9−93material in order to provide a secure closure of the opening to the satisfaction of the Engineer. There will be no separate payment for this work. Unless otherwise indicated on the Plans, a Plan callout to remove and dispose the foundation of a traffic signal pole or cabinet shall require the removal of the foundation, including all reinforcement, ground rods, and conduit/wiring within, to a minimum depth of twenty-four (24) inches below the finished grade surrounding the foundation, with the remaining portion of the foundation to remain buried in place. The resulting excavated areas shall be backfilled with suitable material, compacted, and finished in accordance with the applicable Sections of these Specifications so that the patched areas will match existing conditions to the satisfaction of the Engineer.
945.05 BASIS OF PAYMENT . “Remove and Dispose Traffic Signal Equipment” and “Remove and
Salvage Traffic Signal Equipment” w ill be paid for in accordance with Section 109.07 of the Standard Specifications and at the Contract lump sum price as listed in the Proposal. The price constitutes full and complete compensation for all labor, materials, equipment, and all incidentals required to finish the work, complete and accepted by the Engineer. Τ−1 PART T TRAFFIC CONTROL SYSTEMS SECTION T.01 ELECTRICAL WORK
T.01.01 DESCRIPTION . This work consists of performing electrical work common to, but not necessarily limited to, the installation of traffic signals, highway lighting and illuminated signs at the locations indicated on the Plans or as directed by the Engineer, all in accordance with these Specifications, the National Electric Code, the National Electric Safety Code, and the electrical utility company. The work includes all material, labor, equipment, and incidentals necessary to provide lighting systems, traffic signal systems and cable systems for police and fire alarm, complete in every respect, and ready for use as specified. The work includes excavation, backfill, conduit and appurtenances, whether encased in concrete, attached to structures or buried in the ground. Wherever reference is made to the code of standards mentioned herein, the reference will be construed to mean the code or standard that is in effect on the date of advertisement for bids. All workmanship will be first class and in accordance with the highest standards of the electrical industry.
T.01.02 MATERIALS. Rigid steel conduit, PVC conduit, fiberglass conduit, handholes, pull boxes, manholes, wire and cable shall conform to the requirements specified in SECTION M.15; TRAFFIC CONTROL AND HIGHWAY LIGHTING SYSTEMS , of these Specifications. Only materials listed and tested by nationally recognized laboratories, and so labeled or identified, will be considered for acceptance for the services indicated. All materials shall be new, and all electrical equipment shall bear the manufac turer's name, trademark, or other descriptive marking by which the organization responsible for the product may be identified. Other markings shall be provided giving voltage, current, wattage, or other ratings as are prescribed elsewhere in these requirements. Electrical equipment shall be designed, manufactured, tested and rated in accordance with ANSI and the National Electrical Manufacturer's Association. All markings shall be of a durability that will withstand the environment involved, as determined by the Engineer. Where two or more items of the class of equipment are required, these units shall be the products of the same manufacturer. All materials shall be approved by the Engineer before installation.
T.01.03 CONSTRUCTION METHODS. T.01.03.1 Foundations. Foundations for mast arm and span poles, lighting standards, pedestal poles, service pedestals, controller cabinets, ground mounted and overhead sign structures, and Τ−2 other equipment shall be constructed of Class A(AE) air entrained concrete for cast-in-place units and Class XX(AE) for precast units, all conforming to the requirements specified in SECTION 601; PORTLAND CEMENT CONCRETE. Concrete for cast-in-place units shall be placed in accordance with SECTION 808; CAST-IN-PLACE STRUCTURE CONCRETE MASONRY , of these Specifications. All foundations shall rest on firm ground and shall be placed monolithically. Conduits and anchor bolts shall be placed in proper position and shall be held in place by means of a template until the concrete sets. Forms shall not be removed until the concrete has hardened properly and not less than 24 hours after the concrete has been placed. All exposed portions of foundations shall be neatly finished with a wood float. The tops of foundations shall be finished flush with the finished grade or as detailed on the Plans. Aluminum surfaces to be placed in contact with Portland cement concrete shall be given a heavy coat of an alkali-resistant bituminous paint before installation. The bituminous paint used shall meet the requirements of United States Military Specification MIL-P-6883. The paint is to be applied as it is received from the manufacturer without the addition of any thinner.
T.01.03.2 Bonding and Grounding. Traffic signals, highway lighting, illuminated sign circuits, conduits and aboveground equipment shall be effectively bonded and grounded as hereinafter specified and as shown on the Plans for the respective installations. Bonding and grounding shall conform to the requirements of the National Electric Code and the utility company. Ground wire and grounding rods shall conform to the applicable requirements set forth in SECTION M.15; TRAFFIC CONTROL AND HIGHWAY LIGHTING SYSTEMS , of these Specifications. The Contractor shall be responsible for maintaining 25 ohm to ground resistance in all systems.
T.01.03.3 Connection with Utility Services. For electrical work, the Contractor shall install conduits and electric conductors as shown on the Plans, in accordance with the requirements of the utility company and subject to its approval. The Contractor will arrange with the serving utility to complete service connections. T.01.03.4 Testing. Upon the completion of each wiring system, and before any connection is made to operating equipment, the Contractor shall perform, in the presence of the Engineer, the following tests of each circuit to determine whether the installations are in acceptable working order:
c.Tests for insulation resistance from circuit wires to ground, and between circuit wires. The insulation resistance shall not be less than the value specified in the National Electric Code. With all equipment connected to the wiring syst em, a functional test shall be performed by the Contractor, in the presence of the Engineer, to demonstrate that the system as a whole, and all parts thereof, function as specified or intended herein. Any defective materials or faulty or improper installation shall be permanently corrected by repai rs or replacements to be made by and at the expense of the Contractor, to the satisfaction of the Engineer and the utility company. Τ−3Lighting circuits shall be subjected to such other tests as may be required by the utility company. It shall be the responsibility of the Contractor to ascertain what tests are required and to perform these tests in the presence of the E ngineer and the utility company's representative. The cost of testing shall be included in the prices bid for other scheduled items of work as specified in SECTIONS T.03 through T.14 , respectively.
T.01.03.5 Painting. Signal heads, including hanger, shall be painted with two coats of federal yellow enamel, except that the inte rior of hoods shall be finished with two coats of flat black enamel, unless specified otherwise. Aluminum or galvanized steel fittings and parts shall not be painted unless part of an adjacent assembly is to be painted. The cost of painting shall be included in the prices bid for other scheduled items of work as specified in SECTIONS T.07 through T.09 and T.11 through T.14 , respectively.
T.01.03.6 Topsoiling and Seeding. Topsoiling and seeding after excavation and backfill shall conform to the applicable requirements of SECTIONS L.01 and L.02, respectively, of these Specifications. The cost of topsoiling and seeding shall be included in the prices bid for other scheduled items of work as specified in SECTIONS T.04 through T.14 , respectively.
T.01.03.7 Shop Drawings. The Contractor shall submit manufacturers' shop drawings, layout drawings and specifications for equipment and appurtenances for the approval of the Engineer, in accordance with Subsection 105.02; Plans and Shop Drawings , of these Specifications.
a.Design Computations. Design computations for ma st arms and poles, span poles and lighting standards shall be complete and shall include but not be limited to the following: consideration for all parts of the structure; consideration for all possible loading combinations including wind and ice loads; and the design stresses and allowable stresses for all components which comprise the proposed structure. All complete shop drawings and design computations shall bear the stamp of a Professional Engineer licensed by the State of Rhode Island. Shop drawings shall be approved prior to fabrication, and it shall be expressly understood and agreed upon that said approval does not relieve the Contractor of its responsibility for the design, fabrication and erection of the structure.
b.Equipment Lists. Within 60 days of signing the contract, the Contractor shall furnish, for the approval of the Engineer, a minimum of five copies of a listing of the controller equipment proposed for use under the contract. The listing shall be supplemented by catalog cuts, manufacturer's specifications, and other descriptive or pictorial data sufficient to identify and explain the method of operation and construction of the proposed equipment. Upon approval, the Engineer will retain four copies and return one approved copy to the Contractor. T.01.03.8 Existing Systems. Where existing systems are to be modified, the existing equipment and materials shall be salvaged and incorporated in the revised system, salvaged for other use by the Department, or removed and disposed of by the Contractor, as may be provided in the Plans or as specified. Material required to be salvaged shall be removed carefully and stockpiled on site at the location designated in the Contract Documents, or as directed by the Engineer. Existing equipment and materials specified for reuse, or to be reserved for the Department, which are Τ−4 disturbed, damaged or removed in performing the work shall be repaired or replaced with equivalent, new equipment and materials acceptable to the Engineer, at no expense to the State. Existing systems or portions thereof may be abandoned in place only with written permission of the Engineer.
T.01.03.9 Lines and Grades. It shall be the responsibility of the Contractor to arrange for the furnishing of lines and grades as may be necessary to lay out the work correctly, all as specified in Subsection 105.08 of these Specifications.
T.01.03.10 Excavation and Backfill. Excavation and backfill for the construction of manholes, handholes, foundations, conduits, cables and other appurtenances shall conform to the applicable requirements of SECTION 203; STRUCTURE EXCAVATION AND BACKFILL , of these Specifications. T.01.03.11 Disruption of and Damage to Existing Improvements . All pavements, curbs, gutters, culverts, guardrail, sidewalks, walls, landscaping, conduit or wire, and all other existing improvements removed due to construction, damaged or injured by any reason of or resulting from the Contractor's operations, shall be replaced or reconstructed of similar materials in a manner satisfactory to the Engineer at no additional cost to the State. When placing foundations, handholes, or conduit in existing bituminous sidewalks, the entire width of sidewalk shall be replaced. In the case of concrete sidewalks, saw cuts shall be made at score lines and the entire square of concrete shall be replaced. Saw cuts shall be made at no additional cost to the State. T.01.04 METHOD OF MEASUREMENT. "Electrical Work" will not be measured separately but will be included in the measurement of specific items such as conduit, foundations, standards and posts, luminaires, traffic signal controllers and tr affic signal heads. Measurement for payment will be as specified in SECTIONS T.04 through T.14 , respectively.
T.01.05 BASIS OF PAYMENT. "Electrical Work" will not be paid for separately but will be included in the price of specific items, as listed in the Proposal, such as conduit, foundations, standards and posts, luminaires, traffic signal controllers, wire and cable, and traffic signal heads, as specified in SECTIONS T.04 through T.14 , respectively. The cost of excavation and ba ckfill for manholes, handholes, f oundations, conduits, cables, and other appurtenances, shall be included in the pric es bid for such structures and appurtenances. The excavation of rock encountered in the excavation for the above mentioned structures and appurtenances will be paid for under the provisions of "Trench Excavation - Rock" as set forth in SECTION 205; TRENCH EXCAVATION , of these Specifications. Τ−5SECTION T.02 HIGHWAY LIGHTING
T.02.01 DESCRIPTION. This work consists of furnishing and installing highway lighting of multiple circuit type and/or modifying ex isting highway lighting in accordance with the dimensions and details indicated on the Plans or as directed by the Engineer, all in accordance with these Specifications. A highway lighting installa tion will be composed of two systems; one underground and the other aboveground. The underground multiple circuit installation will consist of conduits, handholes, and concrete foundations for lighting standards or service pedestals. The aboveground multiple circuit installation will c onsist of lighting poles, luminaires, lamps, service pedestals, wiring, bonding, grounding and all other incidental work. Reference is made to the following Sections which are relevant to highway lighting: SECTION T.03, GROUND RODS AND BARE OR INSULATED GROUND WIRE SECTION T.04, WIRE AND CABLE SECTION T.05, HANDHOLES, MANHOLES, AND PULL BOXES SECTION T.06, CONDUIT SECTION T.07, LUMINAIRES SECTION T.08, ALUMINUM LIGHT STANDARDS AND FOUNDATIONS SECTION T.09, SERVICE PEDESTAL
T.02.02 MATERIALS. Refer to SECTIONS T.03 through T.09 for specifics on materials.
T.02.02.1 Warranties for Highway Lighting Installations.
a.Manufacturer’s Warranties . Copies of any warranties that the Contractor receives from each manufacturer on all electrical or mechanical equipment pertinent to the complete and satisfactory operation of highway lighting installati ons shall be turned over to the Department at the time of acceptance at no cost to the Department. Each warranty so furnished shall indicate its expiration date, and be in effect for a period equal to the customary trade practice.
b.Contractor’s Warranties . The Contractor will warranty the satisfactory in-service operation of the mechanical and electrical equipment and related components for six months following the acceptance of the contract by the State. During this period, it will be the Contractor’s responsibility, when notified by t he Engineer, to repair or replace equipment or materials necessary to insure satisfactory operation of the system, and to correct malfunctions attributable to installation deficiencies. All workmanship, parts, tools, equipment and all appurtenances necessary to correct malfunctions attributable to installation deficiencies are to be supplied by the Contractor at his own expense. Any labor necessary to comply with the requirements of the manufacturer’s and Contractor’s warranties will be compensated by force account. Τ−6 T.02.03 CONSTRUCTION METHODS. Refer to SECTIONS T.03 through T.09 for specifics on construction methods. T.02.04 METHOD OF MEASUREMENT. "Highway Lighting" will not be measured separately but will be included in the measurements of specific items such as conduit, cable, luminaires, poles, bases, handholes, etc. Refer to SECTIONS T.04 through T.09 for specific methods of measurement. T.02.05 BASIS OF PAYMENT. "Highway Lighting" will not be paid for separately but will be included in the price of specific items as listed in the Proposal and outlined above in Subsection
T.02.04. SECTION T.03 GROUND RODS AND BARE GROUND WIRE
T.03.01 DESCRIPTION. This work consists of effectively grounding lighting circuits, service pedestals, conduits, lighting and signal poles, illuminated sign circuits and traffic signal controller cabinets as shown on the Plans or as directed by the Engineer, all in accordance with these Specifications and the requirements of the National Electric Code.
T.03.02 MATERIALS. Ground rods will conform to the requirements of Subsection M.15.01 of these Specifications. Ground wire will conform to the requirements of Subsection M.15.02.2 of these Specifications.
T.03.03 CONSTRUCTION METHODS. Equipment grounding conductors will be provided for all lighting circuits between service pedestals and li ghting standards. Conductors will be connected to each ground rod at each handhole and at each lighting standard. Ground rods shall extend 3 inches to 6 inches above the floor of the handhole. Ground rods shall be driven to a depth such that the resistance to ground does not exceed 25 ohms. The measurement shall be measured by common industry pr actice in the presence of the Engineer, with the ground wire disconnected from the neutral. In the event that after driving the rod beyond the minimum depth, the re sistance still exceeds 25 ohms, additional ground rods shall be driven outside the handhole approximately 6 feet apart to a depth of 8 feet and connected in parallel with No. 6 AWG bare conductors until the resistance to ground does not exceed 25 ohms. The bare conductors shall be then pulled into the handhole through a hole drilled in its side, 6 inches below grade, and connected to the neutral wire and the conduit system. Τ−7The conductors and the top of ground rods outside the handholes shall be placed a minimum of 6 inches below grade. Only U.L.-approved ground wire clamps shall be used to bond the conductor to the ground rod. Ground rods shall be driven in all handholes servicing light standards, traffic signal equipment and at such other locations as specified on the Plans or as directed. If no ground rod is used in the equipment base, the C ontractor shall install a ground wire from the grounding lug on the equipment ground to the nearest ground rod, at no additional cost to the State. The Contractor shall furnish the Engineer with the results of all resistivity tests, indicating the values obtained for each installation. This report shall become a permanent project record. T.03.04 METHOD OF MEASUREMENT. "Ground Rods" and "Bare Ground Wire" shall not be measured for payment but shall be included with the pay item with which they are associated. Additional "Ground Rods" required to reduce the resistance to ground below 25 ohms will be measured separately in accordance with these Specifications and/or as directed by the Engineer. Additional ground wire will not be paid for separately but shall be included in the cost of additional ground rods. T.03.05 BASIS OF PAYMENT. "Ground Rods" and "Bare Ground Wire" will not be paid for separately but shall be included with the pay item with which they are associated. The accepted quantities of additional "Ground Rods" will be paid for in accordance with Subsection 109.04; Differing Site Conditions, Change, Extra Work, and Force Account Work , of these Specifications. SECTION T.04 WIRE AND CABLE
T.04.01 DESCRIPTION. This work consists of furnishing and installing wire and cable of the type and at the locations indicated on the Plans, or as directed by the Engineer, all in accordance with these Specifications. This work also includes the use of material and equipment for furnishing and installing splice kits in handholes and manholes, as indicated on the Plans or as directed by the Engineer, all in accordance with these Specifications.
T.04.02 MATERIALS. Wire, cable and splice kits shall conform to Subsection M.15.02 of these Specifications.
T.04.03 CONSTRUCTION METHODS. Splices, taps and terminations shall be made using premolded splice kits fabricated of 6061-T aluminum and insulated with EPDM rubber compound rated for 600 volts and capable of accepting copper conductors. This splice has four terminals and can be used for a two-, three-, and four-way splice application. The splice is to be suitable for submersible installations Τ−8 Note: Taped splices are allowed only as temporary installations, as directed by the Engineer. Taped splices must be “built-up” and rated for 600 volts using self-vulcanized high voltage tape covered with two (2) layers of PVC tape. Wires and cables shall be handled carefully during storage. All conductors and cables shall be drawn into the conduit system without damage to covering sheath insulation or conductor. Wiring shall not be done until the raceway system has been completed. Only lubricant manufactured specifically to assist cable pulling shall be used. Wires on poles shall be installed by a licensed electrician and/or a licensed journeyman. Wiring installed in raceways shall have slack cable left at all pulling points. No wiring shall be installed until conduit systems have been approved by the Engineer. Installation of splice kits shall be as recommended by the manufacturer and the National Electric Code. All splices shall be in a handhole, manhole or junction box. The Contractor shall submit for approval the manufacturer's notarized certificates of compliance for all wire and cable.
T.04.04 METHOD OF MEASUREMENT. T.04.04.1 Wire and Cable. "Wire" and "Cable" will be measured by the linear foot of each type actually installed in accordance with the Plans and/or as directed by the Engineer. Measurement shall be along the centerline of the conduit. A 5-foot allowance will be made for slacked cables in handholes. A 6-foot allowanc e will be made for slacked cables in traffic signal controller cabinets.
T.04.04.2 Splice Kits. "Splice Kits" will be measured by the number of units actually installed, regardless of the number of actual splices made each unit, all in accordance with the Plans and/or as directed by the Engineer.
T.04.05 BASIS OF PAYMENT.
T.04.05.1 Wire and Cable. The accepted quantities of "Wire" and "Cable" will be paid for at their respective contract unit prices per linear foot of the various types as listed in the Proposal. The prices so-stated constitute full and complete compensation for all materials, equipment, tools, labor and all incidentals required to finish the work, complete in place and accepted by the Engineer.
T.04.05.2 Splice Kits. "Splice Kits" will be paid for at the contract unit price per each as listed in the Proposal. This unit price includes the labor cost to install splice kits for two, three and four-way splice applications. The contract unit price constitutes full and complete compensation for furnishing and installing all tools, labor, splice kits, equipment and all incidentals required to finish the work, complete in place and accepted by the Engineer. Τ−9SECTION T.05 HANDHOLES AND PULL BOXES
T.05.01 DESCRIPTION . This work consists of providing Precast Type “A” Handholes, Precast Type “B” Heavy Duty Handholes, and Precast Type “H” Heavy Duty Handholes at the locations indicated on the Plans or as directed by the Engineer. The work also includes the provision of Type “V” and Type “W” Pull Boxes on those structures indica ted on the Plans. All such work will be in full accordance with these Specifications.
T.05.02.1 Precast Handholes and Pull Boxes . Precast handholes and pull boxes shall conform to Subsection M.15.03.1 of these Specifications.
T.05.02.2 Metal Pull Boxes . Pull boxes shall conform to Subsection M.15.03.2 of these Specifications.
T.05.03 CONSTRUCTION METHODS.
T.05.03.1 Plant Requirements for Precast Units .
a.Casting. Precast concrete units shall be cast true and square in accordance with the applicable details as shown on the Plans. Dimensions of units shall be accurate within the following tolerances: Dimension Tolerance ± Greater than 0" to 12" 1/4" Greater than 12" to 24" 1/2" Greater than 24" to 72" 3/4"
b.Manufacture. Precast concrete units shall be designed and manufactured in accordance with ASTM C478; “Precast Concrete M anhole Sections,” with t he additional stipulation that the concrete mix design shall be Class XX(AE) as set forth in SECTION 601 of these Specifications.
c.Inspection. All precast concrete units shall be inspected both at the points of manufacture and on the project site. Any units showing defects or damage shall be removed and replaced by the Contractor at no additional cost to the State.
T.05.03.2 Setting. Except as otherwise specified, precast units shall be placed on previously prepared gravel borrow subbase to the lines and grades shown on the Plans. The grade of the handhole frame and cover shall be even with the surrounding ground or as directed by the Engineer. The maximum allowable adjustment for the frame and cover is 3- inches All holes for conduit and ground wire shall be drilled. No punched holes will be allowed. All holes drilled in handholes shall be grouted with a material approved by the Engineer. The frame and cover are to be provided wi th a ground connector and both items shall be bonded to the ground Τ−10 rod using a #6 bare ground wire.
T.05.03.3 Metal Pull Boxes. Pull boxes, when used in cast-in-place bridge parapets or barrier, shall conform to the details indicated on the Plans and shall be adequately anchored in place to prevent displacement during concrete pouring operations. Surface mounted pull boxes shall be anchored with stainless steel mechanical anchors.
T.05.03.4 Excavation. Excavation for precast handholes and pull boxes shall be completed as nearly as practicable to the dimensions shown on the Plans.
T.05.04 METHOD OF MEASUREMENT. “Precast Type “A” Handholes,” “Precast Type B Heavy Duty Handholes,” “Precast Type “H” Heavy Duty Handholes,” and “Type “V” Pull Boxes” and “Type “W” Pull Boxes” will be measured by the number of units of each type actually installed in accordance with the Plans and/or as directed by the Engineer.
T.05.05 BASIS OF PAYMENT. The accepted quantities of “Preca st Type “A” Handholes,” “Precast Type B Heavy Duty Handholes,” “Precast Type “H” Heavy Duty Handholes,” “Type “V” Pull Boxes” and “Type “W” Pull Boxes” will be paid for at their respective contract unit prices per each such type as listed in the Proposal. The prices so-stated constitute full and complete compensation for all materials, labor, tools, and equipment including concrete, ground wire, grounding clamps and support grips, ground rods, gravel, cast iron frame and cover, grounding of frame and cover, excavation and backfill, and for all incidentals required to finish the work, complete in place and accepted by the Engineer. Payment for "Trench Excavation - Rock" will be made under the applicable provisions of SECTION 205; TRENCH EXCAVATION , of these Specifications. SECTION T.06 CONDUIT
T.06.01 DESCRIPTION . This work consists of furnishing and installing rigid steel conduit, polyvinyl chloride (PVC) plastic conduit, and fiberglass conduit of the size specified, including the necessary fittings, at the locations indicated on the Plans or as directed by the Engineer, all in accordance with these Specifications.
T.06.02 MATERIALS. Conduit and fittings shall conform to Subsection M.15.04 of these Specifications.
T.06.03 CONSTRUCTION METHODS. All work shall be performed strictly in accordance with the requirements of the National Electrical Code, latest Edition.
T.06.03.1 Rigid Steel Conduit. Conduit shall be installed as shown on the Plans or as directed by the Engineer. Bends which are not smooth or which show any evidence of flattening or destruction of the protective coating will not be accepted. All joints requiring rethreading shall be made with a
Source: Rhode Island Standard Specifications (Bluebook), 2024 Edition. Pages 625–636 of 826.