2PurposeTo review the contents, exemptions, exclusions and amendments pertaining to the newly adopted 2009 Uniform Plumbing Code as the Maine State Internal Plumbing Code.
3Obtaining a 2009 Uniform Plumbing Code International Association of Plumbing and Mechanical Officials4755 E. Philadelphia StreetOntario, CATelephone or IAPMO
4Web address to the Plumbers’ Examining Board Rules List of professionsPlumbersLaws and rulesRules chapter 4 Installation Standards
5Overview StatementThe Maine State Internal Plumbing Code shall be the 2009 Uniform Plumbing Code, with amendments and exclusions.Amendments and exclusions to the Maine State Internal Plumbing Code will be provided in Chapter 4 of the Plumbers’ Examining Board Rules.
6Overview continuedChapter 1, Wherever in this code reference is made to an appendix, the provisions in the appendix shall not apply unless specifically adopted.The appendices are intended to supplement the provisions of the installation requirements of this code.
7Chapter 1 Chapter One has been expanded and now includes: 101.3 Plans Required101.4 ScopeRepairs and Alterations101.5 Application to Existing Plumbing Systems102.2 Duties and Powers of the Authority Having Jurisdiction103.5 InspectionsTesting of Systems
8Chapter 2 Definitionsa. The board does not adopt Chapter 205.0, Confined Space.b. The board does not adopt Chapter Excess Flow Valve (EFV).c. The board does not adopt Chapter 208.0, Flammable Vapor or Fumes.d. The board amends Chapter 220.0, Roughing-In, as follows:(i) The installation of all parts of the plumbing system that can be completed prior to the installation of fixtures. This includes drainage, water supply, vent piping, and the necessary fixture supports.e. The board does not adopt Chapter 223.0, Unconfined Space.
9Chapter 2 additions 209.0 Gravity Grease Interceptors Grease Removal DevicesHydromechanical Grease InterceptorThese definitions reflect changes made to the grease interception sections in Chapter 10.
10NewWater Hammer Arrester – A device to absorb hydraulic shock, either of the air chamber or mechanical device design. A device designed to provide protection against hydraulic shock in the building water supply system.10
12Chapter 3 General Regulations a. The Board does not adopt section Ratproofingb. The board does not adopt Hangers and Supports for gas piping.c. The board adopts Chapter , Unions, with the following exception:(i) Approved unions shall be permitted to be used in drainage piping when accessibly located in the trap seal or between a fixture and its trap in the vent system, except underground or in wet vents, and at any point in the water supply system, and in gas piping as permitted by Section (4).d. The board does not adopt Chapter 320.0, Medical Gas and Vacuum Systems.
13Prohibited Fittings and Practices 311.1 Figure 3-15 Prohibited or Restricted Fittings13
14Section 316.1.8 Pressure-Lock type Connection 14
16Chapter 4 Plumbing Fixtures and Fixture Fittings Chapter 4 is adopted as written.Changes from the 2000 Maine State Internal Plumbing Code and the 2009 Uniform Plumbing Code include:Non-Water Urinals-Waterless Urinals402.4 Metered Faucets-Self Closing Faucets407.5 Setting (Exceptions)408.4 Closet rings moved from Chapter 7.414.5 & Limitation of hot water temperature for public lavatories and bidets.Shower and Tub-Shower Combination Control Valves shall be of the anti-scald type.Expansion of table 4-1 to include Retail or Wholesale Stores and smaller-type Public or professional buildings.
17Non-water UrinalsShall be listed and comply with the applicable standards referenced in Table Shall have a barrier liquid sealant to maintain a trap seal.Shall permit the uninhibited flow of waste through the urinal to the sanitary drainage system. Shall be cleaned and maintained in accordance with the manufacturer’s instructions after installation.Shall have a water distribution line rough-in to the urinal location to allow for the installation of an approved backflow prevention device in the event of a retrofit.17
18Prohibited Fixtures405.0No WC with invisible seal or walls that are not thoroughly washed at each dischargeTrough urinals and urinals with an invisible seal shall be prohibited.Exception: Non-water urinals.18
19Setting Water Closet 407.5 15" to center from side wall 30" center to centerSet level24" space in frontFlush-o-meter vacuum breaker 6" above highest part of fixture19
20WC for public use shall be elongated: WC for public use shall be elongated:For children shall be of suitable size:Seats:Smooth non-absorbentAll seats must be open front except within dwelling unitsProperly sized for bowl shall conform to the applicable standard referenced in Table l4-1.20
21Setting Urinals 407.5 12" from side wall 24" center to center Flushometer vacuum breaker critical level minimum 6" above the highest part of the fixture21
22Exception:The installation of paper dispensers or accessibility grab bars shall not be considered obstructions:22
23411.7 Minimum size shower 1024 square inches Exception No. 1:Showers that are designed tocomply with ICC A117.1Exception No. 2:The minimum required area and dimension shall not apply where an existing bathtub is replaced by a shower receptor having minimum overall dimensions of 30 inches (750 mm) in width and 60 inches (1,500 mm) in length.23
24Hot Water Temperature for Public Lavatories 413.1 Hot water delivered from public use lavatories shall be limited to a maximum temperature of 120°F by a device that conforms to ASSE 1070 or CSA B125.3.The water heater thermostatshall not be considered acontrol for meeting thisprovision:24
26Normal threshold of pain = 118° F Burning of skin = 122° F Hot Water TemperatureAverage shower = 100° FCold shower = 95° FHot shower = 105° FVery hot shower = 110° FNormal threshold of pain = 118° FBurning of skin = 122° F26
27Chapter 5 Water Heaters Chapter 5, Water Heaters a. The board only adopts the following two sections of Chapter 5. All other sections of Chapter 5 the board does not adopt.(i) Chapter 506.4, Indirect-Fired Water Heaters, which includes and(ii) Chapter 508.0, Other Water Heater Installation Requirements, which includes 508.1, 508.2, 508.3, and
28Chapter 6 Water Supply and Distribution Chapter 6 is adopted as written.Changes between the 2000 Maine State Internal Plumbing Code and the 2009 Uniform Plumbing Code include.Expansion of Tables 6-2 & 6-3, backflow prevention devices and 6-4, materials.605.5 Control valves on parallel water distribution systems.608.7 Vacuum Relief ValvesTables 6-7 and 6-8
29601.0 Hot and Cold Water Required. In occupancies where plumbing fixtures areinstalled for private use, hot water shall be requiredfor bathing, washing, laundry, cooking purposes,dishwashing or maintenance. In occupancies whereplumbing fixtures are installed for public use, hotwater shall be required for bathing and washingpurposes. This requirement shall not supersede therequirements for individual temperature controllimitations for public lavatories, bathtubs, whirlpoolbathtubs and shower control valves.29
30Has been expanded to include a new format and additional information: TABLE 6-2Has been expanded to include a new format and additional information:Device, assembly. Or methodApplicable standardsPollution (low hazard)Contamination (high hazard)Installation(page of the 2009 UPC)30
31Has been expanded to include a new format and additional information: TABLE 6-4Has been expanded to include a new format and additional information:MaterialBuilding supply and fittingsWater distribution pipe and fittingsReferenced Standards (Pipe)Referenced Standards (Fittings)(page 115 of the 2009 UPC)31
32605.5 A control valve shall be installed immediately ahead of each water-supplied appliance and immediately ahead of each slip joint or appliance supply. Parallel water distribution systems shall provide a control valve either immediately ahead of each fixture being supplied or installed at the manifold and shall be identified with the fixture being supplied.32
33Section 608.2 Excessive Water Pressure (new portion of) An approved expansion tank shall be installedin the cold water distribution pipingdownstream of each such regulator to preventexcessive pressure from developing due tothermal expansion and to maintain the pressuresetting of the regulator. The expansion tankshall be properly sized and installed inaccordance with the manufacturer’sinstructions and listing.33
34608.7 Vacuum Relief Valves. Where a hot-water storage tank or an indirect water heater is located at an elevation above the fixture outlets in the hot water system, a vacuum relief valve shall be installed on the storage tank or heater.34
35Building water supply systems where quick- Water Hammer.Building water supply systems where quick-acting valves are installed shall be providedwith water hammer arrester(s) to absorb highpressures resulting from the quick closing ofthese valves. Water hammer arrestors shall beapproved mechanical devices in accordancewith the applicable standard(s) referenced inTable 14-1 and shall be installed as close aspossible to quick-acting valves35
36Sizing of Residential Water Softeners TABLE 6-8Sizing of Residential Water SoftenersRequired Size of Number of BathroomSoftener Connection Groups Served13/4 in up to 2 (#2)1 in up to 4 (#3)1 Installation of a kitchen sink and dishwasher, laundrytray, and automatic clothes washer permitted withoutadditional size increase.2 An additional water closet and lavatory permitted.3 Over four (4) bathroom groups, the softener size shall beengineered for the specific installation.36
37Chapter 7 Sanitary Drainage Chapter 7 is adopted as written.Changes between the 2000 Maine State Internal Plumbing Code and the 2009 Uniform Plumbing Code include.Table 7-1 Materials for Drain, Waste, Vent Piping and Fittings.712.0 Testing Media. Plastic pipe shall not be tested with air.Policy Statement:
38Plumbers’ Examining Board March 9, 2011 Policy Statement The Plumbers’ Examining Board will allow the testing of plastic schedule 40 (DWV) (drainage, waste, vent) piping systems with 5 psi maximum of air. For safety purposes, when testing with air, an approved 6 psi relief valve is required. Co-extruded ABS and PVC schedule 40 (cellular core) piping systems with referenced standards ASTM F1488 and ASTMF 891 shall not be tested with air. PVC and CPVC building supply and water distribution piping systems shall not be tested with air.
39Referenced Standards (pipe) Referenced Standards (fittings) TABLE 7-1Materials for Drains, Waste, Vent pipe and Fittings. New format and Additional information:Underground DWVAboveground DWVBuilding SewerReferenced Standards (pipe)Referenced Standards (fittings)Page 126 of the 2009 UPC.39
41Sumps and Receiving Tanks 710.9 Dual pumps in public use occupancies shall have an audio and visual alarm, readily accessible, that signals pump failure or an overload.41
42712.0 Testing.712.1 Media. The piping of the plumbing, drainage, and venting systems shall be tested with water or air. The Authority Having Jurisdiction shall be permitted to require the removal of any cleanouts, etc., to ascertainwhether the pressure has reached all parts of the system. After the plumbing fixtures have been set and their traps filled with water, they shall be submitted to a final test.42
43Chapter 8 Indirect Wastes Chapter 8 can be adopted as written.There are no major changes between the 2000 Maine State Internal Plumbing Code and the 2009 Uniform Plumbing Code.Point of concern:814.0 Condensate waste and disposal
44811.2 Each waste pipe receiving or intended to receive the discharge of any fixture into which acid or corrosive chemical is placed, and each vent pipeconnected thereto, shall be constructed of Chlorinated Poly(vinyl-chloride) (CPVC), Polypropylene (PP), Polyvinylidene Fluoride (PVDF), chemical-resistant glass, high-silicon iron pipe, or lead pipe with a wall thickness of not less than one-eighth (1/8) inch (3.2 mm); an approved type of ceramic glazed or unglazed vitrified clay; or other approved corrosion-resistant materials.44
45Chapter 9 Ventsa. The board adopts Chapter 906.0, Vent Terminations, with the following amendments:(i) Each vent pipe or stack shall extend through its flashing and shall terminate vertically not less than six (6) inches (152 mm) two (2) feet above the roof nor less than one (1) foot (305 mm) from any vertical surface.(ii) Vent pipes shall be extended separately or combined, of full required size, not less than six (6) inches (152mm) two (2) feet above the roof or fire wall. Flagpoling of vents shall be prohibited except where the roof is used for purposes other than weather protection. Vents within ten (10) feet (3,048 mm) of any part of the roof that is used for such other purposes shall extend not less than seven (7) feet (2,134 mm) above such roof and shall be securely stayed.
46Chapter 9 Vents(iii) Frost or Snow Closure. Where frost or snow closure is likely to occur in locations having minimum design temperature below 0°F (-17.8°C), vent terminals shall be not less than two (2) inches (50 mm) in diameters, but in no event small than the required vent pipe. The change in diameter shall be made inside the building not less than one (1) foot (305 mm) below the roof in an insulated space and terminate not less than ten (10) inches (254 mm) two (2) feet above the roof, or as required by the Authority Having Jurisdiction.
47Chapter 9 Changes 901.2 Trap Seal Protection 908.2 Horizontal Wet Venting for Bathroom GroupsVent ConnectionSize of the wet vent911.0 Engineered Vent System911.2 Minimum Requirements of an engineered vent system.
48901.2 Trap Seal Protection.The vent system shall be designed to prevent a trap seal from being exposed to a pressure differential that exceeds one (1) inch of a water column (249 Pa) on the outlet side of the trap.48
49908.2 Horizontal Wet Venting for Bathroom Groups. Where Permitted. Water closets, bathtubs, showers and floor drains within one (1) or two (2) bathroom groups located on the same floor level and for private use shall be permitted to be vented by a wet vent. The wet vent shall be considered the vent for the fixtures and shall extend from the connection of the dry vent along the direction of the flow in the drain pipe to the most downstream fixture drain or trap arm connection to the horizontal branch drain. Each wet-vented fixture drain or trap arm shall connect independently to the wet- vented horizontal branch drain. Each individual fixture drain or trap arm shall connect horizontally to the wet-vented horizontal branch drain or shall be provided with a dry vent. The trap to vent distance shall be in accordance with Table Only the fixtures within the bathroom groups shall connect to the wet-vented horizontal branch drain. The water closet fixture drain or trap arm connection to the wet vent shall be downstream of any fixture drain or trap arm connections. Any additional fixtures shall discharge downstream of the wet vent system and be conventionally vented.49
50Vent Connection. The dry vent connection to the wet vent shall be an individual vent or common vent for the lavatory, urinal, bidet, shower, or bathtub. Only one (1) wet-vented fixture drain or trap arm shall discharge upstream of the dry-vented fixture drain connection.Size. The wet vent shall be sized based on the fixture unit discharge into the wet vent. The wet vent shall be not less than two (2) inches (50 mm) in diameter for four (4) dfu or less, and not less than three (3) inches (80 mm) in diameter for five (5) dfu or more. The dry vent shall be sized in accordance with Tables 7-3 and 7-5 based on the total fixtures units discharging into the wet vent.50
56Chapter 10 Traps and Interceptors Chapter 10 can be adopted as written.Changes between the 2000 Maine State Internal Plumbing Code and the 2009 Uniform Plumbing Code include.Table 10-1Prohibited trapsthrough Grease Interceptors and Hydromechanical Grease Interceptors. Including tables10-2 & 10-3FOG (Fats, Oils, and Greases) Disposal System.
57Traps vs. InterceptorsNomenclature Clarification Recent changes in codes and standards to clarify mixed terms.“Trap” has been eliminated in ASME Standards,Uniform plumbing Code (UPC), andCanadian Standards Association (CSA).The International Plumbing Code (IPC)“Interceptor” is deemed to be a more inclusive term“Interceptor” allows for a more precise distinction between devices.First official adoption was by IAPMO during its comprehensive rewrite of Chapter Ten (10) of the Uniform plumbing Code.57
58The Hydromechanical Grease Interceptor design type incorporates air entrapment, the buoyancy of grease in water and hydro mechanical separation with interior baffling for grease, FOG (fats, oils and grease) separation . Hydromechanical Grease Interceptors continuously separate the FOG (fats, oils and grease) at the velocity it enters the interceptor.The size of Hydromechanical Grease Interceptor is expressed in the gallons per minute flow (GPM) that the grease interceptor can accept and still remove 90 % plus, of the Fog (fats, Oils and grease) from the influent. The common sizes available today are 10, 15, 20, 25, 35, 50, 75, 100 GPM.58
61SIZING OF HYDROMECHANICAL GREASE INTERCEPTORS: The Uniform Plumbing Code (UPC) has two methods.1. Using Gravity Flow Rates (Table 10-22. Using Fixture Capacity (Table 10-2)61
62Hydro-mechanical Interceptor Sizing Using Gravity Flow Rates1 TABLE 10–2Hydro-mechanical Interceptor Sizing Using Gravity Flow Rates1Size of Grease InterceptorDiameter of GreaseWaste PipeMaximum Full PipeFlow (gpm)2One-Minute DrainagePeriod (gpm)Two-Minute Drainage2”20103”6075354”1251505”2302506”3755001 For interceptor sizing by fixture capacity see the example below.2 1/4” (.240) slope per foot based on Manning’s formula with friction factor N = .01262
63The Gravity Grease Interceptor design type incorporates two or more compartments in series, aminimum volume of 500 gallons and uses its largervolume of water to slow the flow velocity downallowing the time required for simple buoyancy ofgrease, FOG (fats, oils and grease) in water to causeseparation. That is why the physical size of theGravity Grease Interceptor is so much greater thanthe physical size of the Hydromechanical GreaseInterceptor.With both design types the key to proper sizingis understanding the “Size” nomenclature since it isdifferent for each type.The size of a Gravity Grease Interceptor is based on the actual volume of water the interceptor will hold expressed in gallons. Common Sizes available today are 500, 750, 1000, 1250, 1500, 2000, 3000 Gallons63
65The discharge from food grinders (garbage disposals) is almost universally required to bypass the grease interceptor.The food grinder (and the associated pre-rinse station at the dishwasher ) is one of the single greatest sources of FOG. Yet despite that fact, most codes forbid food grinders discharge from passing through a grease interceptor.Technologically there is no reason for the waste stream to bypass the grease interceptor if the solids have been removed.65
66Chapter 11 Storm Drainage a. The board does not adopt Chapter , Subsoil Drains.b. The board does not adopt Chapter , Building Subdrains..c. The board does not adopt Chapter , Areaway Drains.d. The board does not adopt Chapter , Window Areaway Drains.e. The board does not adopt Chapter , Filling Stations and Motor Vehicle Washing Establishments.f. The board does not adopt Chapter , Paved Areas.g. The board does not adopt Chapter , Subsoil Drains.h. The board does not adopt Chapter , Size of Roof Gutters.i. The board does not adopt Table 11-3, Size of Gutters.
67Chapter 12 Fuel PipingChapter 12, Fuel Piping. The board does not adopt Chapter 12, Fuel Piping.
68Chapter 13 Health Care facilities and Medical Gas and Vacuum Systems Chapter 13, Health Care Facilities and Medical Gas and Vacuum Systems. The board does not adopt Chapter 13, Health Care Facilities and Medical Gas and Vacuum Systems.
69Chapter 14 Referenced Standards Table 14-1 Chapter 14 is adopted as written.Changes between the 2000 Maine State Internal Plumbing Code and the 2009 Uniform Plumbing Code include.Expanded listings and listing agency references.
70The new Table 14-1 is substituted for the same in the 2009 UPC. CHAPTER 14MANDATORY REFERENCED STANDARDSTABLE 14-1The new Table 14-1 is substituted for the same in the 2009 UPC.Cross references and updates have been added national standards are now clearly identified, and Editorial revisions have been made.70
71Chapter 15 Firestop Protection Chapter 15 is adopted in its’ entirety.
72Chapter 16 Nonpotable Water Reuse Systems a. The board does not adopt Part I, Gray Water Systems, in its entirety.
73Chapter 16 Nonpotable Water Reuse Systems Part II Reclaimed Water Systems The board adopts reclaimed water system in its’ entirety.
741613.0 Reclaimed Water Systems – General. Part IIReclaimed Water Systems – General.(A) The provisions of Part II of this chapter shall apply to the installation, construction, alteration, and repair of reclaimed water systems intended to supply uses such as water closets, urinals, trap primers for floor drains, floor sinks, irrigation, industrial processes, water features and other uses approved by the Authority Having Jurisdiction. Potable water supplied as makeup water in these systems shall be protected against back-pressure and back-siphonage in accordance with Sections and 603.074
75(D) A reclaimed water system shall be designed by a person registered or licensed to perform plumbing design work.Definitions.Reclaimed Water - Nonpotable water the meets or as a result of treatment, meets federal requirements for its intended uses. The level of treatment and quality of the reclaimed water shall be approved by the Authority Having Jurisdiction.75
761617.0 Pipe Material/Pipe Identification. Reclaimed water systems shall comply with Sections andPipe Materials. Reclaimed water pipe, valves and fittings shall conform to the requirements of Sections 604.0, and76
771617.2 Color and Information. Reclaimed water systems shall have a purple background with blackuppercase lettering with the words “CAUTION:RECLAIMEDWATER, DO NOT DRINK.”InstallationSigns.(A) Commercial, Industrial and Institutional Room Entrance Signs. All rooms in commercial, industrial, and institutional occupancies using reclaimed water for water closets and/or urinals shall be identified with signs.77
78Appendix A-LThe provisions in the appendices shall not apply and shall be used only as a reference or guideline.
79Addresses email@example.com firstname.lastname@example.org Physical Address:78 Northern AvenueGardiner, Maine 04345Mailing address:#35 State House StationAugusta, ME