MN Dept of Lab & Industry - Report of Plans

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' s Orono Building Plumbing Plan No. 085918 Page 2 October 24,2007 4. A full-way valve must be provided on the cold water supply line to the water heater(see Minnesota Rules, part 4715.1800).Equipment used for heating water or storing hot water shall be protected by approved safety devices in accordance with Minnesota Rules,part 4715.2210 and part 4715.2230. Verify that a temperature and pressure relief valve is provided for the water heater. 5. Showers or combination showers-baths shall be equipped with antiscald-type control valves. These valves must be of the thermostatic or pressure balance type in accordance with ANSFASSE Standard 1016-96(see Minnesota Rules,part 4715.1380, subpart 5). 6. The maximum water volume per flush of a floor-mounted water closet shall be 1.6 gallons. Water closets shall comply with American National Standards Institute Al 12.19.6--1990(see Minnesota Statutes, Section 326.37, subpart 2).Water closets in public bathrooms must have elongated bowls with open-front seats. 7. The specifications indicate that the PVC to be used for the drain,waste,and vent system will meet ASTM D2846,which does not meet the requirements of the Minnesota Plumbing Code. If plastic pipe is used for the drain,waste and vent system: a. PVC plastic pipe shall comply with ASTM Standard D2665,D2949,F891. b. It must be installed in accordance with Minnesota Rules,part 4715.0580(F)and part 4715.0600. Above-grade horizontal runs of plastic waste and vent pipe cannot exceed 35 feet in total length. Above-grade vertical stacks constructed of plastic pipe may exceed 35 feet in total height only if an approved expansion joint is used. c. Solvent weld joints in PVC and CPVC pipe must include use of a primer which is of contrasting color to the pipe and cement(see Minnesota Rules,part 4715.08 10, subpart 2). 8. The specifications indicate that the CPVC to be used for the water distribution system will meet the requirements of ASTM Standard D2665,D2949,F891 which does not meet the requirements of the Minnesota Plumbing Code.Chlorinated polyvinyl chloride(CPVC)pipe must meet ASTM D2846(see Minnesota Rules,part 4715.0520). The installation must be in accordance with International Association of Plumbing and Mechanical Officials(IAPMO)Installation Standards 20-98. 9. The plumbing system shall be tested in accordance with Minnesota Rules,part 4715.2820. 10. Disinfection of the potable water system must include the following(see Minnesota Rules,part 4715.2250): a. The pipe system must be flushed with clean,potable water until no dirty water appears at the points of outlet; b. The system must then be filled with a water chlorine solution containing at least 50 parts per million of chlorine and allowed to stand for 24 hours; or a solution containing at least 200 parts per million of chlorine and allowed to stand for three hours; and c. Following the allowed standing time the system must be flushed with clean potable water until no chlorine remains.