Re: MN Dept of Labor-Industry/report on plans-2005/2009

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r r Caribou Coffee Store No. 01-1180 Plumbing Plan No. 060133 Page 2 July 25,2005 5. The maximum water volume per flush of a floor-mAunted water closet shall be 1.6 gallons. Water closets shall comply with American National Standards Institute A112.19.6--1990 (see Minnesota Statutes, Section 326.37, subpart 2). Water closets in public bathroorrn�st have elongated bowls with open-front seats. 6. 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. 7. All comiriercial kitchen sinks, with the exception of mop sinks and hand sinks, shall be provided with 3/4- inch hot and cold water supply branch lines as a minirnum(see Minnesota Rules, part 4715.1730, subpart 2). 8. Faucets equipped with threaded hose connections must be provided with approved backflow preventers. 9. Water supply connections to fixtures or equiprrnent which have submerged inlets, or inlets below the spill line of the fixture or equipment, must be provided with an air gap arrangement, approved backflow preventer or backflow preventer assembly as specified in Minnesota Rules,part 4715.2000 and part 4715.2010. This shall include the ice maker and the coffee makers. 10. A water distribution branch serving two tank-type water closets rriust be at least 3/4-inch in size(see Minnesota Rules, part 4715.3800). Verify that the e�sting water service is adequately sized for all fixtures served(see Minnesota Rules,part 4715.3800). 11. It is recomrriended that a cleanout be provided where new waste and vent piping connects with e�sting plumbing to facilitate required testing of the new installation. 12. The copper water distribution piping rrnist meet ASTM Standard B 88 (see Minnesota Rules, part 4715.0520). All solder and flux used for the potable water distribution systems shall contain less than 0.2 percent lead. Use of 50-50 solder or flux containing more than 0.2 percent lead is prohibited in potable water distribution systems. Any solder other than 95-5 tin-antirr�ny or 96-4 tin-silver maist be specifically approved by the adrrunistrative authority prior to use(see Minnesota Statutes, Section 326.371). Joints to be soldered must be properly fluxed with noncorrosive paste-type flux complying with ASTM Standard B813-00. 13. If plastic pipe is used for the drain, waste and vent system: a. ABS plastic pipe shall comply with ASTM Standard D 2661 or F 628. b. PVC plastic pipe shall comply with ASTM Standard D 2665, D 2949, F 891. c. It must be installed in accordance with Minnesota Rules, part 4715.0580(� 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. d. Solvent weld joints in PVC and CPVC pipe must include use of a prin�r which is of contrasting color to the pipe and cement(see Minnesota Rules, part 4715.0810, subpart 2). 14. The plumbing system shall be tested in accordance with Minnesota Rules,part 4715.2820.