947 Load center cabinets will be measured as a unit for each load center cabinet furnished and installed. 736- 5 Basis of Payment: The accepted quantities of luminaires and load center cabinets, measured as provided above, will be paid for at the contract unit price each, for the types of luminaires and load center cabinets designated in the bidding schedule, complete in place, which price shall be full compensation for the w ork described and specified herein and on the plans. 737- 1 Description: The work under this section shall consist of maintaining existing traffic signals and lighting systems, furnishing and installing complete and functioning temporary traffic signal systems, removing and salvaging or reinstalling electrical equipment , and preparing updated electrical record drawings of all installed electrical eq uipment ; all in accordance with the project plans and the requirements of these specifications. 737- 2 Materials: 737- 2.01 Maintaining Existing Traffic Signals and Lighting Systems: Replacement items necessary for maintaining existing Traffic Signal and Lighting Systems shall be of similar make and manufacture and meet the minimum material requirements of those items they are to replace. 737- 2.02 Temporary Traffic Signals:
Department approved pole- line hardware shall be utilized in the installation of poles, messenger cable, pole anchors, etc.
Wood poles shall be 35 feet in length, Class 3, unless otherwise specified, and meet the requirements of Section 731 of the specifications. Holes for poles shall be dug at an angle with the vertical to allow for proper raking of the top of the pole. Poles shall be set 6 feet deep in the ground, be well tamped, and raked 1 foot out from the vertical position and in line with the pull of the cable. TABLE OF CONTENTS INDEX 948 The wood poles for temporary signals and their associated cables, wires, supports, etc. shall be located so as to provide clearance for all permanent construction.
The messenger cable used for aerial signals and anchoring shall be 3/8- inch minimum, seven -strand, high- strength grade, galvanized steel messenger cable securely attached to the poles and anchors in an approved manner.
The Depar tment will be responsible for any changes required in the control cabinet. The existing pedestrian units shall be used on the temporary traffic signals. The existing controller cabinet shall be used. All other equipment and materials necessary for the t emporary signals shall be furnished by the contractor. 737- 2.03 Removing and Salvaging or Reinstalling Electrical Equipment: Replacement parts for salvaged or reinstalled electrical equipment shall meet th e material requirements for like items as hereinbefore specified, as directed by the Engineer, or as designated in the Special Provisions. 737- 3 Construction: 737- 3.01 Maintaining Existing Traffic Signals and Lighting Systems: All existing traffic signal and lighting systems or other designated electrical systems, shall be kept in effective operation for the benefit of the traveling public during the progress of the work, except when shutdown is permitted to allow for alterations or final removal of the systems. The work shall also include the relocation and/or modification of existing traffic signals and lighting systems as required during construction. The traffic signal system shutdowns shall be limited to the normal working hours as directed by the Engineer. During periods of shutdown, flaggers shall be employed to manually direct traffic. At all other times, the traffic signal system shall remain operational. All traffic signal heads not in use shall be covered with burlap and shall be unmistakably out of service when observed by an approaching driver. Plastic coverings shall not be allowed. During construction, the maintenance, care and control of the exi sting traffic signal control cabinet will be the responsibility of the Department TABLE OF CONTENTS INDEX 949 or the local agency. All other maintenance of the existing traffic signal system shall be accomplished by the contractor. The contractor shall maintain full nighttime operation of the existing lighting system for the duration of the construction project. The contractor shall designate a person who will be available for emergency maintenance calls after normal working hours. The contractor shall furnish this person's name and telephone number to the Engineer. The contractor shall have labor and the necessary equipment available on a 24-hour per day basis for such emergency maintenance. 737- 3.02 Temporary Traffic Signals: Messenger cable shall have a maximum sag of 5 percent of the distance of spans. The lowest point of any back plate shall initially be 17 feet above the roadway to allow for settling of poles and anchors. Backplates shall be maintained so that the clearance between the lowest point of any backplate and the future finished roadway grade shall be not less than 16 feet. The contractor shall check each day to insure that the minimum clearance is maintained and shall take correcti ve measures if necessary. Cable rings on 24- inch maximum spacing shall be used to secure the signal wires to the messenger cable. The wires shall also be taped to the cable if necessary to prevent excessive and unsightly slack in the line(s). The continuous operation of traffic signals shall be in accordance with the requirements of Subsection 737- 3.01 of the specifications. The contractor shall maintain the electrical systems for the duration of the construction project. The contractor shall designate a person who will be available for emergency maintenance calls after normal working hours. The contractor shall furnish this person's name and telephone number to the Engineer. The contractor shall have labor and the necessary equipment available on a 24- hour per day basis for such emergency maintenance. When required, the contractor shall remove and salvage all material associated with the temporary traffic signal. All salvaged material shall be the property of the Department and shall be dismantled and stockpiled as directed by the Engineer. Material broken or damaged by the contractor shall be replaced with new and like material at no additional cost to the Department. It shall be the responsibility of the contractor to remove and dispose of all traffi c signal equipment and materials not salvaged. Cavities resulting from the removal of pull boxes, foundations or other material shall be backfilled and compacted with material equivalent to or better than the surrounding material. TABLE OF CONTENTS INDEX 950 737- 3.03 Removing and Sal vaging or Reinstalling Electrical Equipment: The contractor shall remove and salvage all existing traffic signal and lighting equipment as specified in the Special Provisions, project plans, or as directed by the Engineer. The work shall also include the removal and disposal of foundations. All equipment and materials to be salvaged shall be the property of the Department. Salvageable material shall be dismantled and stockpiled, prior to project completion, as directed by the Engi neer or as shown on the plans. All equipment damaged or destroyed by improper care or handling shall be replaced with new equipment. Unless otherwise specified, it shall be the responsibility of the contractor to remove and dispose of all discarded materials not salvaged. Holes resulting from removal of pull boxes, foundations, and other material shall be backfilled and compacted with material equivalent to the surrounding area or as designated by the Engineer. When salvaged equipment is to be reinstalled, the contractor shall furnish and install all necessary materials, equipment, and hardware as required to complete the new installation. Reinstalled poles, pull boxes and cabinets shall be relocated as shown on the plans, with conduit and conductors inst alled, and all circuit connections complete and operational. Signal faces, mounting assemblies and backplates shall be cleaned and repainted when reinstalled. All traffic signal faces, either to be reinstalled or part of a modified system, shall be relam ped. Luminaires to be reinstalled shall be cleaned and relamped. Existing materials to be relocated and found to be unsatisfactory by the Engineer shall be replaced with new material and will be paid for in accordance with the requirements of Subsection 109.04 of the specifications. 737- 3.04 Electrical Record Drawings: The contractor shall prepare, update, and provide a set of electrical record drawings, which show the actual as- built conditions of all installed electrical components that have been approved by the Engineer. The contractor shall prepare and submit the electrical record drawings that incorporate all revisions and modifications to the Engineer for approval. The contractor shall sign and indicate the date the electrical record drawings are prepared on the face sheet. The contractor’s signature on the title page shall certify that the drawings are complete and correct. Dimensions and electrical item revisions that deviate from the original plan sheets shall be represented in red to the satisfaction of the Engineer. TABLE OF CONTENTS INDEX 951 Dimensioning for Electrical Underground Materials shall conform to measurement limits outlined within Subsection 732- 4 of the specifications, including offsets taken from the edge of pavement. All pull boxes and foundations shall indicate station number and offsets measured from the edge of pavement. The contractor shall determine the as- built location for all existing and new traffic signal and lighting pull boxes based on station, offset from edge of pavement, milepost, and differential GPS measured latitude and longitude. Loop detectors shall be dimensioned from edge of pavement to center of loop with station number at the front of the loop. Loop tail conduits should be dimensioned from pull box to end of conduit showing length and direction. Electrical Record Drawings shall include all maintenance unit number decals installed on each electrical component, as specified in Subsection 730- 7 of the specifications. The plans for conductor and pole schedule shall reflect all changes made, such as number of conductors, size of conductors or circuit number. All electrical record drawings shall be electronically produced in a format that allows for reproduction in both 11 by 17 inch and 34 by 22 inch sizes. The Engineer will accept the work upon ones approval of all the electronic record drawings. The contractor shall provide an electronic copy of the record drawings in a suitable reproducible format to the Engineer for distribution. 737- 4 Method of Measurement: Maintaining existi ng traffic signals and lighting systems will be measured as a single, complete unit of work. Temporary Traffic Signal will be measured as a single, complete unit of work. Removing and salvaging or reinstalling electrical equipment will be measured as a single, complete unit of work. Electrical record drawings will be measured on a lump sum basis. 737- 5 Basis of Payment: The accepted quantities of maintaining existing traffic signals and lighting systems, measured as provided above, will be paid for at the contract lump sum price, which price shall be full compensation for the work, complete, as specified and described herein, and as shown on the project plans. TABLE OF CONTENTS INDEX 952 The accepted quantities of Temporary Traffic Signal, measured as provided above, will be paid for at the contract lump sum price, which price shall be full compensation for the work, complete in place, as specified and described herein, and as shown on the project plans. The accepted quantities of removing and salvaging or reinstalling electrical equipm ent, measured as provided above, will be paid for at the contract lump sum price, which price shall be full compensation for the work, complete in place, as specified and described herein, and as shown on the project plans. The accepted quantity of electri cal record drawings, measured as provided above, will be paid for at the contract lump sum price, which price shall be full compensation for the work, complete in place.
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