HomeMy WebLinkAbout350.3PLAN
ELEVATION
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DC
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6" MIN 6" MIN
12"
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24"
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12"
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PUBLIC WORKS
DEPARTMENT
APPROVED:
DATEMartin Pastucha
Public Works Administrator
3" TO 10" DCDA
VAULT INSTALLATION
FIRE SPRINKLER SYSTEMS
STD. PLAN - 350.3 Sht. 1 of 2
6/28/2023
MATERIALS
NOTES:
1.THE DCDA MUST BE LISTED ON THE LATEST VERSION OF "BACKFLOW ASSEMBLIES APPROVED FOR INSTALLATION IN WASHINGTON STATE",
PUBLISHED BY THE STATE OF WASHINGTON DEPARTMENT OF HEALTH.
2.THE DCDA MUST BE TESTED BY A WASHINGTON STATE CERTIFIED BACKFLOW ASSEMBLY TESTER UPON INSTALLATION AND ANNUALLY
THEREAFTER. ASSEMBLY TO BE MAINTAINED BY PROPERTY OWNER. A COPY OF THE TEST REPORT SHALL BE SENT TO THE CITY OF RENTON
WATER UTILITY CROSS CONNECTION CONTROL SPECIALIST, FAX 425-430-7207, EMAIL BACKFLOW@RENTONWA.GOV.
3.VAULTS SHALL NOT BE INSTALLED IN AREAS WITH VEHICLE TRAFFIC.
4.VAULT AND HATCH MODELS ARE PROVIDED AS REFERENCE. SHOP DRAWINGS SHALL BE SUBMITTED TO THE CITY FOR APPROVAL.
5.TEE AND GATE VALVE REQUIRED ON MAIN.
6.WHEN DCDA IS USED IN THE SAME LINE AS THE DOMESTIC BUILDING METER, THE METERED BYPASS SHALL BE OMITTED.
7.MINIMUM 2' OF LEVEL, UNOBSTRUCTED AREA AROUND HATCHES.
8.FDC TO BE LOCATED DOWNSTREAM OF DCDA. FDC LINE AND CHECK VALVE MAY BE ROUTED INSIDE THE DCDA VAULT PROVIDED THE
VAULT IS ADEQUATELY SIZED AND ALL PROVISIONS OF STD PLAN 370.2 ARE MET.
9.LONGER VALVE ASSEMBLIES MAY REQUIRE A LARGER VAULT TO MEET REQUIRED CLEARANCES. SUBMIT FOR APPROVAL.
10.EACH VALVE SHALL BE MARKED WITH MODEL NUMBER WITH DESIGNATION OF RESILIENT SEAT: SUCH AS "RS" OR "R", WHICH MUST BE
CAST, MOLDED, OR AFFIXED ONTO THE BODY OR BONNET OF THE VALVE. ALL FERROUS BODIED VALVES SHALL BE COATED WITH A
MINIMUM OF 4 MILS OF EPOXY OR EQUIVALENT POLYMERIZED COATING.
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VAULT MODEL NUMBERS
DCVA SIZE VAULT BASE PIECE CENTER PIECE TOP PIECE ACCESS HATCH
3"675-WA NO. 675-BL NO. 675-MLW NO. 675-TL-2-332P HHD-1C
4"675-WA NO. 675-BL NO. 675-MLW NO. 675-TL-2-332P HHD-1C
6"675-WA NO. 675-BL NO. 675-MLW NO. 675-TL-2-332P HHD-1C
8"687-LA NO. 687-BL NO. 687-ML NO. 687-TL-2-332P HHD-2D
10"5106-LA NO. 5106-BL NO. 5106-ML NO. 5106-TL3-332 HHD-2D
DOUBLE CHECK
DETECTOR ASSEMBLY
LINE-SIZED WASHINGTON STATE-APPROVED DCDA WITH TWO (2) RESILIENT-SEATED SHUT-OFF VALVES
AND FOUR (4) RESILIENT-SEATED TEST COCKS, DCDA SHALL BE INSTALLED EQUIDISTANT FROM THE ENDS
OF THE CONCRETE VAULT, TWO (2) VALVE SUPERVISORY SWITCHES (ONE PER VALVE) PER RRFA
REQUIREMENTS
BYPASS 3 4" DETECTOR BYPASS, ALL MATERIALS TO BE BRASS OR COPPER
BYPASS METER 3 4" AMI WATER METER WITH RADIO AND BATTERY UNIT, TO BE PROVIDED BY THE CITY
DOUBLE CHECK
VALVE ASSEMBLY
3 4" WASHINGTON STATE-APPROVED DCVA WITH TWO (2) RESILIENT-SEATED SHUT-OFF VALVES AND FOUR
(4) RESILIENT-SEATED TEST COCKS
PIPE SUPPORT ADJUSTABLE PIPE SADDLE SUPPORT, GRINNELL FIG. 264 OR EQUAL, WITH BASE, BOLTED TO FLOOR
ADAPTER RESTRAINED FLANGE ADAPTER, EBAA IRON SERIES 2100 MEGAFLANGE OR EQUAL
WATER MAIN CLASS 53 DI PIPE (PExFL) WITH RESTRAINED JOINTS
WALL FLANGE MIDSPAN PIPE RESTRAINT WITH CONCRETE BLOCKING PER STD PLAN 370.4, SEAL PIPE PENETRATIONS
WITH WATER-TIGHT GROUT
CONCRETE VAULT OLDCASTLE PRECAST VAULT, MODEL NUMBERS PER TABLE BELOW, OR EQUAL
DRAIN MINIMUM 6" PVC FLOOR DRAIN, SLOPE TO STORM DRAIN OR DAYLIGHT TO DRAINAGE DITCH WITH WIRE
MESH RODENT SCREEN AT DRAIN OUTLET, SEAL PIPE PENETRATION WITH WATER-TIGHT GROUT
ACCESS HATCH TWO LOCKING HINGED ALUMINUM DOORS, TRAFFIC-RATED, WITH SLIP-RESISTANT TREATMENT, MARKED
"WATER", LW PRODUCTS MODEL NUMBERS PER TABLE BELOW, OR EQUAL
LADDER GALVANIZED STEEL LADDER SECURED TO VAULT PER STD PLAN 370.5
GRAVEL FOUNDATION GRAVEL PER WSDOT STANDARD SPECIFICATIONS, 12" MINIMUM ALL DIRECTIONS
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PUBLIC WORKS
DEPARTMENT
APPROVED:
DATEMartin Pastucha
Public Works Administrator
STD. PLAN - 350.3 Sht. 2 of 23" TO 10" DCDA
VAULT INSTALLATION
FIRE SPRINKLER SYSTEMS 6/28/2023