3
4
5
6
7
8
MRWA-W-108
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 Agency
owned".
· all other hydrants shall be marked as "Council Owned".
E
DN100
RESERVE
TABLE 300-C
Will be
mostly
Council
Owned
SEW or YVW
00
I&J
E
SCALE:
R. JAGGER
R. JAGGER
DN150
DATE
1/12/16 CP / JT / RJ
CWW
B. VANOS
01/09/16
CWW
SEW
C. PAXMAN
01/09/16
SEW
YVW
J.TOMASI
01/09/16
YVW
DATE
2
RESERVE
APPROVED
3
57
J
58
B
J
H
J
DN150
B
C
E
DN100
59
B
K
L
60
F
L
DN100
A K
L
L
61
G
1mm = 2m at A3
F
50
49
APPROVED: NAME
01/05/16 CP / JT / RJ
1
D
56
51
F
DN100
52
MRWA WATER SUPPLY STANDARDS
DATE:
PUBLISHED FIRST ISSUE
DESCRIPTION
<DN63PE
B
C
DATE:
FIRST DRAFT
REV
D
J
DRAWN:
CHECKED: NAME
H
1
DN100
L
MELBOURNE RETAIL WATER AGENCIES
DESIGNED:
55
RESERVE
The front of every property shall be no more than the maximum hydrant spacing / 2 from the nearest hydrant.
2
D
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, court
bowl SOBs shall include some network main).
120m
200m
D
I
A
WATER
RESIDENTIAL COMMERCIAL HIGH DENSITY RURAL
AGENCY
INDUSTRIAL URBAN
CWW, SEW or YVW 200m
120m
50m
500m
90m
CWW
120m
MFB
I&J
C
L
<DN63PE
B
J
TABLE 300-C: MAXIMUM HYDRANT SPACINGS
CFA
PE
< DN6
RES
ERV
E
B
Will probably
all be Water
Agency
Owned
WATER MAIN
MAXIMUM
MAX NUMBER
NUMBER OF PROPERTIES
SIZE (DN)
CONNECTED
VALVE SPACING VALVES OF SOB
<DN150
25 (YVW), 40 (CWW & SEW)
300 / 500m *
200-300
750m
6
100
375
N/A
1000m
450
N/A
1150m
8
N/A
1500m
525 / 600
675 / 750
N/A
1900m
10
> 750
5000m #
N/A
*
300 in urban areas, 500 in rural areas.
#
Valve spacing for larger mains shall be decided in consultation with the Water Agency.
G
B
54
TABLE 300-B: MAXIMUM SOB SIZES
F
F
L
DN100
M
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.
Place a hydrant adjacent to a valve in each SOB (typically the highest valve
unless the SOB includes a dead end hydrant).
Placement at the highest valve is especially important where there is a
significant rise in the SOB.
(ie: >2m difference in elevation).
Place a hydrant at the lowest point in the SOB where the SOB has a
difference in elevation >5m
Identify where the distance between neighboring hydrants is excessive.
Place as few additional hydrants as possible in the SOB to ensure that the
distance 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".
B
TABLE 300-B
DN100
D
TABLE 300-B
DN100
L
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 off
valves.
F
E
DN100
K
F
N63P
DN100
J
B
J
0
I
10 0
53
10
C
I&J
<D
F
F
DN
H
A
L
L
D
DN
G
E
3P
B
TABLE 300-B
N6
F
12
SECTION 8.2.7.5
MRWA-W-108
<DN6PE
C
D
E
11
DN100
<D
Valve all offtakes from >DN300 mains at the tee
Valve all offtakes from <DN280 mains at the splay.
CWW & SEW do not require valves on DN100 offtakes from DN100 mains
Valve the smaller main (if >DN100) adjacent to tapers / reducers
Valve just after transition to sub-mains
Valve offtakes to court bowls where there are more than 10 connections
between the intersection and the valve inserted as part of Step D
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).
DN375
DN100
A
B
NDW OR DW OF DUAL KEY
REFERENCES
DW ONLY WATER
SECTION 8.2.7.2
SECTION 8.2.7.3
DN300
A
10
FIGURE 300-A: SOB DESIGN EXAMPLE - RELEVANT TO CWW (RESIDENTIAL MFB AREAS)
(40 lot SOB and max 120m between hydrants shown)
TABLE 300-A: RETICULATION SHUT OFF BLOCK (SOB) DESIGN PROCESS
STEP PROCESS STEP DESCRIPTION
9
DN1
2
DN100
1
4
SHUT OFF BLOCK DESIGN
APPERTUNANCE PLACEMENT
DATE
R. CARRUTHERS 01/09/16
D. O'DONOVAN
D. ERREY
5
01/09/16
01/09/16
H
MRWA-W-300A
ISSUED 2016
6
7
8
9
10
11
VERSION NO. 2
12
1
2
3
4
5
6
FIGURE 300-B: SOB DESIGN EXAMPLE - RELEVANT TO CWW (RESIDENTIAL CFA AREAS) AND ALL
SEW RESIDENTIAL AREAS (40 lot SOB and max 200m between hydrants shown)
A
7
SCALE:
8
9
10
A
DN10
0
L
L
3
N6
<D
F
F
F
E
DN100
RESERVE
<DN63PE
D
56
A
J
J
H
J
B
C
F
D
I
I&J
E
DN100
D
<DN63PE
D
56
RESERVE
B
59
B
K
J
57
J
A
DN100
55
E
B
DN150
B
C
ERV
58
B
DN150
RES
57
J
B
D
DN100
DN100
RESERVE
DN375
DN100
I&J
I&J
C
F
00
00
DN1
D
I
54
<DN63PE
<DN6PE
<DN6PE
55
E
B
I&J
D
ERV
3PE
< DN6
54
DN100
DN100
I&J
B
E
B
<DN63PE
RES
DN375
DN100
D
RESERVE
I
DN1
DN100
I
J
DN150
58
B
F&H
J
DN150
B
B
C
C
E
DN100
59
B
K
DN100
DN100
DN300
60
DN100
DN100
DN300
60
L
61
DN100
DN100
F
DN100
F
DN100
J
61
F
DN100
A L
DN100
A K
B
F
F
00
0
I
53
F
J
E
B
3PE
< DN6
10 0
1
DN
N63P
10
F
<D
DN
E
B
I&J
J
F
N63P
F
F
DN100
10 0
D
53
DN
DN
I&J
PE
E
3P
N6
<D
D
B
C
12
FIGURE 300-C: SOB DESIGN EXAMPLE - RELEVANT TO ALL YVW RESIDENTIAL AREAS
(25 lot SOB and max 200m between hydrants shown)
1mm = 2m at A3
This standard should be
read in conjunction with
MRWA-S-300A.
DN100
<D
11
G
G
RESERVE
RESERVE
J
F
49
50
F
F
DN100
49
50
R. JAGGER
B. VANOS
2
1
DATE:
DATE
1/12/16 CP / JT / RJ
CWW
B. VANOS
01/09/16
CWW
FIRST DRAFT
01/05/16 CP / JT / RJ
SEW
C. PAXMAN
01/09/16
SEW
YVW
J.TOMASI
01/09/16
YVW
DESCRIPTION
1
DATE
2
APPROVED
3
4
H
APPROVED: NAME
PUBLISHED FIRST ISSUE
REV
MRWA WATER SUPPLY STANDARDS
DATE:
DRAWN:
CHECKED: NAME
H
F
52
51
MELBOURNE RETAIL WATER AGENCIES
DESIGNED:
J
DN100
52
51
K
DATE
SHUT OFF BLOCK DESIGN EXAMPLES
APPERTUNANCE PLACEMENT
R. CARRUTHERS 01/09/16
D. O'DONOVAN
D. ERREY
5
01/09/16
01/09/16
6
7
8
9
10
MRWA-W-300B
ISSUED 2016
11
VERSION NO. 2
12
5
6
E
A
RELEVANT MRWA
-W-300 FIGURE
COLOURED PATCH
(1 PER VALVE)
COVER / SURROUND
DISC (1 PER VALVE)
POST (1 POST
FOR EACH DW /
NDW CLUSTER)
COLOURED
PATCH
KERB DISC
COVER /
SURROUND DISC
C
C
B
A
C
LINE
B
LINE
KERB
B
LINE
C
MARKER POST
(TRIANGLE AT TOP TO
POINT TOWARDS
FITTING)
PROPERTY
VALVE MARKER DISC (WHEN NO KERB)
REFER NOTE 4.
1800±500
VALVE OR HYDRANT
LINE
URBAN PROPERTY LINE
RURAL AREA
DEVELOPED AREA
LEGEND:
D
KERB
C
G
LINE
E
DRINKING (W)
WATER MAIN
LINE
B
A
URBAN P R O P E R T Y
LIN
C
A
NDW WATER MAIN
KERB
RELEVANT MRWA -W-301 FIGURE
12
RB
POST
KE
KERB
11
DEVELOPED AREA
E
A
10
LIN
ROAD CATS EYE
(BLUE)
9
RB
POST
8
KE
RURAL
AREA
OPEN RESERVES OR ROADS
WITHOUT KERBS
PAVED ROAD (ABUTTED BY URBAN
PRIVATE PROPERTY)
PAVED ROAD (ABUTTING PUBLIC OPEN
SPACE OR RURAL PRIVATE PROPERTY)
B
7
TABLE 300-A: HYDRANT & VALVE MARKING REQUIREMENTS
NOT CLUSTERED
CLUSTERED
HYDRANT
VALVES (PER VALVE)
VALVES
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
4
DRINKING (W)
WATER MAIN
3
NON-DRINKING
(NDW) WATER
2
ROAD PATCH
1
MAIN
FIGURE 300-A: OPEN RESERVES OR ROADS WITHOUT KERBS
HYDRANT MARKER POST
VALVE MARKER POST
HYDRANT MARKING CATS EYE
HYDRANT MARKING REFLECTIVE PATCH
VALVE MARKING DISC
D
FIGURE 300-D: TYPICAL POSITIONING OF VALVE AND HYDRANT MARKERS
FENCE
ROAD CL
KERB VALVE
MARKER DISC
DEVELOPED
PROPERTY
E
100 to 150
E
HYDRANT PATCH
FOOTPATH
HYDRANT
CATS EYE
HYDRANT
OR VALVE
GENERAL NOTES:
MAIN
MAIN
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
FIGURE 300-B: PAVED ROAD (ABUTTED BY URBAN PRIVATE PROPERTY)
F
MARKER POST (TRIANGLE
AT TOP TO POINT
TOWARDS FITTING)
KERB VALVE
MARKER DISC
ROAD CL
100 to 150
Valves shall be marked differently according to whether they are deemed to part of a "valve cluster" as defined in Table 300-A.
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.
When temporary end of line hydrants are removed, all markings shall be removed concurrently.
When a main is renewed or decommissioned, all redundant markings shall be completed removed.
40mm washouts shall be marked as valves.
Type, location, fixture arrangements and orientation of markers to be in accordance with MRWA-W-301.
Refer to water agency product catalogues for details of marking products.
Locate marker posts at right angles to the main with post facing towards the valve or hydrant.
Where there is a valve cluster of the same network (DW or NDW) only one marker post is required at the valve cluster.
Where there is a valve cluster containing both NDW and DW valves, a single DW and a single NDW post will be required.
The construction contractor is to install these markings.
F
HYDRANT PATCH
200±100
G
FOOTPATH
G
HYDRANT
CATS EYE
HYDRANT
OR VALVE
MAIN
MAIN
FIGURE 300-C: PAVED ROAD (ABUTTED BY PUBLIC OPEN SPACE OR RURAL LAND)
MELBOURNE RETAIL WATER AGENCIES
H
REV
DESCRIPTION
1
DATE
2
APPROVED
3
DESIGNED:
DATE:
DRAWN:
CHECKED: NAME
DATE:
DATE
CWW
SEWL
SEWL
YVW
YVW
4
H
APPROVED: NAME
CWW
NOT TO SCALE
MRWA WATER SUPPLY STANDARDS
DATE
VALVE AND HYDRANT MARKING
ARRANGEMENTS
MRWA-W-300
ISSUED 2012
5
6
7
8
9
10
11
REVISION NO. 3
12
3
4
· BLACK (FOR OPERATIONAL
HYDRANTS)
1300 ± 200 (RESERVES & RURAL)
7
· RED (FOR FIRE FIGHTING
NORMALLY
OPEN VALVE ON
<DN250 MAIN
HYDRANTS) or
· DARK BLUE (FOR VALVE)
REFLECTOR DISC (BLUE)
NORMALLY OPEN
VALVE ON >DN250
MAIN
NORMALLY OPEN
<DN250 VALVE OFF
>DN250 MAIN
NORMALLY
CLOSED VALVE
NON-DRINKING
WATER
VALVES
WHITE (FOR DW) or
PURPLE (FOR NDW)
NORMALLY
OPEN VALVE ON
<DN250 MAIN
NORMALLY OPEN
VALVE ON >DN250
MAIN
NORMALLY OPEN
<DN250 VALVE OFF
>DN250 MAIN
A. Colour patch to be preformed
thermoplastic road marking product as per
AS4049.2.
B. The substrate shall be thoroughly cleaned
or roughened and chemically treated as
required to achieve a strong bond between
the marking and substrate.
C. Ensure divide line between colours is
orientated correctly to indicate the size /
status of the main on either side of the
valve.
350 ± 50
>50
THESE MARKINGS TO BE
INSTALLED BY CONSTRUCTION
CONTRACTOR
FIRE SERVICE
OFFTAKE
BOLT OR PIN
CONCRETE
SURROUND
KERB
VALVE
MARKER
DISC
ABOVE GROUND HYDRANTS TO BE MARKED AS PER FIGURE 305-C.
VALVE
MARKER
DISC
BACK OF KERB
FACE OF KERB
EXTENT OF
MARKING
TRAFFICABLE VALVES IN
PAVED AREAS (NO SURROUND)
NON TRAFFICABLE VALVES IN CLUSTERS OR WHEN NO KERB
PIN WITH KINK
VALVE WITH
COLOURED
PATCH (REFER
FIG 301-B)
REFER FIG 301-E
FIGURE 301-D: MARKER INSTALLATIONS EXAMPLES (PLAN VIEW)
DESCRIPTION
DATE
2
APPROVED
3
Lettering to be
stamped or
etched at least
0.03mm deep
DO NOT FIT DISCS TO BLUE STONE
PAINTED AREA
DIVIDE VALVE (FOR USE IN MAINS > DN375)
OFFTAKE OR RETICULATION VALVE
SCOUR CONTROL VALVE
HYDRANT CONTROL VALVE
AIR VALVE CONTROL VALVE
FROG MOUTH CONTROL VALVE
D
BYPASS VALVE
CROSS CONNECTION VALVE
WASHOUT
Where necessary, recycled water may be
indicated with a separate dedicated disc.
E
F
450 ± 50
CATS EYE
BOND
150
FIGURE 301-F: CATS EYE
WHITE
ROAD PAVEMENT
NOTES on Figure 301-E:
1. Attach to ground using hotmelt marker adhesive
(bituminous) or two pack epoxy adhesive as per
AS1906.3.
2. Apply as per manufacturers instructions.
Roughen surface with cold chisel & use wire brush
to thoroughly clean surface before application.
3. Cats eyes are not required at Acceptance of Works.
4. Cats eyes are required at End of Defects.
DESIGNED:
DATE:
DRAWN:
CHECKED: NAME
DATE:
DATE
CWW
SEWL
SEWL
YVW
YVW
LIP OF KERB
FIGURE 301-H: ROAD PAVEMENT HYDRANT REFLECTIVE PATCH
NOTES on Figure 301-H:
Ø75
A. Use preformed thermoplastic road marking product,
white in colour as per AS4049.2 or as per water
agency 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.
FIGURE 301-G: SPINDLE CAP FOR VALVES
NOTES 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 have
an attached waterproof label with the customer's address.
B. Patch may be applied using vicroads approved marking
G
paint.
C. Point triangle to hydrant (if hydrant in road, point
triangle towards road center).
D. Patches are not required at Acceptance of Works.
E. Patches are required at End of Defects.
NOT TO SCALE
MRWA WATER SUPPLY STANDARDS
H
APPROVED: NAME
CWW
4
DV
V
SCV
HV
AV
FV
BP
XC
WO
VALVE TYPE
1. For fastening into concrete (kerb or surround): use 316 SS
3. For fastening to plastic covers or surrounds, grind off plastic
concrete pins, pre-drilled with 5mm min masonry bit.
protrusions in area to which disc is to be fitted, drill through cover
2. For fastening to ductile iron, drill hole, tap thread and fasten with
and attach disc with 316 SS, M6, 60mm long cup head bolts &
pan head M6, 25mm (1 inch) long 316 SS metal thread screws.
316 SS nuts and washers.
MELBOURNE RETAIL WATER AGENCIES
H
C
TABLE 301-C: VALVE DISC LETTERING
DISC EXAMPLE: DRINKING WATER
CROSS CONNECTION VALVE
DISC EXAMPLE: NON
DRINKING WATER
BYPASS VALVE
NDW Hydrant on
main >DN250
BELOW GROUND HYDRANTS
LETTER(S)
Ø6.5mm
BP
DW Hydrant on /
off main >DN250
NOTES Regarding Fastening Arrangements:
FIGURE 301-E: VALVE MARKER DISCS
100 to 150
FACE
TRIANGLE
PATCH
TOWARDS
HYDRANT
CENTRE OF ROAD
LIP OF KERB
LIP OF KERB
BACK OF KERB
FACE OF KERB
FOOTPATH
FOOTPATH
200 ± 100
Ø40mm and
MIN 2mm
THICK 316 SS
W
VALVE
CONCRETE FASTENING PIN DETAIL
VALVE IN ROADWAY
ABUTTING OPEN SPACE
REFER FIG
301-A
WATER
PLASTIC VALVE SURROUNDS
4.8mm OD,
50mm LONG
B
Hydrant
connected
to main
>DN250
XC
250 ± 20
HYDRANT
HYDRANT IN URBAN ROADWAY
F
DW Hydrant on
main <DN250
W
CONCRETE
Plain (no
colour)
Hydrants offset from >DN250
mains or located on valve bypass
NDW Hydrant on
pipework shall be marked Black
main <DN250
VALVE
MARKER DISC
FOR LONE VALVES WHERE THERE IS A KERB
CENTRE OF ROAD
HYDRANT
KERB FASTENING POSITION
100 to 150
REFER
FIG 301-F
If Rectangular
Cover
FIGURE 301-C: HYDRANT / FLUSHING BOX COLOURS
ABOVE GROUND HYDRANTS
WATER
A
Lilac (if NDW)
FOR TRAFFICABLE VALVES IN CLUSTERS OR WHEN NO KERB
ROAD PAVEMENT
E
LIP OF KERB
BACK OF KERB
FACE OF KERB
FOOTPATH
200 ± 100
REFER
FIG 301-H
12
CONNECTED TO
CONNECTED TO
<DN250 MAIN
>DN250 MAIN
PLAIN (NO COLOUR)
YELLOW
RED TOP
BLACK TOP
1
1
LILAC LID
2 LILAC & 2 YELLOW
LILAC BELOW RED TOP LILAC BELOW BLACK TOP
BELOW GROUND
ABOVE GROUND
BELOW GROUND
ABOVE GROUND
TRAFFICABLE VALVE SURROUNDS
HYDRANT IN ROADWAY
ABUTTING OPEN SPACE
MARKER
POST
11
LEVEL
DIALYSIS
SOB VALVE
TRAFFICABLE VALVES IN
NATURE STRIPS
1
DW
DW
NDW
NDW
NORMALLY
CLOSED VALVE
VALVE
D
REV
SYSTEM
Hydrant
connected
to main
<DN250
CEMENT
STABILIZED
SOIL (5%)
FIGURE 301-A: MARKER POST INSTALLATION (SECTION VIEW)
MARKER
POST
10
OTHER
VALVES
>250
G
9
TABLE 301-B: HYDRANT / FLUSHING BOX COLOURS
DRINKING
WATER
VALVES
POST AS PER WATER AGENCY
PRODUCT CATALOGUE
REFER
FIG 301-A
8
NOTES Regarding Figure 301-B:
A
C
6
FIGURE 301-B: VALVE SURROUND COLOURING
H (FOR HYDRANT) or V (FOR VALVE)
POINT THE POST TRIANGLE TO THE
SURFACE FITTING AND ROAD
B
5
70
2
70
1
DATE
MRWA-W-301
VALVE AND HYDRANT MARKING DETAILS
(CWW and SEW ONLY)
ISSUED 2012
5
6
7
8
9
10
11
REVISION NO. 3
12
1
2
3
4
5
6
7
8
9
10
a.
A
All surface box covers and frames to be in accordance with AS 3996: class D loading trafficable and the water agency product catalogue.
Hinge covers to close in the direction of traffic.
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.
No surround is required for valve covers in road pavement.
b.
c.
d.
12
NON TRAFFICABLE
NOTES on Valves in Road Pavement:
TRAFFICABLE
11
A
VALVE DISC
MARKER ( IF
REQUIRED)
SV
WATER
WATER
VALVE
VALVE
NOTES on Valves in Nature Strips & Open Reserves:
Valve markings
refer MRWA-W-301
Valve markings
refer MRWA-W-301
B
PAVEMENT
Valve disc marker
( if required)
FSL
Concrete surround (if
required). Refer Note C.
100 to 350
C
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 water
entry 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.
Compacted crushed rock
as per MRWA-W-201
(Type R in road pavement)
(Type F in nature strip).
Shroud must be
clear of surface
fitting
GRADE
Plastic
surround
100 to 350
50
30
Minimum cover
compacted crushed
rock over lip of cover
C
KERB
2 cups cement
spread over surface
of compacted
crushed rock
5m
2m
RESIDENTIAL
DRIVEWAY
150 / 225 DWV white
PVC SN4 pipe shroud
Compacted crushed rock as per
MRWA-W-201 (Type F).
150 / 225 DWV white
PVC SN4 pipe shroud
5m
FIGURE 302- A: TYPE A TRAFFICABLE
VALVE SURFACE ARRANGEMENT
D
KERB
D
Minimum cover of nature
strip top soil
Shroud must be
clear of surface fitting
> 400
2m
2 of 300 x 300 x 50
Approved hardwood, recycled
plastic or concrete support
B
Valve disc marker
( if required)
Valve markings
refer MRWA-W-301
TRAFFICABLE
COVERS REQUIRED
IN THESE PARTS OF
THE NATURE STRIP
FIGURE 302-D: DRINKING WATER NON TRAFFICABLE
VALVE SURFACE ARRANGEMENT
VALVE DISC MARKER
( IF REQUIRED)
DIRECTION OF TRAFFIC
KERB
HINGE
S.V
TRAFFICABLE COVERS REQUIRED IN INDUSTRIAL AREAS
WATER
VALVE
E
FIGURE 302-C: TRAFFICABLE VALVE COVERS
IN NON TRAFFICABLE AREAS
Valve disc marker
( if required)
Valve markings
refer MRWA-W-301
100 to 350
Shroud must be
clear of surface
fitting
G
2 of 300 x 300 x 50
Approved hardwood, recycled
plastic or concrete support
GENERAL NOTES:
150 / 225 DWV white
PVC SN4 pipe shroud
FIGURE 302- B: TYPE B TRAFFICABLE VALVE SURFACE ARRANGEMENT
R. JAGGER
1/12/16 CP / JT / RJ
2
PUBLISHED FIRST ISSUE
04/04/12 R.JAGGER
X CWW
C. RIVETTE
04/04/12
X CWW
1
PRE PUBLISHED DRAFT FOR COMMENT
12/07/11 R.JAGGER
X SEWL
C.PAXMAN
04/04/12
X SEWL
G.REYNOLDS
04/04/12
X YVW
K.DAWSON
04/04/12
X YVW
A.COSHAM
04/04/12
1
2
APPROVED
3
4
Compacted crushed rock as per
MRWA-W-201 (Type F).
150 / 225 DWV white
PVC SN4 pipe shroud
MRWA WATER SUPPLY STANDARDS
04/04/2011
DATE: 04/04/2011
NEW FIGURE 302-C
DATE
F
> 400
2 cups cement
spread over surface
of compacted
crushed rock
DATE:
3
DESCRIPTION
>30
Minimum cover
compacted crushed
rock over lip of cover
G
FIGURE 302-E: NON-DRINKING WATER NON
TRAFFICABLE VALVE SURFACE ARRANGEMENT
DRAWN:
D. TOLENTINO
DATE
CHECKED: NAME
REV
>50
100 to 350
MELBOURNE RETAIL WATER AGENCIES
H
GRADE
Plastic
surround
NOT FOR USE IN YARRA VALLEY WATER AREA
DESIGNED:
Minimum cover of nature
strip top soil
Shroud must be
clear of surface
fitting
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 is
transmitted 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.
Compacted crushed rock as
per MRWA-W-201
(Type R in road pavement)
(Type F in nature strip).
Valve disc marker
( if required)
Valve markings
refer MRWA-W-301
PAVEMENT
FSL
F
E
FOOTPATH
APPROVED: NAME
NOT TO SCALE
H
DATE
VALVE SURFACE ARRANGEMENTS
TRAFFICABLE & NON-TRAFFICABLE AREAS
R.CARRUTHERS 04/04/12
5
6
7
8
9
10
MRWA-W-302
ISSUED 2012
11
REVISION NO. 3
12
2
3
4
5
6
B
>50
GRADE
ROUND (NDW) SHOWN
Minimum cover of nature
strip top soil
12
Minimum cover of
nature strip top soil
A
GRADE
FSL
100 to 250
> 400
B
Shroud must be clear of
surface fitting
NOTES on Hydrants in Nature Strips & Open Reserves:
a.
225 DWV white PVC
SN4 pipe shroud
b.
c.
FIGURE 303-A: NON TRAFFICABLE NON-DRINKING WATER HYDRANT COVERS
ROUND (IF NDW) AND SQUARE (IF DW)
C
d.
Hydrant marking if
NDW.
Refer MRWA-W-01
BOLT AND MAIN ALIGNMENT
Hydrant head orientation
under the cover
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).
Non trafficable covers shall not be cut down in size.
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.
Elevate cover up to 75 above finished surface level and grade soil away to
prevent water entry.
2m
KERB
2m
5m
RESIDENTIAL
DRIVEWAY
Compacted crushed rock as
per MRWA-W-201
(Type R in road pavement)
(Type F in nature strip).
5m
KERB
Concrete surround. Refer
Note c (if required).
PE flushing
box & lid
Only SEW allow use of all in
one valve controlled hydrant
All in one valve controlled hydrant shown.
Same arrangement for flushing boxes.
FIGURE 303-D: NON TRAFFICABLE COVERS FOR
ALL IN ONE VALVE CONTROLLED HYDRANTS OR FLUSHING BOXES
C
600 standard Class
D heavy cover
Hydrant marking if NDW
refer MRWA-W-301
TRAFFICABLE
COVERS REQUIRED
IN THESE PARTS OF
THE NATURE STRIP
2 of 300 x 300 x 50
Approved hardwood, recycled
plastic or concrete support
FSL
100 to 250
600 reinforced concrete
or MC shaft and cover
arrangement as per Fig
306-C(i) from sewerage
standards
PAVEMENT
100 to 250
Compacted crushed rock as
per MRWA-W-201 (Type F
trafficable area)
PAVEMENT
FSL
E
11
Minimum cover compacted
crushed rock over lip of cover
> 300
Compacted crush rock
as per MRWA-W-201
(Type F trafficable area)
D
10
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.
>30
2 cups cement
spread over surface
of compacted
crushed rock
9
NOTES on Hydrants in Road Pavement:
A
100 - 250
8
Purple if NDW
Hydrant marking if NDW.
Refer MRWA-W-301
FSL
7
>50
1
Flushing box shown.
Same arrangement for all
in one valve controlled
hydrant (SEW only) .
4 of 300 X 300 X 50
Approved hardwood, recycled
plastic or concrete supports,
one each side of shaft.
D
Compacted Crushed Rock as per
MRWA-W-201 (Type R trafficable area)
FIGURE 303-E: TRAFFICABLE COVER FOR ROADS FOR
ALL IN ONE VALVE CONTROLLED HYDRANTS OR FLUSHING BOXES
E
KERB
TRAFFICABLE HYDRANT REQUIRED IN INDUSTRIAL AREAS
FIGURE 303-B: TRAFFICABLE AREA HYDRANT COVERS
Hydrant marking if NDW
refer MRWA-W-301
FOOTPATH
Hinged heavy cover (ie:
large fitzroy box)
FSL
F
GENERAL NOTES:
1.
2.
3.
4.
5.
G
6.
7.
F
FIGURE 303-C: TRAFFICABLE HYDRANT
COVERS IN NON TRAFFICABLE AREAS
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.
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.
Install cover, surround, spindle sleeve, shroud and shroud support so that no loading is transmitted to the valve or pipe.
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.
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.
For hydrant marking arrangements refer to MRWA-W-300 & 301.
Refer to water agency products catalogue for authorized materials.
PE non trafficable
flushing 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.
MELBOURNE RETAIL WATER AGENCIES
DESIGNED:
R. JAGGER
3
REMOVE OLD DETAIL A. NEW FIG 303-C
1/12/16 RJ / CP / JT
2
PUBLISHED FIRST ISSUE
04/04/12 R.JAGGER
X CWW
C. RIVETTE
04/04/12
X CWW
1
PRE PUBLISHED DRAFT FOR COMMENT
12/07/11 R.JAGGER
X SEWL
C.PAXMAN
04/04/12
X SEWL
G.REYNOLDS
04/04/12
X YVW
K.DAWSON
04/04/12
X YVW
A.COSHAM
04/04/12
REV
DESCRIPTION
1
DATE
2
APPROVED
3
4
APPROVED: NAME
Compacted Crushed Rock as per
MRWA-W-201 (Type R trafficable area)
G
FIGURE 303- F: DRIVEWAY, PARKING BAY & FOOTPATH COVERS FOR
ALL IN ONE VALVE CONTROLLED HYDRANTS OR FLUSHING BOXES
NOT TO SCALE
H
DATE
MRWA-W-303
HYDRANT & WASHOUT
SURFACE ARRANGEMENTS
R.CARRUTHERS 04/04/12
5
Flushing box shown.
Same arrangement for all in one
valve controlled hydrant (SEW only).
MRWA WATER SUPPLY STANDARDS
04/04/2011
DATE: 04/04/2011
DATE:
DRAWN:
D. TOLENTINO
DATE
CHECKED: NAME
H
> 100
CONCRETE
100 to 250
ISSUED 2012
6
7
8
9
10
11
REVISION NO. 3
12
1
2
3
4
5
6
7
8
9
TABLE 304-A: HYDRANT AND AIR VALVE SELECTION AND ARRANGEMENTS
10
11
12
NOTES Regarding Table 304-A:
1.
A
2.
3.
4.
B
5.
6.
7.
8.
C
9.
10.
11.
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 and
location of air fittings.
Air valve requirements should be determined using water agency approved air valve supplier software (and software
settings used by the water agency) and an appropriate surge analysis.
Options nominated first are preferred if practical.
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.
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, or
B- 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, or
C- there is inadequate clearance from other buried assets and those assets cannot be reasonably moved.
YVW air valves must be Offset and Above Ground. If this is not possible, contact YVW.
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.
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)).
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.
In line hydrants connected to >DN250 trafficable mains would only be acceptable if there was no alternative.
There is no other option than for air valves connected to trafficable mains to be offset and located in a non trafficable
location.
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.
A
B
C
GENERAL NOTES:
1.
2.
3.
D
>200
FSL
Main connection
detail as per FIG
305-G or H
F
Surface fitting
detail as per
FIG 305: A, D,
E or F
If FIG 304:iv.
Vertical bend
>DN250 MAIN
ROAD PAVEMENT
Main connection
detail as per FIG
305: I, J of K
FALL
If FIG 304:iii
Horizontal bend
followed by
vertical bend at
end of line.
FIGURE 304-i: SECTION VIEW.
IN LINE ARRANGEMENT
BACK OF KERB
Surface fitting
detail as per
FIG 305- A,
B, C or D
E
Valve required
where "offtake
valve" indicated in
Table 304-A.
DN100
DN100 pipework. Require
a DN150 to DN100 taper
where A.V is >DN100.
FOOTWAY RESERVE OR
MEDIAN STRIP
VALVE
>800 (if below ground), or
>2m (if above ground A.V)
FIG 305-A
HYDRANT (IF
WITH AIR
VALVE)
ROAD PAVEMENT
R. JAGGER
>800 (if below ground), or
>2m (if above ground A.V & YVW)
>5m (if above ground A.V & CWW or SEW)
For hydrants and <DN100
air valves, DN100 pipework.
For >DN100 air valves,
DN150 pipework.
VALVE (IF
REQUIRED)
Valve required
where "offtake
valve" indicated in
Table 304-A.
CLARIFIED PREFERENCES
1/12/16 RJ / CP / JT
2
PUBLISHED FIRST ISSUE
04/04/12 R.JAGGER
X CWW
C. RIVETTE
04/04/12
X CWW
1
PRE PUBLISHED DRAFT FOR COMMENT
12/07/11 R.JAGGER
X SEWL
C.PAXMAN
04/04/12
X SEWL
G.REYNOLDS
04/04/12
X YVW
K.DAWSON
04/04/12
X YVW
A.COSHAM
04/04/12
DATE
APPROVED
3
4
APPROVED: NAME
NOT TO SCALE
H
DATE
HYDRANT AND AIR VALVE
ARRANGEMENTS
R.CARRUTHERS 04/04/12
5
G
FIGURE 304-iv: STANDARD OFFSET ARRANGEMENT (PLAN)
MRWA WATER SUPPLY STANDARDS
20/02/2011
DATE: 20/02/2011
3
2
ROAD PAVEMENT
MAIN
DATE:
DRAWN:
D. TOLENTINO
DATE
CHECKED: NAME
H
F
BACK OF KERB
MELBOURNE RETAIL WATER AGENCIES
DESIGNED:
FIG 305-A,
D, E or F
AIR VALVE
OR
HYDRANT
>200
>200
FIGURE 304-iii: DOUBLE OFFSET ARRANGEMENT (PLAN)
1
>800
FOOTWAY RESERVE OR
MEDIAN STRIP
FIG 305-A,
D, E or F
AIR VALVE
OR
HYDRANT
>800
MAIN
DESCRIPTION
E
VALVE
FIGURE 304-ii: SECTION VIEW. TYPICAL OFFSET ARRANGEMENTS
G
REV
>DN250 MAIN
FIG 305-A
HYDRANT (IF
WITH AIR
VALVE)
BACK OF KERB
VALVE (IF
REQUIRED)
D
>800
FIG 305-A,
D, E or F
AIR VALVE
OR
HYDRANT
Valve required
where "offtake
valve" indicated
in Table 304-A.
For definitions of trafficable and non-trafficable refer to MRWA-W-201.
Require an air egress fitting between any two valves to facilitate charging of the water mains.
Hydrants shall be located adjacent to valves wherever possible (as per Figure 205-K).
6
7
8
9
10
MRWA-W-304
ISSUED 2012
11
REVISION NO. 3
12
1
2
3
4
5
6
7
8
9
10
11
12
LEGEND
A
NOTE:
HYDRANT (FIG 305-A)
HYDRANT OR AIR VALVE (FIG 305-A, D, E or F)
ALL IN ONE VALVED HYDRANT (FIG 305-B)
FRONT BOUNDARY
ALWAYS LOCATE
NATURE STRIP VALVES
AND HYDRANTS AS
CLOSE AS PRACTICAL TO
THE SPLAY CORNER
Underground fittings
may be single offset
where practical.
Above ground fittings
shall be double offset
where practical.
AIR VALVE (FIG 305-D, E or F)
> DN250 MAIN
KERB
Locate valves and
hydrants in the nature
strip as close to the
splay corner as practical
VALVED RISER PLUS HYDRANT OR AIR VALVE (FIG 305-C or D)
FIGURE 304B-D: CWW-SEW- YVW NON TRAFFICABLE
MAIN >DN250
·
·
·
·
B
FRONT BOUNDARY
<DN250
FRONT BOUNDARY
MAIN
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.
> DN250 MAIN
KERB
FRONT BOUNDARY
KERB
C
>
FIGURE 304B-C: NON TRAFFICABLE MAIN >DN250
FIGURE 304B-A: CWW-SEW-YVW NON TRAFFICABLE
MAIN <DN250
·
FIGURE 304B-B: SEW NON TRAFFICABLE HYDRANTS
ON MAINS >DN250
IN LINE STANDARD HYDRANT
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
·
·
·
·
IN LINE ALL IN ONE VALVED HYDRANT
TRAFFICABLE MAINS <DN250
C
DN450 MAIN
KERB
FIGURE 304B-E: NON TRAFFICABLE MAIN >DN450
·
·
·
NON TRAFFICABLE
OFFSET VALVE CONTROLLED AIR VALVE + HYDRANT
YVW AIR VALVE SHALL BE ABOVE GROUND
CWW - SEW AIR VALVE SHALL BE BELOW GROUND
D
D
FRONT BOUNDARY
FRONT BOUNDARY
FRONT BOUNDARY
NON
TRAFFICABLE
AREA
> 5m
>
KERB
E
B
FRONT BOUNDARY
> DN250 MAIN
KERB
A
<DN250
KERB
MAIN
<DN250
> 3m
FIGURE 304B-F: SEW TRAFFICABLE MAIN <DN250
FIGURE 304B-G: CWW-YVW TRAFFICABLE MAIN <DN250
IN LINE STANDARD BELOW GROUND HYDRANT
OFFSET STANDARD BELOW GROUND HYDRANT
<DN250
< 10m
>
MAIN
·
TRAFFICABLE MAINS >DN250
·
DN450 MAIN
ROAD PAVEMENT
> DN250 MAIN
E
FIGURE 304B-H: CWW-YVW TRAFFICABLE MAIN <DN250
·
> DN250 MAIN
KERB
KERB
MAIN
DN450 MAIN
FIGURE 304B-I: CWW-SEW ABOVE GROUND AIR VALVES
IN LINE STANDARD BELOW GROUND HYDRANT WHERE IT IS
IMPRACTICAL TO OFFSET
LOCATE HYDRANT IN FRONT OF DRIVEWAY OR WITHIN 10m OF
INTERSECTION, and
OFFSET >3m FROM BACK OF KERB WHERE PRACTICAL.
·
·
·
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.
F
F
> DN250 MAIN
FRONT BOUNDARY
KERB
KERB
> 3m
SEW Shown
G
FRONT BOUNDARY
< 10m
> DN250 MAIN
>
KERB
>
CWW / YVW Shown
FIGURE 304B-L: CWW-SEW-YVW TRAFFICABLE MAIN >DN450
FIGURE 304B-J: CWW-SEW-YVW TRAFFICABLE MAIN >DN250
·
·
·
DN450 MAIN
VALVE CONTROLLED OFFSET BELOW GROUND HYDRANT OR AIR VALVE
YVW AIR VALVE TO BE ABOVE GROUND
ALL OTHER FITTINGS TO BE BELOW GROUND
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.
·
·
·
OFFSET VALVE CONTROLLED AIR VALVE PLUS HYDRANT
YVW AIR VALVE TO BE ABOVE GROUND
ALL OTHER FITTINGS TO BE BELOW GROUND
MELBOURNE RETAIL WATER AGENCIES
DESIGNED:
R. JAGGER
DATE
APPROVED: NAME
PUBLISHED FIRST ISSUE
01/12/16 RJ / CP / JT
X CWW
B. VANOS
1/10/2016 X CWW
R.CARRUTHERS 1/12/2016
1
PRE PUBLISHED DRAFT FOR COMMENT
12/03/16 RJ / CP / JT
X SEWL
C. PAXMAN
1/10/2016 X SEWL
D. O'DONOVAN 1/12/2016
X YVW
J. TOMASI
1/10/2016 X YVW
DESCRIPTION
1
DATE
2
APPROVED
3
4
D. ERREY
5
KERB
G
FIGURE 304B-M: CWW-SEW-YVW DIVIDE VALVE ON
MAIN >DN450
·
·
OFFSET BYPASS WITH HYDRANT AND AIR VALVE.
AIR VALVE LIKELY REQUIRED WHERE THIS IS AT A DISTINCT
HIGH POINT
NOT TO SCALE
H
DATE
2
REV
DN450 MAIN
MRWA WATER SUPPLY STANDARDS
1/02/2016
DATE: 1/02/2016
DATE:
DRAWN:
R. JAGGER
CHECKED: NAME
H
FRONT BOUNDARY
<DN250 MAIN
FRONT BOUNDARY
HYDRANT AND AIR VALVE
ARRANGEMENT EXAMPLES
1/12/2016
MRWA-W-304B
ISSUED 2016
6
7
8
9
10
11
REVISION NO. 2
12
1
2
3
4
5
6
7
HYDRANT SURFACE DETAILS
Install markings as per
MRWA-W-301
FSL
A
FSL
9
Install markings as per
MRWA-W-301
Standard 600 shaft
(concrete or PP).
If PP, install as per
Fig 306C(i) from
sewerage standards
Install markings as per
MRWA-W-301
8
2.
3.
DN100
>100
APPROVED BALL OR
BUTTERFLY VALVE
DN100
IN LINE ONLY
FIGURE 305-C: BELOW GROUND IN LINE HYDRANT WITH ISOLATION VALVE
· Only for SEW for mains >DN250 · Only spring hydrants permitted.
· Non-trafficable where practical. · Refer to MRWA-W-303 for
details.
· Not to be offset from main.
1. Use for CWW or YVW where:
· Main is >DN250 .
3. Only use spring hydrants.
· An offset hydrant would normally be required but this requirement cannot
4. All such hydrants are to be Water Agency owned and not included as part of fire
practically be accommodated due to site constraints, ie: other assets too close.
fighting spacing (as cannot be accessed by fire fighters).
2. Non-trafficable where practical.
5. Approved polymeric (non-trafficable) or concrete (trafficable) shaft may be used.
C
Standard 600 or 1070 shaft
(concrete or PP).
If 600PP, install as per Fig
306C(i) from sewerage
standards
600 CLASS D COVER (if 600 shaft)
750 CLASS D COVER (if 1070 shaft)
FSL shall be above the 1
in 100 year flood level
5mm thick aluminum checker plate lid with
stiffening spacers
<600 if
Practical
20mm bleed
with 316 ss
ball valve
Ball or butterfly valve.
Required only if in line
main connection.
20mm bleed
with 316 ss
ball valve
FIGURE 305-I: OFFSET HYDRANT
CONNECTION TO MAINS <DN150
> 300 & > 31
SHAFT HEIGHT
2 cups cement
spread over
surface
Concrete
surround
Compacted 20mm
single sized
crushed rock
FIGURE 305-F: ABOVE GROUND SMALL AIR
VALVES
FIGURE 305-D: BELOW GROUND AIR VALVE WITH ISOLATION VALVE
F
G
1. 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 protrude
excessively 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.
Loose locating
brackets at 10 and 2
o'clock
PERSPECTIVE VIEW OF TOP OF SHAFT ARRANGEMENT
1. 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.
AIR VALVE DETAILS
DESCRIPTION
1
DATE
2
APPROVED
3
D
· Fit valve directly to the offtake tee.
FIGURE 305-H: IN LINE AIR VALVE
CONNECTION TO MAINS >DN375
DATE:
DRAWN:
CHECKED: NAME
DATE:
DATE
h
NOTES Regarding Air Valves:
1.
2.
3.
4.
All options posed here are non trafficable.
Air valves shall not be located in trafficable locations.
Air valve and riser pipe (from main) should be sized
according to the orifice cross sectional area(s), not the
bore area of the air valve.
Where an air valve > DN200 is calculated as required,
multiple smaller valves shall be installed on a manifold
instead (ie. 2 x DN200 should be used instead of a single
DN300) and the shaft designed accordingly.
Air valve marking arrangements only required where L
type hydrant covers are used.
CWW
SEWL
SEWL
YVW
YVW
4
unusually deep (> 1300mm) &/or an above
ground air valve is to be constructed.
· 'd' and 'h' should be > 0.5 x 'D'
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
G
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.
MAIN CONNECTION DETAILS
NOT TO SCALE
MRWA WATER SUPPLY STANDARDS
H
APPROVED: NAME
CWW
F
d
· Only for use in conjunction with Figure
· Only possible where the water main is
MELBOURNE RETAIL WATER AGENCIES
DESIGNED:
E
D, E or F.
1. Use where not SEW and:
1.1. The required air valve is small enough to fit within the
cover, and
1.2. For YVW air valves, or
1.3. 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.
305-D.
1. Isolation valve must be operable from surface if 600Ø shaft is used to house the air valve.
4. Minimise pit depth, step irons required for 1070Ø shaft > 1000 deep.
2. Approved 600Ø sewer maintenance shaft and cover preferred for air valves less than 300Ø. 5. Lay shaft and supports on compacted 20mm single sized crushed rock (self draining) to 95%
rd density.
3. Approved 1070Ø sewer access shaft shall be used for air valves greater than 300 in width.
This crushed rock should extent to the embedment layer, extend the full width of the trench
600 neck shall be located over clear ground (not over the air valve).
and to a distance of 1m from fitting in both directions.
REV
FIGURE 305-J: INVERTED SCOUR TEE
CONNECTION FOR MAINS >DN225
· Only for use in conjunction with Figures 305-A,
FIGURE 305-E: ABOVE GROUND LARGER AIR VALVES
NOTES Regarding Details D & E:
H
d
h
M12, 316ss bolts
6mm thick, 60mm wide
316ss strap
Connect to nearby
drain if practical
hydrant / air valve and the offtake tee.
FIGURE 305-G: STANDARD IN
LINE CONNECTION
Compacted crushed rock as
per MRWA-W-201 (Type F)
OFFSET ONLY
PADLOCK
IN LINE OR
OFFSET
D
Only for use in conjunction with Figures
305-A, B, C or D.
Compacted crushed rock as
per MRWA-W-201 (Type F)
OFFSET ONLY
E
· Only for use in conjunction with Figure 305-A.
· A valve is usually not fitted between the
FSL
>300
>100
300 x 300 x 50 (4 No.) approved
recycled plastic or concrete support
>300
>100
Lilac (if NDW)
70
500 to
1000
100 to 250
D
C
Black
100 to 250
<600 if
Practical
FSL
300 x 300 x 50 (4 No.) approved
recycled plastic or concrete support
>300
A
Compacted crushed rock as per
MRWA-W-201 (Type F / R)
FIGURE 305-B: BELOW GROUND ALL IN 1 VALVED HYDRANT
FIGURE 305-A: BELOW GROUND HYDRANT
· This is the standard for retic pipelines. · Trafficable or non-trafficable.
· Only spring hydrants permitted.
· Refer to MRWA-W-303 for details.
4.
Refer to MRWA-W-303 for surface
cover arrangements for hydrants.
Refer Table 301-B for hydrant marking
arrangements.
Hydrants are not to be used in low
pressure applications (< 20 m),
eg: some irrigation only NDW systems.
Spring hydrants are not automatic and
require manual opening to allow air
ingress and egress.
B
IN LINE ONLY
IN LINE
1.
100 to 250
Di riser length to
suit
12
NOTES on Figures 305-A, B & C:
FSL
SPACER
OFFSET
11
600 CLASS B/D COVER
<600 if
Practical
B
10
DATE
5
HYDRANT AND AIR VALVE
FITTING DETAILS
6
7
8
9
10
MRWA-W-305
ISSUED 2012
11
REVISION NO. 3
12
1
2
3
4
5
GASKET
WASHER
7
8
9
Overlap protective
tape over primer
by min 150
Overlap primer
over pipe coating
by min 200
MASTIC
FILLER
B
PRIMER
MASTIC
FILLER
2 x MS, or 2 x MS, or
2 x DI
2 x DI
flanges
flanges
ACCEPTABLE
PIPE COATING
11
Insulation top hat
(if required- see
note B)
WASHER
Corrosion protection
tape
OVER WRAPPING
TAPE
10
Corrosion protection
tape
Fill gap between raised flange faces
with primer or mastic
A
Overlap protective tape over
primer by min 150
6
12
Fill gap between raised flange
faces with primer or mastic
Over wrapping
tape
A
PRIMER
Overlap primer over
pipe coating by min
200
GASKET
MASTIC
FILLER
MASTIC
FILLER
B
FBE COATED DI FITTING
UNCOATED MSCL OR DI FLANGE
FIGURE 306A-A: CORROSION PROTECTION OF 2 x DI or 2 x MS UNCOATED FLANGES
CEMENT MORTAR REINSTATEMENT
5 mm
FIGURE 306A-B: CORROSION PROTECTION OF AN UNCOATED FLANGE CONNECTED TO A COATED FITTING
NOTES on Corrosion Protection:
C
D
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 is
required.
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 holes
shall 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 high
integrity 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.
E.
F.
G.
H.
I.
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.
Bare, bitumen coated or painted surfaces are not acceptable coatings. These surfaces will be referred to as uncoated.
All corrosion protection products shall be as per the water agency product catalogue.
Products from a single manufacturer shall be used to ensure compatibility of products. All products shall be applied as
per the manufacturers instructions.
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.
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.
Choose one of Mastic
or Cap plus mastic / gel
SS backing
ring
FBE
coated
flange
Puddle Flange Thickness
Extrusion Weld (full
circumference on both sides)
Fbe coated di
fittings
Double thickness of low
density PE sleeve
E
Anticorrosion gel
or mastic
SS bolt, nut
& washers
PE
stub
flange
PVC heavy duty
"duct tape"
TABLE 306A-A: PE PUDDLE FLANGE DIMENSIONS FOR PE MAINS
F
FIGURE 306A-D: CORROSION PROTECTION FOR GALVANISED BOLTS WITH COATED FLANGES
A.
B.
NOTES Regarding Galvanised Fastener Protection & Corrosive Ground Conditions:
C.
D.
G
E.
All flanges are to be raised face type.
Steel flanges shall be welded in an ISO9001 accredited workshop.
No on site welding of steel flanges is permitted.
For flange, gasket and fastening details, refer to MRWA-W-306B.
Corrosion protection is not required for concrete encased puddle
flanges.
Any FBE coated fittings which are damaged to the point where bare
metal is exposed shall be repaired with a repair product approved by the
manufacturer.
Otherwise it shall be quarantined and not installed.
·
·
·
·
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.
A.
B.
C.
D.
E.
F.
REV
DESCRIPTION
1
DATE
2
APPROVED
3
DATE:
DRAWN:
CHECKED: NAME
DATE:
DATE
CWW
SEWL
SEWL
YVW
YVW
4
F
G
NOT TO SCALE
MRWA WATER SUPPLY STANDARDS
H
APPROVED: NAME
CWW
FLANGE THICKNESS (mm)
30
40
FLANGE OD (mm)
PIPE OD +100
PIPE OD + (2 x PIPE WALL THICKNESS)
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.
All Fasteners (gal or SS) shall be sleeve wrapped to prevent contact with soil.
Gal fasteners in the open air (not buried) do not require additional corrosion protection.
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.
Use low density polyethylene sleeve in accordance with AS 3680. Wrap so that any seem is located at top of the pipe.
Ensure that all sleeving between the duct tape on one side and that on the other is not perforated in any way.
Ensure flanges and bolts are clean and free of dirt of contaminants prior to being sleeved.
DESIGNED:
PIPE PE MAIN OUTSIDE DIAMETER
<DN280
>DN315
PIPE PE MAIN OUTSIDE DIAMETER
<DN500
>DN560
NOTES Regarding Fused PE Puddle Flanges:
NOTES Regarding Sleeving:
MELBOURNE RETAIL WATER AGENCIES
H
E
FIGURE 306A-E: PE PUDDLE FLANGES
Plastic sealing cap
(optional)
MASTIC
Puddle Flange
Outside Diameter
PE pipe
FIGURE 306A-C: PE STUB FLANGE WITH SS FASTENERS
GENERAL NOTES:
C
D
Gasket
PVC heavy
duty "duct
tape"
J. Step 3: Mastic- Apply mastic to create a gradual and smooth transition from the pipe to the outer diameter of the
flange. Application around bolt heads only is not acceptable. Apply mastic by hand, ensuring no significant voids are
present.
K. Step 4: Protective Tape- Apply petrolatum, butyl or bitumen tape system continuously with 55% overlap, stretching
and 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 using
a 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 of
drawing MRWA-W-400.
DATE
MRWA-W-306A
FLANGE ARRANGEMENTS
ISSUED 2012
5
6
7
8
9
10
11
REVISION NO. 3
12
1
2
3
4
5
TABLE 306B- A: CLASS 16 (PN16) FLANGE & FASTENING DATA
100
215
178
108
4
18
M16
75
20
70
50
40
20
11
PIPE NOMINAL SIZE
FLANGE OUTSIDE DIAMETER
PITCH CIRCLE DIAMETER
GASKET INTERNAL DIAMETER
NUMBER OF HOLES / BOLTS
DIAMETER OF HOLES
BOLT SIZE
LENGTH OF BOLTS (mm)
BOLT TENSION (kN)
TORQUE (LIGHTLY OILED GAL)- Nm
TORQUE (WELL LUBRICATED)
TORQUE (PTFE or INSULATED)- Nm
DI FLANGE THICKNESS (mm)
STEEL FLANGE THICKNESS (mm)
150
280
235
161
8
18
M16
75
20
70
50
40
23
11
225
370
324
241
8
18
M16
75
25
90
60
50
24
15
300
455
406
325
12
22
M20
100
35
160
110
80
30
23
375
550
495
406
12
26
M24
100
50
270
180
145
33
30
450
640
584
485
12
26
M24
120
55
290
200
160
33
30
600
825
756
641
16
30
M27
130
70
420
290
230
42
48
6
750
995
927
796
20
33
M30
130
80
530
380
290
47
48
B
100
230
191
108
8
18
M16
90
50
180
120
96
22
24
150
305
260
161
12
22
M20
90
80
350
240
190
27
31
225
405
356
241
12
26
M24
120
115
610
420
330
34
38
300
490
438
325
16
26
M24
120
115
610
420
330
38
38
375
580
521
406
16
26
M24
130
150
900
610
430
42
48
450
675
610
485
20
33
M30
150
180
1190
810
520
46
58
600
850
781
641
24
36
M33
180
230
1670
1140
745
54
68
8
750
1015
940
796
28
36
M33
180
230
1670
1140
830
59
-
D
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 tensioner
shall be used.
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.
1
1
4
1
8
5
E
4
3
3
10
12
6
4
4
3
6
14
4 BOLTS
2
9
8 BOLTS
1
5
9
13
2
12 BOLTS
2
15
11
16 BOLTS
FIGURE 306B- A: BOLT TIGHTENING SEQUENCE
F
Bolted on mechanical
puddle flange
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 (MoS2) coated nuts to reduce seizing, galling and the
tightening friction of the nut on the washer (thus reducing the tightening torque required).
TABLE 306B-C: PE MAIN CONNECTION TO CLASS 16 FLANGES (PN16)
FLANGE PE
OD PCD ADAPTOR
110
125
128 215 178 NOT REQUIRED
180
180
195 280 235 NOT REQUIRED
225
SPECIAL ORDER 370 324 225 to 280, or 225 to 315
280
280
300 405 356 NOT REQUIRED
315
315
345 455 406 315 to 355, or 315 to 400
SPECIAL ORDER STUB FLANGE + BACKING RING + ADAPTOR REQUIRED
450
450
480 640 584 450 to 560, or 450 to 630
NOM DI
PE STUB
FITTING SIZE SIZE
100
150
225
250 *
300 #
375
450
PE BACKING RING
SIZE
ID
B
C
D
PE EQUIVALENT
DNPE SIZE(S) ^
125
180
280 or 315
N/A
355 or 400
400 or 500
560 or 630
Apply torque according to the size of the
valve flange (Refer Tables 306B-A & B)
E
SPECIAL ORDER BACKING RING
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
F
DN225PE STUB FLANGE
· 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
DN300
325
VALVE
galvanised flange bolts in Table 306B-A (PN16) or Table 306B- B (PN35).
256
315
DN315PE STUB
FLANGE,
BACKING RING
AND PIPE
DN225 VALVE
241
205
DN315PE TO
DN315PE
DN225PE
315
PIPE
REDUCER
225
FIGURE 306B-B: MECHANICAL PUDDLE FLANGE CONNECTION
G
A
NOTES Regarding Gasket and Fastener Material Requirements:
NOTES Regarding Mechanical Flange Attachment:
Ductile iron or
PE pipe
12
^ 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.
7
6
11
Notes Regarding Table 306B-C:
3
10
11
7
16
8
5
2
7
12
8
10
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).
C
Flanged Joint Installation Guidelines:
9
NOTES on Tables 306B- A & B:
TABLE 306B- B: CLASS 35 (PN35) FLANGE & FASTENING DATA
PIPE NOMINAL SIZE
FLANGE OUTSIDE DIAMETER
PITCH CIRCLE DIAMETER
GASKET INTERNAL DIAMETER
NUMBER OF HOLES / BOLTS
DIAMETER OF HOLES
BOLT SIZE
LENGTH OF BOLTS (mm)
BOLT TENSION (kN)
TORQUE (LIGHTLY OILED GAL)- Nm
TORQUE (WELL LUBRICATED)
TORQUE (PTFE or INSULATED)- Nm
DI FLANGE THICKNESS (mm)
STEEL FLANGE THICKNESS (mm)
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.
A
7
G
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).
FIGURE 306B-C: ALTERNATIVE DN315PE VALVE ARRANGEMENTS
· Where there are more than 16 bolts, the same principle as applied in the 16 bolt flange pattern should be utilised.
MELBOURNE RETAIL WATER AGENCIES
DESIGNED:
K. DAWSON
3
PE PUDDLE FLANGES. TORQUE AMENDMENTS
01/12/16 RJ / CP / JT
DRAWN:
R. JAGGER
CHECKED: NAME
2
PUBLISHED FIRST ISSUE
04/04/12 K.DAWSON
X CWW
R.JAGGER
04/04/12
X CWW
1
PRE PUBLISHED DRAFT FOR COMMENT
12/07/11 K.DAWSON
X SEWL
C.PAXMAN
04/04/12
X SEWL
G.REYNOLDS
04/04/12
X YVW
S. TAN
04/04/12
X YVW
A.COSHAM
04/04/12
H
REV
DESCRIPTION
1
DATE
2
APPROVED
3
MRWA WATER SUPPLY STANDARDS
11/03/2011
DATE: 11/03/2011
DATE:
DATE
4
APPROVED: NAME
H
DATE
FLANGE DETAILS AND
FLANGE FASTENING REQUIREMENTS
R.CARRUTHERS 04/04/12
5
NOT TO SCALE
MRWA-W-306B
ISSUED 2012
6
7
8
9
10
11
REVISION NO. 3
12
1
2
3
4
5
6
7
9
10
11
12
Valve surface details
(refer MRWA-W-302)
Valve surface arrangements
as per MRWA-W-302
A
8
A
FSL
FSL
Downstream manual
discharge control valve
(if required. Ref note D)
GATE VALVE
Lugged wafer check valve required if discharging to a
Tanker Connection Point (ref Fig 307-C) or a Storm
Water drain or pit (ie: discharges to waterways and
discharge pits have a flap gate valve at the outlet
already).
B
Tee restraint not required
where discharge main is
restrained.
REFER TO SEWERAGE STANDARD
FIGURES MRWA-S-404-D to H FOR
OUTLET DESIGN DETAILS
B
DISCHARGE PIPE ON FALLING GRADE
Refer
MRWA-W-204
and 205
FIGURE 307-A: SCOUR CONNECTION
2 to 5m FROM OUTLET STRUCTURE
FIGURE 307-C: DISCHARGE TO WETLANDS OR WATERWAYS
C
C
Standard 600 shaft (concrete or PP).
If PP, install as per Fig 306C(i) from
sewerage standards
Design and construct pit as
a Maintenance Hole in
accordance with MRWA
Sewerage standards
Valve surface details
as per MRWA-W-302
600 CLASS D COVER (if 600 shaft)
750 CLASS D COVER (if 1070 shaft)
FSL
FSL
50 to 150
Spindle extension to
surface arrangement
as per MRWA-W-302
<600 if
Practical
D
Flap gate
1 to 5 m
Downstream manual
discharge control valve
(if required. Ref note
D)
Hole in handle to
enable connection
of operating rod
~30
>
150
<30
Non-return
flap
Finish
mortar
flush with
pit wall
Roughen pipe
and seal with
epoxy mortar
> 2m
4 of 300 x 300 x 50
Approved hardwood, recycled
plastic or concrete support
>400
>100
D
Compacted
Embedment
30°
E
Ball or butterfly
discharge control
valve.
20mm bleed
with 316 SS
ball valve
E
FIGURE 307-D: TANKER CONNECTION POINT
NOTES Regarding Tanker Connection Points:
Refer
MRWA-W-204
and 205
STORAGE
VOLUME
1. This arrangement is an alternative to Figure 307-B.
It is preferred when the scour water removal plan indicates a single tanker truck
could empty the isolated section of main with in the required time (refer to table 8.3
of 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.
F
5. Cover should lie 25mm above the surrounding natural surface level (not to
protrude 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 be
sized and dimensioned to enable this.
7. Quick connector is a Bauer couplings for CWW.
F
FIGURE 307-B: DISCHARGE PIT DETAIL
NOTES Regarding Discharge Pits:
1.
2.
To be used on NDW mains only. Locate nearby >DN300 sewerage main maintenance structures if practical.
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 drainage
becomes available.
Use minimum 1050 manhole design. Consider larger manholes for larger mains.
Construct pit in accordance with WSA 02- cast in situ manholes.
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 pit
contents to a sewer, or the number of eductor truck loads required to empty the main.
1
Pit storage shall be no less than 50 of the water main shutoff volume being removed unless the pit is within 50m of a nearby > DN300 sewer.
Water main shutoff volume must be < 300m³.
3.
4.
5.
G
6.
7.
GENERAL NOTES:
A.
B.
C.
D.
Scour valve and pipework to provide required main drainage time (refer table 8.3 of WSA 03- MRWA edition).
Discharge to drains and water ways is preferred for drinking water.
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.
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 discharge
control.
Unreinforced concrete to be N20 and reinforced concrete N25.
Connections into drains shall be undertaken as per the requirements of the relevant drainage authority.
Discharge to wetlands, creeks and drains only permitted for drinking water and treated storm water.
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).
E.
F.
G.
H.
MELBOURNE RETAIL WATER AGENCIES
H
REV
DESCRIPTION
1
DATE
2
APPROVED
3
DESIGNED:
DATE:
DRAWN:
CHECKED: NAME
DATE:
DATE
CWW
SEWL
SEWL
YVW
YVW
4
NOT TO SCALE
MRWA WATER SUPPLY STANDARDS
H
APPROVED: NAME
CWW
G
DATE
5
SCOUR ARRANGEMENTS FOR
> DN300 MAINS
6
7
8
9
10
MRWA-W-307
ISSUED 2012
11
REVISION NO. 3
12
1
2
3
4
<10 CONNECTIONS
A
5
6
7
> 2m
10
11
TIMBER / RECYCLED BLOCKS
iii)
12
NOTES Regarding Valve & Hydrant Requirements:
a. Permanent valve(s) are generally required at temporary c.
dead ends as per Option ii) to v).
This is to ensure that the minimum number of customers
d.
are affected when later works are completed.
If practicable, <10 existing connections shall be designed
Preferred where there are >10 connections
into a SOB which is to be completed at a later date (as
between the next valve back and the end of line.
indicated in Option i).
Maintain FL-FL piece to keep distance from
b. When swabbing downhill is to occur, permanent valves are
anchor.
required at the down hill end of the mains to control the
swab and keep the main full once swabbing is complete.
Preferred where a hydrant is also
required for on going operational
or fire fighting reasons.
ii)
B
9
Acceptable where a valve is better
set back from the end of the main
(ie: at a splay corner) and there are
< 10 connections in between.
i)
(REFER FIGURE 308-E)
8
With respect to Option i), the undisturbed ground behind
the washout shall not be disturbed for a distance of at
least 2 meters.
Where washouts on new mains are to be placed hard up
against a blank plate at the end of a previous stage
(Options ii, iii & iv), multiple blocks will make it easier to
remove the temporary washout, and in the case of Options
ii & iii, the increased separation will make it easier to
attach the standpipes without them clashing.
B
(REFER FIG 308-D)
BLANK
PLATES
A
Preferred where a hydrant is also required for
on going operational or fire fighting reasons.
iv)
v)
Preferred where a larger connection is required
to facilitate swabbing at 0.5 to 1.0 m/s. Refer
Figure 308-E and accompanying notes.
TEMPORARY ARRANGEMENT NOT REQUIRED
FIGURE 308-A: END OF PRIOR
STAGE ARRANGEMENTS
C
(REFER FIGURE 308-F)
FIGURE 308-B: TEMPORARY
CHARGING CONNECTIONS
C
FIGURE 308-C: PERMANENT CONNECTIONS
FIGURE 308-D: EXAMPLE COMPLETED CONNECTION
> VALUE IN TABLE 308-A
SWAB BEING
DISCHARGED
Pressure
test point
METER
PE pipe, bolted or butt welded.
Flexible lay flat PE sleeve /
hose may be acceptable for
<DN150 mains where safe to
do so.
D
Testable single
detector check
valve (or better)
Isolation valve (for
pressure testing)
Chlorine
injection
tapping
SWAB
D
Connecting
hose
STANDPIPES
E
A.
B.
C.
D.
F
PRIOR
CONSTRUCTION
MAIN SIZE
(DN)
100 OR 125PE
150 OR 18OPE
225 OR 280PE
300 OR 355PE
375 OR 450PE
450 OR 560PE
600
750
Limit of prior construction.
Ground must be left undisturbed to
this point when extension
construction begins.
LATTER
CONSTRUCTION
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
SWAB
SWAB DISCHARGE
HYDRANT HYDRANT HYDRANT
DIAMETER LENGTH CONTROL UNIT 1 FLOW
2 FLOW
3 FLOW
(mm)
(mm)
LENGTH (mm) (l/s)
(l/s)
(l/s)
200
NOT REQUIRED
300
5
250
10
350
NOT REQUIRED
300
20
400
1500
400
1600
20
500
20
475
1800
18
18
550
18
550
2000
26
26
650
26
750
2600
900
SITE SPECIFIC PLAN REQUIRED
900
3200
SITE SPECIFIC PLAN REQUIRED
1050
(Joints and pipe information not shown for clarity)
End of prior stage arrangements
Temporary chlorination arrangement
Permanent arrangement
ADD TEMPORARY END OF LINE ARRANGEMENT
1/12/16 RJ / CP / JT
2
PUBLISHED FIRST ISSUE
04/04/12 R. JAGGER
X CWW
C. RIVETTE
04/04/12
X CWW
1
PRE PUBLISHED DRAFT FOR COMMENT
12/07/11 R. JAGGER
X SEWL
C.PAXMAN
04/04/12
X SEWL
G.REYNOLDS
04/04/12
X YVW
K.DAWSON
04/04/12
X YVW
A.COSHAM
04/04/12
DESCRIPTION
1
DATE
2
APPROVED
3
DATE
4
APPROVED: NAME
· Chlorination and water quality compliance as
per WSA 03-2010 / MRWA Specification 04-02.
G
· Concrete thrust restraints as per MRWA-W-204
and 205A or 205B.
· Surface covers as per MRWA-W-302 & 303.
NOT TO SCALE
H
DATE
MRWA-W-308
SWABBING, CHLORINATION AND
EXTENDING MAINS
R.CARRUTHERS 04/04/12
5
indicated in Figure 308-F) between the
permanent and temporary hydrants to
facilitate charging and chlorination.
· Refer to MRWA-W-105 for assembly details.
· Where valves cannot be offset, refer to
MRWA-W-304A & B for details.
F
KEY REFERENCES:
MRWA WATER SUPPLY STANDARDS
20/01/2011
DATE: 20/01/2011
DATE:
3
the main is close to the maximum spacing (ie: > 2/3rds of the
maximum spacing in Table 300-B), the end of line valve and
hydrant arrangement shall be permanent (refer Figure 308-F
and Figure 308-H).
· Where the distance back to the last permanent divide valve on
the main is substantially less than the maximum spacing, the
end of line valve and hydrant arrangement shall be temporary
(refer Figure 308-G).
· Temporary end of line assemblies shall be sized as per Table
106-D.
· Components shown in red are temporary.
· Connect chlorination hose & fittings (as
FIGURE 308-H: PERMANENT END OF LINE ASSEMBLY
CWW & YVW- >DN300 MAINS.
SEW- >DN450 MAINS
R. JAGGER
downstream system successfully passes its pressure test.
· Where the distance back to the last permanent divide valve on
NOTES Regarding Fig 308-H:
BLANK
PLATES
DRAWN:
R. JAGGER
CHECKED: NAME
REV
DN225 mains, a temporary hose connection between the
hydrants will be unable to push the swab with adequate
velocity.
· In such cases, swabbing flows will need to be delivered though
the operation of an in line valve.
· This valve (and any bypass valve) shall successfully pass a
pressure test to the new system test pressure prior to
installation (to ensure it does not leak super chlorinated water
back into the in service main).
· Install these valves closed and do not operate them until the
BLANK PLATE
DUCKFOOT BEND &
HYDRANT
MELBOURNE RETAIL WATER AGENCIES
H
E
NOTES Regarding Large Main End of Line Arrangements:
· For > DN300 and in lower pressure (static P < 400 KPa)
FLOW REQUIRED TO ACHIEVE A
SWABBING VELOCITY OF 0.5 m/s
DESIGNED:
START OF LATTER
CONSTRUCTION
TEMPORARY CONSTRUCTION
(installed with prior construction)
FIGURE 308-G: TEMPORARY END OF LINE ASSEMBLY ON >DN225 MAINS
(known as "CHLORINATION ASSEMBLY")
E. Single swabs are acceptable for <DN200
mains. (DN100 & 150 swabs are under review)
swabbed unless the main contains butterfly
Two swabs are required for each swabbing run
divide valves.
on mains > DN200.
Swabbing is to be undertaken in accordance
F. Swab discharge drinking water may only be
with the swabbing plan (authorised by the
discharged to open land where it will pond, to a
superintendent) to a velocity of 0.5 to 1.0 m/s.
tanker truck or to a storm water system which
Swabs are single use only, manufactured from
has adequate silt containment and
polyurethane foam to AS2281 & AS4020.
environmental controls.
Swabs are to be marked with the entry point
property address using a permanent marker.
This is to aid swab reconciliation.
All mains >DN100 > 15m long shall be
TABLE 308-A: SWABBING REQUIREMENTS
G
Swab. Inserted just prior
to recommencement of
latter construction
FIGURE 308-E: END OF LINE WITH PERMANENT VALVE
AND SWAB DISCHARGE CONTROL ARRANGEMENT
NOTES Regarding Swabbing:
ISSUED 2012
6
7
8
9
10
11
REVISION NO. 3
12