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811
Utilities Underground Location Center
(ID,MT,ND,OR,WA)
TO
ME
BOXES DRAINING GRAVEL
NW 1/4 SECTION 17, TOWNSHIP 23 N, RANGE 5 W, W.M.
BA SSA NO MUL TI=FA MIL Y
NOTES:
1. ALL DOUBLE CHECK VALVE ASSEMBLIES (DCVA's) MUST BE LISTED ON LATEST LIST OF "BACKFLOW PREVENTION
ASSEMBLIES APPROVED FOR INSTALLATION IN WASHINGTON STATE", PUBLISHED BY STATE OF WASHINGTON
DEPARTMENT OF HEALTH.
2. THE OWNER/APPLICANT MUST OBTAIN A SEPARATE CITY OF RENTON PLUMBING PERMIT FOR THE INSPECTION
OF THE INSTALLATION OF THE DCVA AND PIPING. THE OWNER SHALL FURNISH, INSTALL AND MAINTAIN THE
DCVA AND ALL PIPING AND APPURTENANCES SHOWN ON THIS PLAN.
3. THE DCVA MUST BE TESTED BY A STATE CERTIFIED BACKFLOW ASSEMBLY TESTER AFTER ITS INITIAL
INSTALLATION, AFTER REPAIRS AND ANNUALLY THEREAFTER AT OWNER'S EXPENSE. A COPY OF THE TEST
REPORT SHALL BE SENT OR FAXED TO CITY OF RENTON WATER UTILITY ENGINEERING DEPT., ATTN: WATER
UTILITY CROSS —CONNECTION CONTROL SPECIALIST, FAX NO. 425-430-7241.
4. DCVA AND METER BOX SHALL BE LOCATED ON PRIVATE PROPERTY AND AS NEAR AS POSSIBLE TO THE
WATER METER.
Y 34" TO 2" DOUBLE CHECK VALVE STD. PLAN — 340.8
e PUBLIC WORKS ASSEMBLY FOR IRRIGATION OR
- DEPARTMENT RESIDENTIAL FIRE SPRINKLER
MARCH 2O10
7J
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I M
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d d O d
p d
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6" MIN
I _I 12" G M
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6r' BMIN MIN
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NOTES:
1.
WHERE PIV IS LOCATED INSIDE THE VAULT, THE VAULT LID SHALL BE CORE DRILLED WITH LINK SEAL OR GROUT TO SEAL THE PIPE
PENETRATION. ALTERNATIVE
PIV LOCATION SHALL BE APPROVED BY THE FIRE MARSHAL.
2.
MINIMUM CLEARANCE OF 6" SHALL BE MAINTAINED BETWEEN VALVES, FITTINGS, AND VAULT WALL.
3.
ALL PIPE JOINTS SHALL BE
RESTRAINED AND CONCRETE BLOCKING IS REQUIRED AT CHANGES IN DIRECTION.
4.
CORE DRILL (O.D. +2") CONCRETE
VAULT IF KNOCK -OUTS ARE NOT PROVIDED.
MATERIALS
OA
BACKFLOW ASSEMBLY
DCDA PER STD PLAN 350.3, POSITIONED WITHIN ACCESS HATCH TO ALLOW FOR VERTICAL REMOVAL
OB
PIPE
CLASS 53 DI PIPE (PExFL OR FLxFL)
OC
POST INDICATOR VALVE
PIV BETWEEN LAST VALVE ON BACKFLOW ASSEMBLY AND FDC, IN ONE OF TWO POSITIONS SHOWN
OD
TEE
TEE (FLxFL)
OE
ADAPTER
ADAPTER (FLxMJ)
OF
BEND
90° BEND (FLxFL)
OG
VALVE
CHECK VALVE (FLxFL)
OFIRE
DEPARTMENT
FDC PER RRFA REQUIREMENTS, LOCATED DOWNSTREAM OF BACKFLOW ASSEMBLY, INSTALLED ON THE SIDE
CONNECTION
OF THE VAULT WITH THE LARGEST AVAILABLE SPACE AS SHOWN
OI
CONCRETE VAULT
OLDCASTLE PRECAST VAULT OR EQUAL, SIZED TO ACCOMMODATE FDC, PIV, AND CHECK VALVE INSIDE THE
VAULT AND MAINTAIN REQUIRED MINIMUM CLEARANCES
TWO LOCKING HINGED ALUMINUM DOORS, TRAFFIC -RATED, WITH SLIP RESISTANT TREATMENT, MARKED
JO
ACCESS HATCH
"WATER", LW PRODUCTS OR EQUAL
OK
LADDER
GALVANIZED STEEL LADDER SECURED TO VAULT PER STD PLAN 370.5
OL
WALL FLANGE
MIDSPAN PIPE RESTRAINT WITH CONCRETE BLOCKING PER STD PLAN 370.4, SEAL PIPE PENETRATIONS WITH
WATER -TIGHT GROUT
OM
PIPE PENETRATION
SEAL PIPE PENETRATION WITH WATER -TIGHT GROUT
FLOOR DRAIN, MINIMUM 6" PVC, SLOPED TO STORM SEWER OR DAYLIGHT TO DRAINAGE DITCH WITH WIRE
ON
DRAIN
MESH RODENT SCREEN AT DRAIN OUTLET, SEAL PIPE PENETRATION WITH WATER -TIGHT GROUT
OO
BLOCKING
CONCRETE BLOCKING PER STD PLAN 330.1
0 PUBLIC WORKS FDC AND CHECK VALVE
DEPARTMENT ROUTED THROUGH
BACKFLOW ASSEMBLY VAULT
D.R. STRONG
CONSUL TING ENGINEERS
ENGINEERS PLANNERS SURVEYORS
620 - 7th AVENUE KIRKLAND, WA 98033
0425.8273063 F425.827.2423
1
CITY COMMENTS O4.16.21
YLP
105.24.24
YLP
SURVEYED:
DJC
2
CITY COMMENTS 7.3.24
YLP
08.23.24
YLP
DESIGNED:
YLP
3
CITY COMMENTS 9.10.24
YLP
09.19.24
YLP
DRAWN:
GLB
CHECKED:
YLP
N0.
REVISION
BY
I DATE
APPR
APPROVE
STD. PLAN - 370.3
Works Ad,mistr,tor
SCALE:
DATE
AS NOTED
ONE INCH
AT FULL SCALE
IF NOT ONE INCH
SCALE ACCORDINGLY
OA
WALL FLANGE
OB
BLOCKING
OC
PIPE PENETRATION
OD
GRAVEL
DRnGII F
24"
MIN
p
•
H
O
N
U
MIDSPAN PIPE RESTRAINT, EBAA IRON SERIES 110OSDB MEGALUG OR EQUAL, WRAP WITH POLYETHYLENE
ENCASEMENT PRIOR TO PLACEMENT OF CONCRETE BLOCKING
CONCRETE THRUST BLOCKING, CAST -IN -PLACE CONCRETE (MINIMUM 3,000 PSI), TO BE SIZED BY DESIGN
ENGINEER (MINIMUM 24"x24"x6")
CORE DRILL (O.D. +2") VAULT IF KNOCKOUTS ARE NOT PROVIDED, SEAL PIPE PENETRATION WITH
WATER -TIGHT GROUT
FOUNDATION GRAVEL PER WSDOT STANDARD SPECIFICATIONS, 12" MINIMUM ALL DIRECTIONS
PUBLIC WORKS CONCRETE BLOCKING
DEPARTMENT ADJACENT TO VAULT
VERTICAL: NAVD 1988
HORIZONTAL: NAD 1983/1991
QATUM
•
C TY OF
RENTON
U'R
Planning/Building/Public Works Dept.
STD. PLAN - 370.4
N.=t,rh.
... Adm s-, DATE
W-417608
R-417615
a
LL
IN COMPLIANCE WITH CITY OF RENTON STANDARDS
J
[DEVELOPMENT ENGINEERING
Michael Sippo 10/07/2024
0:1 O
WATER UTILITY } z
ABDOUL GAFOUR 10/07/2024 <�^
CV )
DATE: v n
BASSANO MULTI -FAMILY 11.2O.20 m
STANDARD WATER DETAILS AND NOTES FIELD
PAGE:
117 WELLS AVENUE S C15
RENTON, WASHINGTON 98057 SHEET: OF:
15 20
DRS PROJECT NO. 20070