Purpose • To review the contents, exemptions, exclusions and amendments pertaining to the newly adopted 2009 Uniform Plumbing Code as the Maine State Internal Plumbing Code.
Obtaining a 2009 Uniform Plumbing Code • International Association of Plumbing and Mechanical Officials • 4755 E. Philadelphia Street • Ontario, CA 91761-2816 • Telephone 909-472-4100 or 1-800-85-IAPMO • www.iapmo.org
Web address to the Plumbers’ Examining Board Rules • www.maine.gov/professionallicensing • List of professions • Plumbers • Laws and rules • Rules chapter 4 Installation Standards
Overview Statement • The 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.
Overview continued • Chapter 1, 103.8.2. 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.
Chapter 1 • Chapter One has been expanded and now includes: • 101.3 Plans Required • 101.4 Scope • 18.104.22.168 Repairs and Alterations • 101.5 Application to Existing Plumbing Systems • 102.2 Duties and Powers of the Authority Having Jurisdiction • 103.5 Inspections • 103.5.3 Testing of Systems
Chapter 2Definitions a. The board does not adopt Chapter 205.0, Confined Space. • b. The board does not adopt Chapter 207.0 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.
Chapter 2 additions • 209.0 Gravity Grease Interceptors • Grease Interceptors • Grease Removal Devices • Hydromechanical Grease Interceptor • These definitions reflect changes made to the grease interception sections in Chapter 10.
New Water 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.
Chapter 3General Regulations • a. The Board does not adopt section 313.12.3 Ratproofing • b. The board does not adopt 314.7 Hangers and Supports for gas piping. • c. The board adopts Chapter 316.2.2, 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 1211.3.2(4). • d. The board does not adopt Chapter 320.0, Medical Gas and Vacuum Systems.
Figure 3-15 Prohibited or Restricted Fittings Prohibited Fittings and Practices 311.1
Chapter 4Plumbing 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: • 402.3.1 Non-Water Urinals-Waterless Urinals • 402.4 Metered Faucets-Self Closing Faucets • 407.5 Setting (Exceptions) • 408.4 Closet rings moved from Chapter 7. • 414.5 & 416.3 Limitation of hot water temperature for public lavatories and bidets. • 418.0 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.
402.3.1 Non-water Urinals Shall be listed and comply with the applicable standards referenced in Table 14-1. 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.
Prohibited Fixtures 405.0 No WC with invisible seal or walls that are not thoroughly washed at each discharge Trough urinals and urinals with an invisible seal shall be prohibited. Exception: Non-water urinals.
Setting Water Closet 407.5 15" to center from side wall 30" center to center Set level 24" space in front Flush-o-meter vacuum breaker 6" above highest part of fixture
408.2.2 WC for public use shall be elongated: For children shall be of suitable size: Seats: Smooth non-absorbent All seats must be open front except within dwelling units Properly sized for bowl shall conform to the applicable standard referenced in Table l4-1.
Setting Urinals 407.5 12" from side wall 24" center to center Flushometer vacuum breaker critical level minimum 6" above the highest part of the fixture
Exception: The installation of paper dispensers or accessibility grab bars shall not be considered obstructions :
411.7 Minimum size shower 1024 square inches Exception No. 1: Showers that are designed to comply with ICC A117.1 Exception 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.
Hot 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 thermostat shall not be considered a control for meeting this provision:
Hot Water Temperature Average shower = 100° F Cold shower = 95° F Hot shower = 105° F Very hot shower = 110° F Normal threshold of pain = 118° F Burning of skin = 122° F
Chapter 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 506.4.1 and 506.4.2. • (ii) Chapter 508.0, Other Water Heater Installation Requirements, which includes 508.1, 508.2, 508.3, 508.4 and 508.5.
Chapter 6Water 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 Valves • Tables 6-7 and 6-8
601.0 Hot and Cold Water Required. In occupancies where plumbing fixtures are installed for private use, hot water shall be required for bathing, washing, laundry, cooking purposes, dishwashing or maintenance. In occupancies where plumbing fixtures are installed for public use, hot water shall be required for bathing and washing purposes. This requirement shall not supersede the requirements for individual temperature control limitations for public lavatories, bathtubs, whirlpool bathtubs and shower control valves.
TABLE 6-2 • Has been expanded to include a new format and additional information: • Device, assembly. Or method • Applicable standards • Pollution (low hazard) • Contamination (high hazard) • Installation • (page 108-109 of the 2009 UPC)
TABLE 6-4 • Has been expanded to include a new format and additional information: • Material • Building supply and fittings • Water distribution pipe and fittings • Referenced Standards (Pipe) • Referenced Standards (Fittings) • (page 115 of the 2009 UPC)
605.5 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.
Section 608.2 Excessive Water Pressure (new portion of) An approved expansion tank shall be installed in the cold water distribution piping downstream of each such regulator to prevent excessive pressure from developing due to thermal expansion and to maintain the pressure setting of the regulator. The expansion tank shall be properly sized and installed in accordance with the manufacturer’s instructions and listing.
608.7 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.
609.10 Water Hammer. Building water supply systems where quick- acting valves are installed shall be provided with water hammer arrester(s) to absorb high pressures resulting from the quick closing of these valves. Water hammer arrestors shall be approved mechanical devices in accordance with the applicable standard(s) referenced in Table 14-1 and shall be installed as close as possible to quick-acting valves
TABLE 6-8 Sizing of Residential Water Softeners Required Size of Number of Bathroom Softener Connection Groups Served1 3/4 in. up to 2 (#2) 1 in. up to 4 (#3) 1 Installation of a kitchen sink and dishwasher, laundry tray, and automatic clothes washer permitted without additional size increase. 2 An additional water closet and lavatory permitted. 3 Over four (4) bathroom groups, the softener size shall be engineered for the specific installation.
Chapter 7Sanitary 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:
Plumbers’ Examining BoardMarch 9, 2011Policy StatementThe 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.
TABLE 7-1 • Materials for Drains, Waste, Vent pipe and Fittings. New format and Additional information: • Underground DWV • Aboveground DWV • Building Sewer • Referenced Standards (pipe) • Referenced Standards (fittings) • Page 126 of the 2009 UPC.
Sumps 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.
712.0 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 ascertain whether 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.
Chapter 8Indirect 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
811.2 Each waste pipe receiving or intended to receive the discharge of any fixture into which acid or corrosive chemical is placed, and each vent pipe connected 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.
Chapter 9Vents • a. The board adopts Chapter 906.0, Vent Terminations, with the following amendments: • (i) 906.1. 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) 906.3. 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.
Chapter 9Vents • (iii) 906.7. 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.
Chapter 9 Changes • 901.2 Trap Seal Protection • 908.2 Horizontal Wet Venting for Bathroom Groups • 908.2.2 Vent Connection • 908.2.3 Size of the wet vent • 911.0 Engineered Vent System • 911.2 Minimum Requirements of an engineered vent system.
901.2 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.
908.2 Horizontal Wet Venting for Bathroom Groups. 908.2.1 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 10-1. 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.
908.2.2 Vent 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. 908.2.3 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.