Table Of Content

UNIFORM U N I PLUMBING CODE F O R of Abu Dhabi Emirate M P L U An Environmental Guide for Water Supply and Sanitation M B I N G C O D E o f A b u D h a b i E m PO Box: 45553, Abu Dhabi, United Arab Emirates i r Tel:+971-2- 4454777; Fax:+971-2- 4463339 a t Website: www.ead.ae e UNIFORM PLIMBING CODE_DEC 09_PLC_SPINE_ CMYK _L8 plumbing introductions_L8 11/21/09 9:04 PM Page 4 Acknowledgments Environment Agency – Abu Dhabi (EAD) is grateful for the valuable contribution of the following stakeholder and their comments during the workshops or on the draft version of this code as well as for providing invaluable data. Those stakeholders are: 1. Department of Municipal Affairs (DMA) 2. Urban Planning Council (UPC) 3. Abu Dhabi Water and Electricity Authority (ADWEA) 4.Regulation and Supervision Bureau (RSB) 5. Town Planning Department (TPD) 6. Abu Dhabi Sewerage Services Company (ADSSC) 7. Abu Dhabi Distribution Company (ADDC) 8. Al Ain Distribution Company (AADC) Contributors 1. Environment Agency - Abu Dhabi HE Mr. Majid Ali Al Mansouri Secretary General Dr. Mahmood Y. Abdelraheem Adviser Dr. Ahmed K. Bashir Acting Director, Education and Awareness Sector Dr. Mohamed A. Dawoud Manager, Water Resources Team 2. IAPMO Group Mr. GP Russ Chaney Ms. Lynn Simnick Mr. Allen Inlow Copyright © 2009 Environmental Agency -Abu Dhabi. All Rights Reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, electrostatic, magnetic tape, mechanical, photocopying, recording, scanning or otherwise, without permission in writing from the publisher. ISBN978-9948-408-40-6 Designed and produced by Environment Agency-Abu Dhabi P.O. Box 45553, Abu Dhabi United Arab Emirates Tel: +971-2-4454777 Fax: +971-2-4463339 Website: www.ead.ae Front End Paper-2_Uniform Plimbing Code plumbing introductions_L8 11/21/09 11:04 PM Page 3 UNIFORM PLUMBING CCOODDEE of Abu Dhabi Emirate An Environmental Guide for Water Supply and Sanitation 2 0 0 9 PO Box: 45553, Abu Dhabi, United Arab Emirates Tel:+971-2- 4454777; Fax:+971-2- 4463339 Website: www.ead.ae Front End Paper-3_Uniform Plimbing Code plumbing introductions_L8 11/21/09 9:06 PM Page 5 Preface Water has been considered as the most precious materials are also a major cause of the loss of such commodity on earth since the beginning of human a high percentage of the produced water. Factors civilizations. It holds a special place in Islamic tradi- that contribute further to this loss include poor tion as it is considered to be the source of life and quality of materials, poor designs of internal water the medium through which humans cleanse their supply networks and substandard performance by bodies and souls before prayer. contractors. In arid areas such as the UAE and the rest of the With a view to learn from the experience of other Arabian Peninsula, water has played a central role governments worldwide, we were impressed with in the culture, as it determined where human set- the efforts made by the Orange County in tlements would establish their trading routes and California to cope with their problem of meeting animal grazing grounds. demands for high quality water and ensuring a secure supply to its constituency. Orange County Today, UAE, as with the rest of the GCC coun- had sought assistance from the International tries is almost totally dependent on the desalina- Association of Pluming and Mechanical Officials tion of sea water to produce fresh water which is (IAMPO), an organization with over 80 years of brought to consumers, often over a network of experience in providing guidance to governments pipes that extend for hundreds of kilometers. and industries for the protection of public health Although the effort and pain of securing fresh and safety. water for daily requirements have disappeared, with it has come the complete dependency and The EAD contracted IAMPO to develop a pluming reliance of the government to provide desalinated code for Abu Dhabi built along the lines of the and reconstituted water at a cost that exceeds the principles from the Orange County Pluming Code cost of any water in the world. that can serve as a guidebook and manual for selection of materials, design of networks, quality As the population expands and the demand for of workmanship of water supplies and the waste water rises, the ability to expand to meet the water collection systems inside buildings. growing need by building additional desalination plants become more difficult not only due to the The code is hoped to enhance the efforts of gov- costs involved but also for the impact such plants ernment officials and contractors in providing our will have on the environment. Desalination creates society with a safe, reliable, as well as an efficient a double impact, both in terms of consuming ener- water supply and sanitation system for our homes, gy and thus the release of carbon dioxide as well government, commercial buildings and to the as the release of warm and salty effluents that con- industries. tain the byproducts of disinfection into the ocean On a final note, May I emphasize that Codes and thereby harming our fisheries and the marine envi- manuals alone cannot solve the problem of water ronment. loss in our water distribution and waste collection In our analysis for the water supply and demand, systems. It takes dedication, hard work and perse- we have learned that perhaps as high as 40% of the verance on our part as government agencies and produced water is unaccounted for. Some of that public servants in addition to the commitment we may be attributed to illegal connections which are can acquire from our contractors to produce the being addressed by the installation of more water quality of workmanship worthy of admiration by meters. However, leakage, breakage and failure of our people. Front End Paper-4_Uniform Plimbing Code TABLEOFCONTENTS Chapter1 Administration ...................1 301.3 AlternativeEngineeredDesign ....24 PartI .................................1 302.0 DisposalofLiquidWaste .........24 101.0 Title,Scope,andGeneral ...........1 303.0 ConnectionstoPlumbing 101.1 Title .............................1 SystemRequired .................24 101.2 Purpose..........................1 304.0 SewersRequired .................24 101.3 PlansRequired ...................1 305.0 DamagetoDrainageSystem 101.4 Scope............................1 orPublicSewer ..................24 306.0 IndustrialWastes ................24 101.5 ApplicationtoExisting PlumbingSystem .................2 307.0 Location ........................25 102.0 OrganizationandEnforcement .....2 308.0 ImproperLocation ...............25 102.1 AuthorityHavingJurisdiction ......2 309.0 Workmanship ...................25 102.2 DutiesandPowersofthe 309.4 InstallationPractices..............25 AuthorityHavingJurisdiction ......2 310.0 ProhibitedFittingsandPractices ...25 102.3 ViolationsandPenalties ...........3 311.0 WaterConservation ..............25 103.0 PermitsandInspections............3 311.1 Purpose.........................25 103.1 Permits ..........................3 Table3-1 FixtureFittingMaximumFlow 103.2 ApplicationforPermit .............3 Rates ...........................25 103.3 PermitIssuance ...................4 312.0 IndependentSystems .............26 103.4 Fees .............................5 313.0 ProtectionofPiping,Materials, andStructures ...................26 103.5 Inspections .......................6 313.1 PipesPassingThroughor 103.6 ConnectionApproval..............8 UnderWalls.....................26 103.7 Unconstitutional ..................8 313.2 StressandStrain .................26 103.8 Validity .........................8 PartII 313.3 LocationofBuildingSewer ........26 .................................8 313.4 ProtectionAgainstCorrosion 104.0 DesalinationPlants ................8 orPhysicalDamage ..............26 104.1 General ..........................8 313.5 ProtectivelyCoatedPipe ..........26 104.2 PlansRequired ...................8 313.6 Condensation ...................26 104.3 DrawingsandSpecifications........9 313.7 InsulationandLocation ..........26 104.4 Permits ..........................9 313.8 Exposure .......................26 104.5 DesalinationTechnologies .........9 313.10 WaterproofingofOpenings .......26 104.6 Feedwater........................9 313.12 Sleeves .........................27 104.7 Location .........................9 313.14 Ratproofing .....................27 104.8 Pretreatment .....................9 314.0 HangersandSupports ............27 104.9 Post-Treatment ...................9 Table3-2 HangerRodSizes ................27 104.10 WasteTreatment ..................9 315.0 Trenching,Excavation 104.11 Maintenance .....................9 andBackfill .....................27 315.3 OpenTrenches ..................28 Chapter2 Definitions .....................11 316.0 JointsandConnections ...........28 201.0 General .........................11 316.1 TypesofJoints ...................28 202.0 DefinitionofTerms ..............11 316.2 PlasticPipetoOtherMaterials .....29 316.3 FlangedFixtureConnections ......29 Chapter3 GeneralRegulations ............23 316.4 ProhibitedJointsandConnections..29 301.0 Materials-StandardsandAlternates ..23 317.0 IncreasersandReducers ..........29 301.1 MinimumStandards .............23 318.0 Food-HandlingEstablishments ....29 301.2 AlternateMaterialsandMethods 319.0 TestGauges .....................29 ofConstructionEquivalency.......23 320.0 MedicalGasandVacuumSystems ..29 I UNIFORMPLUMBINGCODEOFABUDHABI: ANENVIRONMENTALGUIDEFORWATERSUPPLYANDSANITATION Table3-3 PipeMaterialSpacingand 410.5 OverflowsinFlushTanks .........34 Supports ........................30 411.0 FloorDrainsandShowerStalls ....34 411.2 LocationofFloorDrains ..........34 Chapter4 PlumbingFixturesand 411.3 FoodStorageAreas ..............34 FixtureFittings .................31 411.4 FloorSlope ........................34 411.10 LocationofValvesandHeads .....36 401.0 Materials-GeneralRequirements ..31 411.11 WaterSupplyRiser...............36 401.1 QualityofFixtures ................31 412.0 MinimumNumberof 402.0 Water-ConservingFixturesand RequiredFixtures ................36 Fittings .........................31 412.1 FixtureCount ...................36 402.2 WaterClosets....................31 412.2 AccesstoFixtures ................36 Table4-1 MaximumFlowRatesand 412.3 SeparateFacilities ................36 FlushVolumes...................31 412.4 FixtureRequirements 402.3 Urinals .........................31 forSpecialOccupancies ..............36 402.4 Faucets .........................31 412.5 FacilitiesinMercantile 402.5 EmergencySafetyShowers ........31 andBusinessOccupancies 402.6 Installation ......................31 ServingCustomers ...............36 403.0 Overflows.......................31 412.6 ToiletFacilitiesforWorkers ........36 404.0 StrainersandConnections.........31 413.0 FixturesandFixtureFittings forPersonswithDisabilities .......36 404.1 Strainers/Gratings ...............31 413.1 LimitationofHotWater 404.2 Connections .....................32 TemperatureforPublicLavatories ..37 405.0 ProhibitedFixtures ...............32 414.0 BathtubsandWhirlpoolBathtubs ..37 405.2 ProhibitedUrinals..................32 414.5 LimitationofHotWaterin 406.0 SpecialFixturesandSpecialties ....32 BathtubsandWhirlpoolBathtubs ...37 406.1 WaterandWasteConnections .....32 415.0 InstallationofFixtureFittings .....37 406.3 SpecialUseFixtures ..............32 416.0 Bidets ..........................37 406.4 ZincAlloyComponents...........32 416.1 Materials........................37 407.0 Installation ......................32 416.2 BackflowProtection ..............37 407.1 Cleaning ........................32 416.3 LimitationofWaterTemperature 407.2 Joints ...........................32 inBidets ........................37 407.3 SecuringFixtures ................33 417.0 FutureFixtures ..................37 407.4 Wall-HungFixtures ..............33 418.0 ShowerandTub-Shower 407.5 Setting ..........................33 CombinationControlValves ......37 407.6 InstallationsforPersonswith Table4-2 MinimumPlumbingFacilities .....38 Disabilities ......................33 Chapter5 WaterHeaters,SolarThermal 407.7 SupplyFittings ..................33 EnergyandChillers 408.0 WaterClosets....................33 .............41 PartI 408.2 WaterClosetSeats ...............33 ................................41 408.3 SecuringFloor-Mounted, 501.0 General .........................41 Back-OutletWaterClosetBowls ...33 502.0 WaterHeaters ...................41 408.4 ClosetRings(ClosetFlanges) ......33 502.1 ConstructionandInstallation .......41 409.0 Urinals .........................33 502.2 ElectricWaterHeaters ............41 410.0 FlushingDevicesforWater 502.3 Oil-FiredWaterHeaters ..........41 ClosetsandUrinals...............34 502.4 IndirectFiredWaterHeaters ......41 410.1 FlushingDevicesRequired ........34 Table5-1 FirstHourRating ................41 410.2 AutomaticFlushingTanks ........34 502.5 Permits .........................42 410.3 FlushometerValves ..............34 502.6 Inspections ......................42 410.4 WaterSupplyforFlushTanks .....34 503.0 WaterHeaterConnections ........42 II TABLEOFCONTENTS PartIII Chillers 503.1 WaterHeaterConnectors .........42 ........................47 503.2 FlexibleCorrugatedConnectors....42 510.0 General .........................47 504.0 SafetyDevices ...................42 510.1 Disconnects .....................47 504.1 Pressure-LimitingValve ..........42 510.2 Testing .........................47 504.2 Temperature-LimitingDevices.....42 510.3 Construction ....................47 504.3 CombinationTemperatureand 510.4 Installation ......................47 PressureReliefValve .............42 510.5 Clearances .......................47 504.4 VacuumReliefValves ............42 510.6 Electrical ........................48 504.5 DischargeforReliefValve .........43 510.7 Transfer ........................48 505.0 AppliancesonRoofs..............43 510.8 Locations .......................48 505.1 General .........................43 510.9 AccessandService ...............49 505.2 InstallationofApplianceson 510.10 Refrigerants .....................49 Roofs ...........................43 510.11 Evaporator ......................49 505.3 AccesstoAppliancesonRoofs .....43 510.12 TemperatureControl .............49 505.4 AppliancesinAttics ..............44 PartII SolarThermalEnergyfor 510.13 Condenser ......................49 SolarSpaceHeatersand 510.14 Compressors ....................49 SolarWaterHeating .............44 510.15 ChilledWaterPiping...............49 506.0 ThermalStorageorHeat 510.16 Efficiency .........................49 ExchangerTankConstruction .....44 Table5-6 AllowableRefrigerantTable ........50 506.1 General .........................44 Chapter6 WaterSupplyandDistribution 506.2 Concrete ........................44 ...55 PartI WaterSupplyandDistribution 507.0 ExpansionTanks .................44 Systems 507.1 General .........................44 ........................55 507.2 SystemswithOpenExpansion 601.0 HotandColdWaterRequired .....55 Tanks ..........................44 601.2 IdentificationofNonpotable 507.3 Closed-TypeSystems .............44 WaterSystems ...................56 507.4 MinimumCapacityofClosed- Table6-1 MinimumLengthofColorField TypeTank ........................45 andSizeofLetters................56 507.5 TestPressureforTanksUsed 602.0 UnlawfulConnections ............56 inSolarSystems .................45 603.0 Cross-ConnectionControl .........56 508.0 Collectors .......................45 Table6-2 BackflowPreventionDevices, AssembliesandMethods..........57 508.1 Construction ....................45 603.1 ApprovalofDevicesor 508.2 Location ........................45 Assemblies ......................59 508.3 AirCollectors ...................45 603.2 BackflowPreventionDevices, 508.4 FireSafetyRequirements..........45 Assemblies,andMethods .........59 Table5-2 ExpansionTankCapacitiesfor Table6-3 MinimumAirgapsforWater GravityHotWaterSystems .......46 Distribution .....................59 Table5-3 ExpansionTankCapacitiesfor 603.3 GeneralRequirements ............60 ForcedHotWaterSystems ........46 603.4 SpecificRequirements ............60 509.0 ThermalInsulation ...............46 Table6-4 MaterialsforBuildingSupply 509.1 General .........................46 andWaterDistributionPipe 509.2 Finish ..........................46 andFittings .....................63 509.3 Tanks ..........................46 604.0 Materials........................63 509.4 TemperatureDifference ...........46 604.6 PlasticFittings ...................64 509.5 Insulation .......................46 604.7 FlexibleCorrugatedConnectors....64 Table5-4 MinimumPipeInsulation .........47 604.8 SlipJoints .......................64 Table5-5 MinimumTankInsulation ........47 605.0 JoiningMethods .................64 III UNIFORMPLUMBINGCODEOFABUDHABI: ANENVIRONMENTALGUIDEFORWATERSUPPLYANDSANITATION 605.1 PVCPlasticPipeandJoints ........64 Table6-6 MinimumSizesofIndividual WaterDistributionPipingfor 605.2 CPVCPlasticPipeandJoints ......64 ManifoldSystems ................73 605.3 PEPlasticPipe/Tubingand Table6-7 SeparateColdandHotWater Joints ...........................65 SupplyFixtureUnitValves ........74 605.4 PE-AL-PEPlasticPipe/Tubing Table6-8 SizingofResidentialWater andJoints .......................65 Softeners ........................75 605.5 PEXPlasticTubingandJoints......65 Table6-9 ConversionofWaterSupply 605.6 PEX-AL-HDPEPlasticTubing FixtureUnits ....................75 andJoints .......................66 PartII BoosterPumpSystems .........76 605.7 PEX-AL-PEXPlasticTubing Chapter7 SanitaryDrainage andJoints .......................66 ...............77 PartI DrainageSystems 605.8 PolypropylenePlasticPipeand ..............77 Joints ...........................66 701.0 Materials........................77 605.9 PP-AL-PPPlasticPipeandJoints ...67 702.0 FixtureUnitEquivalents ..........77 606.0 Valves ..........................67 703.0 DrainageSystemSizing ...........77 607.0 PotableWaterStorageTanks ......67 703.1 DrainageFixtureUnits............77 607.1 General .........................67 703.2 SizeofBuildingDrainand 608.0 WaterPressure,Pressure BuildingSewer ..................77 Regulators,PressureRelief 703.3 SizeofHorizontalBranches Valves,andVacuumRelief andVerticalStacksforThree Valves ..........................70 BranchIntervalsorLess...........77 608.1 InadequateWaterPressure ........70 Table7-1 MaterialsforDrain,Wasteand 608.2 ExcessiveWaterPressure .........70 VentPipeandFittings ............78 608.3 ThermalExpansion...............70 703.4 SizeofHorizontalBranches andVerticalStacksforMore 609.0 Installation,Testing,Unions, ThanThreeBranchIntervals .......78 andLocation ....................70 704.0 FixtureConnections(Drainage) ....78 609.1 Installation ......................70 705.0 JointsandConnections ...........79 609.4 Testing .........................71 705.1 TypesofJoints ...................79 609.5 Unions .........................71 Table7-2 DischargeCapacityinLitres 609.6 Location........................71 perSecondForIntermittent 609.8 DisinfectionofPotable FlowOnly ......................79 WaterSystem....................71 705.2 SpecialJoints ......................80 609.9 WaterHammer ..................71 706.0 ChangesinDirectionof 610.0 SizeofPotableWaterPiping.......71 DrainageFlow ...................80 610.7 SizingforVelocity ...............72 Table7-3 DrainageFixtureUnitValues 610.8 Exceptions ......................72 (DFU) ..........................81 Table7-4 MaximumUnitLoadingand 611.0 ManifoldorGriddedSystems .....72 MaximumLengthofDrainage ................. 611.1 General .........................72 andVentPiping 82 611.2 Valves ..........................73 707.0 Cleanouts .......................83 611.3 Installation ......................73 708.0 GradeofHorizontalDrainage 611.4 Sizing ..........................73 Piping ..........................83 612.0 DrinkingWaterTreatmentUnits ...73 Table7-5 Cleanouts .......................83 612.1 CompliancewithStandard ........73 709.0 GravityDrainageRequired ........84 612.2 AirgapDischarge ................73 710.0 DrainageofFixturesLocated BelowtheNextUpstream 612.3 ConnectionTubing ...............73 ManholeorBelowtheMain 612.4 SizingofResidentialSofteners .....73 SewerLevel .....................84 Table6-5 ManifoldSizing .................73 710.12 GrinderPumpEjector ...............85 IV TABLEOFCONTENTS 710.13 MaceratingToiletSystems ...........85 801.5 Sterilizers .......................91 711.0 SudsRelief ......................85 801.6 DriporDrainageOutlets...........91 712.0 Testing .........................85 802.0 Approvals ......................91 712.1 Media .............................85 803.0 IndirectWastePiping.............91 712.2 WaterTest .......................85 804.0 IndirectWasteReceptors ..........92 712.3 AirTest...........................85 805.0 PressureDrainageConnections ....92 PartII BuildingSewers ................86 806.0 SterileEquipment ................92 713.0 SewerRequired ..................86 807.0 Appliances ......................92 808.0 CoolingWater ...................92 714.0 DamagetoPublicSewerorPrivate SewageDisposalSystem ..........86 809.0 DrinkingFountains ..............92 715.0 BuildingSewerMaterials .........86 810.0 SteamandHotWaterDrainage CondensersandSumps............92 716.0 Markings .......................86 Table8-1 PipeConnectionsinBlowoff 717.0 SizeofBuildingSewers ...........86 CondensersandSumps ...........93 718.0 Grade,Support,andProtectionof 810.4 Strainers ........................93 BuildingSewers .................87 811.0 ChemicalWastes .................93 719.0 Cleanouts .......................87 812.0 ClearWaterWastes ..............94 720.0 SewerandWaterPipes ...........87 813.0 SwimmingPools .................94 721.0 Location ........................87 814.0 CondensateWastesand 722.0 AbandonedSewersandSewage Control .........................94 DisposalFacilities ................88 814.1 CondensateDisposal .............94 Table7-6 MinimumHorizontalDistance 814.2 Size ............................94 RequiredFromBuildingSewer......88 Table8-2 MinimumCondensatePipeSize ...94 Table7-7 Minimum/MaximumFixture 814.3 PointofDischarge ................94 UnitLoadingonBuilding SewerPiping ......................88 Chapter9 Vents ..........................95 723.0 BuildingSewerTest ..............88 PartIII VacuumWasteDrainage 901.0 General .........................95 Systems ..................... 89 901.1 VentsRequired ..................95 724.0 General .........................89 901.2 TrapSealProtection ................95 724.1 SystemDesign ...................89 902.0 VentsNotRequired ..............95 903.0 Materials........................95 724.2 Fixtures .........................89 904.0 SizeofVents ....................95 724.3 DrainageFixtureUnits............90 905.0 VentPipeGradesand 724.4 WaterSupplyFixtureUnits .......90 Connections .....................95 724.5 Materials........................90 906.0 VentTermination ................96 724.6 TrapsandCleanouts .............90 906.6 Lead ...........................96 724.7 Testing .........................90 907.0 VentStacksandReliefVents.......96 724.8 Manufacturer’sInstallation 908.0 WetVenting .....................96 Instructions .....................90 908.1 VerticalWetVenting ..............96 Chapter8 IndirectWastes 908.2 HorizontalWetVentingfor .................91 Bathroom(Groups)...............97 801.0 IndirectWastes ..................91 909.0 SpecialVentingforIsland 801.1 AirgaporAirbreakRequired ......91 Fixtures .........................97 801.2 FoodandBeverageHandling 910.0 CombinationWasteand Establishments.....................91 VentSystems ....................97 801.3 SinkTraps ......................91 911.0 EngineeredVentSystem ..........98 801.4 ConnectionsfromWater 911.1 General .........................98 DistributionSystem ..............91 911.2 MinimumRequirements ..........98 V UNIFORMPLUMBINGCODEOFABUDHABI: ANENVIRONMENTALGUIDEFORWATERSUPPLYANDSANITATION Chapter10 TrapsandInterceptors ..........99 1017.0 OilandFlammable 1001.0 TrapsRequired ..................99 LiquidInterceptors ..............104 1002.0 TrapsProtectedbyVentPipes .....99 1017.1 InterceptorsRequired ...........104 1003.0 Traps-Described ................99 1017.2 DesignofInterceptors ...........105 Table10-1 HorizontalLengthsofTrap Chapter11 StormDrainage Arms(Exceptforwaterclosets ................107 andsimilarfixtures) ..............99 1101.0 General ........................107 1004.0 Traps-Prohibited ...............100 1101.1 WhereRequired ................107 1005.0 TrapSeals ......................100 1101.2 StormWaterDrainageto 1006.0 FloorDrainTraps ...............100 SanitarySewerProhibited ........107 1007.0 TrapSealProtection .............100 1101.3 MaterialUses ...................107 1008.0 BuildingTraps..................100 1101.4 ExpansionJointsRequired .......107 1009.0 IndustrialInterceptors(Clarifiers) 1101.5 SubsoilDrains ..................107 andSeparators .................100 1101.6 BuildingSubdrains ..............108 1009.1 WhenRequired .................100 1101.7 AreawayDrains ................108 1009.2 Approval ......................100 1101.8 WindowAreawayDrains ........108 1009.3 Design.........................100 1101.9 FillingStationsandMotor 1009.4 ReliefVent .....................100 VehicleWashingEstablishments ...108 1009.5 Location .......................100 1101.10 PavedAreas ....................108 1009.6 MaintenanceofInterceptors ......101 1101.11 RoofDrainage ..................108 1009.7 Discharge ......................101 1101.12 Cleanouts ......................108 1010.0 Slaughterhouses,Packing 1102.0 Materials.......................109 Establishments,etc. .............101 1102.1 Conductors ....................109 1011.0 MinimumRequirements 1102.2 Leaders ........................109 forAutoWashRacks ............101 1102.3 UndergroundBuilding 1012.0 CommercialandIndustrial StormDrains ...................109 Laundries ......................101 1102.4 BuildingStormSewers...........109 1013.0 BottlingEstablishments ..........101 1014.0 GreaseInterceptors..............101 1102.5 SubsoilDrains ..................109 1014.2 HydromechanicalGrease 1103.0 TrapsonStormDrains Interceptors ....................101 andLeaders ....................109 1014.3 GravityGreaseInterceptors ......102 1103.1 WhereRequired ................109 Table10-2 HydromechanicalInterceptor 1103.2 WhereNotRequired ............109 SizingUsingGravityFlowRates ..102 1103.3 TrapSize.......................109 Table10-3 GravityInterceptorSizing ........103 1103.4 MethodofInstallationof 1015.0 FOG(Fats,Oils,andGreases) CombinedSewer................109 DisposalSystem ................104 1104.0 Leaders,Conductors, 1015.1 Purpose........................104 andConnections ................109 1015.2 Scope..........................104 1104.1 ImproperUse ..................109 1015.3 Components,Materials, 1104.2 ProtectionofLeaders ............109 andEquipment .................104 1104.3 CombiningStormwith 1015.4 SizingApplication SanitaryDrainage ...............109 andInstallation .................104 1105.0 RoofDrains ....................109 1015.5 Performance....................104 1105.1 Material .......................109 1016.0 SandInterceptors ...............104 1105.2 DomeorStrainerfor 1016.1 WhereRequired ................104 GeneralUse ....................109 1016.2 ConstructionandSize ...........104 1105.3 StrainersforFlatDecks ..........110 1016.3 SeparateUse ...................104 1105.4 RoofDrainFlashings ............110 VI