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BYPASS PIPE
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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.
2" CORP STOP
TEMPORARY BRACING
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.
2" SADDLE
DETAIL NOTES
1. AFTER TEMPORARY BYPASS IS COMPLETE,
MATERIALS:
OA BACKFLOW ASSEMBLY DCDA PER DETAIL NO.23A, POSITIONED WITHIN ACCESS HATCH TO ALLOW FOR
VERTICAL REMOVAL
CONTRACTOR TO CLOSE CORP STOP AND
Og PIPE CLASS 53 DI PIPE (PExFL OR FLxFL)
REMOVE ALL TEMPORARY PIPING AND
BRACING
O POST INDICATOR VALVE PIV BETWEEN LAST VALVE ON BACKFLOW ASSEMBLY AND FDC, IN ONE OF TWO
EX WATER MAIN
2" BRASS
POSITIONS SHOWN
OTEE TEE (PExFL)
HOT TAP CONNECTION
OE ADAPTER ADAPTER (FLxMJ)
TO EX WATER MAIN
BEND 90' BEND ( FLxFL)
gF
VALVE CHECK VALVE (FLxFL)
OFIRE DEPARTMENT FDC PER RRFA REQUIREMENTS, LOCATED DOWNSTREAM OF BACKFLOW
CONNECTION ASSEMBLY, INSTALLED ON THE SIDE OF THE VAULT WITH THE LARGEST AVAILABLE
SPACE AS SHOWN
OCONCRETE VAULT OLDCASTLE PRECAST VAULT OR EQUAL, SIZED TO ACCOMMODATE FDC, PIV, AND
CHECK VALVE INSIDE THE VAULT AND MAINTAIN REQUIRED MINIMUM CLEARANCES
OACCESS HATCH TWO LOCKING HINGED ALUMINUM DOORS, TRAFFIC- RATED, WITH SLIP RESISTANT
TREATMENT, MARKED "WATER", LW PRODUCTS OR EQUAL
OLADDER GALVANIZED STEEL LADDER SECURED TO VAULT
m
O WALL FLANGE MIDSPAN PIPE RESTRAINT WITH CONCRETE BLOCKING, SEAL PIPE PENETRATIONS
v
WITH WATER -TIGHT GROUT
E
O PIPE PENETRATION SEAL PIPE PENETRATION WITH WATER -TIGHT GROUT
ODRAIN FLOOR DRAIN, MINIMUM 6" PVC, SLOPED TO STORM SEWER OR DAYLIGHT TO
"
DRAINAGE DITCH WITH WIRE MESH RODENT SCREEN AT DRAIN OUTLET, SEAL PIPE
PENETRATION WITH WATER -TIGHT GROUT
3
OBLOCKING CONCRETE BLOCKING PER STANDARD DETAIL 2
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STANDARD DETAIL
NTS
King county
Rev. Date
06/2025
DETAIL NO.
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FIRE DEPARTMENT
==
DANID EVANS
ATEB
wNoA880CIATESiNc.
CONNECTION (FDC)
'
28
Water District No. 90
2" TEMPORARY
BYPASS SOURCE CONNECTION
KCWD90 STD DTL 28 - FIRE DEPARTMENT CONNECTION 2
NOT USED
3
NOT USED
NTS
NOT USED
8
IN COMPLIANCE WITH CITY OF RENTON STANDARDS
NTS
NTS
IT'
NOT USED 5
NOT USED6
NOT USED
7
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ARCHITIeCTURE + PLANNING + DISIGN
6211 ROOSEVELT WAY
NORTHEAST
SEATTLE, WA 98115
tel: (206) 522-3830
fax: (206) 522-2456
1932 First Ave
Suite 500
M M Seattle, WA 98101
p. 206.725.1211
f. 206.973.5344
engineering pllc www.lpdengi
PERMIT
RESUBMITTAL
No. Description Date:
6 City Comments 8/21/2025
Project Title:
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Sheet Title:
WATER DETAILS
Scale:
As indicated
Project No.:
21-12
Date :
08/21 /2025
Sheet Number:
Cm503
R-435445