11-08-2006 Council Agenda - Laserfiche WebLink

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of Z// Wanala MAYOR 13111 Btesener COUNCIL Jim LaVatle Ricic Montour Barbara Allan John Keis 515 Little Canada Road, Little Canada, MN 55117 -1600 ADMINISTRATOR (651) 766 -4029 / FAX: (651) 766 -4048 Joel R. Hanson www. ci.little- canada. run. us MEMORANDUM To: Mayor Btesener & Members of City Council From: Bill Dircks, Public Works Superintendent Date: November 1, 2006 Re: Water Service Pipe Staff recommends the following changes to the Municipal Water System Code. Under section 1601.100 — Service Pipes, the following is proposed to include more pipe materials rather than copper only. 1601.100. SERVICE PIPES. (1) Every service pipe must be laid sufficiently waving to allow not less than 1 foot of extra length and in such manner as to prevent rupture by settlement. The service pipe must be placed no less than 7 feet below the surface and in all cases so arranged as to prevent rupture by freezing. Service pipes must extend from the curb box to the inside of the building; or, if not taken into a building, then to the hydrant or other fixtures which it is intended to supply. Type K copper tubin_ shall be used up to and including 2" services. Water service pipe materials shall water tight, corrosion resistant and be approved under the Minnesota State Plumbing Code and by the Public Works Director. All underground joints to be mechanical, unless otherwise approved by the Utilities Department. Joints eri sapper tubing shall be kept to a minimum, with not more than 1 joint used for service to 70 feet in length. All joints and connections shall be left uncovered until inspected and tested at normal water line pressure. All services over 2" shall be ductile iron. Connections with the mains for domestic supply shall be at least 3/4 inch. (2) Where ductile iron is used for service connections from the water main to the property line, the smallest size permitted shall be 4" ductile iron service connections with 4" gate valves. Each ductile iron service shall be rodded from the water main tee to the gate valve or as directed by the Public Works Director. The State Plumbing Code covers the use of plastic service pipe as well as other materials. It is staff's opinion that the Public Works Director /Superintendent should still have the right to approve or deny a material if he or she is not comfortable with it despite the fact that the State Plumbing Code allows it.