(A) (1) Poles and other aboveground utilities which are to remain inside the right-of-way under encroachment agreement shall be located at or as near as practical to the right-of-way line. As a minimum aboveground utilities shall be located outside the clear roadside area for the highway section involved.
(2) Where there are curbed sections, aboveground utilities should be located as far as practical behind sidewalks. There is no single minimum dimension for setback of poles, fire hydrants and the like, behind curbs; however, where there are curbed sections and no sidewalks, six feet will be used as a design safety concept guide.
(B) Minimum depth of cover for pipe lines and other utilities:
Crossings under ditches | 2 feet |
Crossings under roadways | 3 feet |
Longitudinal electric power secondary and trenched communication lines | 2 feet |
Longitudinal pipe lines and electric power primary | 3 feet |
Plowed-in communication lines | 18 inches |
(C) For residential subdivision streets and residential collector streets, underground utilities may cross under or run longitudinally under the pavement provided future utility stubouts are installed prior to paving. For all other streets and highways, underground utilities may cross under but not run longitudinally under the pavement, except in unusual situations approved by the Division Engineer.
(D) Acceptable materials for pipeline with utilities within the rights-of-way: materials not listed shall be referred to the Design Services Unit-Utilities Section.
(1) Smooth wall steel pipe meeting API 5L Grade B specifications;
(2) Spiral welded steel pipe meeting ASTM specification A-211;
(3) Circular black steel pipe meeting ASTM specification A-120 or A-589;
(4) Galvanized steel pipe meeting ASTM A-120 specifications;
(5) Ductile iron pipe - class 50 minimum strength;
(6) Concrete sewer pipe - plain and reinforced pipe meeting Department of Transportation standard with rubber gasket joints;
(7) Reinforced concrete pressure pipe, steel cylinder type for water and other liquids meeting AWWA specifications C-300, C-301 and C-303;
(8) ABS (acrylonitrile - butadiene - styrene) composite sewer pipe shall meet ASTM D-2680 specifications for pipe sizes eight inches through 15 inches and ASTM D-2751 for pipe sizes four inches and six inches for laterals. ABS sewer pipe shall be used for domestic sewage only; also, P.V.C. truss pipe meeting ASTM D-2321 which has to be specified by registered professional engineer;
(9) P.V.C. (Polyvinyl chloride) water pipe (pressure only) - SDR 14 (C-900); SDR 18 (C-900) and SDR 21;
(10) P.V.C. (Polyvinyl chloride) sewer pipe (force main) SDR 14 (C-900), SDR 18 (C-900) and SDR 21;
(11) P.V.C. (polyvinyl chloride) pipe (gravity sewer) SDR 14 (C-900), SDR 18 (C-900), SDR 21, SDR 26, SDR 35, ASTM F 794, ASTM F 949 (A-2000) and schedule 40 and 80;
(12) V.C. (vitrified clay) sewer pipe, extra strength meeting ASTM specifications C-700 with factory fabricated joints meeting ASTM specifications C-425;
(13) P.E. (Polyethylene) plastic pipe - SDR 7 meeting ASTM specifications D-2239 and plastic tubing - SDR 9 meeting ASTM specification D-2737 for sizes three-fourths inch through two inches only;
(14) Polyethylene plastic pipe (high molecular weight) and (medium molecular weight) SDR 11 meeting plastic pipe institute material designation PE 3408 and PE 2406 in sizes up to 6.625" O.D. for gas with maximum operating pressure of 60 PSIG; and
(15) Type K copper pipe meeting ASTM specification B-88 for sizes three-fourths inch through two inches.
(E) Any utility to be installed within the right-of-way of a state maintained road will require an encroachment agreement with the State Board of Transportation in accordance with its publication entitled Policies and Procedures for Accommodating Utilities on Highway Rights-of-Way.
(F) All non ferrous pipe lines shall be installed with a locating tape.
(G) All utility structures (i.e., vaults, manholes and boxes) shall be load rated for the appropriate dead load, plus an HS 20 live load. The structures shall be designed and certified by a licensed professional engineer.
(H) Electrical power and communication facilities should conform to the currently applicable National Electrical Safety Code, except vertical clearances shall be no less than 18 feet in any case.
(Ord. passed 1-1-2000)