Amendments to the 2018 Uniform Plumbing Code are listed hereafter by section. The digits after the title and chapter digits are the section number of the Uniform Plumbing Code to which the amendment refers, e.g., 23.25.510.8 refers to section 510.8 of the Uniform Plumbing Code.
Plumbing provisions for swimming pools, spas and hot tubs shall be in accordance with the Uniform Swimming Pool, Spa and Hot Tub Code adopted by the State of Alaska.
(AO No. 2020-85, § 1, 10-27-2020)
Amend by adding the following definition:
Bathroom. Any room or space containing a bathtub, shower, combination bath/shower, hot tub, or swimming pool.
(AO No. 2020-85, § 1, 10-27-2020)
Amend by adding the following definition:
Health Care Facilities. Buildings or portions or buildings in which medical, dental, psychiatric, nursing, obstetrical or surgical care is provided.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 314.4 by adding, after the third sentence, the following:
Backfill material shall be ⅜-inch pea gravel or smaller. In the case of cast iron drain, waste and vent piping, the backfill material shall be ¾-inch gravel and earth or smaller.
(AO No. 2020-85, § 1, 10-27-2020)
Amend Chapter 3 by adding section 321 as follows:
321.0 Mezzanines and platforms.
Every mezzanine or platform containing appliances or equipment requiring access more than 10-feet 6-inches above the ground or floor level shall be made accessible by a stairway or ladder fastened to the structure. The ladder shall be constructed with:
1.
Rung spacing not to exceed 14 inches on center.
2.
Toe spacing not less than 6 inches deep.
3.
At least 18-inch spacing between rails.
4.
Rungs at least 0.75 inches in diameter capable of withstanding a 300 lb. load.
5.
Offset sections and landings capable of withstanding 100 pounds per square foot when height exceeds 30 feet.
(AO No. 2020-85, § 1, 10-27-2020)
Add the following to the end of the sentence:
bus stations, cocktail lounges, bars, concert halls, sports arenas, theaters, shopping malls, churches, and grocery stores.
(AO No. 2020-85, § 1, 10-27-2020)
Add the following to the end of the section:
The access opening shall be a minimum of 16 inches by 16 inches, although alternate access arrangements may be considered. The intent is the pump can be easily and safely removed. Pumps shall be located so the supporting or securing bolts are no more than 2-feet from the access opening. The access panel may be caulked in place but shall remain easily removable. If removal of a pump motor is in question, the contractor may be required to remove the pump motor to demonstrate proper access.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 418 "Floor Drains" by adding a subsection as follows:
418.6 Unvented garage floor drains.
418.6.1 General.
A maximum of three unvented floor drains may be installed in a residential garage serving a single-family home or duplex. Each floor drain shall be 2-inch minimum with 3-inch minimum trap and trap arm. No other plumbing fixtures may be connected to the garage drain piping.
418.6.2 Inspections.
Underground inspections of these floor drains are not required, but spot checks may be made by inspectors. If requested, MOA staff performs this inspection at no additional fee.
(AO No. 2020-85, § 1, 10-27-2020)
Amend Chapter 4 by adding section 423 as follows:
423.0 Minimum hot water supply temperature.
The minimum hot water temperature to showers, tub and shower combinations and tub fillers shall be 110°F, except for engineered systems.
(AO No. 2020-85, § 1, 10-27-2020)
Add an exception as follows:
Exception: Tank type gas and electric water heaters that are a minimum of 5 gallons and a maximum of 10 gallons require only one approved seismic strap placed as close to the middle of the heater as possible, measured vertically, without blocking access to the controls.
(AO No. 2020-85, § 1, 10-27-2020)
Replace Section 507.5 with the following:
507.5 Drainage pan.
Water heaters shall be installed in a watertight pan of corrosion-resistant material. The pan shall be equipped with a minimum ¾-inch diameter drain discharging to an approved location. Water heater enclosures shall be provided with an approved floor drain.
Exceptions:
1.
A floor drain is not required when a water heater is installed in a garage and the garage floor slopes to the exterior.
2.
A floor drain is not required if a water heater is equipped with a listed safety device to control flooding.
3.
A floor drain is not required when a water heater is installed in an attic or above a drop ceiling and the pan is drained to an approved location.
4.
A pan is not required when a water heater is installed on a concrete slab on grade.
5.
A pan is not required in a garage, where a corrosion-resistant material is placed under the water heater provided that it covers the entire platform and extends to all walls adjoining the platform and turning up the walls a minimum of two inches.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 507.5 by adding the follow section:
507.5.1 Water heaters located in manufactured (mobile) homes.
A.
Installation of a water heater in a compartment off a bedroom shall be acceptable if the water heater was factory installed, if the compartment is sealed from the bedroom by a panel screwed to the wall, and if the combustion air is taken from a source outside of the bedroom and complies with Uniform Plumbing Code.
B.
Replacement water heaters shall be tested, approved, and listed for use in mobile homes. Combustion air shall be provided in accordance with the International Fuel Gas Code.
(AO No. 2020-85, § 1, 10-27-2020)
A. 
Revise Item (1) to read as follows:
(1)
Air for combustion and ventilation is provided where required, in accordance with the provisions of the International Fuel Gas Code (IFGC), Chapter 3. Where existing facilities are not adequate, they shall be upgraded to meet the IFGC.
B. 
Revise Item (2) to read as follows:
(2)
The installation of components and appliances meet the combustible material provisions of the IFGC, Chapter 5.
C. 
Revise Item (3) to read as follows:
(3)
The venting system is constructed and sized in accordance with the provisions of the IFGC, Chapter 5. Where the existing venting system is not adequate, it shall be upgraded to comply with the IFGC.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 603.0 by adding the following:
PURPOSE AND SCOPE: The purpose of this section is to protect the public health by controlling or eliminating actual or potential cross-connections. The control or elimination of cross-connections shall be in accordance with this code, the current edition of the Cross-Connection Control Manual published by the Pacific Northwest section of The American Water Works Association and the Manual of Cross-Connection Control published by the University of Southern California Foundation for Cross-Connection Control. In the event a conflict exists between the technical publications adopted herein and the Uniform Plumbing Code, the most stringent provision shall apply.
UNSAFE FACILITIES: The Municipality may refuse to furnish water and may discontinue services to any premises where plumbing facilities, appliances, or equipment using water are dangerous, unsafe, or not in conformity with the water utility tariff or other related municipal ordinances. No potable water service connection to any premises shall be installed or continued in use by a purveyor unless the potable water supply is protected by all necessary backflow prevention devices and assemblies. The installation or maintenance of a cross-connection, endangering the quality of the purveyor's water supply, shall be unlawful and is prohibited.
ADMINISTRATIVE AUTHORITY: The Building Official or authorized representative.
PURVEYOR: The operator or owner of a water supply.
PREMISES: Real property, including any house or building thereon, located within the Municipality of Anchorage.
CROSS-CONNECTION INSPECTIONS: No water shall be delivered to any structure hereafter built within the Municipality of Anchorage until it is inspected by the Administrative Authority for possible cross-connections and approved as being protected from such cross-connections.
Inspections shall be made periodically of all potentially hazardous buildings, structures, or improvements of any nature now receiving water through the municipal water system, for the purpose of ascertaining whether cross-connections exist. Such inspections shall be made by the Administrative Authority.
Any building modification requiring a plumbing or mechanical permit may require a cross-connection inspection and compliance.
POSSIBLE CROSS-CONNECTIONS: Backflow prevention assemblies or devices shall be installed in any premises where, in the judgment of the Administrative Authority, the nature and extent of activities, or the materials used or stored on the premises, may present a hazard to the potable water supply in the event a cross-connection were to be made; even though such cross-connection has not been made. Such circumstances include, but are not limited to:
1.
Premises having an auxiliary water supply.
2.
Premises having intricate plumbing arrangements making it impractical to ascertain whether or not cross-connections in fact exist.
3.
Premises where entry is restricted so inspection for cross-connections cannot be made with sufficient frequency or on sufficiently short notice to assure cross-connections do not exist.
4.
Premises having a repeated history of cross-connections being established or re-established.
5.
Premises on which any substance is handled under pressure, so as to permit entry into the water supply. This shall include the handling of process waters and cooling waters.
6.
Premises where materials of a toxic or hazardous nature are handled in such a way if back siphonage should occur, a health hazard might result.
The following facilities, or portions of a building containing one of the listed facilities, when connected to a potable water supply, require backflow prevention assemblies or devices unless the authority having jurisdiction determines no hazard exists. An example of a facility within a building is a dental office in a multi-story office building. For this application, a reduced pressure principle backflow preventer is required to be installed on the hot and cold water serving the dental office and backflow prevention is not required on the main supply to the building. This protects both the city main and the occupants in the building:
Hospitals, mortuaries, and clinics;
Laboratories;
Metal plating industries;
Piers and docks;
Sewage treatment plants;
Food or beverage processing plants;
Chemical plants;
Petroleum processing or storage plants;
Radioactive material processing plants, nuclear reactors, or other facilities where radioactive materials may be utilized;
Manufacturing facilities;
Car wash facilities;
Water systems not within the definition of potable water supply;
Fire sprinkler systems;
Medical/dental facilities;
Waterfront facilities;
Irrigation systems;
Laundries and dry cleaners;
High rise or other buildings above system pressure which require booster pumps; and
Sand, gravel and concrete plants or other material processing plants.
(AO No. 2020-85, § 1, 10-27-2020)
Amend by adding the following:
Backflow assemblies and devices shall be considered approved if they successfully passed both the laboratory and field evaluation tests conducted by the University of Southern California Foundation for Cross-Connection Control.
(AO No. 2020-85, § 1, 10-27-2020)
Replace section 603.4.8 "Drain Lines" with the following:
603.4.8 Area drain sizing for backflow assemblies. For new building construction, backflow devices or assemblies with drainage (reduced pressure principle assemblies) shall be provided with an area drain, as listed below.
Backflow Device Size
Area Drain Waste Line Minimum Size
1" and less
2"
1¼"—2"
3"
2½"—3"
4"
4" and greater
6"
Exception: Area drain size is not required to be larger than building sewer service line
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 603.5.6 by adding the following subsection:
603.5.6.4 Lawn irrigation.
The Uniform Plumbing Code regulates the installation of these types of plumbing systems up to and including the required type(s) of backflow preventer. A permit, plan check, and inspection are required to ensure the potable water piping is sized correctly for the number of fixture units effected by such a system and required piping material and backflow preventer(s) are installed. The installation downstream of the required backflow preventer is not regulated by the plumbing code and is considered non-potable water piping. Installation of backflow preventers and/or vacuum breakers on public systems shall be done by a plumbing contractor properly licensed with the Municipality of Anchorage. Private installations require either a plumbing contractor or a legal owner complying with all the requirements in the Anchorage Administrative Code.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section by adding a second paragraph to read as follows:
Installation, operation or use of air conditioning or cooling units employing water or other fluid as a cooling agent without a recovery and recirculation unit is prohibited.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 603.5.10 as follows:
603.5.10 Steam or hot water boilers. Potable water connections to hot water boilers shall be protected from backflow by a minimum double check valve with intermediate vent backflow prevention assembly complying with ASSE 1012. Potable water connections to steam boilers shall be protected from backflow by a minimum reduced pressure principle backflow prevention assembly in accordance with Table 603.2. Where chemicals are introduced into the system a reduced pressure principle backflow prevention assembly shall be provided in accordance with Table 603.2.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 603.5 by adding section 603.5.22 as follows:
603.5.22 Potable water supply to dental chairs. Potable water supply to each individual dental chair shall be protected at a minimum by a Spill-Resistant Pressure Breaker complying with an ASSE 1056 backflow prevention device.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 603.5 by adding section 603.5.23 as follows:
603.5.23 Hydronic heating/cooling. Systems with heat transfer fluids containing plain water or water/propylene glycol mixture require a minimum double check valve with intermediate atmospheric vent backflow preventer, complying with ASSE 1012, to be installed on any directly connected potable water makeup piping to the system. In addition, the below listed requirements apply when a system contains propylene glycol:
1.
Water/propylene mixture shall contain a food grade powder dye. (A suitable example is FD+C Powder Dye.) Liquid food coloring is not acceptable due to its potential dissipation into the system.
2.
A warning tag shall be installed on the backflow preventer stating the following information:
 
A.
System contains propylene glycol - use no other substitute.
 
B.
Do not add ethylene glycol or automotive anti-freeze of any type.
 
C.
No high hazard toxic chemicals permitted to be added to this system.
Systems having a heat transfer fluid containing Ethylene Glycol (approved for such use) require minimum protection of the potable water makeup system by installation of a physical air gap or a reduced pressure principal backflow preventer.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 603.5 by adding section 603.5.24 as follows:
603.5.24 Steam systems.
Due to the potential addition of toxic chemicals in any steam system, the minimum protection for the potable water makeup shall be by installation of a physical air gap or a reduced pressure principal backflow preventer.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 603.5 by adding section 603.5.25 as follows:
603.5.25 Cooling towers. Cooling towers obtaining makeup water from a potable source shall have a reduced pressure principal backflow preventer or air gap separation installed at the source of the potable water.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 603.5 by adding section 603.5.26 as follows:
603.5.26 Buildings over 30 feet in height. Buildings with water piping exceeding 30 feet in height measured from grade plane as defined by the Building Code to the highest portion of the piping system shall be equipped with a Double Check Valve Assembly on the main water supply to the building.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 603.5 by adding section 603.5.27 as follows:
603.5.27 Commercial hose bibbs. Hose bibbs within facilities that have a potential for a high hazard cross-connection such as automotive and maintenance shops and any facility where chemicals are used or stored in the vicinity of the hose bibb shall be protected by a minimum pressure vacuum breaker or spill-resistant vacuum breaker.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 603.5 by adding section 603.5.28 as follows:
603.5.28 Steam producing kitchen appliances. Steam producing kitchen appliances shall be protected from backflow by a minimum double check valve with intermediate vent backflow prevention device complying with ASSE 1012.
(AO No. 2020-85, § 1, 10-27-2020)
A. 
Add the following sentence:
Nonmetallic piping shall not be used for cold water building supply distribution systems outside of a building.
B. 
Add the following exception:
Exception: PVC or HDPE water service pipe 4-inch in diameter and greater may extend from the utility main horizontally into the footprint of the building. The piping shall transition underground to an approved metallic pipe at a 90-degree fitting. The PVC and HDPE pipe and fittings shall comply with the latest version of the Anchorage Water and Wastewater Utility (AWWU) Design Construction Practice Manual (DCPM).
(AO No. 2020-85, § 1, 10-27-2020)
Replace section 604.10 with the following:
604.10 Plastic materials.
Plastic piping materials shall not be used for water service piping from the street service main, private well, or other water source to a building or premises.
Exception: PVC or HDPE water service pipe 4-inch in diameter and greater may extend from the utility main horizontally into the footprint of the building. The piping shall transition underground to an approved metallic pipe at a 90-degree fitting. The PVC and HDPE pipe and fittings shall comply with the latest version of the Anchorage Water and Wastewater Utility (AWWU) Design Construction Practice Manual (DCPM).
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 606.3 by adding the following:
Shutoff valves located in a crawlspace shall be visible and shall be located within 10-feet of the crawl space access hatch/door.
(AO No. 2020-85, § 1, 10-27-2020)
Add the following exception:
Exception: Brazing shall not be required on non-pressurized, non-potable piping such as trap primers. Where joints are permitted, they shall be of the approved type.
(AO No. 2020-85, § 1, 10-27-2020)
Revise the paragraph to read as follows:
Upon completion of a section or of the entire hot and cold water supply system, the system shall be tested and proved tight under a water pressure not less than the working pressure under which it is to be used. The water used for tests shall be obtained from a potable source. A 50 psig air pressure may be substituted for the water test. In either test method, the piping shall withstand the test without leaking for a period of not less than 15 minutes.
(AO No. 2020-85, § 1, 10-27-2020)
Add the following:
Properly sized expansion tanks approved for potable water may be used in a single-family or duplex residence in lieu of water hammer arresters. Such expansion tanks shall be installed on the cold water piping between the residence shutoff valve and each water heater location. In the event the expansion tank(s) do not eliminate water hammer, mechanical water hammer devices will be required. Examples of quick-acting valve locations include, but are not limited to, dishwasher, clothes washer, toilet ballcock, icemaker, and any single handle faucet.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 609 by adding section 609.12 as follows:
609.12 Crawlspace water supply access.
An unobstructed clear passageway no less than 40 inches high by 22 inches wide is required from the crawlspace access to the water supply line entrance.
(AO No. 2020-85, § 1, 10-27-2020)
Amend Chapter 6 by adding section 613 as follows:
613.0 Indoor water meter setter.
All newly constructed single family, duplex and triplex residences shall install an approved indoor water meter setter with meter idler or a removable section of pipe to facilitate the future installation of water meters in a horizontal position. It shall be located in the vicinity of the main supply full-way valve, ahead of any branch lines and shall also have a valve on the outlet side. An easily accessible frost-proof area with adequate clearances shall be provided for meter installation, maintenance or removal. "Easily accessible" shall be considered an open area not concealed by an appliance, furnace, water heater or standard building material. When the meter is installed in a crawlspace, the maximum distance from the access opening to the meter shall not exceed 10-feet.
A horizontal section of pipe may be used in lieu of the indoor meter setter provided the pipe is equal in length to a water meter of the same size including meter couplings, but in no case shall it be less than 24 inches in length. The piping shall be supported to provide a permanent support for the water meter when installed.
When the water tariff is revised to allow the metering of these residences, the utility shall furnish two meters and remote feed-outs at its expense and its crews shall install remote read-out meters at the time of actual meter installation.
(AO No. 2020-85, § 1, 10-27-2020)
Amend the second sentence in paragraph 704.3 to read as follows:
A floor drain or flush mounted floor sink shall be provided within 5 feet of the fixture, and the fixture…
(AO No. 2020-85, § 1, 10-27-2020)
Replace the first sentence of section 712.1 with the following:
The piping of the plumbing, drainage, and venting systems shall be tested with water or air. The air test shall be a minimum 5 psig and shall be performed with gauges of 0.20 psi incrementation or less.
(AO No. 2020-85, § 1, 10-27-2020)
Delete first paragraph and substitute the following:
Cleanouts shall be placed at the end of building drains, 2-feet outside of the building and shall be of same material as the building drain.
(AO No. 2020-85, § 1, 10-27-2020)
Amend Chapter 7 by adding section 724.0 as follows:
724.0 Building drain access.
An unobstructed clear passageway no less than 40 inches high by 22 inches wide is required from the crawlspace access to the building drain entrance.
(AO No. 2020-85, § 1, 10-27-2020)
Amend by adding the following at end of the paragraph:
This section does not apply to dwellings that fall under the scope of the IRC.
(AO No. 2020-85, § 1, 10-27-2020)
Amend item (1) by adding the following sentence:
This section does not apply to dwellings that fall under the scope of the IRC.
(AO No. 2020-85, § 1, 10-27-2020)
Amend Chapter 8 by adding section 815.0 as follows:
815.0 Soda fountains, condensates, drip pans, ice machines, and other similar equipment.
A.
If the drain outlet for this type of equipment is below or remotely located from an approved point of disposal, the equipment may drain by gravity to a single pump, lift station receiver based on the following:
 
1.
A "Little Giant" condensate unit or equal is acceptable for lift station receiver. The pump shall be appropriately sized for the required condition.
 
2.
The equipment drain outlet or tailpiece may not exceed 1-inch I.D.
 
3.
The discharge pipe and fittings from the lift station receiver shall be a material approved for drainage piping and shall be piped to an approved indirect waste receptor per section 701.
B.
Vending company employees may install the drainage piping from the equipment they install to an approved point of disposal, provided the equipment drain pipe from the outlet of the tailpiece to a lift station receiver or approved point of disposal does not exceed 5-feet measured along the centerline of the pipe and such piping is installed in accordance with this code.
C.
If the equipment installed requires a water supply, it shall be provided by a properly licensed plumber to within 10-feet of the equipment, complete with any required backflow prevention device. The vendor employee may make the water connection from that point to the equipment.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 906 by adding section 906.8 as follows:
906.8 Roof Terminations. For roof construction regulated by the International Residential Code:
1.
No roof penetration shall be located in required valley ice barrier.
2.
All roof penetrations shall be located a minimum of 6-feet from valley centerline and 4-feet from the exterior wall line measured on a horizontal plane, excluding attic ventilation.
(AO No. 2020-85, § 1, 10-27-2020)
913.1 General. Vent systems utilizing Air Admittance Valves (AAV) shall comply with this section. Individual and branch-type air admittance valves shall conform to ASSE 1051.
913.2 Installation. The valves shall be installed in accordance with the requirements of this section and the manufacturer's instructions. Air admittance valves shall be installed after the required DWV testing has been performed.
913.3 Permitted Use. The use of AAVs shall be limited to the following circumstances:
913.3.1. Island Fixtures. Where a group of sinks and drains, not exceeding a total of 4 drainage fixture units, are remote from a wall extending to the ceiling.
913.3.2. Where a group of fixtures, not exceeding a total of 4 drainage fixture units, is more than a 30-foot horizontal radius from another plumbing fixture or plumbing vent of adequate size.
913.3.3. Additional locations when submitted and approved by the AHJ by submitting a "Request for Alternate Design, Materials, or Methods of Construction".
913.4 Where Permitted. Individual and branch-type air admittance valves shall vent only fixtures that are on the same floor level and connect to a horizontal branch drain. Where the horizontal branch drain is located more than four stories below the top of a waste stack, the horizontal branch shall be provided with a relief vent that shall connect to a vent or extend outdoors to the open air. The relief vent shall connect to the horizontal branch drain between the waste stack and the most downstream fixture drain connected to the horizontal branch drain. The relief vent shall be sized in accordance with Section 904 and installed in accordance with Section 905. The relief vent shall be permitted to serve as the vent for other fixtures.
913.5 Location. Individual and branch-type air admittance valves shall be located not less than 4 inches above the horizontal branch drain or fixture drain being vented. The air admittance valve shall be located within the maximum developed length permitted for the vent. The air admittance valve shall be installed not less than 6 inches above insulation materials.
913.6 Access and Ventilation. Access shall be provided to all air admittance valves. Such valves shall be installed in a location that allows adequate volumes of air to enter the valve. AAVs installed in interior walls shall be provided with a removable grille/louver that is of adequate size to replace the valve through the opening.
913.7 Size. The air admittance valve shall be rated in accordance with the standard for the size of the vent to which the valve is connected and per the manufacturer's recommended sizing guidelines.
913.8 Vent Required. Within each plumbing system, not less than one vent shall extend through the roof in accordance with Chapter 9.
913.9 Prohibited Installations. Air admittance valves shall not be installed in non-neutralized chemical waste systems as described in Chapter 8. Air admittance valves shall not be located in spaces utilized as supply or return air plenums. Air admittance valves shall not be used to vent sumps or tanks except where the vent system for the sump or tank has been designed by an engineer. Air admittance valves shall not be installed on outdoor vent terminals for the sole purpose of reducing clearances to gravity air intakes or mechanical air intakes. Air admittance valves shall not be installed in cold attics, exterior walls, or where exposed to freezing temperatures. Air admittance valves shall not be installed within fire rated assemblies. Air admittance valves shall not be installed to vent water closets.
(AO No. 2021-88(S), § 12, 2-15-2022)
Add ** after "Horizontal Lengths of Trap Arms" and add below Table 1002.2 the following note:
** Trap arms for residential floor drains may be extended beyond the limits of Table 1002.2 to where they pass under the nearest wall before installing the required vent.
(AO No. 2020-85, § 1, 10-27-2020)
Amend by adding the following words to the first sentence after the words "draining from fixtures":
"such as pot sinks (two-and three-compartment), scullery sinks, dishwashing sinks, silverware sinks,"…
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 1014.1 by adding section 1014.1.4 as follows:
1014.1.4 Hood washdown. Discharge from Type 1 hood washdown shall be discharged through an approved grease Interceptor in accordance with AWWU and AHJ requirements.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 1014.1 by adding section 1014.1.5 as follows:
1014.1.5 Grease Producing Fixtures. A grease interceptor shall be provided within 50 feet of grease producing fixtures.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 1014.1 by adding section 1014.1.6 as follows:
1014.1.6 External Cleanouts. Where hydromechanical grease interceptors are installed, an external manway shall be provided for cleaning of utility sewer piping. The manway shall be sized and installed in accordance with the utility requirements and the Authority Having Jurisdiction.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 1014.1 by adding section 1014.1.7 as follows:
1014.1.7 Piping Slope. Drain piping upstream of the grease interceptor shall be sloped at a minimum of ¼-inch per foot of horizontal travel.
(AO No. 2020-85, § 1, 10-27-2020)
A. 
Delete from the first sentence "or into a combined sewer system where a separate storm sewer system is not available."
B. 
Delete from the second sentence "In the case of one-and two-family dwellings," and "such as streets or lawns".
(AO No. 2020-85, § 1, 10-27-2020)
Replace the first sentence with the following:
Roof areas of a building shall be drained by roof drains, gutters, scuppers, or sheet flow off the edge of the roof.
(AO No. 2020-85, § 1, 10-27-2020)
Revise 1101.12.2.2.2 to read as follows:
1101.12.2.2.2 Combined system.
The secondary roof drains may connect to the horizontal portion of the primary drain a minimum of 3 feet downstream from the primary drain. Additionally, an approved flexible connector shall be installed on each roof drain per the manufacturer's installation instructions or a swing joint configuration may be used (see detail "A" of MOA Handout P.02). When this combined system is used, an overflow line shall be installed in the drain line and run to the exterior of the building above grade to an appropriately designed overflow drain or scupper system to allow sheet flow from the drain line to surface in the case of a below grade freeze-up of the main drain line or storm main. The primary storm drainage system shall connect to an underground public storm sewer or discharge to an approved location.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 1207 by adding subsection 1207.2 as follows:
1207.2 Temporary gas installations - permit required.
A.
Temporary gas approval is given to allow "comfort heating" appliances to be used to provide temporary heat to a building or building site prior to the completion of the building's primary heating system.
B.
The most commonly used appliance is a natural gas portable space heater. Other comfort heat appliances allowed for temporary heat purposes are warm air furnaces, boilers, and unit heaters. It is NOT the policy of the Building Safety Division or Enstar Natural Gas Company to allow "decorator fireplaces" or "ranges" to be utilized as temporary heat for buildings. These appliances are not designed or "listed" for such purpose.
C.
All appliances used to provide temporary heat for buildings shall be installed in accordance with the manufacturers' instructions and terms of their listing, with particular attention being paid to the clearances to combustibles from the top, bottom, back, and sides of these appliances.
D.
Unit heaters used for temporary heat shall be installed per manufacturers' instructions and listed clearances to combustibles from the top, bottom, front, back, and sides of these appliances. The vent connector shall be graded at ¼-inch per foot slope upward to the outside and it shall be changed to "B" vent at the wall penetration. The "B" vent must maintain its listed clearance to combustibles, extend a minimum of 5-feet vertically, and be secured.
E.
Furnaces used for temporary heat shall comply with the same requirements as for unit heaters as stated above. In addition, the return air for the furnace shall be ducted a minimum of 10-feet from the furnace.
F.
Portable space heaters shall be provided with one hundred percent outside air to the back end of the heater. In most cases, the gas regulator attached to these heaters shall be piped to the outside. If the regulator vent discharges, it shall not be allowed to discharge into the space being heated.
G.
Gas hose used for temporary heaters shall be a type approved by the Building Safety Division and all manufacturers' listed clearances shall be maintained. The hose shall have an internal wire mesh or braid and be "kink proof". Supporting wire shall run the full length of the hose. Each time a hose is moved from one lot to another, it shall be retested with 60 psig air pressure.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 1207 by adding section 1207.3 as follows:
1207.3 Temporary gas installations—Permit not required.
A permit and inspection shall not be required for residential temporary construction heat serving tented footings and foundations. This provision is for thawing ground and curing concrete, not comfort heat for workers, such as plumbers installing underground. This allowance is limited to portable "SURE FLAME" type heaters and not intended for unit heaters, furnaces, and boilers with special venting considerations. All heaters and hoses shall be of the approved type. Heaters shall be listed by an approved listing agency. All hoses shall have an internal wire mesh or braid and be "kink proof". Supporting wire shall run the full length of the hose. One hundred percent outside air shall be provided to heater at all times. Listed clearances to combustibles shall be maintained. A licensed journeyman plumber or gasfitter shall perform all work.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 1208.5 by adding section 1208.5.2 as follows:
1208.5.2 Medium pressure gas. The installation of a medium pressure gas system (2 psig or 5 psig) within a building must be pre-approved by the local gas utility. Steel piping shall be welded. Test pressure for all medium pressure gas piping shall be 60 psig.
Exception: Medium pressure gas piping within mechanical rooms that house the equipment being served shall be threaded or welded in accordance with 1208.6.11. Threaded piping shall not be concealed within the space.
Amend section 1208.5 by adding section 1208.5.3 as follows:
1208.5.3 CSST medium pressure gas.
The installation of a CSST medium pressure gas system (2 psig or 5 psig) within a building must be pre-approved by the local gas utility. Test pressure for all medium pressure gas piping shall be 60 psig. Joints shall be limited to the meter connection and appliance regulator being served. Intermediate joints are not allowed without prior approval.
(AO No. 2020-85, § 1, 10-27-2020)
Amend by adding the following at the end of the paragraph:
All joints in underground ferrous piping shall be welded when any of the following conditions apply:
1.
The nominal pipe diameter is 2½ inches or larger.
2.
The pipe is installed under a driveway.
3.
Medium pressure systems.
(AO No. 2020-85, § 1, 10-27-2020)
Amend by adding the following sentences at the end of the paragraph:
All joints in underground copper shall be brazed with wrought copper fittings. No underground joints shall be permitted unless the underground length of run exceeds 60-feet. All pipe to tubing transitions shall be made above ground.
(AO No. 2020-85, § 1, 10-27-2020)
A. 
Amend Item 2 by deleting "or cast iron".
B. 
Delete Item 5.
C. 
Add Item 9 as follows:
9.
Right and left nipple couplings. Where unions are necessary, right and left nipples and couplings shall be used. Ground joint unions may be used at exposed fixture, appliance, or equipment connections and in exposed exterior locations immediately on the discharge side of a building shutoff valve.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 1208.8.2 by adding section 1208.8.2.1 as follows:
1208.8.2.1 Manufactured home connections. Pounds to inches water column regulators serving mobile homes and connected to copper tubing shall be attached to the exterior of the mobile home and shall not be located under the mobile home.
(AO No. 2020-85, § 1, 10-27-2020)
Amend by adding the following:
When the regulator instructions do not specify an installation elevation, the regulator shall be installed 12 inches minimum above the anticipated snow depth to avoid the accumulation of snow and ice.
(AO No. 2020-85, § 1, 10-27-2020)
Amend by adding the following sentence to the end of the paragraph:
Plastic and copper gas piping shall have at least 18 inches of earth cover or other equivalent protection.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 1210.1 by adding section 1210.1.8 as follows:
1210.1.8 Ground penetrations. At all points where fuel gas piping enters or leaves the ground there shall be installed, above ground, an approved or listed fuel gas piping connector capable of absorbing a 6-inch displacement in any direction, due to frost heave action.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 1210.1 by adding section 1210.1.9 as follows:
1210.1.9 Fuel gas piping connections. Fuel gas piping connectors listed for outdoor use may be used between the meter and house main. No flex connector may pass through any wall, partition, panel, or other barrier. Solid fittings shall be used on each end.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 1210.1 by adding section 1210.1.10 as follows:
1210.1.10 Frost heave protection for copper tubing. At points where copper tubing type systems enter or leave the ground, they shall be protected from frost heave action by the incorporation of a suitable above ground 6-inch radius loop, or listed fuel gas piping connector of equal size.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 1210.2.1 by replacing the last sentence with the following:
Cutting and notching of beams and joists shall be in conformance with the manufacturer's requirements, or the approval of a licensed design professional.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 1210.2.4 by adding section 1210.2.4.4 as follows:
1210.2.4.4. Above-ground outdoor piping. Piping installed outdoors shall be elevated not less than 5½ inches above ground or roof surface. Piping installed across a roof surface shall be securely supported and located where it will be protected from physical damage. Where passing through an outside wall, the piping shall be protected against corrosion by coating or wrapping with an inert material. Where piping is encased in a protective pipe sleeve, the annular space between the piping and the sleeve shall be sealed.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 1301 by adding section 1301.7 as follows:
23.25.1301.7 Veterinary clinics. The material requirements, installation, and testing practices of NFPA 99 for Category 3 gas and vacuum systems shall apply to veterinary clinics except third party verification is not required.
(AO No. 2020-85, § 1, 10-27-2020)
Amend section 1308 by adding section 1308.7 as follows.
1308.7 Vacuum systems for dental offices. The purpose of this amendment is to point out and clarify the requirements for wet vacuum systems in dental offices. Refer to NFPA 99C (most current edition) for full text on these requirements.
A.
Category 3 wet vacuum systems (in dental offices) may be installed using schedule 40 PVC with pressure fittings. Piping and fittings installed in plenums shall have a flame spread index of not more than 25 and a smoke developed rating of not more than 50.
B.
The wet vacuum system (in dental offices) is considered a Category 3 system if:
 
1.
The system is entirely separate from other Category 1 systems.
 
2.
The occupancy to be served and the function of the occupancy is distinct from other occupancies in the building.
 
3.
The patient population, during or subsequent to treatment, are not dependent for life on the vacuum system, and the treatment the facility performs may be completed without detrimental effect on patient outcomes in the event of sudden loss of vacuum systems.
C.
The wet vacuum system (in dental offices) shall be verified by a third party technically competent and experienced in the field of Category 3 vacuum systems and testing and meeting the requirements of ANSI/ASSE Standard 6030.
(AO No. 2020-85, § 1, 10-27-2020)
Adopt Appendices A, B, C (excluding C601), D, E (parts E through M), and I.
(AO No. 2020-85, § 1, 10-27-2020)