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A , Hennepin County Orono Maintenance Facility Expansion Plumbing Plan No. PLB 1412-00075 Page 3 December 19, 2014 12. Verify that the two-way cleanout referenced on Sheet M1.1 serving the flammable waste line is a single manufactured piece of equipment and not two separate cleanouts. No fitting,connection,or device which obstructs or retards the flow of water or sewage in an amount greater than the normal frictional resistance to show shall be used(see Minnesota Rules,part 4715.2420, subpart 3). 13. Each horizontal drain branch, including floor drain branches,shall be provided with a cleanout at its upper terminal with the following exceptions(see Minnesota Rules,part 4715.1000): a. A readily removable fixture trap or a fixture with an integral trap may be accepted as a cleanout. b. A floor drain cleanout may be omitted if the floor drain branch line is less than 5 feet. c. Shower drain,mop sink,and receptor cleanouts may be on the fixture vent,or on the fixture. 14. A cleanout shall be provided on a common vertical fixture drain or common vent serving two fixture traps that connect to a vertical drain at the same level. The cleanout shall be the same nominal pipe size as the drain serving the fixtures. Where the vertical fixture drain is accessible through the trap opening,the cleanout may be eliminated(see Minnesota Rules,part 4715.1000). I5. Above-grade horizontal plumbing piping must be supported as follows(see Minnesota Rules, part 4715.1430, subpart 4): a. Plastic pipe: at least every 32 inches. b. Cast iron: at least every 5 feet; or 10 feet when ten foot lengths of pipe are used. c. Copper tubing(P/a-inch or less): at least every 6 feet. d. Copper tubing(1'/z-inch or over): at least every 10 feet. 16. A full-way valve must be provided on the cold water supply line to the water heater(see Minnesota Rules, part 4715.1800). NOTE(S): 1. The scope of this project consists of the remodeling of an existing building. The plumbing installation shall include five roof drains and storm water drainage piping,water heaters,hose bibbs,pressure washers,a flammable waste interceptor,trench drains, floor drains,an emergency eyewash, an electric water cooler,a single compartment sink, two showers,and two public restrooms with flush valve water closets. 2. This facility will be served by an existing sanitary sewer and a new municipal water service. Authorization for construction in accordance with the approved plans may be withdrawn if construction is not undertaken within a period of two years. The fact that the plans have been approved does not necessarily mean that recommendations or requirements for change will not be made at some later time when changed conditions, additional information,or advanced knowledge make improvements necessary.