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PART1InternationalPlumbing CodeChapters 1 through 14 Chapter 1 Chapter 2Chapter 3Chapter 4Chapter 5Chapter 6Chapter 7Chapter 8Chapter 9Chapter 10Chapter 11Chapter 12 Chapter 13Chapter 14142474 pt01 ptg01 hr 001-071.indd 1Administration No changesaddressedDefinitionsGeneral RegulationsFixture, Faucets, and FixturesWater HeatersWater Supply DistributionSanitary DrainageIndirect/Special WasteVentsTraps, Interceptors, and SeparatorStorm DrainageSpecial Piping and StorageNo changes addressedGray Water Recycling SystemsReferenced Standards No changesaddressedhapter 1 of the International Plumbing Code (IPC) clarifies how the code will be enforced bycode officials. Definitions of plumbing codeterminology are found in Chapter 2. General regulations in Chapter 3 identify requirements not listed inother code chapters, such as testing and inspections.Fixtures and water heaters are addressed in Chapters 4and 5, respectively. Chapters 6 and 7 regulate waterand drainage piping systems, in that order. Indirect/special waste is covered in Chapter 8. Chapter 9 detailsacceptable venting methodologies with in-depth piping arrangements. The provisions for traps with various receptors are found in Chapter 10. Storm drainage,with its piping collection system, is covered inChapter 11. Installation, design, storage, handling, anduse of nonflammable medical gas systems are addressedin Chapter 12. Gray-water recycling systems are nowaddressed in Chapter 13. Standards are identified withclear guidelines in Chapter 14. Appendices A throughF cover nonmandatory provisions for permit fees, rainfall rates, vacuum drainage, degree design temperatures, a water sizing method, and structural protectionmethodology. C16/29/11 12:54 PM

202417.5.2.6Plumbing Fixture DefinitionShower Pan Liner Materials202424.9Plumbing Appliance DefinitionWater Closet Personal Hygiene Devices202504.4.1Grease Interceptor DefinitionWater Heater Storage Tank Relief Valves303.1, 303.4504.7Material Identification and Third-PartyCertificationWater Heater Pans308.9605Parallel Water Distribution SystemsPolyethylene of Raised-Temperature (PE-RT)Plastic Tubing315.1TA B L E 6 0 5 . 3Sealing of Annular Spaces at PenetrationsPolyethylene (PE) Water Service PipeTA B L E 4 0 3 . 1TA B L E 6 0 5 . 3Minimum Number of Required Plumbing FixturesPEX Water Service Pipe403.2606.7Separate Toilet Facilities in Group M OccupanciesLabeling of Water Distribution Pipes in Bundles403.2.1607.1.1Family or Assisted-Use Toilet Facilities Serving asSeparate FacilitiesWater-Temperature-Limiting Means403.3.2Relationship of Toilet Rooms and Food PreparationAreas403.3.6Locking of Toilet Room Doors403.5Drinking Fountain Locations405.3.1Minimum Water Closet Compartment Size405.4607.2Hot or Tempered Water Supply to Fixtures607.5Hot Water Piping Insulation608.8Identification of Nonpotable Water704.3, 711.2.1Horizontal Branch ConnectionsTA B L E 7 0 9 . 1Drainage Fixture Units for Bathroom GroupsFloor and Wall DrainageConnections712.3.3407.2712.3.5Bathtub Waste Outlets and OverflowsSump Pump Connection to the Drainage System410715.1Minimum Required Number of Drinking FountainsFixture Protection from Sewage BackflowSump Pump and Ejector Discharge Pipe and Fittings2S GN S42474 pt01 ptg01 hr 001-071.indd 2C SO6/29/11 12:54 PM

802.1.81002.1Indirect Discharge of Food Preparation SinksFloor Drains in Multi-Level Parking Structures802.21003.1Installation of Indirect Waste PipingInterceptors and Separators802.31003.3.1Prohibited Locations for Waste ReceptorsAlternate Grease Interceptor Locations901.3, 918.81003.3.4Air Admittance Valves for Chemical Waste VentSystemsHydromechanical Grease Interceptors903.5Location of Vent Terminals915.2Combination Waste and Vent System Sizing9171105Roof Drain Strainers1107Siphonic Roof Drainage SystemsCHAPTER 13Gray-Water Recycling SystemsSingle-Stack Vent Systems342474 pt01 ptg01 hr 001-071.indd 336/29/11 12:54 PM

4PART 1 International Plumbing Code202CHANGE TYPE:Plumbing FixtureDefinitionCHANGE SUMMARY: The definition of “plumbing fixture” has beenmodified to include fixtures such as waterless urinals.ModificationInternational Code Council 2012 CODE: Plumbing Fixture. A receptacle or device that is eitherpermanently or temporarily connected to the a water distribution supplysystem or of the premises and demands a supply of water therefrom;discharges wastewater, liquid-borne waste materials or sewage eitherdirectly or indirectly to a the drainage system of the premises; or requiresboth. Such receptacles or devices require a water supply of water;connection and a or discharge liquid waste or liquid-borne solid waste;or require a supply of water and discharge waste to a the drainage systemof the premises.CHANGE SIGNIFICANCE: The previous definition of “plumbing fixture”was outdated and incomplete. The definition now includes receptaclesand devices that do not necessarily require connection to a watersupply. Waterless urinals and floor drains, now addressed in the reviseddefinition, were not defined as plumbing fixtures in the past.Waterless urinalS GN S42474 pt01 ptg01 hr 001-071.indd 4C SO6/29/11 12:54 PM

Significant Changes to the IPC 2012 EditionCHANGE TYPE:202ClarificationCHANGE SUMMARY: The definition of “plumbing appliance” has beenchanged to clarify the difference between appliances and fixtures. Plumbing Appliance Definition5202Plumbing ApplianceDefinition2012 CODE: Plumbing Appliance. Any one of a special class ofplumbing fixtures Water-connected or drain-connected devices intendedto perform a special function. Included are fixtures having the Thesedevices have their operation or control dependent on one or moreenergized components, such as motors, controls, or heating elementsor pressure or temperature sensing elements. Such fixtures devices aremanually adjusted or controlled by the owner or operator, or are operatedautomatically through one or more of the following actions; a time cycle,a temperature range, a pressure range, a measured volume or weight.International Code Council CHANGE SIGNIFICANCE: The modified definition of “plumbingappliance” provides a better distinction between appliances and fixtures.The revised text updates and simplifies the definition, now recognizingthese two classes as different. Examples of plumbing appliances includedishwashers, clothes washers, garbage disposals, water softeners, waterpurifiers, and water heaters.Domestic garbage disposal42474 pt01 ptg01 hr 001-071.indd 56/29/11 12:54 PM

6PART 1 International Plumbing Code202CHANGE TYPE:Grease InterceptorDefinitionCHANGE SUMMARY: The definition of “grease interceptor” has beenmodified for consistency with current industry terms for the two generaltypes of grease interceptors being used in plumbing installations.Modification2012 CODE: Grease Interceptor. A plumbing appurtenance that isinstalled in a sanitary drainage system to intercept oily and greasy wastesfrom a wastewater discharge. Such device has the ability to intercept freefloating fats and oils.Grease Interceptor.Hydromechanical. Plumbing appurtenances that are installedin the sanitary drainage system to intercept free-floating fats, oilsand grease from wastewater discharge. Continuous separation isaccomplished by air entrainment, buoyancy and interior baffling.Gravity. Plumbing appurtenances of not less than 500 gallons(1893 L) capacity that are installed in the sanitary drainagesystem to intercept free-floating fats, oils and grease fromwastewater discharge. Separation is accomplished by gravityduring a retention time of not less than 30 minutes.The installation of a typicalhydromechanical greaseinterceptor (Courtesy of Thermaco,6" thickconcrete padInc. 2010 )Solid manhole coverGrade or pavingSteps36" diameterprecastmanholebarrel sectionAs required7"Precastconcretegreaseinterceptor24"10" COOutletCast irontee withcleanoutplugWaterlevel12"Cast ironlong 1/4 bend8"Concrete baffleInternational Code Council InletGrout(typical)Typical concrete grease interceptorS GN S42474 pt01 ptg01 hr 001-071.indd 6C SO6/29/11 12:54 PM

Significant Changes to the IPC 2012 Edition202 Grease Interceptor Definition7CHANGE SIGNIFICANCE: The provisions of Section 1003.3.4 addressinggrease interceptors and automatic grease removal devices were neverintended to apply to gravity grease interceptors. The new terminology nowmakes a clear distinction between the two types of grease interceptors,hydromechanical and gravity. The revision to the definition along withthe changes made in Section 1003.3.4 place the IPC in better alignmentwith product standards and industry terminology. Both types of greaseinterceptors require diligent effort by restaurant facility managers and staffto ensure that they are regularly maintained and properly serviced. For agrease collection device to work correctly, it must be properly designed,installed, maintained, and serviced regularly.42474 pt01 ptg01 hr 001-071.indd 76/29/11 12:54 PM

8PART 1 International Plumbing Code303.1, 303.4CHANGE TYPE:Material Identificationand Third-PartyCertificationCHANGE SUMMARY: The identification requirements for plumbingproducts and materials have been clarified.Clarification2012 CODE: 303.1 Identification. Each length of pipe and eachpipe fitting, trap, fixture, material, and device utilized in a plumbingsystem shall bear the identification of the manufacturer and any markingsrequired by the applicable referenced standards.303.4 Third-Party Testing and Certification. All plumbing productsand materials shall comply be listed by a third-party certification agencyas complying with the referenced standards, specifications and performance criteria of this code. and shall be identified in accordance withSection 303.1. When required by Table 303.4, plumbing products and materials shall either be tested by an approved third–party testing agency orcertified by an approved third–party certification agency. Products andmaterials shall be identified in accordance with Section 303.1.TABLE 303.4 Products and Materials Requiring Third-Party Testingand Third-Party CertificationProduct or MaterialThird-Party CertifiedThird-Party TestedPotable water supplysystem componentsand potable water fixturefittingsRequired–Sanitary drainage andvent system componentsPlastic pipe, fittings andpipe-related componentsAll OthersWaste fixture fittingsPlastic pipe, fittings andpipe-related componentsAll OthersStorm drainage systemcomponentsPlastic pipe, fittings andpipe-related componentsAll OthersPlumbing fixtures–RequiredPlumbing appliancesRequired–Backflow preventiondevicesRequired–Water distributionsystem safety devicesRequired–Special waste systemcomponents–RequiredSubsoil drainage systemcomponents–RequiredS GN S42474 pt01 ptg01 hr 001-071.indd 8C SO6/29/11 12:54 PM

Significant Changes to the IPC 2012 Edition303.1, 303.4 Material Identification9PEX tubing label with complete identification and conformance information (Courtesy of Uponor Corporation)CHANGE SIGNIFICANCE: The modification to the identificationprovisions of Section 303.1 clarifies the intent of the code that productsand materials shall bear the identification of the manufacturer, as wellas the identification requirements that are referenced by the applicablestandard. As a result of the modifications made to Section 303.4, allplumbing products and materials must now be listed by a third-partycertification agency. Table 303.4 was deleted as a result of the modificationsmade to Section 303.4.42474 pt01 ptg01 hr 001-071.indd 96/29/11 12:54 PM

10PART 1 International Plumbing Code308.9CHANGE TYPE:Parallel WaterDistribution SystemsCHANGE SUMMARY: In parallel water distribution systems, the hotand cold water piping may now be grouped in the same pipe bundle.Modification2012 CODE: 308.9 Parallel Water Distribution Systems. Pipingbundles for manifold systems shall be supported in accordance withTable 308.5. Support at changes in direction shall be in accordance withthe manufacturer’s installation instructions. Where Hhot and cold waterpiping shall not be grouped in the same is bundled with cold or hot waterpiping, each hot water pipe shall be insulated.CHANGE SIGNIFICANCE: Hot water piping is now permitted to bebundled together with other cold or hot water piping. However, thisinstallation method is only permitted where each hot water pipe isinsulated. Only one of the hot water pipes in a parallel water distributionsystem actually has hot water running through it at any given time. Theother hot water pipes have cold water sitting in them and heat transferbetween the hot pipe being used and the other piping will take place.Manifold plumbing systems are control centers for hot and cold waterthat feed flexible PEX supply lines to individual fixtures. Cold water andun-insulated hot water piping in the same bundles are known to absorblarge amounts of heat. This code modification will prevent this costlyheat transfer.International Code Council Hot waterHot waterTempered waterExample of insulated bundle pipingS GN S42474 pt01 ptg01 hr 001-071.indd 10C SO6/29/11 12:54 PM

315.1Significant Changes to the IPC 2012 EditionCHANGE TYPE: 11Sealing of Annular Spaces at Penetrations315.1ModificationCHANGE SUMMARY: The provisions for sealing any annular spacescreated at piping penetrations have been revised to be consistent withthe building envelope sealing requirements of the International EnergyConservation Code.Sealing of AnnularSpaces at Penetrations2012 CODE: 305.4 315.1 Sleeves Sealing of Annular Spaces. Theannular spaces between the outside of a pipe and the inside of a pipesleeves, and pipes or between the outside of a pipe and an openingin a building envelope wall, floor, or ceiling assembly penetrated bya pipe shall be filled or tightly caulked sealed in an approved mannerwith caulking material or closed with a gasketing system. The caulkingmaterial, foam sealant, or gasketing system shall be designed for theconditions at the penetration location and shall be compatible with thepipe, sleeve and building materials in contact with the sealing materials.Annular spaces between created by pipes penetrating sleeves and pipes infire resistance-rated assemblies or membranes of such assemblies shall befilled or tightly caulked sealed or closed in accordance with Section 714of the International Building Code.315.1 continuesAtticunconditionedspaceSealConditioned spaceSealNon-rated floorceiling assemblySealing not requiredSealConditioned spaceSealSealing not requiredSealing notrequiredNot afoundation wallUnconditioned spaceConditioned spaceConditioned spaceInternational Code Council Conditioned spaceSealing of building envelope42474 pt01 ptg01 hr 001-071.indd 116/29/11 12:54 PM

12PART 1 International Plumbing Code315.1 continuedCHANGE SIGNIFICANCE: It is important that penetrations of thebuilding envelope and other building elements be appropriately sealed.The modified text clarifies that only the ends of the annular spacesneed to be sealed or closed. Filling of the entire annular space cavity isunnecessary for preventing uncontrolled air movement. The term “tightlycaulked” was removed, as it was considered outdated language from theera of “packing and pouring” lead joints. It is anticipated that there willbe only a few situations that would warrant having a pipe so rigidly fixedin a through-penetration. The term “pipe” was added in the reference tosleeves in order to clarify which sleeves are to be considered.Clarification has been given to what was sometimes interpreted to require sealing between pipe and flexible plastic sleeving that is used forcorrosion protection. It was also considered important to add the requirements that sealing materials be compatible with all items that they mightcome in contact with and that the materials be suitable for the weatherand temperature conditions of the application. There are several solventbased caulking materials that affect plastic piping, and there are instanceswhere a caulking material is inappropriate for outdoor conditions, resulting in rainwater damage to the building.An additional change made was to clarify and emphasize the importance of ensuring that where fire-resistance-rated assemblies are beingpenetrated by pipes, specific materials and methods in accordance withthe International Building Code (IBC) must be used. Proper firestoppingmethods are critical for fire safety.S GN S42474 pt01 ptg01 hr 001-071.indd 12C SO6/29/11 12:54 PM

Significant Changes to the IPC 2012 EditionCHANGE TYPE:Table 403.1 Minimum Number of Required Fixtures13Table 403.1ModificationCHANGE SUMMARY: Service sinks are no longer required in Group Band M occupancies where the occupant load does not exceed 15.2012 CODE:Minimum Numberof Required PlumbingFixturesTABLE 403.1 (IBC TABLE 2902.1) Minimum Number of RequiredPlumbing Fixturesa (See Sections 403.2 and BusinessBBuildings forthe transactionof business,professionalservices, otherservices involvingmerchandise, officebuildings, banks,light industrial andsimilar uses1 service sinkg6MercantileMRetail stores, service 1 service sinkgstations, shops,salesrooms, marketsand shopping centersg. For business and mercantile occupancies with an occupant load of 15 or fewer, servicesinks shall not be required.*Reader’s Note: Other changes may occur in Table 403.1 that will beaddressed in different areas of this book; those portions of the table notaddressed remain unchanged.CHANGE SIGNIFICANCE: A new allowance limited to business andmercantile occupancies permits the omission of a service sink wherethe occupant load of the establishment is 15 or less persons. The basisfor the exception is that there are other thresholds established withinthe code that provide for reduced requirements where the maximumoccupancy is very low. For example, the requirement for separate maleand female restrooms (separate facilities for each sex) is only applicablewhere there are more than 15 occupants, increasing to 100 occupantsin mercantile sales occupancies. The allowance granted by footnote “g”eliminates the mandate for a service sink in small business and mercantileoccupancies. In a small facility, such as a retail store with a sales area ofnot more than 3,000 square feet or an office with a maximum floor areaof 1,500 square feet, a service sink and the associated closet can occupy adisproportionate amount of floor space. Typically, service sinks in thesesmall occupancies are rarely, if ever, used.42474 pt01 ptg01 hr 001-071.indd 136/29/11 12:54 PM

14PART 1 International Plumbing Code403.2CHANGE TYPE:Separate ToiletFacilities in Group MOccupanciesCHANGE SUMMARY: The exemption from separate plumbing facilitiesfor each sex in Group M mercantile occupancies now applies where theoccupant load of the occupancy does not exceed 100.Modification2012 CODE: 403.2 Separate Facilities. Where plumbing fixtures arerequired, separate facilities shall be provided for each sex.Exceptions:1. Separate facilities shall not be required for dwelling units andsleeping units.2. Separate facilities shall not be required in structures or tenantspaces with a total occupant load, including both employeesand customers, of 15 or less.3. Separate facilities shall not be required in mercantileoccupancies in which the maximum occupant load is 50 100or less.International Code Council CHANGE SIGNIFICANCE: Recent years have seen an increase in mixeduse buildings that are predominantly residential in use with one ormore small, secondary retail components. Such retail spaces are quiteoften developed into neighborhood retail that is boutique in nature andclassified as a Group M occupancy. A study by the U.S. Department ofLabor, Bureau of Labor Statistics indicated that the typical floor area of theretail units fell within a range of 1,500 square feet to 3,000 square feet. Asan example, based on International Building Code (IBC) Table 1004.1.1,at 30 square feet per occupant, a typical space of 2,400 square feet wouldGroup M occupancyS GN S42474 pt01 ptg01 hr 001-071.indd 14C SO6/29/11 12:54 PM

Significant Changes to the IPC 2012 Edition403.2 Separate Toilet Facilities in Group M Occupancies15have an occupant load of 80 persons. Consequently, such a space did notpreviously qualify for Exception 3 of the IPC Section 403.5 that allows fora single toilet facility to serve up to 50 occupants. Therefore, the spacewould have required separate toilet facilities for males and females.The requirement for separate facilities for each sex placed on thesesmaller retail occupancies often led to manipulation of the occupantload calculation for the purpose of avoiding the additional toilet facility.Because a Group M occupancy requires a second exit where the occupantload exceeds 49, the manipulation of occupant load subsequentlyadversely impacted the means-of-egress requirements for the space. Byincreasing the occupant load threshold to 100 persons, separate toiletfacilities for each sex are not required for those small retail spaces havingfloor areas not greater than 3,000 square feet.Two accessible single-user toilet facilities occupy approximately80 square feet of floor area. In a 1,500-square-foot tenant space, thesefacilities would occupy more than 5% of the total space. The increase inthe occupant load threshold now allows for the industry norm in boutique retail tenant size to be accommodated with one single-user toiletfacility. Given that it is rare that these small retail spaces would be occupied by the number of persons equal to the design occupant load, and thatIPC Table 403.1 indicates that two water closets are permitted to serve upto 1,000 persons, the provision of a single toilet facility appears to bemore than adequate for the size of space that the proposed occupant loadthreshold increase would allow. The limited floor area of 3,000 squarefeet that the proposed occupant load threshold can accommodate is suchthat neither a 500- nor 300-foot travel distance limitation as required inIPC Section 403.3 would ever be exceeded.42474 pt01 ptg01 hr 001-071.indd 156/29/11 12:54 PM

16PART 1 International Plumbing Code403.2.1CHANGE TYPE:Family or Assisted-UseToilet Facilities Servingas Separate FacilitiesCHANGE SUMMARY: Where separate toilet facilities for each sex arerequired and only one water closet is mandated in each facility, twofamily or assisted-use toilet facilities are now permitted to substitute forthe separate facilities for each sex.AdditionInternational Code Council 2012 CODE: 403.2.1 Family or Assisted-Use Toilet Facilities Servingas Separate Facilities. Where a building or tenant space requires aseparate toilet facility for each sex and each toilet facility is required tohave only one water closet, two family/assisted-use toilet facilities shallbe permitted to serve as the required separate facilities. Family or assisteduse toilet facilities shall not be required to be identified for exclusive useby either sex as required by Section 403.4.Family or assisted-use toilet facilityCHANGE SIGNIFICANCE: Separate toilet facilities for males and femalesare required in most buildings. In many cases, only one water closet ismandated within each toilet facility. In such situations, the code nowpermits the substitution of two family/assisted-use toilet rooms in lieuof the two separate toilet rooms for each sex. The advantage of allowingtwo family/assisted-use toilet facilities to serve as the required separatefacilities is the efficiency provided when either toilet room can be usedby either sex. This increases the availability of facilities in smaller spaceswithout needing to offer multi-user toilet facilities. There are oftensituations where a single gender-based toilet facility can be unavailablefor periods of up to 15 minutes when, for example, the current occupantis using it for companion care, to change diapers, or to change a colostomybag. There will also be less of an impact to potential users when one toiletroom is being cleaned or serviced. This is not a new concept, as the IPChas always permitted the use of a shared toilet room in buildings or tenantspaces with low occupant loads. As another example, males and femalesuse the same toilet facility on airplanes.S GN S42474 pt01 ptg01 hr 001-071.indd 16C SO6/29/11 12:54 PM

Significant Changes to the IPC 2012 EditionCHANGE TYPE:403.3.2 17Relationship of Toilet Rooms and Food Preparation403.3.2AdditionCHANGE SUMMARY: The IBC requirement prohibiting the opening oftoilet rooms directly into food preparation areas is now also establishedin the IPC.Relationship of ToiletRooms and FoodPreparation Areas2012 CODE: 403.3.1 Toilet Room Ingress and Egress. Toilet roomsshall not open directly into a room used for the preparation of food forservice to the public.CHANGE SIGNIFICANCE: IBC Section 1210.5 has historically prohibitedopenings between a toilet room and any room or space where food isbeing prepared for the public, such as a commercial kitchen that servesa restaurant dining area. The requirement that toilet rooms not opendirectly into rooms where food is prepared for the public is necessary tokeep the food preparation areas in a sanitary condition. Replicating thebuilding code provision in the IPC will be helpful and increase efficiencyfor plumbing designers, installers, inspectors, and other IPC users.403.3.2 continuesCooler andfood storageKitchenWomen’srestroomSales counterDining areacustomersInternational Code Council Men’srestroomAcceptable condition42474 pt01 ptg01 hr 001-071.indd 176/29/11 12:54 PM

18PART 1 International Plumbing Code403.3.2 continuedCooler andfood rnational Code Council Sales counterDining areacustomersUnacceptable conditionS GN S42474 pt01 ptg01 hr 001-071.indd 18C SO6/29/11 12:54 PM

Significant Changes to the IPC 2012 EditionCHANGE TYPE:403.3.6AdditionCHANGE SUMMARY: Locking devices are now specifically prohibitedon the egress door of toilet rooms designed for multiple occupants. Locking of Toilet Room Doors19403.3.6Locking of ToiletRoom Doors2012 CODE: 403.3.6 Door Locking. Where a toilet room is designedfor multiple occupants, the egress door for the room shall not be lockablefrom the inside of the room. This section does not apply to family orassisted-use toilet rooms.International Code Council CHANGE SIGNIFICANCE: The doors of multiple-occupant toilet roomsmust no longer be capable of being locked from the inside of the room.Restricting the egress door in this way will reduce the possibility ofinappropriate activities that are more likely to occur when an occupantcan restrict entry to the toilet room. Such locking potential can alsorestrict immediate egress from the toilet room when it may be necessary.Acceptable nonlockable door installationfor a multiple-occupant toilet room42474 pt01 ptg01 hr 001-071.indd 196/29/11 12:54 PM

20PART 1 International Plumbing Code403.5CHANGE TYPE:Drinking FountainLocationsCHANGE SUMMARY: Where drinking fountains are required, thepermitted locations of the fountains have been specified regarding theirplacement in multi-tenant facilities, similar to the permitted locations forrequired public toilet facilities.Addition2012 CODE: 403.5 Required Drinking Fountains. Drinking fountainsshall not be required to be located in individual tenant spaces providedthat public drinking fountains are located within a travel distance of500 feet of the most remote location in the tenant space and not more thanone story above or below the tenant space. Where the tenant space is in acovered or open mall, such distance shall not exceed 300 feet. Drinkingfountains shall be located on an accessible route.CHANGE SIGNIFICANCE: The sharing of public restroom facilities inmulti-tenant facilities has historically been permitted under Section 403.3of the IPC, but the code was silent on the sharing of drinking fountains.The new provision recognizes that if employees and the public can sharepublic restroom facilities, then they should be able to also share drinkingfountains if located within a reasonable distance. The travel distancerestriction of 500 feet maximum between a public drinking fountain andthe most remote location in the tenant space, as well as the limitationrequiring placement of the fountain not more than one story aboveor below the tenant space, is almost identical to the language used inSection 403.3.2 for toilet facilities. The limiting distance of 300 feet incovered mall buildings is the same distance required for toilet facilities.Covered or Open MallTenant space BTenant space CWithin a travel distance of 300 ft.of the most remote location inthe tenant space.D/FTenant space DTenant space ETenant space FInternational Code Council Tenant space ADrinking fountain locationS GN S42474 pt01 ptg01 hr 001-071.indd 20C SO6/29/11 12:54 PM

Significant Changes to the IPC 2012 EditionCHANGE TYPE:405.3.1 Minimum Water Closet Compartment Size21405.3.1ModificationCHANGE SUMMARY: The minimum depth of a water closetcompartment containing a wall-hung water closet has been reduced from60 inches to 56 inches.Minimum Water ClosetCompartment Size2012 CODE: 405.3.1 Water Closets, Urinals, Lavatories, andBidets. A water closet, urinal, lavatory or bidet shall not be set closerthan 15 inches (381 mm) from its center to any side wall, partition,vanity or other obstruction, or closer than 30 inches (762 mm) centerto center between adjacent fixtures. There shall be at least a 21-inch(533-mm) clearance in front of the water closet, urinal, lavatory or bidetto any wall, fixture or door. Water closet compartments shall be not lessthan 30 inches (762 mm) in width and 60 inches (1524 mm) in depthfor floor mounted water closets and not less than 30 inches (762 mm) inwidth and 56 inches (1422 mm) in depth for wall hung water closets (seeFigure 405.3.1).CHANGE SIGNIFICANCE: A wall-hung nonaccessible water closetcompartment is now permitted to be 56 inches in depth, which is4 inches shorter in length than required for a compartment containinga floor-mounted water closet. T

hapter 1 of the International Plumbing Code (IPC) clarifi es how the code will be enforced by code offi cials. Defi nitions of plumbing code terminology are found in Chapter 2. General regula-tions in Chapter 3 identify requirements not listed in other