529Navigation Lighting

529.1General Description

This work consists of furnishing and installing navigation lighting (complete or to the extent indicated on the plans) on bridges and on fender systems where required on the plans and approved Shop and Work Drawings. The specification’s intent is to secure a complete, operational system according to the National Electrical Code and applicable local ordinances. 529.1.01 Definitions Qualified Electrician: A journeyman electrician with one of the two following classifications: • Has a Class II license issued by the Georgia State Construction Industry Licensing Board • Has completed an approved four-year apprenticeship training program 529.1.02 Related References

National Electrical Code ASTM A 123/A 123M 529.1.03 Submittals

The Contractor performing this work must be on the Department’s list of approved electrical contractors or electrical subcontractors.

To avoid misunderstanding and ensure compliance with the Specifications, submit to the Engineer for approval a complete list of the products proposed for use before purchasing materials or equipment. Products must comply with plan requirements to be approved. The product list shall include the following information: • Manufacturer’s name for each item • Manufacturer’s catalog number for each item Where the Engineer deems necessary, alternate equipment will be specified.

Pay the fees and obtain the permits required by power companies and governmental agencies. 826 826 826 826 826 826

529.2Materials

All electrical material shall be approved by the Underwriter’s Laboratory or other acceptable testing agency. Ensure that materials conform to the requirements of the following Specifications: Material Section Wood Pole 863 Disconnect Switch 924.2.05 Magnetic Contactor 924.2.07 Lightning Arrester 924.2.03 Miscellaneous Electrical Materials 924 Electrical Conduit 923 Ground Rod 924.2.01 Luminaries and Lamps 921 Electrical Wire and Cable 922 Miscellaneous Steel Materials 852 Photoelectric Control 924.2.06 If this Specification or the Plans omit any item needed to install and operate the navigation lighting satisfactorily, include the item in the system. If necessary, have a qualified person (including a Registered Professional Electrical Engineer) check, verify, or modify (with the Department’s permission) the Contract requirements. The Department will review and approve a person’s qualifications. 529.2.01 Delivery, Storage, and Handling General Provisions 101 through 150.

529.3Construction Requirements

529.3.01 Personnel

Have a Qualified Electrician on the job site when electrical wiring is being pulled or electrical connections are being made. Ensure that the Qualified Electrician possesses evidence of classification and displays this evidence to the Department’s engineer in charge of the construction. 529.3.02 Equipment General Provisions 101 through 150. 529.3.03 Preparation General Provisions 101 through 150. 529.3.04 Fabrication General Provisions 101 through 150. 827 827 827 827 827 827

529.3.05 Construction

Comply with the following: • Local ordinances, rules, and regulations • The plans The plans are not intended to show the complete details of the overall work, but they will indicate the general layout and designate acceptable manufacturers’ equipment. • Approved Shop and Working Drawings, including drawings by others, if any

Take responsibility for the following: • Provide fittings, devices, materials, and work necessary to install the complete, functional system. Any necessary drilling, cutting, patching, galvanizing repair, and other work required because of misplaced or plugged conduit or improper workmanship shall be done without additional compensation and shall be approved by the Engineer. • Ensure that electrical work is adequate.

When a bridge is under construction, provide the lights and other signals necessary for protecting navigation as may be prescribed by the U.S. Coast Guard.

The following steel items shall be galvanized according to ASTM A 123/A 123M, except the weight of zinc coating per square foot (meter) of actual surface for 1/8 in. (3 mm) and 3/16 in. (5 mm) steels shall average at least 1.25 oz (375 g) and no individual specimen shall show less than 1.0 oz (300 g). • Structural steel conduit support angles on fender system • Junction boxes, except stainless steel • Conduit clamps and screws • Luminaire retriever chain and swivel • Lag screws Powder-actuated galvanized studs may be of commercial galvanizing quality. Repair damaged galvanized areas according to Section 645.

Furnish and install as required by the National Electrical Code the conduit, boxes, fittings, wiring, supports, and accessories required to complete the work.

Ensure that conduit connections are waterproof. Provide approved conduit expansion joints at each bridge expansion joint. Use flexible conduit when going from the bridge superstructure to the substructure, from the bridge to the fender system, and in the transition areas between rigid members.

Unless otherwise shown on the Plans, use 1-1/4 in. (32 mm) rigid galvanized steel conduit for the service riser and along the bridge.

Unless otherwise specified on the Plans, use 1-1/4 in. (32 mm) nonmetallic conduit for the underground conduit between the service riser and the bridge. Join underground conduit according to the manufacturer’s recommendations and bury it at least 24 in. (600 mm). 828 828 828 828 828 828

The conduit placed along the fender system walkway may be 1 in. (25 mm) size and shall be either liquid tight flexible conduit or rigid galvanized steel conduit. Use the conduit size specified on the plans.

Use flexible conduit to connect the rigid galvanized steel conduit located on the faces of pier or bent columns to the conduit located on the fender system walkway. Ensure this flexible conduit has waterproof couplings and is of sufficient length and slack to permit at least 2 ft. (600 mm) of horizontal movement in each direction.

Install conduit as follows:

boxes, luminaires, etc.

fender system. The Contractor may use powder-actuated galvanized studs and clamps to fasten the following items (located underneath the bridge and down the face of pier or bent columns) to the concrete: • Rigid galvanized steel conduit • Expansion devices

Pull and junction boxes mounted on bridges and the fender system shall be waterproof; shall be made of galvanized steel, stainless steel, or cast aluminum; and shall comply with the National Electrical Code. There are two options for providing pull and junction boxes to be installed in the ground: • Construct the boxes according to the Plan design and dimensions and at the locations shown on the Plans. Construct the concrete boxes of Class A Concrete meeting the applicable requirements of Section 500, including precast concrete boxes. • Furnish and install manufactured boxes approved by the Engineer. Manufactured boxes will be permitted when the Engineer determines they are equal to the boxes constructed of Class A concrete in design, quality, and structural strength. Boxes must meet the requirements of Section 500. Provide with each pull or junction box cast iron, steel, or reinforced concrete covers as shown on the Plans.

Install pull and junction boxes as follows:

underneath the bridge and down the face of pier or bent columns to the concrete.

plastic, bituminous fiber, or other material approved to keep out foreign matter.

Install luminaires as follows unless otherwise shown on the plans:

plated expansion bolts.

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Unless otherwise noted, the power supply shall be 120/240 volts, 3-wire, and single phase. The Department and the serving electric utility will agree upon the supply point, which in most cases will be near the Rights-of-Way line near the bridge location.

Set up a service pole as follows:

Specifications), set up a wood pole that complies with Section 863. The pole shall be at least 30 ft. (9 m), Class 5, or as shown on the plans.

• A metallic service riser with a weatherhead • A weatherproof enclosure containing a fusible disconnect switch of the appropriate voltage and ampere rating or as shown on the plans (see Subsection 529.3.05.H, Power Control, for information on additional items contained in the waterproof enclosure) • An underwriter-approved meter base in the service riser (where required by the power company or where indicated on the plans)

Furnish and install an approved lightning arrester at the weatherproof enclosure on the service pole and connect it to the grounding system.

Construct the grounding system as follows: • Install a ground rod adjacent to the service pole. • Connect neutral and grounding conductors to the ground rod. • Install a separate, continuous copper grounding conductor (green) throughout the system. • Solidly connect metallic, noncurrent carrying materials in the lighting system to the grounding conductor. • Drive single ground rods vertically until the top of the rod is at least 12 in. (300 mm) below the finished ground. • Attach a length of No. 6 AGW bare copper, 7-stranded wire to the ground rod with suitable ground rod clamps. Connect this wire to the neutral and grounding conductors at the service pole.

When the above procedure does not result in sufficient penetration, construct a ground rod system as follows:

(300 mm) below the finished ground.

ground rod clamps and No. 6 AWG bare copper, 7-stranded wire.

Unless otherwise specified on the Plans or the Specifications, furnish the following items for each service pole:

• Photoelectric control complete with receptacle and accessories. The control shall provide ON

operation as indicated under Subsection 924.2.06, Photoelectric Controls.

• Disconnect switch

• Magnetic contactor. The contactor shall supply power to the lighting circuit.

• Transformer. If the supply voltage is other than 120/240 volts, furnish and install a transformer to provide

120-volt control voltage

• NEMA-3R lockable weatherproof enclosure(s) 830830830830830830

The disconnect switch and magnetic contactor shall have the number of poles required to open each ungrounded

conductor and shall be accessible from the ground.

Install the following items as follows:

The photoelectric control shall operate the magnetic contactor.

Mount the disconnect switch, magnetic contactor, and transformer, if required, in NEMA-3R lockable

weatherproof enclosure(s) on the service pole.

enclosure(s). When a project requires more than one padlock, key the padlocks alike.

529.3.06 Quality Acceptance

Materials and workmanship shall meet the requirements of the Plans and these Specifications and shall comply

with the National Electrical Code.

The Work shall be inspected by the Department, the utility company involved, and the U.S. Coast Guard. The

navigation lighting system shall be approved by both the Department and the U.S. Coast Guard.

If the Coast Guard fails to make its inspection within 30 days, the Department and the utility company will make

the final inspection of the navigation lighting system. The Contractor will be relieved of any further responsibility for

the system after Department acceptance.

Final acceptance of the navigation lighting system will be withheld for a testing period of 30 days. The testing will

consist of continuous, nightly, automatic operation after the Contractor completes the lighting work or until all

other items in the Contract (except grassing) have been accepted, whichever occurs later. Assume the cost of the

electrical energy consumed during the testing period.

Correct any defects in materials or workmanship that occur during the testing period at the Contractor’s expense.

Any portion of the testing period (Subsection 529.3.06.B, Testing Acceptance of the Navigation Lighting System)

that occurs after final acceptance of the other Work will not be charged against the Contract Time.

529.3.07 Contractor Warranty and Maintenance

General Provisions 101 through 150.

529.4Measurement

Each navigation lighting system completed and accepted at the location specified will be measured for payment on a

lump sum basis. See Subsection 529.1, General Description.)

529.4.01 Limits

General Provisions 101 through 150. 831831831831831831

529.5Payment

Each navigation lighting system completed and accepted at the location specified will be paid for at the Lump Sum

Price bid for each system. This payment shall be full compensation for furnishing and installing materials and for labor,

equipment, and incidentals necessary to complete the Item.

Payment will be made under:

Item No. 529 Navigation lighting, bridge no._____ Per lump sum

529.5.01 Adjustments

General Provisions 101 through 150.. 832 832 832 832 832 832