15-1 Division 15
UTILITY CONSTRUCTION 1500 -1 DESCRIPTION Construct various utilities as required by the contract or as directed by the Engineer . Apply the applicable provisions of the rules and regulations of the NCDEQ to the construction of water lines and sanitary sewer lines. Perform all work in accordance with the applicable plumbing codes. 1500 -2 COOPERATION WITH THE UTILITY OWNER The utility owner owns the existing utility facilities and will own the new utility facilities after acceptance by the Department. The Department owns the construction contract and has administrative authority. Communications and decisions between the contractor and utility owner are not binding upon the Department or this contract unless authorized by the Engineer. Agreements between the utility owner a nd contractor for work that is not part of this contract or is secondary to this contract are allowed, but are not binding upon the Department. Provide access for Department personnel and the utility owner's representatives to all phases of construction. Notify the Engineer and the utility owner 2 weeks before commencement of any work and one week before service interruption. Keep utility owners’ representatives informed of work progress and provide opportunity for inspection of construction and testing. Except in an emergency, do not operate any of the controls on the existing systems without prior approval of the utility owner. Notify the utility owner at least 24 hours in advance of all arrangements for temporary service and for agreement with the utility owner as to the time that service may be interrupted. 1500 -3 UTILITY LOCATIONS AND CONTRACTOR’S RESPONSIBILITY The plans depict the best available information for the location, size and type of material for all existing utilities. Make investigations for determining the exact location, size and type of material of the existing facilities as necessary for the construction of the proposed utilities and for avoiding damage to existing facilities. Repair any contractor caused damage of existing facilities to the original or better condition at no additional cost to the Department. Exploratory Excavation required to locate a utility not identified in the plans will be paid in accordance with Article 104 -7. 1500 -4 WEEKEND, NIGHT AND HOLIDAY WORK Make connections between existing and proposed utilities at times most convenient to the public, without endangering the utility service and in accordance with the utility owner’s requirements. Make connections on weekends, at night and on holidays , if necessary. 1500 -5 RELATION OF WATER MAINS TO NON- POTABLE WATER LINES AND OTHER UTILITIES For sanitary sewers, l ay water mains at least 10 feet laterally from existing or proposed sanitary sewers. If local conditions or barriers prevent a 10 foot separation, lay the water main with at least 18 inches vertical separation above the top of the sanitary sewer pipe either in a separate trench or in the same trench on a bench of undisturbed earth.
15-2 For storm drain pipe , reclaimed water distribution or other utilities , lay the water main with at
least 1 2 inches separation from the outside of the water main and the outside of the other facility . One full length of water pipe at the point of crossing shall be located so that both joints will be as far from the sanitary sewer as possible . If practicable, the water main shall be located above the sewer. 1500 -6 PROTECTION OF PEDESTRIAN AND VEHICULAR TRAFFIC During the progress of the work, keep sidewalks and crossings open for the passage of pedestrians. Take necessary measures to keep roadways open for traffic unless lane o r roadway closures are approved. Construct and maintain adequate and approved bridges over excavations as necessary for the purpose of accommodating pedestrians or vehicles. When open cut installation is allowed across a roadway and traffic is to be mainta ined, construct the installation in sections so that half the width of the roadway will be available to traffic. Provide all traffic control measures necessary to provide for safe traffic passage. 1500 -7 SUBMITTALS AND RECORDS Deliver only approved materials to the project. Provide sufficient information as required under Sections 105 and 106 to demonstrate the materials meet the specifications and intended use. Provide 2 hard copies to the utility owner and an electronic (.pdf) copy to the Engineer and utility owner . Identify each item’s intended use. As a minimum, the submitted information shall show the material description, brand name, stock number, size, rating and manufacturing specification. Provide working drawings of thrust restraint designs and connection details along with schedules for performing the work. Provide as-built plans of the installed utility. The plans shall include notations of the size and type material installed, coordinates of utility controls and horizontal and vertical locations of the piping sealed by a North Carolina Professional Land Surveyor ( PLS) . As -built plans provided as PDF formatted files shall be generated from the source electronic files, not scanned facsimiles of paper plan sheets. Provide as -builts as PDF files to the Engineer. Provide 2 hard copies in full- size sheets and PDF formatted files to the utility . 1500 -8 LOCATING AND MARKING Tape a continuous locator wire along the top of all piping. Mechanically fasten locator wire to valve boxes, meter boxes, fire hydrants, manhole covers and other above grade appurtenances. Install marking tape 18 inches to 24 inches below finis hed grade above all pipelines. 1500 -9 PLACING PIPELINES INTO SERVICE Make final connections of the new work to the existing mains where indicated in the plan s, as required to fit the actual conditions or as directed. Provide sufficient work crews, equipment and materials on site to assure quick and efficient connections. Schedule and notify owners and customers in advance of any interruptions of water service with ample time to make arrangements. Limit interruption of service to water customers to no more than 8 hours. Provide temporary connections as needed to maintain service . Obtain approval from the NCDEQ -Water Resources Section prior to placing a new water line into service. Use backflow p revention assemblies for temporary connections to isolate new water lines from existing water line.