 10.

- Site stormwater drains and main internal drains: Air or water pressure test to AS/NZS 3500.3 Section 10.

- Rising mains from pumped discharge: Water pressure test to AS/NZS 3500.3 Section 10.

Leaks: If leaks are found, rectify and re-test.

3.6 COMPLETION

Cleaning

General: Clean and flush the whole installation.

4 SELECTIONS

4.1 STORMWATER

Stormwater pipeline schedule

Type or location

A B C

Pipe material and nominal size

Class

Jointing

Pipe support

Concrete encasement

Pipe bedding schedule

Type or location

A B C

Bedding application

Bedding zone

Bedding type


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Type or location

A B C

Material and grading

Required density

Lined surface drain schedule

Type or location

A B C

Lining material

Size (mm)

Grating

Subsoil pipeline schedule

Type or location

A B C

Trench depth (mm)

Pipe size (nominal)

Pipe type

Pipe class

Other requirements

Pit schedule

Type or location

A B C

Size (mm)

Cover type


JANUARY 2012

DATE

Type or location

A B C

Remarks

HYDRAULIC 0821 Stormwater – buildings


JANUARY 2012

DATE

0822 WASTEWATER

1 GENERAL


General

General: Provide sanitary plumbing and drainage.



General



- Service trenching.

- Sanitary fixtures.

1.3 STANDARDS

Authorised products


Operator.

Sanitary plumbing and sanitary drainage

General: To AS/NZS 3500.2.

1.4 INSPECTION

Notice




1.5 SUBMISSIONS

Certification

General: Submit evidence that proposed tapware is listed in the WaterMark Product Database.


JANUARY 2012

DATE

2 PRODUCTS

2.1 SEWAGE TREATMENT

Septic tanks

General: Conform to the Septic tank schedule.

Standard: To AS/NZS 1546.1.

Certification: Required.

Certification provider: An organisation accredited by the Joint Accreditation System of Australia and

New Zealand (JAS-ANZ).

Effluent disposal


Agricultural pipes: Perforated plastic pipe to AS 2439.2 Type 3, stiffness class SN2, DN 100.

2.2 TRAPS AND GULLIES

General

Traps: Conform to the Traps schedule.

Location: If possible, conceal traps and wastes in the fabric of the building.

Gullies: Conform to the Gullies schedule.

Inspection chambers and sumps

General: Conform to the Inspection chamber and sumps schedule.

3 EXECUTION

3.1 SANITARY PLUMBING

Location

General: Verify location and invert of piping before commencing installation. Make sure that location of

piping will not interfere with other services and building elements not yet installed or built. Subject to

the preceding and documented layouts, follow the most direct route with the least number of changes

in direction.

Ducts: If installed in ducts, locate and fix stacks, wastes and pipes independently of other services.

Arrange so they are easily accessible and removable throughout their entire length.

Piping: Conform to the Sanitary plumbing piping schedule.


JANUARY 2012

DATE

Discharge from air handling systems

Trays, sumps and plumbing: To AS/NZS 3666.1.

Thermal movement

General: Arrange piping to accommodate thermal expansion. Provide proprietary expansion joints in

copper and plastic pipes where pipe flexibility is not sufficient to absorb movement. Make sure that

movement does not strain branch connections.

Vent pipes

General: Staying to roof: If fixings for stays penetrate the roof covering, seal the penetrations and make

watertight.

Terminations: Provide vent cowls of the same material as the vent pipe.

Wet area floors

General: Where drainage connections pass through wet area floors, terminate 4 mm below the

substrate surface.

3.2 SANITARY DRAINAGE

Laying

General: Lay in straight lines between changes in direction or grade with sockets pointing up hill. If other

pipes are adjacent, set each pipe true to line and complete each joint before laying the next pipe. If work

is not continuous cap open ends to prevent entry of foreign matter.

Piping: Conform to the Sanitary drainage piping schedule.

Pipeline identification

General: Lay detectable plastic warning tape, 300 mm above buried piping, for the full length of the

piping.

3.3 PIPING

Finishes

General: Finish exposed piping, including fittings and supports, as follows:

- In internal locations such as toilet and kitchen areas: Chrome plate copper piping to AS 1192 service condition 2, bright.

- Externally, and steel piping and iron fittings internally: Paint.

- In concealed but accessible spaces (including cupboards and non-habitable enclosed spaces): Leave copper and plastic unpainted except for identification marking. Prime steel piping and iron fittings.

Valves: Finish valves to match connected piping.

Supports

General: Conform to the Pipe support schedule.


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Tolerances

General: Conform to the Pipeline tolerances table. These tolerances are conditional on falls to outlets

being maintained and no part of a pipeline being at less than the designated gradient.

Pipeline tolerances table

Permissible angular deviation from alignment

Permissible displacement from alignment

Horizontal 1 in 300 15 mm

Vertical 1 in 500 5 mm

Trade waste

General: Conform to Sanitary plumbing, Sanitary drainage and the following.

- Piping: Conform to the Trade waste piping schedule.

- Disposal: Provide necessary sumps or interceptors.

Laboratory wastes

General: If there are chemically corrosive effluent wastes, provide compatible traps and waste

connections, and drain to a treatment pit.

Trap material: Conform to the Laboratory traps schedule.

3.4 TESTS

Pre-completions tests

Before backfilling or concealing: Test to AS/NZS 3500.2 Section 13.

Leaks: If leaks are found, rectify and re-test.

3.5 COMPLETION

Cleaning

General: On completion clean and flush the whole installation.

4 SELECTIONS

4.1 WASTEWATER

Sanitary plumbing piping schedule

Type or location

A B C

Pipe material

Nominal size


JANUARY 2012

DATE

Type or location

A B C

Grade or class

Jointing method

Sanitary drainage piping schedule

Type or location

A B C

Pipe material

Nominal size

Grade or class

Jointing method

Bedding material

Trade waste piping schedule

Type or location

A B C

Pipe material

Nominal size

Grade or class

Jointing method

Bedding material

Pipe support schedule

Type or location

A B C


JANUARY 2012

DATE

Type or location

A B C

Type

Maximum spacing

Fixing method

Traps schedule

Type or location

A B C

Type

Material

Dimensions (mm)

Gullies schedule

Type or location

A B C

Overflow gully

Size (mm)

Cover type

Inspection chamber and sumps schedule

Type or location

A B C

Size (mm)

Cover type

Remarks


JANUARY 2012

DATE

Septic tank schedule

Type or location

A B C

Form

Material

Capacity (L)


JANUARY 2012

DATE

HYDRAULIC 0822 Wastewater

0823 COLD AND HEATED WATER

1 GENERAL


General

General: Provide cold water and heated water systems.



General



- [complete/delete]

1.3 INTERPRETATION

Definitions

General: For the purposes of this worksection the definitions given below apply.

- Heated water: Water that has been intentionally heated. It includes hot water and warm water.

- Mineral wool (including glasswool and rockwool): Entangled matt of fibrous non-crystalline material derived from inorganic oxides or minerals, rock, slag or glass, processed at high temperatures from a molten state.

1.4 STANDARDS

General

Water supply: To AS/NZS 3500.1.

Heated water supply: To AS/NZS 3500.4.

Backflow prevention: To AS/NZS 2845.1 and AS 2845.2.

Copper pipe: To AS 4809.

Microbial control: To AS/NZS 3666.1 and AS/NZS 3666.2 and the recommendations of SAA/SNZ HB 32.


JANUARY 2012

DATE

Authorised products


Operator.

Installation of mineral wool insulation

General: Comply with the ICANZ Industry Code of Practice for the Safe Use of Glass Wool and Rock Wool

Insulation.

Marking: Deliver mineral wool products to site in packaging labelled FBS1 BIOSOLUBLE INSULATION.

Labelling



1.5 INSPECTIONS

Notice

Inspection: Give sufficient notice so that inspection may be made of the following:



1.6 SUBMISSIONS

Certification

General: Submit evidence that proposed components are listed in the WaterMark Product Database.

Samples

General: Submit samples of accessories identified by proprietary item, including the following:

- Valves.

- Instruments, including gauges and thermostats.

Type-test reports

General: Submit type-test reports from a Registered testing authority to verify conformance as follows:

- Spread of flame index: To AS/NZS 1530.3.

- Smoke developed index: To AS/NZS 1530.3.

- Flammability index: To AS 1530.2.

2 PRODUCTS

2.1 PRODUCTS

Pressure control valves

General: Provide reduction valves, pressure limiting valves, or ratio valves, which produce the necessary

reduction in pressure.


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DATE

Backflow prevention devices

General: Conform to the Testable backflow prevention devices schedule.

Standard: To AS/NZS 2845.1 and AS 2845.2.

Line strainers

Type: Low resistance, Y-form bronze bodied type, with screen of dezincification resistant brass,

corrosion-resistant stainless steel, or monel.

Screen perforations: 0.8 mm maximum.

Pressure gauges

General: Provide gauges with full scale reading in kPa, a minimum nominal diameter of 63 mm and with

a full scale value between 130% and 200% of the working pressure.

Bourdon tube gauges: To AS 1349.

Accuracy grade: Industrial.

Installation: Comply with the recommendations of AS 1349 Appendix B. Isolate from pump pulsations

and provide with a gauge cock.

Water tanks

General: To ATS 5200.026.

Materials: To AS/NZS 3500.1 clause 2.5.

Polyethylene water tanks: To AS/NZS 4766.

Temperature: Do not exceed the rated service temperature of the tank material.

Flywire: Provide plastic flywire covering to overflow and vent pipes.

Water meters

Standard: To the AS 3565 series.

Installation: To the requirements of the Network Utility Operator.

3 EXECUTION

3.1 PIPING

Location

Mains connection: Connect the cold water supply system to the Network Utility Operator's main

through a stop valve and meter.


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DATE

Cold water system: Provide the cold water supply system, installed from the meter to the draw-off

points or connections to other services. Conform to the Piping system schedule.

Heated water system: Provide the heated water system, installed from the cold water connection points

to the draw-off points or connections to other services. Conform to the Piping system schedule.

Finishes

General: Finish exposed piping, including fittings, cover plates and supports, as follows:

- Chrome plate copper piping to AS 1192 service condition 2, bright in internal locations such as toilet and kitchen areas:

- Paint external above ground piping, and internal steel piping and iron fittings exposed to view.


- Valves: Finish valves to match connected piping.

Fittings and accessories

General: Provide the fittings necessary for the proper functioning of the water supply system, including

taps, valves, backflow prevention devices, pressure and temperature control devices, strainers, gauges

and automatic controls and alarms.

Provision for dismantling: Arrange piping by the provision of unions or similar so that valves, taps and

other maintainable components can be removed for maintenance without disturbing or cutting adjacent

piping.

Material identification marks

General: Pipes with grade or class identification markings: Install so that the markings are visible for

inspection.

Pipes under pressure embedded in concrete

General: Use only copper pipe and the minimum number of joints. Pressure test and rectify leaks before

the concrete is poured.

Valve spindles

General: If practicable, install valve spindles in a vertical position.

3.2 PIPING INSULATION

Location

General: Insulate all non-chrome plated heated water piping, fittings and valves.

Application: Fit insulation tightly to piping surfaces without gaps. Close butt ends of insulation sections.

Minimise number of joints. If the insulation is in half-sections, make only half-circumferential joints at

any one place. Seal longitudinal seams in foil laminate and fix insulation at maximum 500 mm centres

with polypropylene, zinc-coated steel or aluminium straps.


JANUARY 2012

DATE

Unions and other items requiring service: Install the insulation so that it is readily removable.

Fittings: Provide insulation with thermal resistance at least equal to than of the adjacent piping

insulation.

Insulation material

General: Provide insulation material as listed in Piping insulation schedule.

Mineral wool: Resin-bonded to form tubular sections faced with factory bonded aluminium foil

laminate.

Polyester: Moulded tubular sections faced with factory bonded aluminium foil laminate or integral

polyester scrim.

Polyolefin foam: Cross-linked closed cell polyolefin foam faced with factory bonded aluminium foil

laminate.

Fire hazard properties

Spread of flame index: 0 where tested to AS/NZS 1530.3.

Smoke developed index: ≤ 3 when tested to AS/NZS 1530.3.

Flammability index of facing materials: ≤ 5 when tested to AS 1530.2.

Aluminium foil laminate sheet

Standard: Heavy duty to AS/NZS 4200.1.

Aluminium foil laminate tape

Adhesive: Non-toxic, high tack synthetic pressure sensitive type.

Liner: Silicone coated paper.

Backing: Aluminium foil laminate.

Minimum width: 50 mm.

Mechanical properties: Equal to or better than the polyethylene tape serial number F11 referenced in

AS 1599.

Metal sheathing

General: Provide metal sheathing to all piping insulation:

- In plant rooms.

- Where exposed to weather.

- Where exposed to view.


JANUARY 2012

DATE

- Where subject to mechanical damage.

- On valves, pipeline components and pumps in sheathed piping.

General: Cover piping with metal sheathing sprung over the insulation in one piece with laps at least

30 mm wide, and fastened with self tapping screws or snap head rivets at 150 mm maximum centres.

Preform the sheathing to match the shape of the insulated pipe and fittings. Position laps to avoid water

penetration. In external locations weatherproof the joints and fixings using non-setting mastic.

Material: 0.5 mm thick metallic-coated steel sheet.

Surface preparation

General: Clean the surfaces to remove scale, rust, grease and dirt and prepare surfaces to suit the

insulation. Restore surface coatings, which have been damaged or affected by welding.

Insulation at pipe supports

General: Provide supports formed to fit around the insulation.

Protection: For pipes ≥ DN 25 either:

- Protect the insulation at the support point with metal sheathing extending sufficient distance both sides of the support so the insulation thickness is reduced by < 10%.

- Replace the insulation at the support point with a shaped timber or cork spacer block. Butt the insulation up to the spacer block and seal with silicone compound. Clad the block and insulation in 0.5 mm metallic-coated steel sheet extending 100 mm both sides of the support.

3.3 PITS

General

General: Install below ground water meters, stop valves and control valves, in concrete access pits with

removable pit covers.

Construction

Internal dimensions: To give 300 mm clear space all around the fittings in the pit.

Concrete: Grade N20 to AS 1379, 100 mm thick, reinforced with F82 fabric.

Pit covers: To AS 3996.

Installation

General: Grade floor to a point on one side and drain to the stormwater drainage system. Carry the pit

walls up to 50 mm above finished ground level. Cast in the pit cover frame flush with the top. Trowel the

top smooth.


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DATE

3.4 MARKING

Notice plate

General: Provide a notice plate containing condensed emergency instructions, legibly printed or

engraved on durable material resistant to defacement, at least 3 mm thick or mounted on board at least

3 mm thick, permanently fixed in a convenient position at the control valves.

3.5 VALVE BOXES

General

General: Provide cast-iron valve boxes with removable covers for access to underground gate valves.

Provide cast-iron sluice valve covers for access to sluice valves.

Installation

General: Set beneath each box a shaft formed of PVC-U pipe to give clear access to the valve wheel or

spindle. Set top flush with pavement surface, or 15 mm above unpaved surfaces, and encase in formed

concrete box 150 mm thick, with top surface trowelled smooth.

3.6 TESTING


Pressure tests: Before insulation is applied to joints pressure test piping to AS/NZS 3500.1 and

AS/NZS 3500.4 as appropriate. If leaks are found, rectify and re-test.

Cross connections: Isolate systems individually and check for cross connections.

Backflow prevention: To AS/NZS 3500.1.

Tapware: Check for leaks.

Completion test

General: Provide a full operational test to verify compliance with documented requirements.

3.7 COMPLETION

Commissioning

Strainers: Remove, clean and replace strainer baskets.

Cleaning: To AS/NZS 3500.1 Appendix H.

Disinfection: Disinfect to AS/NZS 3500.1 Appendix I.

Cold water systems: Test and commission to AS/NZS 3500.1 Section 16.

Heated water systems: Test and commission to AS/NZS 3500.4 Section 11.


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DATE

Testable backflow prevention devices: Test and commission to AS 2845.3 by a licensed plumber with

backflow device accreditation. Tag and certify to the requirements of the Network Utility Operator.

Charging

Completion: On completion of installation, commissioning, testing and disinfection, fill the system with

water, turn on control and isolating valves and the energy supply and leave the water supply system in

full operational condition.

Maintenance

Heated water systems: To AS/NZS 3500.4 Section 12 and AS/NZS 3666.2.

Maintenance manuals: To AS/NZS 3666.2.

4 SELECTIONS

4.1 COLD AND HEATED WATER

Piping system schedule

Type or location

A B C

Cold water

Material

Nominal size

Jointing method

Warm water

Material

Nominal size

Jointing method

Hot water

Material

Nominal size

Jointing method


JANUARY 2012

DATE

Isolating valves schedule

Type or location

A B C

Function

Description

Testable backflow prevention devices schedule

Type or location

A B C

Cross-connection hazard rating

Description

Piping insulation schedule

Type or location

A B C

Material

Minimum R-value of insulation m² K/W

Sheathing material


JANUARY 2012

DATE

HYDRAULIC 0823 Cold and heated water

0824 FUEL GAS

1 GENERAL


General

General: Provide fuel gas installations.

Gas type: As documented.



General



- [complete/delete]

1.3 STANDARDS

Reticulated gas systems

General: To AS 5601.

Gas equipment


Industrial and commercial gas-fired appliances


Steel mains and services

Maximum operating pressure not more than 1050 kPa: To AS/NZS 4645.2.


JANUARY 2012

DATE

Flue cowls


1.4 INSPECTION

Notice




1.5 SUBMISSIONS

Certificate of appliance approval

Appliances with gas inputs < 500 MJ/hour: For each appliance where an approval code exists, submit a

certificate from the manufacturer stating that the appliance has AGA/ALPGA approval for operation with

the designated gas type.

Exposed piping

General: Submit proposals for location.

Production tests

Storage tanks: Submit evidence of testing to AS 1210.

2 EXECUTION

2.1 PIPING

Concealment

General: If practicable, install piping so that it is concealed within service ducts or non-habitable

enclosed spaces and does not appear on external walls. Otherwise, provide metal piping mounted on

metal brackets and provide metal cover plates at penetrations.

Piping

General: Conform to the Gas pipeline schedule.

Pipeline components

Valves: Conform to the Piping valve schedule.

Regulators: Conform to the Piping regulator schedule.

Finishes

General: Finish exposed piping, including fittings and supports, as follows:

- In internal locations such as toilet and kitchen areas: Chrome plate copper piping to AS 1192 service condition 2, bright.

- Externally, and steel piping and iron fittings internally: Paint.


JANUARY 2012

DATE


Valves: Finish valves to match connected piping.

2.2 VALVE BOXES

General

General: Provide cast-iron valve boxes with removable covers for access to underground valves.

Identification: Mark the box covers with the word GAS.

Installation

General: Set beneath each box a shaft formed of PVC-U pipe to give clear access to the valve wheel or

spindle. Set top flush with pavement surface, or 15 mm above unpaved surfaces, and encase in formed

concrete box 150 mm thick, with top surface trowelled smooth.

2.3 WALL BOXES

General

General: Provide wall boxes to house above ground valves and regulators.

Preferably show the location, size and finish on the drawings.

Construction

Body: 1.2 mm galvanized steel plate continuous welded box construction with leading edge folded twice

at 90 to form 25 x 25 mm frontal surround.

Fixing: Fix to masonry backing with four 10 mm galvanized masonry bolts.

Drainage and ventilation relief: Set the bottom of the box to fall outward. Form four 10 mm diameter

holes in the frontal surround section at box floor level.

Sleeves: Provide, to the box floor inlet and outlet pipes, sleeves formed of 1.2 mm thick steel pipe with

1.2 mm galvanized flanges to pipe diameter plus 50 mm. Bed each flange on epoxy mortar and rivet to

the floor of the box with four 3 mm diameter rivets.

Doors to boxes: Metal frame, glazed with 2.5 mm clear float glass. Provide lock, keys and two 100 mm

brass hinges.

Marking: Adhere to the glass a 200 x 100 mm white laminated plastic label, engraved with red letters IN

CASE OF EMERGENCY BREAK GLASS AND SHUT VALVES.


JANUARY 2012

DATE

2.4 PITS

General

General: If below ground, house control valves and regulators in concrete access pits with removable pit

covers.

Construction

Internal dimensions: To give 300 mm clear space all around the fittings in the pit.

Concrete: Grade N20 to AS 1379, 100 mm thick, reinforced with F82 fabric.

Pit covers: To AS 3996.

Marking: Mark pit covers with the word GAS.

Installation

General: Grade floor to a point on one side and provide a gravity drain to remove water from the pit. Do

not connect the drain to other substructures or drains. Carry the pit walls up to 50 mm above finished

ground level. Cast in the pit cover frame flush with the top. Trowel the top smooth.

2.5 LPG STORAGE SYSTEMS

Tank LPG storage

General: Conform to the LPG storage tank schedule.

Tank colour: White.

Certificate holders: Provide a galvanized steel pipe, one end fitted with a brass plug, one end threaded

and fitted with a threaded brass cap. Weld to the tank support member.

Cylinder LPG storage

General: Conform to the LPG storage cylinder schedule.

Fittings: Supply cylinders with regulators which have AGA/ALPGA approval.

Hoods

General: Provide a weatherproof protective steel cover to the valve and regulators of 450 L capacity

cylinders, together with hinge pins, padlock and key.

Function: For storage of current storage system approval and test certificates.

Marking: Mark the threaded cap with the phrase LPG CERTIFICATES.

Notices and signs

General: Required.


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DATE

2.6 MARKING

Underground installations

General: During backfilling lay plastic warning tape 300 mm above buried piping, for the full length of

the piping.

Warning tape: Minimum 100 mm width, with GAS PIPE UNDER marked continuously.

Marker plates: Provide galvanized steel or brass marker plates at ground level at each change of

direction in the underground pipeline, engraved to show the direction of the line and name of the

service. Inset marker plates in 150 x 150 x 150 mm concrete blocks, with the tops set flush with ground

level.

2.7 TESTING


General: Immediately before putting the fuel gas installation into operation, test the installation in

conformance with AS 5601 Appendix E.

2.8 MANUALS

General

General: Submit recommendations for the operation, care and maintenance of gas appliances, storage

tanks, valves, regulators and their associated fittings.

2.9 COMMISSIONING

General

General: On completion of installation and testing, turn on isolating and control valves, and purge and

charge the system.

Purging: Comply with the recommendations of AS 5601 Appendix D.

Appliances: Commission appliances.

Charging

Immediately before the date of practical completion: Fully charge the system with gas.

LPG systems: Fill gas storage containers and replace gas used in testing.

3 SELECTIONS

3.1 FUEL GAS

Piping valve schedule

Properties Location


JANUARY 2012

DATE

A B C

Function

Type

Operation

Material

Piping regulator schedule

Properties Location

A B C

Function

Type

Operation

Material

Gas pipeline schedule

Properties Location

A B C

Pipe material

Grade or class

Jointing

Nominal size

LPG storage tank schedule

Properties Location

A B C


JANUARY 2012

DATE

Properties Location

A B C

Tank capacity (L)

Liquid fill valve

Regulator

Liquid level gauge

Multivalve

Draw

Relief valve

Liquid take off fitting

Inspection plug

LPG storage cylinder schedule

Properties Location

A B C

Number of cylinders

Total capacity (L)

Method of securing and supporting

Enclosure

Fittings

Cylinder valve and regulator

- Function

- Type


JANUARY 2012

DATE

Properties Location

A B C

- Operation

- Material

3.2 APPLIANCES

Appliance schedule

Location Appliance

HYDRAULIC 0824 Fuel gas

0825 RAINWATER STORAGE SYSTEMS

1 GENERAL


General

General: Provide rainwater storage systems and ancillaries.



General



- [complete/delete]

1.3 STANDARDS

General

Stormwater drainage: To AS/NZS 3500.3.

Rainwater supply: To AS/NZS 3500.1.


JANUARY 2012

DATE

Metal tanks and rainwater goods: To AS/NZS 2179.1.

Design and installation: To the recommendations of SAA HB 230.

Authorised products


Operator.

Tanks: To ATS 5200.026.

Tank marking: Display the WaterMark symbol and other marking required by ATS 5200.026.

1.4 SUBMISSIONS

Manufacturer's warranty

General: Submit the tank manufacturer's warranty naming the Principal as warrantee. Include a copy of

the warranty in the operation and maintenance manual.

2 PRODUCTS

2.1 RAINWATER TANKS

General

General: Tanks to be structurally sound and watertight.

Openings: Designed to resist human load bearing forces and to prevent the inappropriate entry of

humans, animals, insects surface water, ground water and rubbish.

Accessories: Provide the accessories needed to complete the installation, including inlet and outlet

connections, and flywire screened overflow and access hole.

Accessory materials: Select from:

- Ultraviolet light resistant plastic.

- Corrosion resistant metal. Do not use copper or copper alloys with metallic coated steel tanks.

- The same material as the tank.

Access hole: Provide a vermin proof, child proof access hole above the high water level and cover with

either a strainer or a lid fixed securely to the tank.

Accessories: Include the following:

- Floating outlet to draw water from the upper part of the tank.

- Tight fitting lids or screens with ≤ 1 mm mesh at all openings.

- Flap valves at every opening to the tank.

- Calmed inlet to the tank to prevent stirring sediment.

- Overflow siphon to skim surface contaminants.


JANUARY 2012

DATE

- Warranty: Provide a manufacturer’s warranty on the tanks.

Tanks and accessories for potable water

Standard: If the tank is to contain potable water, conform to AS 2070 with testing of materials to

AS/NZS 4020.

Underground tanks

General: Provide tanks designed for installation underground and to withstand the anticipated loading

from above and to prevent the entry of ground and surface water.

Separation from waste treatment installations: To AS/NZS 1547.

Connections

General: Reinforce the tank wall to resist loads imposed by the connected piping.

Outlet size:

- Tanks ≤ 6600 L: 20 mm minimum.

- Tanks > 6600 L: 25 mm minimum.

Overflow: Sized to handle not less than the maximum rate of rainwater inflow.

2.2 POLYETHYLENE TANKS

General


2.3 COATED STEEL TANKS

Roof

Type: Select from:

- Conical.

- Flat and back propped internally with a tightly fitting length of PVC-U downpipe.

Material

General: Conform to the Coated steel tanks material table.

- Top and sides: Metallic-coated steel with polymer film to AS 2070 on the inside and prepainted on the outside.

- Base: Metallic-coated steel with polymer film to AS 2070 on inside and outside.

Coated steel tanks material table

Component Minimum base metal thickness (mm)

Grade to AS 1445

Coating class to AS 1397

Profile/Pitch x no. of corrugations ≤ 3 m diameter

or ≤ 17 000 L > 3 m diameter or > 17 000 L

Base 0.6 0.8 G 300 Z 275 or AZ 150 Flat


JANUARY 2012

DATE

Component Minimum base metal thickness (mm)

Grade to AS 1445

Coating class to AS 1397

Profile/Pitch x no. of corrugations ≤ 3 m diameter

or ≤ 17 000 L > 3 m diameter or > 17 000 L

Walls 0.6 0.8 G 250 Z 600 76 x 8

AZ 200 76 x 10.5

Top 0.6 0.6 G 300 Z 275 Flat

AZ 150 Conical

Jointing

General: Conform to the recommendations of the metallic-coated steel manufacturer.

2.4 REINFORCED CONCRETE TANKS

General

Type: Precast or in situ.


Design and certification of construction: By a professional engineer.

2.5 BLADDER TANKS

General

Type: Proprietary plastic bladder type.

Material: Reinforced polymer conforming to AS 2070, resistant to puncture and microbial attack.

2.6 FIRST FLUSH DIVERTER

General

General: Provide a first flush diverter. Arrange to drain completely.

Sizing: Select for ≥ 20 L/100 m2 rainwater catchment area.

Construction: Corrosion resistant and compatible with the rainwater plumbing and tank.

Discharge: Discharge waste water from the first flush diverter either:

- If permitted by the local authority, onto grassed areas away from tank and building footings.

- To the stormwater installation.


JANUARY 2012

DATE

2.7 RAINWATER FILTRATION

Tank inlet

General: Provide an easily cleanable filter to treat rainwater prior to the entry to the tank.

Mesh size: ≤ 1 mm.

Tank outlet

Filtration and treatment: As documented.

Drinking water filters: To AS/NZS 3497 and the requirements of the statutory authorities having

jurisdiction.

2.8 PUMPS

General

General: Provide pumps as documented.

3 EXECUTION

3.1 INSTALLATION

General

General: Provide structural support to withstand the mass of the tank when full without deformation or

excessive settling.

Connecting piping: Support independently of the tank. Provide a 300 mm long section of reinforced

flexible hose to prevent piping exerting a load on the tank.

Overflow: Pipe to discharge away from the tank.

Arrangement: Prevent the entry of sunlight to the interior of the tank.

Backflow prevention

Standard: To AS/NZS 3500.1 and the requirements of the Network Utility Operator.

Requirement: Prevent backflow from the rainwater storage system to other potable water supplies.

3.2 ABOVE GROUND TANK INSTALLATION

General

Restraint: Restrain the tank to prevent movement, when empty, caused by wind and other loads.

Base: Provide a level base with gaps not exceeding 10 mm, free of sharp projections and projecting

beyond the edge of the tank at all points.


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Polyethylene tanks

Support: Trim and compact the ground and place a level bed of sand at least 50 mm thick.

Coated steel tanks

Support: Fully support the tank on a self draining timber or concrete base.

Corrosion protection:

- Prevent contact with dissimilar metals.

- Arrange so that no part of the tank is below ground level and so that adjacent ground surfaces fall away from the tank.

- Do not use sharp objects inside the tank. Remove swarf with a magnet if drilling or cutting.

Reinforced concrete tanks

Support: Trim and compact the ground.

Bladder tanks

Support: Locate on level base free from sharp objects. Install with manufacturer's supporting frame.

Relief: Provide over-pressurising relief and air vent.

3.3 UNDERGROUND TANK INSTALLATION

General

Access: Arrange to permit easy inspection, cleaning and draining.

Sealing: Prevent the entry of groundwater, surface run-off and other contaminants. Prevent entry of

stormwater surcharge via the tank overflow.

Access openings: Lockable, 150 to 450 mm diameter. Unless watertight, locate openings 150 mm above

finished surface level. Conform to occupational health and safety requirements.

External pressure: Prevent superimposed external pressure exceeding 0.25 m head of water (2.5 kPa)

above the manufacturer's maximum recommended fill level.

Excavation and backfilling

General: Keep excavations free of surface water. After placing the tank, backfill with sand.

Sand backfilling

Type: Chemically inert sand, free from foreign matter such as salt, organic matter and clay lumps, and

graded.

Placing: Place sand backfilling in layers not more than 200 mm thick.


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Ballasting

General: If ballasting is necessary to prevent flotation, fill the tank with water before backfilling and

provide a concrete ballast collar.

3.4 MARKING

General

Labelling: If rainwater is not treated to potable quality, label rainwater piping and outlets to

AS/NZS 3500.1.

3.5 COMMISSIONING

General

Cleaning: Flush the rainwater system. Wash and flush tanks to remove manufacturing and other

contaminants.

3.6 MAINTENANCE

Annual maintenance

Requirement: Provide the annual maintenance to SAA HB 230 Table 10.1 at the following times:

- If the defects liability period is less than 12 months: Within one month before the end of the end of the defects liability period.

- If the defects liability period is 12 months or longer: Annually.

4 SELECTIONS

4.1 TANK SCHEDULE

Rainwater tank schedule

Rainwater tank Rainwater tank designation

A B C

Tank material

Tank shape

Location

Net capacity (litres)

Approximate dimensions

Minimum manufacturer's warranty period (years)


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4.2 FILTER SCHEDULE

Rainwater filter schedule

Properties Filter

Outlet - nonpotable water Outlet - potable water

Documents

Hydraulic Services Quality Specification