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2011 Utah Code
Title 15A State Construction and Fire Codes Act
Chapter 3 Statewide Amendments Incorporated as Part of State Construction Code
Section 205 Amendments to Chapters 26 and 35 of IRC.

15A-3-205. Amendments to Chapters 26 and 35 of IRC.
(1) A new IRC, Section P2602.3, is added as follows: "P2602.3 Individual water supply. Where a potable public water supply is not available, individual sources of potable water supply shall be utilized, provided that the source has been developed in accordance with Utah Code, Sections 73-3-1 and 73-3-25, as administered by the Department of Natural Resources, Division of Water Rights. In addition, the quality of the water shall be approved by the local health department having jurisdiction."
(2) A new IRC, Section P2602.4, is added as follows: "P2602.4 Sewer required. Every building in which plumbing fixtures are installed and all premises having drainage piping shall be connected to a public sewer where the sewer is within 300 feet of the property line in accordance with Utah Code, Section 10-8-38; or an approved private sewage disposal system in accordance with Utah Administrative Code, Chapter 4, Rule R317, as administered by the Department of Environmental Quality, Division of Water Quality."
(3) In IRC, Section P2801.7, the word "townhouses" is deleted.
(4) A new IRC, Section P2902.1.1, is added as follows: "P2902.1.1 Backflow assembly testing. The premise owner or his designee shall have backflow prevention assemblies operation tested at the time of installation, repair, and relocation and at least on an annual basis thereafter, or more frequently as required by the authority having jurisdiction. Testing shall be performed by a Certified Backflow Preventer Assembly Tester. The assemblies that are subject to this paragraph are the Spill Resistant Vacuum Breaker, the Pressure Vacuum Breaker Assembly, the Double Check Backflow Prevention Assembly, the Double Check Detector Assembly Backflow Preventer, the Reduced Pressure Principle Backflow Preventer, and Reduced Pressure Detector Assembly."
(5) IRC, Table P2902.3, is deleted and replaced with the following:
"TABLE P2902.3
General Methods of Protection
Assembly (applicable standard) Degree of Hazard Application Installation Criteria
Reduced Pressure Principle Backflow Preventer
(AWWA C511, USC-FCCCHR, ASSE 1013 CSA CNA/CSA-B64.4) and Reduced Pressure Detector Assembly
(ASSE 1047, USC-FCCCHR)
High or Low Backpressure or Backsiphonage
1/2" - 16"
a. The bottom of each RP assembly shall be a minimum of 12 inches above the ground or floor.
b. RP assemblies shall NOT be installed in a pit.
c. The relief valve on each RP assembly shall not be directly connected to any waste disposal line, including sanitary sewer, storm drains, or vents.
d. The assembly shall be installed in a horizontal position only unless listed or approved for vertical installation.
Double Check Backflow Prevention Assembly (AWWA C510, USC-FCCCHR, ASSE 1015) Double Check Detector Assembly Backflow Preventer (ASSE 1048, USC-FCCCHR) Low Backpressure or Backsiphonage
1/2" - 16"
a. If installed in a pit, the DC assembly shall be installed with a minimum of 12 inches of clearance between all sides of the vault including the floor and roof or ceiling with adequate room for testing and maintenance.
b. Shall be installed in a horizontal position unless listed or approved for vertical installation.
Pressure Vacuum Breaker Assembly (ASSE 1020, USC-FCCCHR) High or Low Backsiphonage
1/2" - 2"
a. Shall not be installed in an area that could be subjected to backpressure or back drainage conditions.
b. Shall be installed a minimum of 12 inches above all downstream piping and the highest point of use.
c. Shall not be installed below ground or in a vault or pit.
d. Shall be installed in a vertical position only.
Spill Resistant Vacuum Breaker (ASSE 1056, USC-FCCCHR) High or Low Backsiphonage
1/4" - 2"
a. Shall not be installed in an area that could be subjected to backpressure or back drainage conditions.
b. Shall be installed a minimum of 12 inches above all downstream piping and the highest point of use.
c. Shall not be installed below ground or in a vault or pit.
d. Shall be installed in a vertical position only.
General Installation Criteria The assembly owner, when necessary, shall provide devices or structures to facilitate testing, repair, and/or maintenance and to ensure the safety of the backflow technician.
Assemblies shall not be installed more than five feet off the floor unless a permanent platform is installed.
The body of the assembly shall not be closer than 12 inches to any wall, ceiling or encumbrance, and shall be accessible for testing, repair and/or maintenance.
In cold climates, assemblies shall be protected from freezing by a means acceptable to the code official.
Assemblies shall be maintained as an intact assembly."
(6) IRC, Table 2902.3a, is added as follows:
"TABLE 2902.3a
Specialty Backflow Devices for low hazard use only
Device Degree of Hazard Application Applicable Standard
Air Gap High or Low Backsiphonage See Table P2902.3.1 ASME A112.1.2
Antisiphon-type Water Closet Flush Tank Ball Cock Low Backsiphonage ASSE 1002
CSA CAN/
CSA-B125
Atmospheric Vacuum Breaker High or Low Backsiphonage
a. Shall not be installed in an area that could be subjected to backpressure or back drainage conditions.
b. Shall not be installed where it may be subjected to continuous pressure for more than 12 consecutive hours at any time.
c. Shall be installed a minimum of six inches above all downstream piping and the highest point of use.
d. Shall be installed on the discharge (downstream) side of any valves.
e. The AVB shall be installed in a vertical position only.
ASSE 1001
USC-FCCCHR,
CSA CAN/
CSA-B64.1.1
Dual check valve Backflow Preventer Low Backsiphonage or Backpressure
1/4" - 1"
ASSE 1024
Backflow Preventer with Intermediate Atmospheric Vent Low Residential Boiler Backsiphonage or Backpressure
1/4" - 3/4"
ASSE 1012
CSA CAN/
CSA-B64.3
Dual check valve type Backflow Preventer for Carbonated Beverage Dispensers/Post Mix Type Low Backsiphonage or Backpressure
1/4" - 3/8"
ASSE 1022
Hose-connection Vacuum Breaker Low Backsiphonage
1/2", 3/4", 1"
ASSE 1011
CSA CAN/
CSA-B64.2
Vacuum Breaker Wall Hydrants, Frost-resistant, Automatic Draining Type Low Backsiphonage
3/4", 1"
ASSE 1019
CSA CAN/
CSA-B64.2.2
Laboratory Faucet Backflow Preventer Low Backsiphonage ASSE 1035
CSA CAN/
CSA-B64.7
Hose Connection Backflow Preventer Low Backsiphonage
1/2" - 1"
ASSE 1052
Installation Guidelines: The above specialty devices shall be installed in accordance with their listing and the manufacturer's instructions and the specific provisions of this chapter."
(7) In IRC, Section P3103.6, the following sentence is added at the end of the paragraph: "Vents extending through the wall shall terminate not less than 12 inches from the wall with an elbow pointing downward."
(8) In IRC, Section P3104.4, the following sentence is added at the end of the paragraph: "Horizontal dry vents below the flood level rim shall be permitted for floor drain and floor sink installations when installed below grade in accordance with Chapter 30, and Sections P3104.2 and P3104.3. A wall cleanout shall be provided in the vertical vent."

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