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City of Elk River Design Standards <br />Electrical conductivity straps shall be pro�rided to by-pass the tapping sleeve assembl�. <br />Upon completing the installation all exposed bolts and nuts shall be completely coated with an <br />approved bituminous rust preventative coal tar material. The entire tapping sleeve and val�Te <br />assembly shall be polyethylene encased. <br />2. Water Service Installa�ion <br />Water service lines shall be installed in accordance with Nlinnesota Department of Health <br />standards. Where water service lines are installed alongside of sanitary or storm sewer service <br />lines, installation shall maintain the minimum specified clearances between pipelines and provide <br />proper and adequate bearing for all pipes and appurtenances. <br />Unless otherwise specified, inst�illation of water service lines shall provide for not less than <br />seven- and one-half feet of cover over the top of the pipe and for not less than 18 inches of <br />clearance between pipelines. Also, at least 6 inches of clearance shall be maintained in crossing <br />over or under other structures. Where the service pipe may- be exposed to freezing due to <br />insufficient cover or e�posure from other underground structures, the water pipe shall be <br />insulated as directed by ERMU. <br />Service trenches shall be restored and compacted as specified for pipelines. <br />A. No dry tapping shall be allowed. Unless otherwise indicated, tap service piping may be <br />laid direcd� on any solid foundation soil that is relati�rely free of stones and hard lumps. <br />Tap service piping shall be installed in one piece without intermediate joint couplings <br />between the corporation stop at the watermain tap and the curb stop. r�ll copper pipe and <br />appurtenances shall be joined by means of appro�red flared n�pe threaded couplings. <br />Connection of tap service lines to the watermain shall be made with an approved <br />corpora�ion stop, with the watermain tap being made from horizontal to an angle of not <br />more than 15 degrees from the horizontal. (2:30 and 9:30). Expansion loops shall be <br />directed horizontally�, not �rertically from the tap. A minimum of 3 full threads of the <br />corpora�ion stop must engage in ductile iron watermain or a saddle must be used for the <br />connection as noted in the following table. <br />OO City of Elk River, Minnesota — All rights reserved I 3 <br />