4.4 SR 04-19-2021 - Laserfiche WebLink

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City of Elk River Design Standards Section 3400 - Watermain Design Standards Design Criteria 1. All Watermain design shall comply with the latest edition of the Ten States Standards for Water Works, APWA and Minnesota Department of Health standards. 2. Water System installation and testing shall be in accordance with CEAM standard specifications except as modified herein. 3. The minimum size of watermain shall be 8 inches. (Hydrant leads can be 6") 4. Watermain pipe shall be ductile iron in accordance with AWWA C151. 5. The minimum bury depth of watermain shall be 7'- 6" to top of pipe. 6. The minimum size of water service lines and corporations shall be 1 inch. When water service lines exceed 200-feet, the service line and corporation shall be 11/2". 7. No dead-end mains shall be constructed. All watermains shall be looped. 8. Water looping outside of the Right of Way shall be HDPE, valved at each end with no connection/services in between. 9. Temporary dead-end mains shall be equipped with a fire hydrant for flushing purposes. 10. Hydrants shall be spaced so that all portions of a building or residence to be protected are within a 250-foot radius of a hydrant. (Final review will be made by the Fire Chief and City Engineer) 11. Each hydrant lead shall be equipped with a resilient seated valve for shut-off purposes and installed in accordance with the standard detail. 12. Valves shall be placed throughout the distribution system so that each portion may be isolated with the least interruption of service. Valves shall be placed at each roadway intersection or the intersection of watermains. (Final review will be made by the Water Superintendent and City Engineer) 13. A "Hydrafinder" locating device shall be installed on each hydrant installed and shall be mounted on the upper flange of the hydrant with a straight mounting bracket as indicated in Elk River Standard Plate 3401. For every five hydrant locating devices installed, one extra hydrant locating device shall be delivered to the Elk River Municipal Utilities. 14. All hydrants and leads shall be restrained from the main to the hydrant using threaded rods or Megalug restraint glands in accordance with the standard detail plates. 15. To allow the hydrant to drain after use, the hydrant bottom shall be surrounded by Coarse Filter Aggregate (Mn/DOT 3149.2H) or 3/4" - 11/2" clear drain rock covered with plastic material as indicated on Standard Plate 3402. 16. All watermain valves shall be operated only by Elk River Municipal Utility forces (763.635.1361). © City of Elk River, Minnesota — All rights reserved 7