756.01 Description.
751-D Replace (4) - per each 751-E Replace High Mast (5) - per each 751-F Renumber Luminaire Poles – per each 751-G Remove and Store (6) - per each 751-H Install State Property (6) - per each 751-I Install State (7) - per each 751-J Remove Luminaire Pole Foundation, (2) - per each 751-K Replace (8) – per each 751-L Remove (6) - per each 751-M Remove (9) – per Lump Sum 751-N Modification of Existing (6) - per each
1.Number of circuits, type (WP, DE, A, G, NT or Special)
2.High Mast, Concrete, A uger Base or Special
3.Lighting Control Center Interior, Circuit Breakers, Contactor, Control, Transformer, Photo Electric Cell, Test Switch, Terminal Strip or Ground Rod
4.Luminaire Support Arm, Lighting Pole, Transformer Base, Transformer Base Cover, Surge Arrester, Breakaway Fuse Holder, Fuse in Pole Base, Roadway Luminaire, 5 Amp Fuse, Igniter,
H.P.S. Lamp, Fusible Plug, Distribution Block, Pole Cable, Submersible Splice Kit, Ballast or Starter
5.Lowering Device, Head Frame Assembly with Cover, Mounting Ring Assembly, Portable Power Unit, Clevis Plate with Hoisting Cable, Winch and Mounting Plate, Motor Mounting Bracket, Head Frame Roller Assembly, Latch Barrel Assembly, Latch Pin, Power Cord, Luminaire, Ballast, or Lamp
6.Lighting Control Center, Circuit Breaker, Contactor, Control Transformer, Test Switch, Terminal Strip, Photo Electric Receptacle, Service Pole, Lighting Pole, Luminaire Support Arm, Transformer Base, Surge Arrester, Fuse Holder, Roadway Luminaire, Roadway Luminaire Assembl y, High Mast Luminaire, High Mast Luminaire Assembly, H.P.S. Lamp, Roadway Luminaire Lowering Device System, High Mast Head Frame Assembly, High Mast Mounting Ring Assembly, High Mast Clevis Plate with Hoisting Cables, Winch and Mounting Plate, Power Cord, electrical junction box, etc.
7.Roadway Luminaire Assembly or High Mast Luminaire Assembly
8.High Mast, Roadway, Cobra Head, Modified Cobra Head, Offset or Segmented Reflector
9.Conductors, Conduits, Conductors and Conduits ELECTR ICAL CONDUITS UNDER ROADWAYS
756.01 Description.
This Section shall cover the work of furnishing and installing electrical conduits as detailed by the plans and these specifications. The installation shall include placement of the conduit at the location shown on the plans or directed by the Engineer. All electrical conduits installed under this Section shall be encased, with the kind of encasement depending on the type of installation as follows: Type 1 installation - conduit installed by open trench method and having a concrete encasement. Type 2 installation - conduit installed by an approved jacking or boring procedure and having a steel pipe encasement. Type 3 installation - conduit installed by open trench method and having a bituminous plant mix backfill and surface treatment (when required). Type 4 installation - conduit installed by open trench method, having a pipe encasement as shown on the plans, and backfilled as shown on the plans. Type 5 installation - conduit installed by a precision directional boring method and having a high-density polyethylene (HDPE) e ncasement.
756.03 Construction Requirements.
756.02 Materials.
Materials shall meet the appropriate requirements of Division 800, Materials, and the requirements noted in this Article. Conduit shall meet the requirements of Article 885.06. Metal encasement pipe shall meet the requirements of Section 862. Concrete used to encase conduit in a Type 1 installation shall be Class A concrete meeting the requirements of Section 501. All electrical equipment shall conform to the standards of the National Electrical Manufacturers' Association (N.E.M .A.), or Underwriters Laboratory, whichever is applicable. Workmanship and materials shall conform to the requirements of the National Electrical Codes, National Electrical Safety Code and with any local codes or ordinances governing electrical installatio ns. All materials and equipment shall be new, except where the plans specifically provide for re -using existing equipment. Within 30 days after execution of the contract, the Contractor shall submit to the Engineer a list of materials which he proposes to use. The list shall show the name of the manufacturer, size, name and identifying catalog number of each item. If requested by the Engineer, the Contractor shall submit for inspection and approval samples of the proposed substitute item and bear any extra costs of evaluating the quality of the materials. All lists shall be submitted in quintuplicate for checking and approval. The Department will not be liable for any materials purchased or work done or any delay incurred prior to such approval. Failure of t he Engineer to note unsatisfactory material as received will not relieve the Contractor from responsibility. Omissions from the drawings and specifications, or the misdescription of details of work which are evidently necessary to carry out the intent of t he drawings and specifications, or which are customarily performed, shall not relieve the Contractor from performing such omissions and details of work, but they shall be performed as if fully and correctly set forth and described in the drawings and speci fications. In any case of discrepancy in figures, catalog numbers, descriptions in the drawings or in the specifications, the matter shall be promptly submitted to the Engineer who shall promptly make a determination in writing. Any adjustment by the Contr actor shall be at the Contractor's own risk and expense. For a Type 3 installation, the trench backfill shall be ALDOT #100 concrete sand and Bituminous Concrete Plant Mix, ALDOT 429, as shown on the plans. For a Type 4 installation, the trench backfill sh all be as shown on the plans. For a Type 5 installation, the encasement conduit shall be high -density polyethylene (HDPE). The conduit shall meet the requirements given in ASTM F 2160, "Standard Specification for Solid Wall High Density Polyethylene (HDPE) Conduit Based on Controlled Outside Diameter (OD)". The conduit shall be Schedule 80 or DR 11. The color of all conduits shall be in compliance with the recommendations of the American Public Works Association for the use of the ULCC Uniform Color Code. T he color of conduits for electrical power shall be black with longitudinal red striping. The color of conduits for communication media including traffic signals shall be orange or black with longitudinal orange striping. The red or orange longitudinal stri ping on each conduit shall be at least three stripes spaced at equal distances apart on the circumference of the conduit. The stripes shall be an integral part of the conduit material. Tape and paint stripes will not be accepted for installation.
756.03 Construction Requirements.
a.General . All construction and installation of electrical conduits shall be done under direction of specially qualified supervisors. All workmanship shall be in accordance with the latest accepted standard of the industry, as determined by the Engineer. Upon completion of the contract, the Contractor shall deliver to the Engineer a corrected plan showing in detail the actual location and depth of conduits. Improvements, such as sidewalks, curbs, gutters, Portland cement concrete and asphaltic concrete pavement, bituminous surfacing, base material, and any other improvements broken or damaged by the Contractor, shall be replaced or reconstructed with the same kind of materials as found on the work, or with materials of equ al quality. The new work shall be left in a serviceable condition satisfactory to the Engineer. Whenever a part of a square or slab of existing concrete sidewalk or driveway is broken or damaged, the entire square or slab shall be removed and the concrete reconstructed as above specified. The outline of all areas to be removed in Portland cement concrete sidewalks and pavements shall be cut to a minimum depth of 1.5 inches {40 mm} with a saw, prior to removing the sidewalk and
756.03 Construction Requirements.
pavement materials. Cut for th e remainder of the required depth may be made by a method satisfactory to the Engineer. Cuts shall be neat and true with no shatter outside the removal area.
b.Open Trench Method . The excavations required for the installation of conduits shall be perform ed in such a manner as to cause the least possible injury to the street, sidewalks, and other improvements. The trenches shall not be excavated wider than necessary for the proper installation of the electrical appliances and foundations. Excavating shall not be performed until immediately before installation of conduit and other appliances. The material from the excavation shall be placed in a position where the least damage and obstruction to vehicular and pedestrian traffic, and the least interference wi th the surface will occur. All surplus excavated material shall be removed and disposed of by the Contractor, as directed by the Engineer. Excavations after backfilling shall be kept well filled and maintained in a smooth and well drained condition until p ermanent repairs are made. At the end of each day's work and at all other times when construction operations are suspended, all equipment and other obstructions shall be removed from that portion of the roadway open for public travel. Coordination of this type work with regular roadway or bridge work will be of prime importance to prevent undue damage to completed items of work or existing facilities. Any damage to existing facilities caused by the installation of the ducts shall be repaired by the Contract or at no additional cost to the State.
c.Jacking or Boring Method . All conduits installed under paved areas shall be encased in steel pipe. Installation of the casing shall be made prior to placement of the pavement or it shall be jacked or bored through the roadbed under the pavement providing a minimum cover of 30 inches {750 mm}. The jacking or boring procedure and equipment shall be such that placement of the casement shall be accomplished without producing an unsupported opening through the roadbed b etween the established ends of the required length of casing. In no event should casing lengths be less than the distance between shoulder limits of a roadway. The drilling and mud bore method will be acceptable provided the requirements noted in Subarticl e 730.03(a) are complied with.
d.Precision Directional Boring Method . All conduits installed under paved areas shall be encased in HDPE duct. Installation of the casing shall be made prior to placement of the pavement or it shall be precision directional bored through the roadbed under the pavement at the depth shown on the plans or as approved by the Engineer. The precision directional boring procedure and equipment shall be such that placement of the casement shall be accomplished without producing an unsupported opening through the roadbed between the established ends of the required length of casing. In no event should casing lengths be less than the distance between shoulder limits of a roadway. The casing shall be installed by drilling a hole with an open type bit that leaves the cuttings in place. A gel -forming colloidal drilling fluid consisting of at least 20%* high grade carefully processed Bentonite may be used to consolidate cuttings of the cutting bit, seal the walls of the hole and furnish lubrication for subsequent removal of cuttings and installations of the casing immediately thereafter. In this method, when drilling through a dense formation, cuttings may be partially removed from the hole in 3 foot {0.9 m} plugs by use of compressed air as drilling progresses. However, in low density soils of a sandy or silty nature, a plug shall be installed in the mouth of the bore (hole) to prevent the movement of any cuttings from the hole until immediately before installation of the casing. No bit larger than 3 inches {76.2 mm} in diameter shall have holes therein larger than 5/16 inches {8 mm} in diameter through which drilling fluid is forced during boring. The casing shall be installed immediately after the casing hole is completed. In no case will w ater be used to flush cuttings from the drill hole. The cuttings shall remain in the bore hole except as previously provided for as drilling progresses so as to consolidate them to support the bore wall. The filter cake which is formed by the cuttings and drilling fluid prevents cave -in or sloughing of the drill hole. On completion of the boring, the hole will be swabbed out by pulling through the hole the casing attached to a suitable swab. Violation of any of the above provisions by the Contractor will result in the suspension of work. * NOTE: By Volume. For instance, 20 gallons {20 L} Bentonite to 80 gallons {80 L} of water.
757.03 Construction Requirements.
756.04 Method of Measurement.
The accepted amount of electrical conduit of the type installation required shall be measured by the linear foot {meter} to the nearest foot {0.1 m}.
756.05 Basis of Payment.
a.Unit Price Coverage . The accepted electrical conduit, measured as noted above, will be paid at the contract unit price bid for the type installation involved. Said unit price bid shall be full compensation for the furnishing and installation of the electrical conduit, for the specified pipe or concrete encasement, for any required backfill material, for all excavation and backfill , jacking or boring, disposal of excess material, and for all labor, tools, equipment, and incidentals necessary to complete the work.
b.Payment will be made under Item No .: 756-A ___ inch {mm} Electrical Conduit, * Lines, Type ** Installation - per linear foot {meter} * Specify number of lines in installation ** Specify type of installation SECTION 757 PORTABLE TRAFFIC SIGNAL
757.01 Description
This Section shall cover the work of furnishing new portable traffic signals or utilizing State furnished portable traffic signals. The furnishing of new portable traffic signals includes all services and operational supplies necessary to provide a functional portable traffic signal unit. All portable traffic signals shall comply with the Manual on Uniform Traffic Control Devices (MUTCD), publications of the Institute of Transportation Engineers (ITE), the National Electrical Manufactures Association (NEMA), the National Electrical Code (NEC), and the International Municipal Signal Association (IMSA ).
757.02 Materials.
The portable traffic signal unit shall be complete with power supply, controller, structural support system, all applicable software, communications, and manuals. Portable traffic signals shall be designated according to their type bas ed on Table 4 PTS Type Designations shown in NEMA TS 5 -2017, “Standard for Portable Traffic Signal Systems (PTSS) Standard,” or latest revision.
757.03 Construction Requirements.
a.General. The Contractor shall set up and level the unit at the designated location shown on the plans and approved by the Engineer. The portable traffic signal unit shall be placed on a base consisting of a fine aggregate compacted to the satisfaction of the Engineer or alternate location approved by the Engineer. After setup and leveling, the Contractor shall secure the portable traffic signal trailer to protect from theft. If the unit is stolen, the Contractor shall be required to replace the unit at his own expense. The Contractor shall provide adequate flaggers on a 24 -hour per day, 7 day a week basis until the unit is replaced and fully operational. Signal heads positioned over a road surface shall be mounted a minimum of 17 feet from the bottom of the signal head to the top of the road surface. All other signal heads sh all be mounted at a minimum of 8 feet from the bottom of the signal head to the top of the ground surface. The Contractor shall clean, service and repair State furnished units when the Engineer determines that the portable traffic signal unit is no longe r needed, and shall return the unit to the specified location shown on plans or specified by the Engineer. The aggregate pad shall be removed and disposed of as directed by the Engineer.
b.Pay Item 757 -A. The Contractor shall furnish a new or used porta ble traffic signal unit, and shall be totally responsible for the required performance of the signal. An acceptable portable traffic signal unit shall be one of the units listed on List IV -3, WORK ZONE TRAFFIC CONTROL DEVICES, Sub -Heading “Portable Traffic Signals” of the Department’s “Materials,
Source: Alabama Standard Specifications for Highway Construction, 2022 Edition. Pages 703–705 of 934.