Plans amd spec on plumbing - Orono Senior Housing

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Orono Senior Housing Plumbing Plan No. PLB 1106-00212 August 26, 2011 Page 2 3. Assuming a maximum developed length of pipe between the meter and the most remote outlet of 340 feet, and a building water pressure at the meter between 46 and 60 psi, and using Minnesota Rules, part 4715.3800: Water distribution branches serving two kitchen hand sinks must be at least 3/4-inch in size. 4. Showers and combination showers-baths shall be equipped with anti-scald control valves. These valves must be of the thermostatic or pressure balance type in accordance with ANSI/ASSE Standard 1016-96 (see Minnesota Rules, part 4715.1380, subpart 5). The installer must verify that the maximum temperature setting from the factory is set or adjusted in accordance with the standard. It is recommended that the maximum setting of the discharge temperature does not exceed 110 degrees F. This office could find no evidence that the specified Cornerstone 45311 shower valve meets this requirement. 5. Whirlpool bathtubs and their installation must comply with the following requirements(see Minnesota Rules, part 4715.1240): a. Whirlpool bathtubs and their installation must comply with ANSI Standard A112.19.7. Whirlpool bathtubs that are provided with a pressure sealed door must comply with ASME/ANSI Standard A112.19.15. b. The waste control device must be located at the tub outlet. c. Panels must be provided to allow access to the pumping equipment. d. If a shower spray is to be provided, it must be equipped with an approved backflow preventer and an anti-scald control valve complying with ANSI/ASSE Standard 1016-96. 6. A water supply line to a spray/rinse hose on a shampoo sink shall be protected against backflow by the use of an atmospheric vacuum breaker(see Minnesota Rules, part 4715.2110). Adjustable tailpiece sink systems must comply with ASME Standard A112.19.12-2006. The tailpiece must be of rigid construction (see Minnesota Rules, part 4715.1390, subpart 3). 7. Water closets in public bathrooms must have open-front seats, except closed-front seats may be used in residential or dwelling-type occupancies(see Minnesota Rules, part 4715.1420). This shall include the water closets in Room Nos. 108, 111, and 205. 8. 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. 9. In each single-or multiple-unit dwelling, each family unit shall be controlled by an arrangement of shutoff valves which will permit each group of fixtures or the individual fixtures to be shut off without interference with the water supply to any other family unit or portion of the building(see Minnesota Rules, part 4715.1800, subpart 5). 10. The direct connection between a potable water supply and the lawn irrigation system shall be provided with an approved backflow preventer in accordance with Minnesota Rules, part 4715.2110, T, and part 4715.2100. 11. The combination fire protection/domestic water service shall comply with the backflow protection requirements of AWWA-M14, Chapter 6 (1990)with the exception that the following statement is deleted from section 6.3: "At any time where the fire sprinkler piping is not an acceptable potable water system material,there shall be a backflow-prevention assembly isolating the fire sprinkler system from the potable water system."