Drawings for Sewer and Water - City of London

EXISTING GRADE
FORD TYPE "W" I{ABASH
DOUBLE LID COVER
(OR EOUIVALENT)
PREVENTION
PIT
ARMOR CONTROL VALVE ACCESS BOX
AND LID (OR EOUIVALENT)
WAITS DOUBLE CHECK
VALVE BACKFLOVI
PREVENTION ASSEMBLY
CURB VALVE AND
SERVICE BOX
TO IRRIGATION SYSTEM
25fÍm PEX SERVICE
( MIN. )
300nm 0F 1 gnfn SToNE AND
2o0nm AROUND BACKFLoVI PIT
EX. WAÏERMAIN
FORD PVC CYLINDER PIT SETTER
(OR EOUIVALENT}
ME]-ERED IHRIGATION SYSTEM AND BACKFLOW PREVENTION ASSEMBLY
FOR fHE PROTECTION OF ]HÊ WATER PURVÉYOB'S DISTRIBUTION SYS'TEM, ALL
IRRIGATION SYSTEIVS MUST BE METERED AND MUST IIAVE AN APPROVED BACKFLOW
PBEVENÎION ASSEMBLY THAT IS COMPATBLE WTH THE DEGREE OF HAZARD.
300nm 0F lgrlm]ST0NE ANE
2oofin AROUND METER PIT
BACKFLOW PREVENTION DEVICES SI.{ALL BE INSIALLED IN ACCORDANCE WITÞi
THE ONIARIO BUILDING CODE AND CAN /CAS-864 SEI'.ECTION AND INSTALUTION
OF-IIIE BACKFLOW PREVENTERS /MAINTEMNCE ANO FIELD TESTING OF BACKFLOW
PREVENÍEBS AND CMY OF LONDON WATER BY-{AW W€,
ALL BACKFLOW PRÉVENTION DEVICES SHALL BE INSPECIED AND IESIED AT
THÉ Ð(PENSE OF THE OWNER, UPON INSTAUÂÏON, AND THEREAFTER ANNUAI-LY, '
OB MORE OFIEN IF REQUIRED BY-THE CITY, BY PEBSONNEL APPROVED BY THE
CffI TO CARRY OUT SUCH IESTS TO DEMONS'IRATE 'THAT THE DEVICE IS IN
GOOD WORKING ORDER.
WAIER MEIER PITS ARE TO BE IN ACCORDANCE WTH 'ÍHE SECI|ON ,t41,0S.22
OF THE CITY OF LONDON STANDARD CONTRACT DOCUMENTS FOR MUNICIPAL
CONSTRUCTION PROJECTS AND THE MANUFACTURER'S RECOMMENDATIONS.
LONDON STANDARD DRAWING
METERED IRRIGATION SYSTEM AND BACKFLOW PREVENTION ASSEMBLY
DWG w-cs-71
2012-03-3011:21:11 AM