MRWA WATER SUPPLY STANDARDS

VERSION NO.ISSUED

MELBOURNE RETAIL WATER AGENCIES

DATE:

DATE:

CHECKED:DRAWN:DESIGNED:

1 2 6 7 8 9 10 12113 4 5

H H

CWW

SEW

YVW

DATENAME APPROVED:

CWW

SEW

YVW

DATENAME

APPROVEDDATEDESCRIPTIONREV

A

1 2 63 4 5

B

C

D

A

E

F

G

1 2 6 7 8 9 10 12113 5

A

B

C

D

E

F

G

H

R. JAGGERR. JAGGER

B. VANOSC. PAXMANJ.TOMASI

R. CARRUTHERS

D. ERREYFIRST DRAFT1 CP / JT / RJ D. O'DONOVAN

01/09/1601/09/1601/09/16

01/09/1601/09/1601/09/16

01/05/16

2016

MRWA-W-300A2

SHUT OFF BLOCK DESIGNAPPERTUNANCE PLACEMENT

CWW, SEW or YVW 200m120m200m

WATERAGENCY

RESIDENTIAL COMMERCIALINDUSTRIAL

TABLE 300-C: MAXIMUM HYDRANT SPACINGS

50m

HIGH DENSITYURBAN

500m

RURAL

CFA

MFB CWWSEW or YVW 120m

120m90m

PROCESS STEP DESCRIPTIONSTEP

AB

CDE

F

J

K

TABLE 300-A: RETICULATION SHUT OFF BLOCK (SOB) DESIGN PROCESS

Identify where the distance between neighboring hydrants is excessive.Place as few additional hydrants as possible in the SOB to ensure that thedistance between hydrants is not excessive.

· additional hydrants not required for DW network where dual water.· locate adjacent to valve(s) where practical as a first priority.· ensure the distance between hydrants is approximately equi-distant

as a second priority.· all of these hydrants shall be designated "Council Owned".

Identify all SOBs containing too many property service connections.Place as few valves as possible in these SOBs to meet this requirement,locating valves:· to create SOBs of approximately equal size.· at un-valved offtakes (if present).· at high points where practicable, especially where there is a significant

elevation change in the SOB (ie: > 2m).

Valve the smaller main (if > DN100) adjacent to tapers / reducers

Valve all offtakes from > DN300 mains at the tee

KEYREFERENCESSECTION 8.2.7.2

TABLE 300-C

TABLE 300-B

Valve all offtakes from < DN280 mains at the splay.CWW & SEW do not require valves on DN100 offtakes from DN100 mains

SECTION 8.2.7.3

SECTION 8.2.7.5

Designate the ownership of these hydrants:· where a hydrant could be removed and the maximum spacing

distance still be met, this hydrant shall be marked as "Water Agencyowned".

· all other hydrants shall be marked as "Council Owned".

< DN150 25 (YVW), 40 (CWW & SEW)100N/A

WATER MAINSIZE (DN)

NUMBER OF PROPERTIESCONNECTED

TABLE 300-B: MAXIMUM SOB SIZES

750m

MAXIMUMVALVE SPACING

6

MAX NUMBERVALVES OF SOB

200-300375

300 / 500m *

1000m450

N/A1500m525 / 600

675 / 750

1150m

1900mN/A> 750 5000m #

N/AN/A

* 300 in urban areas, 500 in rural areas.# Valve spacing for larger mains shall be decided in consultation with the Water Agency.

Identify all SOBs containing a length between valves in excess of the limit.Place additional valves as required to reduce the distance to < the maximum.Identify all SOBs containing too many shut off valves.Place additional valves centrally as required to reduce the number of shut offvalves.

TABLE 300-B

TABLE 300-B

G

Place a hydrant adjacent to a valve in each SOB (typically the highest valveunless the SOB includes a dead end hydrant).Placement at the highest valve is especially important where there is asignificant rise in the SOB.(ie: >2m difference in elevation).

H

Place a hydrant at the lowest point in the SOB where the SOB has adifference in elevation >5m

NOTES Regarding FIGURE 300-A to C:1. Example is suitable for:

· DW only networks, and· NDW networks, however· For DW network of a dual water system, all hydrants installed as

part of step "L" shall not be installed.2. Colours denote unique SOB areas.3. Uncoloured lots are part of SOBs which extend off the example area

and so are incomplete.4. Letter markings next to valves and hydrants correspond to the Step ID

in Table 300-A.5. Detailed placement of hydrants (ie: offset / inline etc) shall be as per

MRWA-W-304.6. All connections within a court bowl should be counted in with

connections on the adjacent network main, (ie: where practical, courtbowl SOBs shall include some network main).

8

10

Valve just after transition to sub-mainsValve offtakes to court bowls where there are more than 10 connectionsbetween the intersection and the valve inserted as part of Step D

L

M

NDW ORDW ONLY

DW OF DUALWATER

MRWA-W-108

I Place a hydrant at the end of DN100 mains in court bowls and dead ends.Ensure fire fighting hydrant is within 60m of the furthest kerb of a dead end rd.

MRWA-W-108

Will bemostlyCouncilOwned

Will probablyall be WaterAgencyOwned

The front of every property shall be no more than the maximum hydrant spacing / 2 from the nearest hydrant.

FIGURE 300-A: SOB DESIGN EXAMPLE - RELEVANT TO CWW (RESIDENTIAL MFB AREAS)(40 lot SOB and max 120m between hydrants shown)

RESERVE

RESERVE

RESERVE

DN30

0DN

375

DN150A

A

C

B

B

B

B

B

B

D

D

D

C

D

60

59

58

57

56

55

54

53

5251

61

5049

B

B

SCALE: 1mm = 2m at A3

II & J

E

DN10

0< D

N6PE

DN100

DN10

0DN

100

DN10

0

DN100

DN10

0

D N 1 0 0

< DN63PE

< DN63PE

< DN63PE

< DN63PE

< DN6PE

DN100

DN100

DN100DN150

DN100

DN10

0

DN100

DN10

0

DN10

0

RESERVE

K

J FF

K

J

J

FJ

F

F

FI & J

F

JJ

H

L

L

L

LL

L

I & J

L

L

L

2 PUBLISHED FIRST ISSUE 1/12/16 CP / JT / RJ

FIGURE 300-C: SOB DESIGN EXAMPLE - RELEVANT TO ALL YVW RESIDENTIAL AREAS(25 lot SOB and max 200m between hydrants shown)

RESERVE

RESERVE

RESERVE

DN30

0DN

375

DN150A

A

C

B

B

B

B

B

D

D

D

C

D

60

59

58

57

56

55

54

53

5251

61

5049

B

B

SCALE: 1mm = 2m at A3

II & J

E

DN10

0< D

N6PE

DN100

DN10

0DN

100

DN10

0

DN100

DN10

0

D N 1 0 0

< DN63PE

< DN63PE

< DN63PE

< DN63PE

< DN63PE

DN100

DN100

DN100DN150

DN100

DN10

0

DN100

MRWA WATER SUPPLY STANDARDS

VERSION NO.ISSUED

MELBOURNE RETAIL WATER AGENCIES

DATE:

DATE:

CHECKED:DRAWN:DESIGNED:

1 2 6 7 8 9 10 12113 4 5

H H

CWW

SEW

YVW

DATENAME APPROVED:

CWW

SEW

YVW

DATENAME

APPROVEDDATEDESCRIPTIONREV

A

1 2 63 4 5

B

C

D

A

E

F

G

1 2 6 7 8 9 10 12113 5

A

B

C

D

E

F

G

H

R. JAGGERB. VANOS

B. VANOSC. PAXMANJ.TOMASI

R. CARRUTHERS

D. ERREYFIRST DRAFT1 CP / JT / RJ D. O'DONOVAN

01/09/1601/09/1601/09/16

01/09/1601/09/1601/09/16

01/05/16

2016

MRWA-W-300B2

SHUT OFF BLOCK DESIGN EXAMPLESAPPERTUNANCE PLACEMENT

DN10

0

DN10

0

RESERVE

L J

KF

F

FJ

K

J

J

F

FJ

L

FFFI & J

F

I & J

F

J F & HJ

I & J

FIGURE 300-B: SOB DESIGN EXAMPLE - RELEVANT TO CWW (RESIDENTIAL CFA AREAS) AND ALLSEW RESIDENTIAL AREAS (40 lot SOB and max 200m between hydrants shown)

RESERVE

RESERVE

RESERVE

DN30

0DN

375

DN150

60

59

58

57

56

55

54

53

5251

61

5049

DN10

0< D

N6PE

DN100

DN10

0DN

100

DN10

0

DN100

DN10

0

DN 1 0 0

< DN63PE

< DN63PE

< DN63PE

< DN63PE

< DN63PE

DN100

DN100

DN100DN150

DN100

DN10

0

DN100

DN10

0

DN10

0

RESERVE

A

A

C

B

B

B

B

B

D

D

D

C

D

B

B

II & J

E

K

J FF

K

J

J

FJ

F

F

FI & J

F

JJ

H

L

L

I & J

This standard should beread in conjunction with

MRWA-S-300A.

I

B BI

I

2 PUBLISHED FIRST ISSUE 1/12/16 CP / JT / RJ

K E R B L I N E

K E R B L I N E

K E R B L I N E

P R O P E R T Y L I N E

K E R B L I N E

K E R B L I N E

K E R B L I N E

VALVE OR HYDRANT

FENCE

1800±500

ROAD CL

MAIN

MAIN

MAIN

HYDRANTCATS EYE

FOOTPATH

HYDRANT PATCH

100 to 150DEVELOPEDPROPERTY

FOOTPATH

FIGURE 300-A: OPEN RESERVES OR ROADS WITHOUT KERBS

FIGURE 300-B: PAVED ROAD (ABUTTED BY URBAN PRIVATE PROPERTY)

FIGURE 300-C: PAVED ROAD (ABUTTED BY PUBLIC OPEN SPACE OR RURAL LAND)

GENERAL NOTES:1. Valves shall be marked differently according to whether they are deemed to part of a "valve cluster" as defined in Table 300-A.2. All hydrants (whether temporary, DW, NDW) require the same marking as indicated in this drawing unless the hydrant is on an irrigation only or less reliable supply.3. When temporary end of line hydrants are removed, all markings shall be removed concurrently.4. When a main is renewed or decommissioned, all redundant markings shall be completed removed.5. 40mm washouts shall be marked as valves.6. Type, location, fixture arrangements and orientation of markers to be in accordance with MRWA-W-301.7. Refer to water agency product catalogues for details of marking products.8. Locate marker posts at right angles to the main with post facing towards the valve or hydrant.9. Where there is a valve cluster of the same network (DW or NDW) only one marker post is required at the valve cluster.10. Where there is a valve cluster containing both NDW and DW valves, a single DW and a single NDW post will be required.11. The construction contractor is to install these markings.

FIGURE 300-D: TYPICAL POSITIONING OF VALVE AND HYDRANT MARKERS

DEVELOPED AREA

NDW WATER MAIN

NON-

DRIN

KING

(NDW

) WAT

ER

DRIN

KING

(W)

WAT

ER M

AIN

DRINKING (W)WATER MAIN

DEVELOPED AREARURAL AREA

RURALAREA URBAN P R O P E R T Y L I N E

LEGEND: HYDRANT MARKER POSTVALVE MARKER POSTHYDRANT MARKING CATS EYE

HYDRANT MARKING REFLECTIVE PATCHVALVE MARKING DISC

VALVE MARKER DISC (WHEN NO KERB)REFER NOTE 4.

ROAD CL

MRWA WATER SUPPLY STANDARDS

REVISION NO.ISSUED

MELBOURNE RETAIL WATER AGENCIES

DATE:

DATE:

CHECKED:DRAWN:DESIGNED:

1 2 6 7 8 9 10 12113 4 5

H H

CWW

SEWL

YVW

DATENAME APPROVED:

CWW

SEWL

YVW

DATENAME

APPROVEDDATEDESCRIPTIONREV

A

1 2 63 4 5

B

C

D

A

E

F

G

1 2 6 7 8 9 10 12113 5

A

B

C

D

E

F

G

H

MRWA-W-300NOT TO SCALE

2012 3

VALVE AND HYDRANT MARKINGARRANGEMENTS

MARKER POST(TRIANGLE AT TOP TO

POINT TOWARDSFITTING)

KERB VALVEMARKER DISC

HYDRANTCATS EYE

100 to 150KERB VALVEMARKER DISC

MARKER POST (TRIANGLEAT TOP TO POINTTOWARDS FITTING)

200±100

URBAN PROPERTY LINEPO

ST

ROAD

PAT

CH

HYDRANT NOT CLUSTEREDVALVES (PER VALVE)

OPEN RESERVES OR ROADSWITHOUT KERBS

PAVED ROAD (ABUTTED BY URBANPRIVATE PROPERTY)

PAVED ROAD (ABUTTING PUBLIC OPENSPACE OR RURAL PRIVATE PROPERTY)

Valve Cluster Definition:More than 2 valves in close proximity, ie:· 3 valves within a 6m diameter circle· 4 valves within a 8m diameter circle· 5 valves within a 10m diameter circle, etc or,· As directed by the water agency(this is irrespective of whether valves are DW or NDW)

A G E A C BRELEVANT MRWA -W-301 FIGURE

ROAD

CAT

S EY

E(B

LUE)

KERB

DIS

C

TABLE 300-A: HYDRANT & VALVE MARKING REQUIREMENTS

COVE

R /

SURR

OUND

DIS

C

CLUSTEREDVALVES

A C B

C

B

A

RELE

VANT

MRW

A-W

-300

FIG

URE

POST

POST

(1 P

OST

FOR

EACH

DW

/ND

W C

LUST

ER)

COVE

R / S

URRO

UND

DISC

(1 P

ER V

ALVE

)

COLO

URED

PAT

CH(1

PER

VAL

VE)

COLO

URED

PATC

H

C

MAIN

HYDRANTOR VALVE

HYDRANT PATCH

MAIN

HYDRANTOR VALVE

FIGURE 301-D: MARKER INSTALLATIONS EXAMPLES (PLAN VIEW)

REFERFIG 301-H

BACK

OF

KERB

FACE

OF

KERB

LIP O

F KE

RB

MARKERPOST

HYDRANT

100 to 150

1300

± 20

0 (RE

SERV

ES &

RUR

AL)

350 ±

50>5

0

>250

FIGURE 301-A: MARKER POST INSTALLATION (SECTION VIEW)

H (FOR HYDRANT) or V (FOR VALVE)POINT THE POST TRIANGLE TO THESURFACE FITTING AND ROAD

· BLACK (FOR OPERATIONALHYDRANTS)

· RED (FOR FIRE FIGHTINGHYDRANTS) or

· DARK BLUE (FOR VALVE)

REFLECTOR DISC (BLUE)

WHITE (FOR DW) orPURPLE (FOR NDW)

POST AS PER WATER AGENCYPRODUCT CATALOGUE

BOLT OR PIN

CEMENTSTABILIZEDSOIL (5%)

DISC EXAMPLE: NONDRINKING WATER

BYPASS VALVE

DISC EXAMPLE: DRINKING WATERCROSS CONNECTION VALVE

LETTER(S) VALVE TYPEDIVIDE VALVE (FOR USE IN MAINS > DN375)OFFTAKE OR RETICULATION VALVESCOUR CONTROL VALVEHYDRANT CONTROL VALVEAIR VALVE CONTROL VALVE

BYPASS VALVECROSS CONNECTION VALVEXC

BP

AVHV

SCVV

DV

WO WASHOUT

TABLE 301-C: VALVE DISC LETTERING

FIGURE 301-H: ROAD PAVEMENT HYDRANT REFLECTIVE PATCHNOTES on Figure 301-H:A. Use preformed thermoplastic road marking product,

white in colour as per AS4049.2 or as per wateragency products catalogue.A.A. Use wire brush to thoroughly clean surface

before application.A.B. Bond using gas torch until well adhered.

Apply as per manufacturers instructions.

B. Patch may be applied using vicroads approved markingpaint.

C. Point triangle to hydrant (if hydrant in road, pointtriangle towards road center).

D. Patches are not required at Acceptance of Works.E. Patches are required at End of Defects.

250 ±

20

450 ± 50

NOTES Regarding Figure 301-B:A. Colour patch to be preformed

thermoplastic road marking product as perAS4049.2.

B. The substrate shall be thoroughly cleanedor roughened and chemically treated asrequired to achieve a strong bond betweenthe marking and substrate.

C. Ensure divide line between colours isorientated correctly to indicate the size /status of the main on either side of thevalve.

FIGURE 301-G: SPINDLE CAP FOR VALVESNOTES on Figure 301-G:1. Required for normally shut valves (red)2. Required for dialysis patient valves (blue).

All dialysis shut off block valves shall be capped and havean attached waterproof label with the customer's address.

150

Ø75

PAINTED AREA

REFERFIG 301-A

REFER FIG 301-E

KERB

4.8mm OD,50mm LONG

PIN WITH KINK

CONCRETE

REFERFIG 301-F

FIGURE 301-F: CATS EYE

CATS EYEBOND

NOTES on Figure 301-E:1. Attach to ground using hotmelt marker adhesive

(bituminous) or two pack epoxy adhesive as perAS1906.3.

2. Apply as per manufacturers instructions.Roughen surface with cold chisel & use wire brushto thoroughly clean surface before application.

3. Cats eyes are not required at Acceptance of Works.4. Cats eyes are required at End of Defects.

CENT

RE O

F RO

AD

MRWA WATER SUPPLY STANDARDS

REVISION NO.ISSUED

MELBOURNE RETAIL WATER AGENCIES

DATE:

DATE:

CHECKED:DRAWN:DESIGNED:

1 2 6 7 8 9 10 12113 4 5

H H

CWW

SEWL

YVW

DATENAME APPROVED:

CWW

SEWL

YVW

DATENAME

APPROVEDDATEDESCRIPTIONREV

A

1 2 63 4 5

B

C

D

A

E

F

G

1 2 6 7 8 9 10 12113 5

A

B

C

D

E

F

G

H

MRWA-W-301NOT TO SCALE

2012 3

VALVE AND HYDRANT MARKING DETAILS(CWW and SEW ONLY)

VALVEMARKERDISC

WHITE

FOOT

PATH

200 ± 100

WATER

VALVE

1. For fastening into concrete (kerb or surround): use 316 SSconcrete pins, pre-drilled with 5mm min masonry bit.

2. For fastening to ductile iron, drill hole, tap thread and fasten withpan head M6, 25mm (1 inch) long 316 SS metal thread screws.

3. For fastening to plastic covers or surrounds, grind off plasticprotrusions in area to which disc is to be fitted, drill through coverand attach disc with 316 SS, M6, 60mm long cup head bolts &316 SS nuts and washers.

CONCRETE FASTENING PIN DETAIL

KERB FASTENING POSITION

XCW

W

BPTRAFFICABLE VALVE SURROUNDS

PLASTIC VALVE SURROUNDS

ROAD

PAV

EMEN

T

BACK

OF

KERB

FACE

OF

KERB

LIP O

F KE

RB

CENT

RE O

F RO

AD

FOOT

PATH

FACETRIANGLEPATCHTOWARDSHYDRANT

100 to 150

LIP OF KERB

CONCRETESURROUND

VALVEMARKER

DISC

WATER

VALVE

FOR LONE VALVES WHERE THERE IS A KERB

NON TRAFFICABLE VALVES IN CLUSTERS OR WHEN NO KERB

FOR TRAFFICABLE VALVES IN CLUSTERS OR WHEN NO KERB

TRAFFICABLE VALVES INNATURE STRIPS

TRAFFICABLE VALVES INPAVED AREAS (NO SURROUND)

VALVEMARKER DISC

FIGURE 301-E: VALVE MARKER DISCS

BACK

OF

KERB

FACE

OF

KERB

LIP O

F KE

RB

FOOT

PATH

VALVE WITHCOLOUREDPATCH (REFERFIG 301-B)

HYDRANT IN URBAN ROADWAYHYDRANT

VALVE IN ROADWAYABUTTING OPEN SPACE

MARKERPOST

REFER FIG301-A

200 ± 100

HYDRANT IN ROADWAYABUTTING OPEN SPACE

FIRE SERVICEOFFTAKE

NORMALLY OPENVALVE ON > DN250MAIN

NORMALLYCLOSED VALVE

DIALYSISSOB VALVE

SYSTEMCONNECTED TO< DN250 MAINPLAIN (NO COLOUR)

LILAC LID

TABLE 301-B: HYDRANT / FLUSHING BOX COLOURS

DW

NDWRED TOP

LILAC BELOW RED TOP

LEVEL

NDW

DWBELOW GROUND

BELOW GROUNDABOVE GROUND

ABOVE GROUND

CONNECTED TO>DN250 MAIN

YELLOW

12 LILAC & 12 YELLOWBLACK TOP

LILAC BELOW BLACK TOP

ROAD PAVEMENT

FIGURE 301-B: VALVE SURROUND COLOURING

ABOVE GROUND HYDRANTS TO BE MARKED AS PER FIGURE 305-C.

FV FROG MOUTH CONTROL VALVE

NOTES Regarding Fastening Arrangements:

Ø40mm andMIN 2mmTHICK 316 SS

Ø6.5mm

Lettering to bestamped oretched at least0.03mm deep

DO NOT FIT DISCS TO BLUE STONE

EXTENT OFMARKING

Where necessary, recycled water may beindicated with a separate dedicated disc.

DRINKINGWATERVALVES

NORMALLY OPEN< DN250 VALVE OFF> DN250 MAIN

NORMALLY OPENVALVE ON > DN250MAIN

NORMALLYCLOSED VALVE

NON-DRINKINGWATERVALVES

NORMALLY OPEN< DN250 VALVE OFF> DN250 MAIN

NORMALLYOPEN VALVE ON< DN250 MAIN

OTHERVALVES

NORMALLYOPEN VALVE ON< DN250 MAIN

70

Lilac (if NDW)

Plain (nocolour)

FIGURE 301-C: HYDRANT / FLUSHING BOX COLOURS

Hydrantconnected

to main< DN250

DW Hydrant onmain < DN250

DW Hydrant on /off main >DN250

NDW Hydrant onmain < DN250

NDW Hydrant onmain >DN250

70

Hydrantconnected

to main>DN250

ABOVE GROUND HYDRANTS BELOW GROUND HYDRANTS

If RectangularCover

THESE MARKINGS TO BEINSTALLED BY CONSTRUCTIONCONTRACTOR

Hydrants offset from >DN250mains or located on valve bypasspipework shall be marked Black

MRWA WATER SUPPLY STANDARDS

REVISION NO.ISSUED

MELBOURNE RETAIL WATER AGENCIES

DATE:

DATE:

CHECKED:DRAWN:DESIGNED:

1 2 6 7 8 9 10 12113 4 5

H H

CWW

SEWL

YVW

DATENAME APPROVED:

CWW

SEWL

YVW

DATENAME

APPROVEDDATEDESCRIPTIONREV

A

1 2 63 4 5

B

C

D

A

E

F

G

1 2 6 7 8 9 10 12113 5

A

B

C

D

E

F

G

H

MRWA-W-302

NOT TO SCALE

2012 3

VALVE SURFACE ARRANGEMENTSTRAFFICABLE & NON-TRAFFICABLE AREAS

R. JAGGER 04/04/2011D. TOLENTINO 04/04/2011

X C. RIVETTE 04/04/12X C.PAXMAN 04/04/12X K.DAWSON 04/04/12

X R.CARRUTHERS 04/04/12X G.REYNOLDS 04/04/12X A.COSHAM 04/04/12

1 PRE PUBLISHED DRAFT FOR COMMENT 12/07/11 R.JAGGER

2 PUBLISHED FIRST ISSUE 04/04/12 R.JAGGER

3 NEW FIGURE 302-C 1/12/16 CP / JT / RJ

FSL

DIRECTION OF TRAFFIC

HINGE

PAVEMENT

GRADE

> 400

GRADE

SV

WATER

VALVE

> 400

S.V

Valve markingsrefer MRWA-W-301

Plasticsurround

Valve markingsrefer MRWA-W-301

2 of 300 x 300 x 50Approved hardwood, recycledplastic or concrete support

Valve markingsrefer MRWA-W-301

TRAFFICABLE

5030

>50>30

Minimum covercompacted crushedrock over lip of cover

Minimum cover of naturestrip top soil

Minimum covercompacted crushedrock over lip of cover

Minimum cover of naturestrip top soil

NOTES on Valves in Nature Strips & Open Reserves:A. Where the main is aligned close to the kerb such that non trafficable covers (which are larger)

would clash with the kerb, trafficable covers shall be used (which are substantially smaller).B. Non trafficable covers shall not be cut down in size.C. Trafficable covers with concrete surrounds shall be used in nature strips where vehicles are

likely to regularly mount the kerb (Refer Figure 302-C). This includes :C.A. All valves within industrial or commercial driveways,C.B. All valves within 5m of any road intersections.C.C. All valves within 2m of residential driveways.

D. Elevate cover up to 75 above finished surface level and grade soil away to reduce waterentry into the shroud.

E. Hinge covers to close in the direction of fall of land.F. When the valve is part of a valve cluster or there is no kerb, the valve surround shall be fitted

with an identification disc. Refer MRWA-W-300 & 301 for details.

NOTES on Valves in Road Pavement:a. All surface box covers and frames to be in accordance with AS 3996: class D loading -

trafficable and the water agency product catalogue.b. Hinge covers to close in the direction of traffic.c. When the valve is part of a valve cluster or there is no kerb, the valve cover shall be

fitted with an identification disc. Refer MRWA-W-300 & 301 for details.d. No surround is required for valve covers in road pavement.

GENERAL NOTES:1. Provide a level compacted crushed rock foundation for all covers, surrounds and shrouds

(as shown) to the embedment material.Crushed rock to be in accordance with MRWA-W-201.

2. A gap is required between the cover and shroud. The shroud shall be cut at 90 degrees.The shroud shall not contact the cover & be kept > 20 mm clear.

3. Install cover, frame, spindle sleeve, shroud and shroud support so that no loading istransmitted to the valve or pipe.

4. Install an extension spindle where distance from the surface to valve spindle exceeds 350.Fix false spindle to the valve spindle using supplied grub screw where practical.

5. Refer to MRWA-W-205A for stop valve installation details.6. For non-drinking water valves, the words / letters: "non-drinking water" or "NDW" or "RW"

shall be cast / stamped/ embossed or engraved into the cover or lid.7. For drinking water valves, the words / letters: "Water" or "W" or "Drinking Water" shall be

cast / stamped/ embossed or engraved into the cover or lid.8. For valve marking arrangements refer to MRWA-W-300 & 301.9. Refer to water agency products catalogue for authorized materials.

150 / 225 DWV whitePVC SN4 pipe shroud

100 to 350

FSL

PAVEMENTValve markingsrefer MRWA-W-301

150 / 225 DWV whitePVC SN4 pipe shroud

100 to 350

FIGURE 302- A: TYPE A TRAFFICABLEVALVE SURFACE ARRANGEMENT

Concrete surround (ifrequired). Refer Note C.

150 / 225 DWV whitePVC SN4 pipe shroud

150 / 225 DWV whitePVC SN4 pipe shroud

WATER

VALVEValve markingsrefer MRWA-W-301

Valve disc marker( if required)

100 to 350

100 to 350

Shroud must beclear of surfacefitting

Shroud must beclear of surfacefitting

Shroud must beclear of surfacefitting

Valve disc marker( if required)

Valve disc marker( if required)

Compacted crushed rock asper MRWA-W-201(Type R in road pavement)(Type F in nature strip).

Compacted crushed rock as perMRWA-W-201 (Type F).

Compacted crushed rock as perMRWA-W-201 (Type F).

VALVE DISC MARKER( IF REQUIRED)

VALVE DISCMARKER ( IFREQUIRED)

WAT

ERVA

LVE

FIGURE 302- B: TYPE B TRAFFICABLE VALVE SURFACE ARRANGEMENT

FIGURE 302-D: DRINKING WATER NON TRAFFICABLEVALVE SURFACE ARRANGEMENT

FIGURE 302-E: NON-DRINKING WATER NONTRAFFICABLE VALVE SURFACE ARRANGEMENT

2 m

RESIDENTIALDRIVEWAY

5 m2 m

TRAFFICABLECOVERS REQUIREDIN THESE PARTS OFTHE NATURE STRIP

5 m

KERB

KERB

TRAFFICABLE COVERS REQUIRED IN INDUSTRIAL AREAS

KERB

FIGURE 302-C: TRAFFICABLE VALVE COVERSIN NON TRAFFICABLE AREAS

NON TRAFFICABLE

NOT FOR USE IN YARRA VALLEY WATER AREA

Compacted crushed rockas per MRWA-W-201(Type R in road pavement)(Type F in nature strip).

2 cups cementspread over surfaceof compactedcrushed rock

Plasticsurround

Shroud must beclear of surface fitting

2 cups cementspread over surfaceof compactedcrushed rock

FOOTPATH

Valve disc marker( if required)

2 of 300 x 300 x 50Approved hardwood, recycledplastic or concrete support

MRWA WATER SUPPLY STANDARDS

REVISION NO.ISSUED

MELBOURNE RETAIL WATER AGENCIES

DATE:

DATE:

CHECKED:DRAWN:DESIGNED:

1 2 6 7 8 9 10 12113 4 5

H H

CWW

SEWL

YVW

DATENAME APPROVED:

CWW

SEWL

YVW

DATENAME

APPROVEDDATEDESCRIPTIONREV

A

1 2 63 4 5

B

C

D

A

E

F

G

1 2 6 7 8 9 10 12113 5

A

B

C

D

E

F

G

H

MRWA-W-303

NOT TO SCALE

2012 3

HYDRANT & WASHOUTSURFACE ARRANGEMENTS

R. JAGGER 04/04/2011D. TOLENTINO 04/04/2011

X C. RIVETTE 04/04/12X C.PAXMAN 04/04/12X K.DAWSON 04/04/12

X R.CARRUTHERS 04/04/12X G.REYNOLDS 04/04/12X A.COSHAM 04/04/12

1 PRE PUBLISHED DRAFT FOR COMMENT 12/07/11 R.JAGGER

2 PUBLISHED FIRST ISSUE 04/04/12 R.JAGGER

3 REMOVE OLD DETAIL A. NEW FIG 303-C 1/12/16 RJ / CP / JT

FSL

BOLT AND MAIN ALIGNMENT

Hydrant head orientationunder the cover

GRADEFSLFSL GRADE

> 300

FIGURE 303-A: NON TRAFFICABLE NON-DRINKING WATER HYDRANT COVERS

FIGURE 303-B: TRAFFICABLE AREA HYDRANT COVERS

PAVEMENT

Compacted crush rockas per MRWA-W-201

(Type F trafficable area)

>50

>30

Minimum cover compactedcrushed rock over lip of cover

Minimum cover of naturestrip top soil

225 DWV white PVCSN4 pipe shroud

FIGURE 303-D: NON TRAFFICABLE COVERS FORALL IN ONE VALVE CONTROLLED HYDRANTS OR FLUSHING BOXES

100 to 250

Minimum cover ofnature strip top soil

>50

FSL

FIGURE 303- F: DRIVEWAY, PARKING BAY & FOOTPATH COVERS FORALL IN ONE VALVE CONTROLLED HYDRANTS OR FLUSHING BOXES

100 to 250

> 400

CONCRETE

Hinged heavy cover (ie:large fitzroy box)

PE non trafficableflushing box with cover &top lip removed

All in One Hydrant Controlled Valve & Flushing Box Fittings:· Covers and frames for all in one valve controlled hydrants, washouts and below ground

domestic meters can be constructed in this way.· Cover must be appropriately labeled as "hydrant" or "washout" / "flushing box" or "meter".· Only SEW allow the use of all in one valve controlled hydrants.

FSL

600 reinforced concreteor MC shaft and coverarrangement as per Fig306-C(i) from seweragestandards

100 to 250

Purple if NDW

Hydrant marking if NDWrefer MRWA-W-301

600 standard ClassD heavy cover

FIGURE 303-E: TRAFFICABLE COVER FOR ROADS FORALL IN ONE VALVE CONTROLLED HYDRANTS OR FLUSHING BOXES

100 to 250

Hydrant marking if NDWrefer MRWA-W-301

Hydrant marking ifNDW.Refer MRWA-W-01

> 100

Concrete surround. ReferNote c (if required).

NOTES on Hydrants in Nature Strips & Open Reserves:a. Where the main is aligned close to the kerb such that non trafficable covers

(which are larger) would clash with the kerb, trafficable covers shall be used(which are substantially smaller).

b. Non trafficable covers shall not be cut down in size.c. Trafficable covers with concrete surrounds shall be used in nature strips where

vehicles are likely to regularly mount the kerb (Ref Figure 303-C). This includes:c.a. All hydrants in industrial areas,c.b. All hydrants within 5m of any road intersections,c.c. All hydrants within 2m of residential driveways.

d. Elevate cover up to 75 above finished surface level and grade soil away toprevent water entry.

NOTES on Hydrants in Road Pavement:A. Hinge covers to close in the direction of the adjacent road lane traffic.B. In trafficable areas a hardwood, recycled plastic or concrete bearer is

required to support the surface fitting.C. No surround is required for trafficable hydrant covers.

PAVEMENT

PE flushingbox & lid

4 of 300 X 300 X 50Approved hardwood, recycled

plastic or concrete supports,one each side of shaft.

Shroud must be clear ofsurface fitting

Compacted Crushed Rock as perMRWA-W-201 (Type R trafficable area)

Compacted crushed rock asper MRWA-W-201 (Type Ftrafficable area)

GENERAL NOTES:1. Provide a level compacted crushed rock foundation for all covers, surrounds and shrouds (as shown) to the embedment material.

Crushed rock to be in accordance with the trafficable section of MRWA-W-201.2. A gap is required between the cover and shroud. The shroud shall be cut at 90 degrees.

The shroud shall not contact the cover & be kept > 20 mm clear.3. Install cover, surround, spindle sleeve, shroud and shroud support so that no loading is transmitted to the valve or pipe.4. For non-drinking water hydrants & washouts, the words / letters: "Non-Drinking Water" or "NDW" or "RW" shall be cast / stamped/

embossed or engraved into the cover or lid.5. For drinking water hydrants & washouts, the words / letters: "Water" or "W" or "Drinking Water" shall be cast / stamped/ embossed or

engraved into the cover or lid.6. For hydrant marking arrangements refer to MRWA-W-300 & 301.7. Refer to water agency products catalogue for authorized materials.

All in one valve controlled hydrant shown.Same arrangement for flushing boxes.

100 - 250

2 m

RESIDENTIALDRIVEWAY

5 m2 m

5 m

KERB

KERB

FIGURE 303-C: TRAFFICABLE HYDRANTCOVERS IN NON TRAFFICABLE AREAS

Hydrant marking if NDW.Refer MRWA-W-301

ROUND (IF NDW) AND SQUARE (IF DW)

ROUND (NDW) SHOWN

2 cups cementspread over surfaceof compactedcrushed rock

TRAFFICABLE HYDRANT REQUIRED IN INDUSTRIAL AREAS

KERB

TRAFFICABLECOVERS REQUIREDIN THESE PARTS OFTHE NATURE STRIP

FOOTPATH

Only SEW allow use of all inone valve controlled hydrant

Flushing box shown.Same arrangement for allin one valve controlledhydrant (SEW only) .

Flushing box shown.Same arrangement for all in one

valve controlled hydrant (SEW only).

Compacted crushed rock asper MRWA-W-201(Type R in road pavement)(Type F in nature strip).

2 of 300 x 300 x 50Approved hardwood, recycledplastic or concrete support

Compacted Crushed Rock as perMRWA-W-201 (Type R trafficable area)

FIGURE 304-ii: SECTION VIEW. TYPICAL OFFSET ARRANGEMENTS

ROAD PAVEMENT

Main connectiondetail as per FIG

305: I, J of K

Surface fittingdetail as per

FIG 305: A, D,E or F

BACK

OF

KERB

Surface fittingdetail as perFIG 305- A,B, C or D

Main connectiondetail as per FIG

305-G or H

FSL

FIGURE 304-i: SECTION VIEW.

IN LINE ARRANGEMENT

FALL

DN100

GENERAL NOTES:1. For definitions of trafficable and non-trafficable refer to MRWA-W-201.2. Require an air egress fitting between any two valves to facilitate charging of the water mains.3. Hydrants shall be located adjacent to valves wherever possible (as per Figure 205-K).

MRWA WATER SUPPLY STANDARDS

REVISION NO.ISSUED

MELBOURNE RETAIL WATER AGENCIES

DATE:

DATE:

CHECKED:DRAWN:DESIGNED:

1 2 6 7 8 9 10 12113 4 5

H H

CWW

SEWL

YVW

DATENAME APPROVED:

CWW

SEWL

YVW

DATENAME

APPROVEDDATEDESCRIPTIONREV

A

1 2 63 4 5

B

C

D

A

E

F

G

1 2 6 7 8 9 10 12113 5

A

B

C

D

E

F

G

H

MRWA-W-304

NOT TO SCALE

2012 3

HYDRANT AND AIR VALVEARRANGEMENTS

R. JAGGER 20/02/2011D. TOLENTINO 20/02/2011

X C. RIVETTE 04/04/12X C.PAXMAN 04/04/12X K.DAWSON 04/04/12

X R.CARRUTHERS 04/04/12X G.REYNOLDS 04/04/12X A.COSHAM 04/04/12

1 PRE PUBLISHED DRAFT FOR COMMENT 12/07/11 R.JAGGER

2 PUBLISHED FIRST ISSUE 04/04/12 R.JAGGER

3 CLARIFIED PREFERENCES 1/12/16 RJ / CP / JT

If FIG 304:iv.Vertical bend

If FIG 304:iiiHorizontal bend

followed byvertical bend at

end of line.

Valve requiredwhere "offtakevalve" indicated inTable 304-A.

TABLE 304-A: HYDRANT AND AIR VALVE SELECTION AND ARRANGEMENTS NOTES Regarding Table 304-A:1. Hydrants typically used alone between DN250 to <=DN375 unless the main has a significant rise or fall or the main

is pumped or has a PRV (in which case an air valve will likely be required).All air valves shall be combination (dual action) air valves.Air valves plus hydrants are typically required on mains >DN375.The designer shall undertake hydraulic and air handling analysis to confirm the optimum fitting type, size andlocation of air fittings.Air valve requirements should be determined using water agency approved air valve supplier software (and softwaresettings used by the water agency) and an appropriate surge analysis.

2. Options nominated first are preferred if practical.3. Offsetting the fitting may be impracticable if there is no space in the non trafficable area and there is no reasonable

opportunity to make enough space by altering the location of other assets.4. Locating the air valve below ground may be impracticable if:

A- the surface cannot be raised to above the 1 in 100 year flood level, orB- there is inadequate cover over the main to locate the surface fitting below ground and it is unreasonable to lower the main to accommodate the surface fitting below ground, orC- there is inadequate clearance from other buried assets and those assets cannot be reasonably moved.

5. YVW air valves must be Offset and Above Ground. If this is not possible, contact YVW.6. Locate hydrant away from areas where vehicles will likely park.

Locate hydrants >3m from kerb and in front of driveways or within 10m of an intersection.7. Above ground in line air valves are not acceptable as above ground fittings must have a valve at the offtake (in case

they get knocked over)).8. Select iii or iv according to where the surface fitting could be best located.

Require min 2m offset of above ground fitting from offtake valve.Require 800 separation of below ground air fitting and offtake valve.

9. In line hydrants connected to >DN250 trafficable mains would only be acceptable if there was no alternative.10. There is no other option than for air valves connected to trafficable mains to be offset and located in a non trafficable

location.11. For above ground air valves, they should be located as far from the road pavement as practical and in such a way

as to minimise the chance of accidental collision.

MAIN

FOOTWAY RESERVE ORMEDIAN STRIP

BACK OF KERB

FIGURE 304-iv: STANDARD OFFSET ARRANGEMENT (PLAN)

VALVE (IFREQUIRED)

FOOTWAY RESERVE ORMEDIAN STRIP

BACK OF KERB

FIGURE 304-iii: DOUBLE OFFSET ARRANGEMENT (PLAN)

ROAD PAVEMENT

FIG 305-A,D, E or F

AIR VALVEOR

HYDRANT

VALVE

For hydrants and < DN100air valves, DN100 pipework.For >DN100 air valves,DN150 pipework.

>200>200

>800

>800 (if below ground), or>2m (if above ground A.V)

>800

>DN250 MAIN

Valve requiredwhere "offtakevalve" indicated inTable 304-A.

Valve requiredwhere "offtakevalve" indicatedin Table 304-A.

FIG 305-A,D, E or F

AIR VALVEOR

HYDRANT

FIG 305-AHYDRANT (IF

WITH AIRVALVE)

>200

>800 (if below ground), or>2m (if above ground A.V & YVW)>5m (if above ground A.V & CWW or SEW)

FIG 305-AHYDRANT (IF

WITH AIRVALVE)

ROAD PAVEMENTVALVE (IFREQUIRED)

MAINMAIN

VALVE

FIG 305-A,D, E or F

AIR VALVEOR

HYDRANT

>800

DN100 pipework. Requirea DN150 to DN100 taperwhere A.V is >DN100.

>DN250 MAIN

MRWA WATER SUPPLY STANDARDS

REVISION NO.ISSUED

MELBOURNE RETAIL WATER AGENCIES

DATE:

DATE:

CHECKED:DRAWN:DESIGNED:

1 2 6 7 8 9 10 12113 4 5

H H

CWW

SEWL

YVW

DATENAME APPROVED:

CWW

SEWL

YVW

DATENAME

APPROVEDDATEDESCRIPTIONREV

A

1 2 63 4 5

B

C

D

A

E

F

G

1 2 6 7 8 9 10 12113 5

A

B

C

D

E

F

G

H

MRWA-W-304B

NOT TO SCALE

2016 2

HYDRANT AND AIR VALVEARRANGEMENT EXAMPLES

R. JAGGER 1/02/2016R. JAGGER 1/02/2016

X B. VANOS 1/10/2016X C. PAXMAN 1/10/2016X J. TOMASI 1/10/2016

X R.CARRUTHERS 1/12/2016X D. O'DONOVAN 1/12/2016X D. ERREY 1/12/2016

1 PRE PUBLISHED DRAFT FOR COMMENT 12/03/16 RJ / CP / JT

2 PUBLISHED FIRST ISSUE 01/12/16 RJ / CP / JT

FRONT BOUNDARY

KERB

< DN250 MAIN

FRONT BOUNDARY

KERB

> DN250 MAIN

FIGURE 304B-A: CWW-SEW-YVW NON TRAFFICABLEMAIN < DN250· IN LINE STANDARD HYDRANT

FIGURE 304B-B: SEW NON TRAFFICABLE HYDRANTSON MAINS >DN250IN LINE ALL IN ONE VALVED HYDRANT

FRONT BOUNDARY

KERB

> DN250 MAIN

FIGURE 304B-C: NON TRAFFICABLE MAIN >DN250· CWW or YVW- OFFSET VALVE CONTROLLED HYDRANT OR AIR VALVE· SEW- OFFSET VALVE CONTROLLED AIR VALVE· YVW AIR VALVE TO BE ABOVE GROUND· ALL OTHER FITTINGS TO BE BELOW GROUND

FRONT BOUNDARY

KERB

> DN250 MAIN

FIGURE 304B-D: CWW-SEW- YVW NON TRAFFICABLEMAIN >DN250

· IN LINE VALVED RISER PLUS AIR FITTING.· WHEN FIG 304B-C CANNOT BE INSTALLED DUE TO SITE CONSTRAINTS.· CWW or YVW IN LINE HYDRANTS or· CWW or SEW BELOW GROUND AIR VALVES.

FRONT BOUNDARY

KERB

FRONT BOUNDARY

KERB> 3m

FIGURE 304B-F: SEW TRAFFICABLE MAIN < DN250IN LINE STANDARD BELOW GROUND HYDRANT FIGURE 304B-H: CWW-YVW TRAFFICABLE MAIN < DN250

· IN LINE STANDARD BELOW GROUND HYDRANT WHERE IT ISIMPRACTICAL TO OFFSET

· LOCATE HYDRANT IN FRONT OF DRIVEWAY OR WITHIN 10m OFINTERSECTION, and

· OFFSET >3m FROM BACK OF KERB WHERE PRACTICAL.

FRONT BOUNDARY

KERB< 10m

FIGURE 304B-G: CWW-YVW TRAFFICABLE MAIN < DN250OFFSET STANDARD BELOW GROUND HYDRANT

FRONT BOUNDARY

KERB> DN250 MAIN

FIGURE 304B-J: CWW-SEW-YVW TRAFFICABLE MAIN >DN250· VALVE CONTROLLED OFFSET BELOW GROUND HYDRANT OR AIR VALVE· YVW AIR VALVE TO BE ABOVE GROUND· ALL OTHER FITTINGS TO BE BELOW GROUND

FRONT BOUNDARY

KERB

FIGURE 304B-L: CWW-SEW-YVW TRAFFICABLE MAIN > DN450· OFFSET VALVE CONTROLLED AIR VALVE PLUS HYDRANT· YVW AIR VALVE TO BE ABOVE GROUND· ALL OTHER FITTINGS TO BE BELOW GROUND

HYDRANT (FIG 305-A)

HYDRANT OR AIR VALVE (FIG 305-A, D, E or F)

ALL IN ONE VALVED HYDRANT (FIG 305-B)

VALVED RISER PLUS HYDRANT OR AIR VALVE (FIG 305-C or D)

FRONT BOUNDARY

KERB

FIGURE 304B-M: CWW-SEW-YVW DIVIDE VALVE ONMAIN > DN450· OFFSET BYPASS WITH HYDRANT AND AIR VALVE.· AIR VALVE LIKELY REQUIRED WHERE THIS IS AT A DISTINCT

HIGH POINT

AIR VALVE (FIG 305-D, E or F)

LEGEND

<DN2

50 M

AIN

Locate valves andhydrants in the naturestrip as close to the

splay corner as practical

Underground fittingsmay be single offset

where practical.

Above ground fittingsshall be double offset

where practical.

> DN450 MAIN > DN450 MAIN

NOTE: ALWAYS LOCATENATURE STRIP VALVESAND HYDRANTS ASCLOSE AS PRACTICAL TOTHE SPLAY CORNER

TRAFFICABLE MAINS < DN250 NON TRAFFICABLE

< DN250 MAIN < DN250 MAIN< DN250 MAIN

TRAFFICABLE MAINS >DN250

FRONT BOUNDARY

KERB> 3m

> DN250 MAIN

FIGURE 304B-K: CWW-SEW-YVW TRAFFICABLE MAIN >DN250· in line below ground valved hydrants or air valves where it is impractical to offset· locate hydrant or air valve in front of driveway or within 10m of intersection, and· offset main >3m from back of kerb.

< 10mSEW Shown CWW / YVW Shown

NONTRAFFICABLEAREA

ROAD PAVEMENT

> DN250 MAIN

FIGURE 304B-I: CWW-SEW ABOVE GROUND AIR VALVES· WHERE BELOW GROUND AIR VALVE IMPRACTICABLE.· LOCATE ABOVE GROUND AIR VALVES IN NON TRAFFICABLE

AREAS > 5m FROM ROAD PAVEMENT.· MAIN MAY BE LOCATED IN A NON TRAFFICABLE OR TRAFFICABLE

AREA.

> 5m> DN450 MAIN

> DN250 MAIN> DN450 MAIN

FRONT BOUNDARY

KERB

> DN450 MAIN

FIGURE 304B-E: NON TRAFFICABLE MAIN > DN450· OFFSET VALVE CONTROLLED AIR VALVE + HYDRANT· YVW AIR VALVE SHALL BE ABOVE GROUND· CWW - SEW AIR VALVE SHALL BE BELOW GROUND

KERB

FSL

Di riser length tosuitDN

100

· This is the standard for retic pipelines.· Only spring hydrants permitted.

· Trafficable or non-trafficable.· Refer to MRWA-W-303 for details.

· Only for SEW for mains >DN250· Non-trafficable where practical.· Not to be offset from main.

· Only spring hydrants permitted.· Refer to MRWA-W-303 for

details.

FSL

FSL

FIGURE 305-D: BELOW GROUND AIR VALVE WITH ISOLATION VALVE1. Only for CWW & SEW air valves in non trafficable areas where the air valve is short and

would not protrude above ground.2. Not preferred by YVW.3. Approved polymeric or concrete shaft may be used as per gravity sewerage standards.4. 40mm diameter holes to be cut into cover (or use grated cover) equal in area to 1.5 x the

air valve orifice area.The cover, once holed, is no longer capable of withstanding the traffic loads.

5. Cover should lie 25mm above the surrounding natural surface level (not to protrudeexcessively above ground).Surface level shall be above the 1 in 100 year flood level.

6. Valve not required at the offtake where the in line arrangement is used.

FIGURE 305-F: ABOVE GROUND SMALL AIRVALVES1. Use where not SEW and:

1.1. The required air valve is small enough to fit within thecover, and

1.2. For YVW air valves, or1.3. For CWW air valves when the air valve is well back from

the road (ie: >5m).2. 40mm diameter holes to be drilled into cover equivalent in

area to at least 1.5 x the air valve orifice area.

d

h

D

FIGURE 305-G: STANDARD INLINE CONNECTION

FIGURE 305-I: OFFSET HYDRANTCONNECTION TO MAINS < DN150· Only for use in conjunction with Figure 305-A.· A valve is usually not fitted between the

hydrant / air valve and the offtake tee.

FIGURE 305-J: INVERTED SCOUR TEECONNECTION FOR MAINS > DN225· Only for use in conjunction with Figures 305-A,

D, E or F.· Fit valve directly to the offtake tee.

FIGURE 305-H: IN LINE AIR VALVECONNECTION TO MAINS > DN375· Only for use in conjunction with Figure

305-D.· Only possible where the water main is

unusually deep (> 1300mm) &/or an aboveground air valve is to be constructed.

· 'd' and 'h' should be > 0.5 x 'D'

AIR VALVE DETAILS

d

h

D

FIGURE 305-K: OFFSET AIR VALVE CONNECTION TO MAINS > DN375· Only for use in conjunction with Figures 305-D, E or F.· Only usually possible where the water main is unusually deep (> 1300mm) &/or an above

ground air valve is to be constructed.· 'd' and 'h' should be > 0.5 x 'D'· Place special flanged bend directly on tee to initiate a horizontal alignment.

HYDRANT SURFACE DETAILS

600 CLASS D COVER (if 600 shaft)750 CLASS D COVER (if 1070 shaft)

Connect to nearbydrain if practical

NOTES Regarding Air Valves:1. All options posed here are non trafficable.

Air valves shall not be located in trafficable locations.2. Air valve and riser pipe (from main) should be sized

according to the orifice cross sectional area(s), not thebore area of the air valve.

3. Where an air valve > DN200 is calculated as required,multiple smaller valves shall be installed on a manifoldinstead (ie. 2 x DN200 should be used instead of a singleDN300) and the shaft designed accordingly.

4. Air valve marking arrangements only required where Ltype hydrant covers are used.

NOTES on Figures 305-A, B & C:1. Refer to MRWA-W-303 for surface

cover arrangements for hydrants.2. Refer Table 301-B for hydrant marking

arrangements.3. Hydrants are not to be used in low

pressure applications (< 20 m),eg: some irrigation only NDW systems.

4. Spring hydrants are not automatic andrequire manual opening to allow airingress and egress.

DN10

0

MRWA WATER SUPPLY STANDARDS

REVISION NO.ISSUED

MELBOURNE RETAIL WATER AGENCIES

DATE:

DATE:

CHECKED:DRAWN:DESIGNED:

1 2 6 7 8 9 10 12113 4 5

H H

CWW

SEWL

YVW

DATENAME APPROVED:

CWW

SEWL

YVW

DATENAME

APPROVEDDATEDESCRIPTIONREV

A

1 2 63 4 5

B

C

D

A

E

F

G

1 2 6 7 8 9 10 12113 5

A

B

C

D

E

F

G

H

MRWA-W-305NOT TO SCALE

2012 3

HYDRANT AND AIR VALVEFITTING DETAILS

100 to 250

OFFSET

IN LINEIN LINE ONLY

IN LINE OROFFSET

Concretesurround

OFFSET ONLY

20mm bleedwith 316 ssball valve

FSL

Ball or butterfly valve.Required only if in linemain connection.

5mm thick aluminum checker plate lid withstiffening spacers

100 to 250

OFFSET ONLY

20mm bleedwith 316 ss

ball valve

1. Isolation valve must be operable from surface if 600Ø shaft is used to house the air valve.2. Approved 600Ø sewer maintenance shaft and cover preferred for air valves less than 300Ø.3. Approved 1070Ø sewer access shaft shall be used for air valves greater than 300 in width.

600 neck shall be located over clear ground (not over the air valve).

4. Minimise pit depth, step irons required for 1070Ø shaft > 1000 deep.5. Lay shaft and supports on compacted 20mm single sized crushed rock (self draining) to 95%

rd density.This crushed rock should extent to the embedment layer, extend the full width of the trenchand to a distance of 1m from fitting in both directions.

> 300 & > 13SHAFT HEIGHT

MAIN CONNECTION DETAILS

FIGURE 305-E: ABOVE GROUND LARGER AIR VALVES1. Use only concrete shaft.2. Use sufficient 316SS fastened or welded aluminum stiffening angle to support cover to

ensure <10mm deflection with a centered 100 kg load.3. Locate shaft well back from roadway (ie: >5m) if CWW or SEW.

Loose locatingbrackets at 10 and 2

o'clock

NOTES Regarding Details D & E:

PERSPECTIVE VIEW OF TOP OF SHAFT ARRANGEMENT

6mm thick, 60mm wide316ss strap

M12, 316ss bolts

PADLOCK

Install markings as perMRWA-W-301

Install markings as perMRWA-W-301

70

Black

Lilac (if NDW)

Compacted 20mmsingle sized

crushed rock

FSL

Standard 600 shaft(concrete or PP).

If PP, install as perFig 306C(i) from

sewerage standards

600 CLASS B/D COVER

APPROVED BALL ORBUTTERFLY VALVE

IN LINE ONLY

1. Use for CWW or YVW where:· Main is >DN250 .· An offset hydrant would normally be required but this requirement cannot

practically be accommodated due to site constraints, ie: other assets too close.2. Non-trafficable where practical.

3. Only use spring hydrants.4. All such hydrants are to be Water Agency owned and not included as part of fire

fighting spacing (as cannot be accessed by fire fighters).5. Approved polymeric (non-trafficable) or concrete (trafficable) shaft may be used.

FIGURE 305-C: BELOW GROUND IN LINE HYDRANT WITH ISOLATION VALVE

Install markings as perMRWA-W-301

100 to 250

FIGURE 305-A: BELOW GROUND HYDRANT FIGURE 305-B: BELOW GROUND ALL IN 1 VALVED HYDRANT

Only for use in conjunction with Figures305-A, B, C or D.

500 to1000

FSL shall be above the 1in 100 year flood level

Compacted crushed rock asper MRWA-W-201 (Type F)

SPACER

Standard 600 or 1070 shaft(concrete or PP).If 600PP, install as per Fig306C(i) from seweragestandards

<600 ifPractical

>100 >300<600 if

Practical

>100 >300

<600 ifPractical

>100 >300

300 x 300 x 50 (4 No.) approvedrecycled plastic or concrete support

300 x 300 x 50 (4 No.) approvedrecycled plastic or concrete support

2 cups cementspread oversurface

Compacted crushed rock asper MRWA-W-201 (Type F)

Compacted crushed rock as perMRWA-W-201 (Type F / R)

MRWA WATER SUPPLY STANDARDS

REVISION NO.ISSUED

MELBOURNE RETAIL WATER AGENCIES

DATE:

DATE:

CHECKED:DRAWN:DESIGNED:

1 2 6 7 8 9 10 12113 4 5

H H

CWW

SEWL

YVW

DATENAME APPROVED:

CWW

SEWL

YVW

DATENAME

APPROVEDDATEDESCRIPTIONREV

A

1 2 63 4 5

B

C

D

A

E

F

G

1 2 6 7 8 9 10 12113 5

A

B

C

D

E

F

G

H

MRWA-W-306ANOT TO SCALE

2012 3

FLANGE ARRANGEMENTS

Fill gap between raised flange faceswith primer or mastic

FBEcoatedflange

Gasket

SS bolt, nut& washers

SS backingring

PRIMER

ACCEPTABLEPIPE COATING

GASKET

FIGURE 306A-A: CORROSION PROTECTION OF 2 x DI or 2 x MS UNCOATED FLANGES

GENERAL NOTES:A. All flanges are to be raised face type.B. Steel flanges shall be welded in an ISO9001 accredited workshop.

No on site welding of steel flanges is permitted.C. For flange, gasket and fastening details, refer to MRWA-W-306B.D. Corrosion protection is not required for concrete encased puddle

flanges.E. Any FBE coated fittings which are damaged to the point where bare

metal is exposed shall be repaired with a repair product approved by themanufacturer.Otherwise it shall be quarantined and not installed.

Overlap primerover pipe coating

by min 200

UNCOATED MSCL OR DI FLANGE

FBE COATED DI FITTING

Fill gap between raised flangefaces with primer or mastic

MASTICFILLER

CEMENT MORTAR REINSTATEMENT

FIGURE 306A-B: CORROSION PROTECTION OF AN UNCOATED FLANGE CONNECTED TO A COATED FITTING

Overlap primer overpipe coating by min

200

PRIMEROverlap protectivetape over primer

by min 150

Insulation top hat(if required- seenote B)

WASHER

2 x MS, or2 x DIflanges

WASHER

NOTES on Corrosion Protection:A. Embedment shall be scalloped under the flanges to enable tape to be wound underneath.B. Insert nylon or acetyl copolymer thermoplastic based insulation top hats with fasteners into all flange holes when

mating flange materials are dissimilar, ie: if both flanges are DI or both flanges are steel, no fastener insulation isrequired.Where flange insulation is required, test flange insulation in accordance with CORR-24.

C. FBE coated flange holes shall not be drilled out to make them larger for top hat insertion.Greater than 0.5mm thick sleeving and insulating washers or top hats thin enough to be inserted into flange holesshall be used. This is usually required for M16 & M24 bolt holes.

D. Corrosion protection described here is required for all steel or ductile iron flange surfaces which do not have a highintegrity coating consisting of one of the following:

D.A. Heat applied MDPE PE coating to AS4321.D.B. Fusion bonded epoxy coating to AS/NZS 4158.

D.C. Ductile iron pipe with zinc coating to 200 mg/m² to BS/EN 545.D.D. Ductile iron pipe with polyurethane coating to EN 545 or ISO 2531.

E. Bare, bitumen coated or painted surfaces are not acceptable coatings. These surfaces will be referred to as uncoated.F. All corrosion protection products shall be as per the water agency product catalogue.G. Products from a single manufacturer shall be used to ensure compatibility of products. All products shall be applied as

per the manufacturers instructions.H. Step 1: Surface Preparation- All surfaces to be primed shall be prepared to a finish of ST2.5 according to AS 1627.2

class SA2.5.Power wire brush remove all scale, loose rust and old flaking coating. Chisel off all weld splatter and slag.

I. Step 2: Primer- Shall be applied by brush or spray to all uncoated surfaces to a distance of 200mm past coated pipe /fittings. The entire area to be wrapped shall be primed, including all flanges and bolts.

J. Step 3: Mastic- Apply mastic to create a gradual and smooth transition from the pipe to the outer diameter of theflange. Application around bolt heads only is not acceptable. Apply mastic by hand, ensuring no significant voids arepresent.

K. Step 4: Protective Tape- Apply petrolatum, butyl or bitumen tape system continuously with 55% overlap, stretchingand moulding the tape to limit creases and prevent gaps.

L. Step 5: Overwrapping Plastic Tape- Provide physical and mechanical protection of the corrosion protective tape usinga PVC overwrapping tape. Apply with 55% overlap, stretching tape to limit creases and prevent gaps.Where DI pipe and fittings are PE sleeved (after step 4), over wrapping tape is not required.

M. Step 6: Coating Defect (holiday)Testing. Carry out holiday testing to determine the quality of coatings as per note J ofdrawing MRWA-W-400.

Corrosion protectiontape

MASTICFILLER

1. The PE puddle flange shall conform to the dimensions described in in Table 306A-A.2. Puddle flanges cast as part of a thrust fitting (thrust connectors) or welded on puddle flanges are preferred to bolted on

mechanical puddle flanges and shall be used where practicable.3. PE puddle flanges shall be extrusion welded to PE mains.4. Extrusion welding shall be undertaken in a clean and dry workshop.5. The extrusion welder shall be qualified to the competency PMBWELD309 or PMBWELD309A or PMBWELD309B.6. All welds shall be stamped with the welder's name or identification number.

FIGURE 306A-D: CORROSION PROTECTION FOR GALVANISED BOLTS WITH COATED FLANGES

PEstubflange

NOTES Regarding Galvanised Fastener Protection & Corrosive Ground Conditions:· Caps and sleeving as shown above are not required where Figure 306A-A or B apply.· Stainless steel fasteners in corrosive ground (ie: chlorides > 1000 ppm) shall be protected as shown in Figure 306A-D.· CWW does not accept the use of buried galvanised steel fasteners.· Either approved mastic or gel plus plastic caps may be used to encapsulate the galvanised fasteners.

Over wrappingtape

MASTICFILLER

MASTICFILLER

Overlap protective tape overprimer by min 150

Corrosion protectiontape

OVER WRAPPINGTAPE

2 x MS, or2 x DIflanges

Anticorrosion gelor mastic

Plastic sealing cap(optional)

PVC heavy duty"duct tape"

Double thickness of lowdensity PE sleeve

MASTIC

5 mm

NOTES Regarding Fused PE Puddle Flanges:

GASKET

FIGURE 306A-C: PE STUB FLANGE WITH SS FASTENERS

Fbe coated difittings

Choose one of Masticor Cap plus mastic / gel

PVC heavyduty "ducttape"

NOTES Regarding Sleeving:A. All Fasteners (gal or SS) shall be sleeve wrapped to prevent contact with soil.B. Gal fasteners in the open air (not buried) do not require additional corrosion protection.C. Triple wind PVC heavy duty "duct tape" to be min 0.18mm thick and 50mm in diameter around the sleeve to prevent

water / air ingress under the sleeve.D. Use low density polyethylene sleeve in accordance with AS 3680. Wrap so that any seem is located at top of the pipe.E. Ensure that all sleeving between the duct tape on one side and that on the other is not perforated in any way.F. Ensure flanges and bolts are clean and free of dirt of contaminants prior to being sleeved.

PIPE PE MAIN OUTSIDE DIAMETER< DN280> DN315

FLANGE THICKNESS (mm)3040FLANGE OD (mm)

< DN500> DN560

PIPE OD +100PIPE OD + (2 x PIPE WALL THICKNESS)

TABLE 306A-A: PE PUDDLE FLANGE DIMENSIONS FOR PE MAINS

PE pipe

FIGURE 306A-E: PE PUDDLE FLANGES

Puddle Flange Thickness

Puddle FlangeOutside Diameter

Extrusion Weld (fullcircumference on both sides)

PIPE PE MAIN OUTSIDE DIAMETER

MRWA WATER SUPPLY STANDARDS

REVISION NO.ISSUED

MELBOURNE RETAIL WATER AGENCIES

DATE:

DATE:

CHECKED:DRAWN:DESIGNED:

1 2 6 7 8 9 10 12113 4 5

H H

CWW

SEWL

YVW

DATENAME APPROVED:

CWW

SEWL

YVW

DATENAME

APPROVEDDATEDESCRIPTIONREV

A

1 2 63 4 5

B

C

D

A

E

F

G

1 2 6 7 8 9 10 12113 5

A

B

C

D

E

F

G

H

MRWA-W-306B

NOT TO SCALE

2012 3

FLANGE DETAILS ANDFLANGE FASTENING REQUIREMENTS

K. DAWSON 11/03/2011R. JAGGER 11/03/2011

X R.JAGGER 04/04/12X C.PAXMAN 04/04/12X S. TAN 04/04/12

X R.CARRUTHERS 04/04/12X G.REYNOLDS 04/04/12X A.COSHAM 04/04/12

1 PRE PUBLISHED DRAFT FOR COMMENT 12/07/11 K.DAWSON

2 PUBLISHED FIRST ISSUE 04/04/12 K.DAWSON

3 PE PUDDLE FLANGES. TORQUE AMENDMENTS 01/12/16 RJ / CP / JT

PIPE NOMINAL SIZEFLANGE OUTSIDE DIAMETERPITCH CIRCLE DIAMETERGASKET INTERNAL DIAMETERNUMBER OF HOLES / BOLTSDIAMETER OF HOLESBOLT SIZELENGTH OF BOLTS (mm)BOLT TENSION (kN)TORQUE (LIGHTLY OILED GAL)- NmTORQUE (WELL LUBRICATED)TORQUE (PTFE or INSULATED)- NmDI FLANGE THICKNESS (mm)STEEL FLANGE THICKNESS (mm)

100215178108418M1675207050402011

150280235161818M1675207050402311

225370324241818M1675259060502415

3004554063251222M2010035160110803023

3755504954061226M24100502701801453330

4506405844851226M24120552902001603330

6008257566411630M27130704202902304248

7509959277962033M30130805303802904748

TABLE 306B- A: CLASS 16 (PN16) FLANGE & FASTENING DATA

NOTES Regarding Gasket and Fastener Material Requirements:a. CWW only permits 316 stainless steel fasteners in buried applications.

Galvanized fasteners are allowed where the fasteners are exposed to the open air rather than soil.b. Class 16 flange gaskets shall be full face, solid 3mm thick EPDM rubber (seal-16).c. Class 16 galvanised steel studs (bolts), nuts and washers shall be grade 4.6.d. Class 16 stainless steel studs (bolts), nuts (ptfe coated) and washers shall be 316 stainless steel (A4), class 50.e. Class 35 flange gaskets shall be full face, 1.5mm thick compressed fibre, Teadit style na1000, which contains Aramid fibres, woven wire mesh

reinforcement, a nitre rubber matrix and graphited surface on both sides.f. Class 35 galvanised steel studs (bolts), nuts and washers shall be grade 8.8.g. Class 35 stainless steel studs (bolts), nuts (ptfe coated) and washers shall be 316 stainless steel (A4), class 70 .h. Flange gaskets shall conform to WSAA industry standard WSA 109, which includes compliance to AS4020 for potable water contact.i. All stainless steel fasteners shall include the use of PTFE (teflon) or Molybdenum Sulphide (MoS

2) coated nuts to reduce seizing, galling and thetightening friction of the nut on the washer (thus reducing the tightening torque required).

NOTES on Tables 306B- A & B:A. The flange and fastening details provided in these tables are based on AS/NZS 4087:2011 and WSAA standard WSA 109-2011.

In AS/NZS 4087, figure B5 covers PN16 and figure B6 covers PN35.B. All flanges shall be raised face type.C. "lightly oiled" refers to the application of a good quality lubricating oil and is the usual as received condition of fasteners.

A torque K factor of 0.22 has been used to calculate the torque values in Tables 306B- A & B in this case.D. "well lubricated" refers to the application of molybdenum disulfide grease, or equivalent antiseize compound, eg: nickel graphite lubricant such as loctite 771.

A torque K factor of 0.15 has been used to calculate the torque values in tables 1 & 2 in this case.Unless proven to be otherwise, assume grey coated nuts fall under "well lubricated".

E. "PTFE / Insulated" refers to the application of a PTFE coating or the use of insulating polymeric top hats or washers / with well lubricated fasteners.A torque K factor of 0.12 has been used to calculate the torque values in tables 1 & 2 in this case.

F. Torques quoted are minimums.Maximum torque allowable shall be 1.5 x the minimum.

G. The bolt lengths described assume Di to Di flanges. Insulated flanges may require longer bolts.H. The nominated gasket internal diameter is the inside diameter of flange class ductile iron pipe, excluding the cement lining.

While PN35 class Di pipe has a larger ID than flange class, the nominated gasket inside diameters are larger than pipe cement lining inside diameters (ie:the gasket will not protrude into water flow of any Di pipe).

PIPE NOMINAL SIZEFLANGE OUTSIDE DIAMETERPITCH CIRCLE DIAMETERGASKET INTERNAL DIAMETERNUMBER OF HOLES / BOLTSDIAMETER OF HOLESBOLT SIZELENGTH OF BOLTS (mm)BOLT TENSION (kN)TORQUE (LIGHTLY OILED GAL)- NmTORQUE (WELL LUBRICATED)TORQUE (PTFE or INSULATED)- NmDI FLANGE THICKNESS (mm)STEEL FLANGE THICKNESS (mm)

100230191108818M169050180120962224

1503052601611222M2090803502401902731

2254053562411226M241201156104203303438

3004904383251626M241201156104203303838

3755805214061626M241301509006104304248

4506756104852033M3015018011908105204658

6008507816412436M33180230167011407455468

75010159407962836M331802301670114083059-

TABLE 306B- B: CLASS 35 (PN35) FLANGE & FASTENING DATA

112

5

3

79 2

11

4

810

6

1

5

3

7 2

6

8

41

3 2

4

4 BOLTS 8 BOLTS 12 BOLTS

112 5

37

9

211

4

8

106

16 BOLTS

13

14

15

16

GENERAL NOTES:· Where test pressures are < 1600 kPa, class 16 flanges and gaskets are typically screwed onto flange class pipe (which is typically thicker than

class 35 ductile iron pipe).· Where there are more than 16 bolts, the same principle as applied in the 16 bolt flange pattern should be utilised.

NOTES Regarding Mechanical Flange Attachment:· Mechanical puddle flanges shall not be applied to PVC pipe.· Clean mechanical puddle flanges (ie: bolted) fixed to metallic pipe shall be fitted to a clean pipe with

a 2 pack epoxy resin liberally applied to the pipe and puddle flange mating surfaces.· Install as per manufacturer's instructions. Where fastening torque is not specified:· Firmly fasten the puddle flange bolts to a torque equivalent to that specified for lightly oiled

galvanised flange bolts in Table 306B-A (PN16) or Table 306B- B (PN35).

Flanged Joint Installation Guidelines:1. Do not allowed gasket materials to be exposed to temperatures above 50 deg C or exposed to

contaminants.2. Thoroughly clean the flange faces to be jointed, ensuring there is no dirt, particles of foreign matter,

protrusions or coating build-up on the mating surfaces.Use a scraper or wire brush to remove any irregularities.

3. Ensure that the mating threads of all nuts and bolts are clean and in good condition.4. If galvanised fasteners are to be used, evenly apply a suitable lubricant (eg: molybdenum sulphide)

to all mating threads, including the nut load bearing face.5. Align the flanges to be joined and ensure that the components are satisfactorily supported to avoid

bending stress on the flanged joint during and after assembly.6. Insert four bolts i(with insulators if required) In locations 1 to 4 as indicated in Figure 306B- A,

positioning the gasket in between the flange mating faces.Take care not to damage the gasket surfaces.

7. Tighten the nuts to finger tight and check the alignment of the flange faces and gasket.8. Insert the remaining bolts (with insulators if required) and tighten nuts to finger tight.9. Determine the correct tightening torque from the above tables.10. Tighten nuts to 30% of this torque using the star pattern detailed in the figure below.10. Tighten nuts to 60% of this torque using the star pattern detailed in the figure below.10. Tighten nuts to 100% of this torque using the star pattern detailed in the figure below.11. Finish with one final pass, torquing in a clockwise direction.12. Re-torque fasteners 30 minutes after the initial tightening sequence (to cater for relaxation of the

gasket).13. If galvanised fasteners are to be used, apply corrosion protection measures as detailed in

MRWA-W-306A.Torque wrenches used must provide torques to an accuracy of + - 25%, which is typical.In critical applications where torques are substantial (ie: > 200 nm), a more accurate hydraulic tensionershall be used.

NOM DIFITTING SIZE100150225

300 #375450

PE STUBSIZE125180225

315SPECIAL ORDER STUB FLANGE + BACKING RING + ADAPTOR REQUIRED450

OD215280

455

640

PCD178235

406

584

PEADAPTOR

NOT REQUIRED225 to 280, or 225 to 315

315 to 355, or 315 to 400

PE EQUIVALENTDNPE SIZE(S) ^125180280 or 315

355 or 400400 or 500560 or 630

TABLE 306B-C: PE MAIN CONNECTION TO CLASS 16 FLANGES (PN16)

450 to 560, or 450 to 630

SPECIAL ORDER

NOT REQUIRED

PE BACKING RINGSIZE110180

315

450

ID128195

345

480

FLANGE

250 * 280 405 356 NOT REQUIRED N/A280 300

Notes Regarding Table 306B-C:^ Equivalent size means that these sizes have the most similar hydraulic capacity.* Flange size 250 is included to enable DN280 PE mains to directly connect to DN250 valves / hydrant tees etc (ie: no adaptor would

be required). Socket spigot mains shall not be constructed in DN250 size.# If preferred, DN315PE pipe may directly connect to a DN300 valve for convenience (no adaptor would be required), although the

valve in this case would be larger than required. Refer to Figure 306B- B.· all PE adaptors shall be moulded fittings and butt weld fused to pipes / stubs.

370 324

DN300VALVE 325 256

DN315PE STUBFLANGE,BACKING RINGAND PIPE

315DN225 VALVE 241 205

DN225PE STUB FLANGE

225

UNLESS PROVEN TO BE OTHERWISE, ASSUME GREY COATED NUTS FALL UNDER "WELL LUBRICATED".TORQUES QUOTED ARE MINIMUMS. MAXIMUM TORQUE ALLOWABLE SHALL BE 1.5 x THE MINIMUM.

Apply torque according to the size of thevalve flange (Refer Tables 306B-A & B)

FIGURE 306B- A: BOLT TIGHTENING SEQUENCE

DN315PE TODN225PEREDUCER

315 DN315PEPIPE

SPECIAL ORDER BACKING RING

FIGURE 306B-C: ALTERNATIVE DN315PE VALVE ARRANGEMENTS

FIGURE 306B-B: MECHANICAL PUDDLE FLANGE CONNECTION

Ductile iron orPE pipe

Bolted on mechanicalpuddle flange

FSL

DISCHARGE PIPE ON FALLING GRADE

2 to 5m FROM OUTLET STRUCTURE

FIGURE 307-C: DISCHARGE TO WETLANDS OR WATERWAYS

FIGURE 307-A: SCOUR CONNECTION

GENERAL NOTES:A. Scour valve and pipework to provide required main drainage time (refer table 8.3 of WSA 03- MRWA edition).B. Discharge to drains and water ways is preferred for drinking water.C. Discharge to a pit or tanker connection point is required for non drinking water. Locate discharge pits nearby > DN300 sewerage main maintenance structures if practical.D. Downstream valves at the end of the scour line are only required when the discharge cannot be seen or heard at the distribution main's offtake valve which is typically

when the drain, pit or waterway is more than 20m away. For tanker connection points, the butterfly valve below the connection coupling provides satisfactory dischargecontrol.

E. Unreinforced concrete to be N20 and reinforced concrete N25.F. Connections into drains shall be undertaken as per the requirements of the relevant drainage authority.G. Discharge to wetlands, creeks and drains only permitted for drinking water and treated storm water.H. Scours are typically sized as per bypass valves, although drainage time and scour flow velocity should also be taken into account (refer to Table 105-A for details).

GATE VALVE

Valve surface arrangementsas per MRWA-W-302

NOTES Regarding Discharge Pits:1. To be used on NDW mains only. Locate nearby > DN300 sewerage main maintenance structures if practical.2. Pump out pits may only be used on DW mains in cases where there the water main is constructed ahead of drainage.

DW Pump out pits shall be decommissioned and replaced with properly constructed drainage system scour connections when drainagebecomes available.

3. Use minimum 1050 manhole design. Consider larger manholes for larger mains.4. Construct pit in accordance with WSA 02- cast in situ manholes.5. Designers must produce a feasible scour water removal plan and adjust the scour pit design to suit.

The plan should take into account: the grade of the main, the volume of water in the main, the volume of the pit, the feasibility of pumping pitcontents to a sewer, or the number of eductor truck loads required to empty the main.

6. Pit storage shall be no less than 150 of the water main shutoff volume being removed unless the pit is within 50m of a nearby > DN300 sewer.7. Water main shutoff volume must be < 300m³.

FIGURE 307-B: DISCHARGE PIT DETAIL

Non-returnflap

> 150

Design and construct pit asa Maintenance Hole inaccordance with MRWASewerage standards

FSL

>

DN300 MAINS

FSL

MRWA WATER SUPPLY STANDARDS

REVISION NO.ISSUED

MELBOURNE RETAIL WATER AGENCIES

DATE:

DATE:

CHECKED:DRAWN:DESIGNED:

1 2 6 7 8 9 10 12113 4 5

H H

CWW

SEWL

YVW

DATENAME APPROVED:

CWW

SEWL

YVW

DATENAME

APPROVEDDATEDESCRIPTIONREV

A

1 2 63 4 5

B

C

D

A

E

F

G

1 2 6 7 8 9 10 12113 5

A

B

C

D

E

F

G

H

MRWA-W-307NOT TO SCALE

2012 3

SCOUR ARRANGEMENTS FOR

Spindle extension tosurface arrangementas per MRWA-W-302

> 2m

Valve surface detailsas per MRWA-W-302

Valve surface details(refer MRWA-W-302)

FSL

50 to 150

20mm bleedwith 316 SSball valve

Ball or butterflydischarge controlvalve.

4 of 300 x 300 x 50Approved hardwood, recycledplastic or concrete support

FIGURE 307-D: TANKER CONNECTION POINT

Hole in handle toenable connection

of operating rod

Downstream manualdischarge control valve(if required. Ref note D)

1. This arrangement is an alternative to Figure 307-B.It is preferred when the scour water removal plan indicates a single tanker truckcould empty the isolated section of main with in the required time (refer to table 8.3of WSA03).

2. Locate the pit in a non trafficable location if possible.3. Cover shall be Class D and the shaft shall be reinforced concrete if the pit is

located in a trafficable location.4. Approved polymeric or concrete shaft may be used in non trafficable locations.

5. Cover should lie 25mm above the surrounding natural surface level (not toprotrude excessively above ground) in non trafficable locations.

6. System to be operated as follows; 1) sit on edge of opening, with legs in pit, 2)couple truck hose to quick connector, 3) open discharge control valve & fill tanker,4) close valve, 5) disconnect hose from quick connector or truck. The shaft shall besized and dimensioned to enable this.

7. Quick connector is a Bauer couplings for CWW.

NOTES Regarding Tanker Connection Points:

Roughen pipeand seal withepoxy mortar

STORAGEVOLUME

REFER TO SEWERAGE STANDARDFIGURES MRWA-S-404-D to H FOROUTLET DESIGN DETAILS

Tee restraint not requiredwhere discharge main isrestrained.

Lugged wafer check valve required if discharging to aTanker Connection Point (ref Fig 307-C) or a StormWater drain or pit (ie: discharges to waterways anddischarge pits have a flap gate valve at the outletalready).

<600 ifPractical

>100 >400

CompactedEmbedment

~30

Finishmortarflush withpit wall

<30

Flap gate

30°

1 to 5 mDownstream manualdischarge control valve(if required. Ref noteD)

ReferMRWA-W-204and 205

ReferMRWA-W-204and 205

600 CLASS D COVER (if 600 shaft)750 CLASS D COVER (if 1070 shaft)

Standard 600 shaft (concrete or PP).If PP, install as per Fig 306C(i) from

sewerage standards

MRWA WATER SUPPLY STANDARDS

REVISION NO.ISSUED

MELBOURNE RETAIL WATER AGENCIES

DATE:

DATE:

CHECKED:DRAWN:DESIGNED:

1 2 6 7 8 9 10 12113 4 5

H H

CWW

SEWL

YVW

DATENAME APPROVED:

CWW

SEWL

YVW

DATENAME

APPROVEDDATEDESCRIPTIONREV

A

1 2 63 4 5

B

C

D

A

E

F

G

1 2 6 7 8 9 10 12113 5

A

B

C

D

E

F

G

H

MRWA-W-308

NOT TO SCALE

2012 3

SWABBING, CHLORINATION AND EXTENDING MAINS

R. JAGGER 20/01/2011R. JAGGER 20/01/2011

X C. RIVETTE 04/04/12X C.PAXMAN 04/04/12X K.DAWSON 04/04/12

X R.CARRUTHERS 04/04/12X G.REYNOLDS 04/04/12X A.COSHAM 04/04/12

1 PRE PUBLISHED DRAFT FOR COMMENT 12/07/11 R. JAGGER

2 PUBLISHED FIRST ISSUE 04/04/12 R. JAGGER

3 ADD TEMPORARY END OF LINE ARRANGEMENT 1/12/16 RJ / CP / JT

FIGURE 308-D: EXAMPLE COMPLETED CONNECTION

PE pipe, bolted or butt welded.Flexible lay flat PE sleeve /hose may be acceptable for< DN150 mains where safe todo so.

FIGURE 308-E: END OF LINE WITH PERMANENT VALVEAND SWAB DISCHARGE CONTROL ARRANGEMENT

a. Permanent valve(s) are generally required at temporarydead ends as per Option ii) to v).This is to ensure that the minimum number of customersare affected when later works are completed.If practicable, <10 existing connections shall be designedinto a SOB which is to be completed at a later date (asindicated in Option i).

b. When swabbing downhill is to occur, permanent valves arerequired at the down hill end of the mains to control theswab and keep the main full once swabbing is complete.

c. With respect to Option i), the undisturbed ground behindthe washout shall not be disturbed for a distance of atleast 2 meters.

d. Where washouts on new mains are to be placed hard upagainst a blank plate at the end of a previous stage(Options ii, iii & iv), multiple blocks will make it easier toremove the temporary washout, and in the case of Optionsii & iii, the increased separation will make it easier toattach the standpipes without them clashing.

SWAB BEINGDISCHARGED

TABLE 308-A: SWABBING REQUIREMENTS

FIGURE 308-A: END OF PRIORSTAGE ARRANGEMENTS

FIGURE 308-B: TEMPORARYCHARGING CONNECTIONS FIGURE 308-C: PERMANENT CONNECTIONS

Acceptable where a valve is betterset back from the end of the main(ie: at a splay corner) and there are< 10 connections in between.

<10 CONNECTIONS

Preferred where there are >10 connectionsbetween the next valve back and the end of line.Maintain FL-FL piece to keep distance fromanchor.

Preferred where a hydrant is alsorequired for on going operationalor fire fighting reasons.

Preferred where a hydrant is also required foron going operational or fire fighting reasons.

Preferred where a larger connection is requiredto facilitate swabbing at 0.5 to 1.0 m/s. ReferFigure 308-E and accompanying notes.

(REFER FIGURE 308-E)

(REFER FIG 308-D)

(REFER FIGURE 308-F)

> 2m

TIMBER / RECYCLED BLOCKS

i)

ii)

iii)

v)

iv)

BLANKPLATES

> VALUE IN TABLE 308-A

DISCHARGECONTROL UNITLENGTH (mm)

100 OR 125PE

MAIN SIZE(DN)

150 OR 18OPE225 OR 280PE300 OR 355PE375 OR 450PE450 OR 560PE600750

SWABDIAMETER(mm)

SWABLENGTH(mm)

200250300400475550750900

3003504005005506509001050

NOT REQUIRED

16001800200026003200

NOT REQUIRED1500

HYDRANT1 FLOW(l/s)

51020201826

201826

1826

HYDRANT2 FLOW(l/s)

HYDRANT3 FLOW(l/s)

SITE SPECIFIC PLAN REQUIREDSITE SPECIFIC PLAN REQUIRED

FLOW REQUIRED TO ACHIEVE ASWABBING VELOCITY OF 0.5 m/s

LATTERCONSTRUCTION

Limit of prior construction.Ground must be left undisturbed to

this point when extensionconstruction begins.

STANDPIPES

Pressuretest point

Isolation valve (forpressure testing)

Connectinghose

TEMPORARY ARRANGEMENT NOT REQUIRED

Testable singledetector checkvalve (or better)

METER

Chlorineinjectiontapping

FIGURE 308-F: PERMANENT END OF LINE ASSEMBLY CWW & YVW- DN225 & DN280PE mains SEW- DN225, DN300 or DN375 mains with all in one valve controlled hydrants

NOTES Regarding Large Main End of Line Arrangements:

KEY REFERENCES:· Chlorination and water quality compliance as

per WSA 03-2010 / MRWA Specification 04-02.· Concrete thrust restraints as per MRWA-W-204

and 205A or 205B.· Surface covers as per MRWA-W-302 & 303.

NOTES Regarding Swabbing:A. All mains > DN100 > 15m long shall be

swabbed unless the main contains butterflydivide valves.

B. Swabbing is to be undertaken in accordancewith the swabbing plan (authorised by thesuperintendent) to a velocity of 0.5 to 1.0 m/s.

C. Swabs are single use only, manufactured frompolyurethane foam to AS2281 & AS4020.

D. Swabs are to be marked with the entry pointproperty address using a permanent marker.This is to aid swab reconciliation.

E. Single swabs are acceptable for < DN200mains. (DN100 & 150 swabs are under review)Two swabs are required for each swabbing runon mains > DN200.

F. Swab discharge drinking water may only bedischarged to open land where it will pond, to atanker truck or to a storm water system whichhas adequate silt containment andenvironmental controls.

· For > DN300 and in lower pressure (static P < 400 KPa)DN225 mains, a temporary hose connection between thehydrants will be unable to push the swab with adequatevelocity.

· In such cases, swabbing flows will need to be delivered thoughthe operation of an in line valve.

· This valve (and any bypass valve) shall successfully pass apressure test to the new system test pressure prior toinstallation (to ensure it does not leak super chlorinated waterback into the in service main).

· Install these valves closed and do not operate them until the

downstream system successfully passes its pressure test.· Where the distance back to the last permanent divide valve on

the main is close to the maximum spacing (ie: > 2/3rds of themaximum spacing in Table 300-B), the end of line valve andhydrant arrangement shall be permanent (refer Figure 308-Fand Figure 308-H).

· Where the distance back to the last permanent divide valve onthe main is substantially less than the maximum spacing, theend of line valve and hydrant arrangement shall be temporary(refer Figure 308-G).

· Temporary end of line assemblies shall be sized as per Table106-D.

BLANKPLATES

BLANK PLATE

End of prior stage arrangements Temporary chlorination arrangement

NOTES Regarding Fig 308-H:· Components shown in red are temporary.· Connect chlorination hose & fittings (as

indicated in Figure 308-F) between thepermanent and temporary hydrants tofacilitate charging and chlorination.

· Refer to MRWA-W-105 for assembly details.· Where valves cannot be offset, refer to

MRWA-W-304A & B for details.

SWAB

TEMPORARY CONSTRUCTION(installed with prior construction)

PRIORCONSTRUCTION

START OF LATTERCONSTRUCTION

FIGURE 308-G: TEMPORARY END OF LINE ASSEMBLY ON > DN225 MAINS(known as "CHLORINATION ASSEMBLY")

FIGURE 308-H: PERMANENT END OF LINE ASSEMBLYCWW & YVW- > DN300 MAINS. SEW- > DN450 MAINS

Permanent arrangement

NOTES Regarding Valve & Hydrant Requirements:

DUCKFOOT BEND &HYDRANT

(Joints and pipe information not shown for clarity)

Swab. Inserted just priorto recommencement oflatter construction