06-19-2003 Regular Meeting and Public Hearing of the La Porte Planning and Zoning Commission

Browse Search

s • (S) A minimum distance of 2 feet shall be maintained from the right-of-way line to the outside edge of the water line. 1. Boulevard streets: When necessary, water lines, except for landscape irrigation, may be located within the esplanade. Water lines should be located as near the centerline as possible to avoid conflict with future pavement widening. The lines should be located in the street right-of--way but so as to avoid conflict with future pavement widening. 2. Locations within an easement: Locate water lines in the center of a 10-foot minimum width dedicated water line easement. Within a commercial development inside the City of La Porte, center water lines within a 20-foot easement. For location within side lot easements, the minimum easement width shall be 10 feet. Obtain approval from the Planning Department for lines to be located in smaller or multi-use easements. 3. When a water line is placed parallel to but not crossing any other proposed or existing utility line, other than a sanitary sewer, the water line shall have a minimum of 4 feet horizontal clearance from the outside wall of the existing . utility 4. Depth of cover a. Provide the following minimum depths of cover from the top of natural ground behind the curb for curb-and-gutter streets, and from the lowest elevation of the nearby ditch bottom for roadside ditch street sections whichever is applicable. Table 3.2 DEPTH OF COVER FOR WATER LINES SIZE OF LINE DEPTH OF COVER TOP-0F-CURB OPEN-DITCH 10-INCH & SMALLER 4 FEET 3 FEET below ultimate flowline 12-INCH 8c LARGER ~ 5 FEET 3 FEET below ultimate flowline b. Whenever possible, changes in grade or alignment to cleaz utilities or underground features should be accomplished by deflecting pipe joints. The maximum designed deflection shall be '/s of the manufacturer's allowable deflection. The use of regular bends for any change of grade shall not be allowed except when prior approval is obtained from the Planning Department. c. If a depth greater than 8 feet or less than 4 feet to the top of the pipe is required, a welded section of water line shall be used and continued for all areas the depth of cover exceeds 8 feet or is less than 4 feet. (_ 1) All transitions from steel pipe to approved water main materials shall be constructed using electrically isolated flange joints. (2) Welded steel water line sections shall be constructed in accordance with City of La Porte construction details for water lines. D. Appurtenances 1. Do not place appurtenances in pavement whereas the appurtenance would be covered in whole or in part by pavement. Gate valves etc. may be placed in sidewalks or paved roadways provided that they are accessible. 2. All water system valves shall conform with AWWA standards and shall include: Water System Design Criteria Page 3 of 12