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Stonebay Plumbing Plan No. 061159 Page 3 October 6,2005 10. If the bathtub(s)has/have concealed slip-joint fittings,then an access panel,utility space, o other convenient access must be provided to make the slip joint connections accessible for inspe tion and repair (see Minnesota Rules,part 4715.1220, subpart 2). 11. Water closets located in the public bathrooms must have elongated bowls with open-front s ats. 12. In each single-or multiple-unit dwelling,each family unit shall be controlled by an arrang ent of shutoff valves which will permit each group of fixtures or the individual fixtures to be shut off wit out interference with the water supply to any other family unit or portion of the building(see Minnesota R es, part 4715.1800, subpart 5). 13. Potable water connections to boiler feed water systems,cooling systems,or other liquid sy tems in which water conditioning chemicals may be introduced shall be made through an air gap or be pr vided with an approved'backflow preventer located in the potable waterline before the point where such hemicals may be introduced(see Minnesota Rules,part 4715.1940). 14. The combination fire protection/domestic water service shall comply with the backflow pr tection requirements of AWWA-M14, Chapter 6(1990)with the exception that the following state ent is deleted from section 6.3: "At any time where the fire sprinkler piping is not an acceptable potable ater system material,there shall be a backflow-prevention assembly isolating the�re sprinkler system om the potable water system.° 15. The direct connection between a potable water supply and the lawn irrigation system shall e provided with an approved backflow preventer in accordance with Minnesota Rules,part 4715.2110,T,a d part 4715.2100. 16. Double wyes may not be used for drainage fittings in the horizontal position(see Minneso a Rules, part 4715.2420, subpart 3). Proper pipe slope cannot be maintained on both of the offset b anches. 17. The sump must be designed in accordance with Minnesota Rules,part 4715.2440. The fol owing items must be included in the construction of the sump: a. A gate valve and check valve must be provided on the sump pump discharge line,mus be accessible and lpcated outside of the sump. 18. The floor drain to receive the water softener discharge must be individually vented in acco dance with Minnesota Rules,part 4715.2620, subpart 4. 19. The roof drains must discharge to an approved place of disposal. In no case shall water fr m the roofs be allowed tio flow upon the public sidewalk. 20. 6-inch AWWA C900 PVC pipe is shown for the water service on the site utility plan, Shee No. C4.1,of the submitted plans,however,4-inch ductile iron pipe water service is shown on the floor pla s, Sheets No. P4 and P5. Please verify the size and material of the water service. 21. AWWA C900 PVC pipe may be used for the water service only if approved by administra ive authority(see Minnesota Rules,part 4715.0510 and part 4715.0330).