Arlington County Lighting Specifications - 2020.pdf

2020 Lighting Specifications

This document contains the specifications for construction and maintenance of lighting within Arlington County. The 2020 version of the specifications replaces any previous revisions and versions.

Arlington County Department of Environmental Services ii

List of Document Revisions

Revision Date Description Section(s) Impacted

1 Sept 2020 Added requirement for project teams/contractors to provide stakeout documentation to

Transportation Engineering and Operations’ streetlighting construction inspectors.

14010

2 Sept 2020 For high-density polyethylene (HDPE) conduit, eiher the Schedule 80 or SDR 11 rated conduits can be used as determined on the plan set or as directed by the County representative

14030

3 Sept 2020 The conductor inside the conduit run shall be

XHHW-2

There will be five conductors with two circuits

(A & B), two neutral, and one ground.

The Contractor shall install 4' slack of alternate circuit conductor in the base of poles where there is no junction box present between alternate poles.

Where dual luminaires are installed on a pole, two sets of cables (one for each luminaire) shall be run to the luminaire from the pole base.

14050

4 Sept 2020 Added two options of shallow depth foundations for roadway (e.g. cobra or teardrop) light poles

14060

5 Sept 2020 Light pole drawing numbers are changed 14080

6 Sept 2020 Streetlight communication device commissioning process

14111

Content will appear highlighted in grey to mark changes that occur in the latest revision.

Revisions from past updates will not appear shaded.

Arlington County Department of Environmental Services iii

Table of Contents

Section 14010: General

1 Description

2 Applicability of the Specifications

3 Reference Documents

4 Standard Lighting Equipment

5 Standard Lighting Equipment Definition

6 Installer Certification

7 Lead Worker / Supervisor

8 Roadway Work and Permit

9 Photometric and Lighting Plan Requirement

10 Public Outreach Process

11 Dominion Energy Work Order Request

12 Lighting Inspection

13 Equipment Salvage

14 Utilities

15 Job Site Conditions

16 Required Submittals for Construction

Section 14030: Lighting Conduit

1 County Standards

2 Materials

3 Execution

4 Measurement and Payment

Section 14040: Junction Boxes

1 County Standards

2 Materials

3 Execution

4 Measurement and Payment

Section 14050: Lighting Conductors

1 County Standards

2 Materials

3 Execution

4 Measurement and Payment

Section 14060: Foundations

1 County Standards

2 General

3 Materials

4 Execution

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5 Measurement and Payment

Section 14070: Light Pole Base

1 County Standards

2 General

3 Materials

4 Execution

5 Measurement and Payment

Section 14080: Light Poles

1 County Standards

2 General

3 Materials

4 Execution

5 Measurement and Payment

Section 14090: Luminaire Arms

1 County Standards

2 General

3 Materials

4 Execution

5 Measurement and Payment

Section 14100: Electrical Service

1 County Standards

2 Materials

3 Execution

4 Measurement and Payment

Section 14110: Luminaire

1 County Standards

2 General

3 Materials

4 Execution

5 Measurement and Payment

Section 14111: Luminaire Communication Devices

1 General

2 Materials

3 Execution

4 Measurement and Payment

Section 14112: Typical Light Pole / Luminaire Combinations

1 County Standards

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2 General

3 Execution

4 Measurement and Payment

Section 14120: Pole Decals

1 County Standards

2 General

3 Material

4 Installation Procedure

Section 14130: As-Built Drawing

1 County Standards

2 Execution

5 Measurement and Payment

Section 14140: Streetlight Design Guidelines

1 County Standards

2 General

3 Design Requirements

4 Minimum Acceptance Criteria

5 Lighting Layout

6 Streetlight / Tree Interaction

7 Temporary Street Lighting and Use of Existing Streetlights as Temporary Streetlights

8 Light Energizing Procedure

List of Tables

Table 1 - Construction Inspection Checklist

Table 2 - Transformer Base Sizes

Table 3 – Plastic Transformer Base Cover Sizes

Table 4 - Aluminum Transformer Base Cover Sizes

Table 5 - Decorative Post-top Luminaire Features

Table 6 - Cobra Luminaire Features

Table 7 - Teardrop Luminaire Features

Table 8 - Wallpack/Floodlight Luminaire Features

Table 9 - Recommended Lighting Level Values for Roadways

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Acronyms and Abbreviations

Hz Hertz

V Volt

VAC Volts Alternating Current

W Watt

AASHTO American Association of State Highway and Transportation Officials

AC Alternating Current

ANSI American National Standards Institute

ASTM ASTM International

AWG American Wire Gauge

County Arlington County, VA

EIA Electronic Industries Alliance

IES Illuminating Engineering Society

IMSA International Municipal Signal Association

LED Lght-emitting Diode

NEC National Electrical Code

NEMA National Electrical Manufacturers Association

PVC polyvinyl chloride

USE Underground Service Entrance

UL Underwriters Laboratories

VDOT Virginia Department of Transportation

SMP Streetlight Management Plan

Arlington County Department of Environmental Services 1

Section 14010: General

1 Description

This document contains the specifications for lights and related equipment for projects in

Arlington County, VA (County). These include, but are not limited to the following: LED luminaires, underpass luminaires, conduit, boxes, service control equipment cabinets, switches, circuit breakers, contractors, time switches, distribution panels, wire and cable, transformers, lamps, plugs and receptacles. These specifications include the material specifications, equipment, work procedures, and measurement and payment.

2 Applicability of the Specifications

All the lights and related equipment owned by the County shall follow the specifications detailed herein including but not limited to material specifications, equipment, work procedures, and measurement and payment. All work and materials not specifically addressed by the County specifications shall follow VDOT Road and Bridge Standards and Specifications, latest edition unless specifically directed otherwise.

This document also recognizes Dominion Energy (DE) products as standard lighting product as detailed in the Number 4 of this Section, but the Contractor shall follow DE’s specification for equipment and installation methods.

3 Reference Documents

(a) All equipment and material shall conform to the standards of the following:

1. Arlington County Streetlight Management Plan (SMP)

2. Illuminating Engineering Society (IES) and American National Standards

Institute (ANSI) document RP-8-14

3. International Municipal Signal Association (IMSA)

4. 2016 Road and Bridge Specifications, Virginia Department of

Transportation (VDOT)

5. Virginia Professional Excavator’s Manual, April 2014

6. American Association of State Highway and Transportation Officials

(AASHTO) Standard Specifications for Structural Supports for Highway

Signs, Luminaires, and Traffic Signals, latest edition

7. VDOT Instructional and Informational Memorandum, Structure and Bridge

Division (IIM-S&B)-90.2, VDOT Guidelines to AASHTO Standard

Specifications for Structural Supports for Highway Signs, Luminaires, and

Traffic Signals, 6th Edition, 2013 with 2015 interims

8. 2009 Manual on Uniform Traffic Control Devices (MUTCD), Federal

Highway Administration

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9. American Welding Society (AWS) D1.1, Structural Welding Code

(b) In addition to the requirements of the above specifications, the plans, standard details, special contract provisions, and all material and work shall conform to the requirements in the following:

1. Virginia Supplement to the 2009 Manual on Uniform Traffic Control

Devices for Streets and Highways (MUTCD), Revision 1

2. National Fire Protection Association (NFPA) 70, National Electrical Code

(NEC)

3. Institute of Electrical and Electronics Engineers (IEEE) C2-2017, National

Electrical Safety Code (NESC)

4. Rules for Overhead Electrical Line Construction of the Virginia Public

Utilities Commission (Rules)

5. Standards of the American Society for Testing and Materials (ASTM)

International (ASTM)

6. Standards of the American National Standards Institute (ANSI)

7. Arlington County Department of Environmental Services Construction

Standards and Specifications

8. Arlington County Traffic Signal and Streetlight Standards and

Specifications

9. National Electrical Manufacturers Association (NEMA), Standards

Publication No. TS2-2003

10. ANSI/IEEE C.62.41, IEEE Recommended Practice on Characterization of

Surges in Low-Voltage (1000V and Less) AC Power Circuits

11. Applicable local ordinances

12. Underwriters Laboratories (UL) Standards

Wherever reference is made in this document or in the special contract provisions to any of the rules and standards listed above, the reference shall be construed to be to the document that is in effect at the date of bidding.

4 Standard Lighting Equipment

The County Standard Lighting equipment are defined as any equipment detailed in this document and Arlington County Lighting Standards. In addition to these two documents, streetlight equipment shown in the Dominion Energy (DE)

(https://www.dominionenergy.com/home-and-small-business/outdoor-lighting)

(https://www.dominionenergy.com/large-business/outdoor-lighting search “Outdoor

Lighting in the webpage) will also be treated as the County standard streetlight. There are multiple streetlight equipment options shown in these three documents that are approved https://www.dominionenergy.com/home-and-small-business/outdoor-lighting https://www.dominionenergy.com/large-business/outdoor-lighting

Arlington County Department of Environmental Services 3 for particular location or application. It will be a responsibility of the Designer and the

Contractor to coordinate early in the process to identify the approved equipment for the specific project location and application. On certain specific projects, County streetlight engineer may approve additional streetlight equipment.

5 Standard Lighting Equipment Definition

The County Standard Lighting equipment for the purpose of this document will be defined in three major categories; roadway light, streetlight, and wallpack. The roadway lights are light fixtures installed on poles with mounting height of 25’ or higher. Streetlights are light fixtures installed on post-top poles with mounting height 16’ or less.

6 Installer Certification

The Contractor(s) shall have lighting technicians who have obtained an IMSA Roadway

Lighting Technician Level I Certification.

Technicians shall be able to perform all work on the project site including but not limited to the following:

(a) All streetlight-related electrical wiring terminations and splices, including but not limited to grounding, and service entrances

(b) Disconnect and meter box

(c) Testing and review of all operational electrical equipment

(d) Streetlight assembly

(e) Troubleshooting streetlights

(f) Conduit installation

(g) Pole foundation installation and pole setting

(h) Junction box installation

(i) Conductors pulling and installation

7 Lead Worker / Supervisor

A Lead Worker / Foreman shall be assigned to each project. This individual is required to have at least 5 years of experience in lighting construction and installation.

8 Roadway Work and Permit

Unless stated otherwise, all roadway and sidewalk work shall be in accordance with the latest version of the Virginia Road and Bridge Standards and Specifications. If the VDOT and County specifications conflict, the Contractor shall notify the County Engineer.

For all work, the CONTRACTOR shall obtain PROW & TROW permits from the Arlington

County. No separate electrical permit will be required for streetlighting work with the

County Public ROW.

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9 Photometric and Lighting Plan Requirement

Prior to beginning of new lighting construction, the Contractor shall obtain approved lighting plan. This requirement is equally applicable for temporary as well as permanent lighting plan. If some conflicts arise such that the lights cannot be installed as shown in the plan, the Contractor is responsible for coordinating with the lighting construction manager of the project.

10 Public Outreach Process

The Contractor is responsible for coordinating with County’s designated staff for public outreach effort.

11 Dominion Energy Work Order Request

(a) Project shall be responsible all the coordination with Dominion Energy after the work request is created.

(b) Any charges by Dominion Energy including but not limited to pole or meter installation will paid for by the project.

12 Lighting Inspection

The Contractor shall notify the County lighting construction manager before commencing lighting related works.The Contractor shall coordinate their Dominion Energy work requests with the County Construction Manager.

The lighting inspection process will be carried out as follows:

For County-Owned Lighting Systems:

(a) Pre-construction meeting shall be held with the lighting construction manager, and electrical contractor.

(b) County streetlight construction manager will inspect the work in three different phases for the lights owned by the County:

(i) Rough-in (all foundations inspected before pouring and conduit inspected before back-filling).

(ii) Meter pedestal.

(iii) Final inspection after energization (pole setting, wiring, meter pedestal and lighting controls, luminaire mounting).

(c) The table below shows the summary of the inspection items:

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Table 1 - Construction Inspection Checklist

No. Rough-In Comments

Location - Pole, junction box and meter pedestal location (project team/contractor to provide documentation)

Conduit - 2” SCH 40 PVC in open trench or HDPE

Schedule 80 (SDR 11) for directional boring

3 Juction Box – Large or Small as shown in the plan

Pole foundation - Depth, diameter, distance from trees and curb, conduit, size and number of rebars, ground wire, ground rod, clamp, anchor bolt size and hole pattern.

Note: If depth of foundation is not possible as per the approved drawing, stop and consult with county lighting construction manager for alternate design.

No. Meter Pedestal Comments

Meter pedestal - Location, number and size of breakers, ground rods, bell ends, alternating circuits, labelling of the service panel and ohms test.

2 Contactor box - Photocell and HOA switch.

No. Final Comments

Poles - Height, wiring, no phasing or pigtail, ground lug, terminate all ground wires at the ground lug, 10-amp fuse, bell ends.

2 Luminaires - Wiring, CityTouch node and its commissioning, doors opening towards the street, through bolts for dual arms.

3 “As-Built” Drawings Submission

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For Dominion Energy Owned Lighting Systems:

(a) County lighting construction manager will inspect pole location and type, type of fixture, and wattage.

13 Equipment Salvage

(a) All lighting equipment that is removed shall remain the property of the County. Such property is to be removed from the work site, tagged with date removed and location, and returned by the Contractor. At the County Project Manager’s discretion, the

Contractor may be directed to dispose of the materials in lieu of salvage.

(b) Streetlight luminaires are equipped with smart communication device that are specific to a location. When luminaires are removed, all components shall be marked with the pole number before delivering to the County.

(c) Any equipment shall be returned in the same condition as removed. Contact the

Warehouse Coordinator to coordinate delivery.

14 Utilities

(a) The utilities shown on the plans are based on records and surface field indications.

All utility locations require field verification in cooperation with the affected utility companies and public agencies.

(b) The Contractor shall follow the guidelines and procedures set forth in the Virginia

Professional Excavator’s Manual and is responsible for locating utility-related equipment such as gas and electric, and sewer laterals, valve boxes, and manholes and for ensuring that the equipment is properly protected and that signal equipment locations are adjusted accordingly with approval from the County Engineer.

(c) Miss Utility does not locate private utility laterals. The Contractor is responsible for locating and marking private utilities in the work area or right-of-way prior to excavation. The Contractor is responsible for repairing any damage to private utilities that occurs as a result of construction at no additional cost to the owner.

15 Job Site Conditions

The Contractor shall maintain a safe and clean job site throughout construction. Upon project completion, the job site shall be neat and clean with all trash and dirt picked up and barricades removed. Landscaping shall be restored and sidewalks swept as needed.

The job site shall be left in as good or better condition than it was before construction.

16 Required Submittals for Construction

Prior to beginning construction related activities, the Contractor shall provide submittals for all streetlight and radio communication equipment and poles.

Arlington County Department of Environmental Services 7

The submittals shall detail the products intended for installation and their conformance with VDOT and County specifications. Product compliance with required ASTM, ANSI, NEC, IMSA and other technical specifications shall be outlined on the submittals.

At a minimum, the Contractor is required to provide shop drawings and/or product submittals for:

(a) Conduits (Refer to AC streetlight specification section 14030)

(b) Junction boxes (Refer to AC streetlight specification section 14040)

(c) Conductors & Wiring Appurtances (Refer to AC streetlight specification section

14050)

(d) Poles and Arms (including caps and bases) (Refer to AC streetlight specification section 14080 and 14090)

(e) Light fixtures or Luminaires

1. Engine

2. Globes or housing

3. Shorting Caps

4. Photocells/Communication Devices

(f) Equipment

1. Transformer bases and covers (refer to section 14070)

2. Inline Fuse Holders and Fuses (refer to section 14050, 14080, and 14100)

(g) Electrical Service (refer to section 14100)

1. Meter Pedestal

2. Central photocell

3. HOA Enclosure

4. Meter Box

5. Circuit Breakers

6. Contactor

(h) Pole Decals (refer to section 14120)

Arlington County Department of Environmental Services 8

Section 14030: Lighting Conduit

1 County Standards

The detail drawings in the Arlington County Lighting Standards that are applicable to lighting conduit is as follows:

(a) 14030-01 Lighting Conduit Installation

2 Materials

(a) Polyvinyl chloride (PVC) conduit shall be schedule 40, or high-density polyethylene

(HDPE) Schedule 80 (or SDR 11) as determined on the plan set or as directed by the

County representative. All couplings, elbows, bushings, and other conduit fittings shall be of the same quality, strength, and grade of workmanship as the conduit, shall be manufactured expressly for use with the conduit and shall conform to the requirements of the National Electric Code and UL.

(b) Steel conduit and fittings shall be galvanized and heavy wall and shall meet ANSI

C80.1, American National Standard for Electrical Rigid Steel Conduit, and UL 6, Electrical Rigid Metal Conduit – Steel. All couplings, elbows, bushings, and other conduit fittings shall be of the same quality, strength, and grade of workmanship as the conduit and shall be manufactured expressly for use with the conduit.

3 Execution

(a) General Conduit Installation

1. PVC will be installed in open trenches and HDPE will be installed in direction boring application.

2. Where multiple conduits are installed in a single trench the conduits shall be separated by 1 inch of sand or with prefabricated conduit spacing units.

3. Change in direction of conduit shall be accomplished by the use of standard elbows or field bends. Conduit shall be bent without crimping or flattening and shall have a radius of not less than ten (10) times the inside diameter of the conduit. All bends shall meet the requirements of NEC

Article 346 for rigid metallic conduit and NEC Article 347 for rigid non-metallic conduit.

4. There shall not be more than the equivalent of four quarter bends (360 degrees total) between pull points, e.g., conduit bodies and boxes.

5. Steel conduits shall be cut with a roller cutter. Cutting conduits with a hand or power saw shall not be acceptable.

6. The ends of the conduit shall be reamed to remove burrs and rough edges. Cuts shall be made square and true so that the ends will butt or come together for the full circumference thereof.

Arlington County Department of Environmental Services 9

7. All couplings shall be tightened until the ends of the conduits are brought together, providing a good electrical connection throughout the entire length of the conduit run. All conduit connections shall be finished with threaded ends.

8. When conduit is cut and threaded corrosion protection shall be applied to the newly cut threads and ream area. Prior to applying any coating, the

Contractor shall ream and thoroughly clean the thread area with a degreaser spray to remove all cutting oil and metal chips. After the threads are clean and dry, a coating of cold galvanizing compound, or a zinc rich galvanizing compound (similar to Rustoleum "Hard Hat" or CRC Instant

Cold Galvanize), shall be applied to both the threads and ream area.

9. All conduits terminating in a junction box, pole base, or controller cabinet shall be threaded and shall be furnished and installed with grounding bushing. These grounding bushings shall be bonded together with grounding wire. Where non-metallic conduit is used, conduit ends shall have protective end bushings installed.

10. Conduit risers shall be rigid metallic conduit and attached using conduit clamps. A rain tight entrance cap with plastic wire entry knockouts shall be installed at the top of each riser. The rigid metallic conduit riser shall extend a minimum of 18” into the ground and shall be continuous to the junction box or foundation.

11. A one-quarter inch (1/4”) nylon pull line or mule tape as directed by the

County streetlight inspector with a minimum tensile strength of 500-lbs.

shall be installed in all conduits. At least two feet (2’) of pull line shall be extended beyond each end of the conduit run and secured.

12. Concrete Encased PVC Conduit for road crossing shall have a minimum of three inches of concrete on top, bottom and sides of the conduit with one and a half inches of spacing between conduits.

13. All underground conduit runs shall have a tracer wire (14 AWG stranded thermoplastic high-heat-resistant nylon-coated [THHN]) installed between each termination point. Multiple conduit runs in the same trench shall have tracer wire in at least one conduit.

14. All conduits shall terminate in junction boxes such that when cable is pulled and coiled within the junction box there is a minimum clearance of 3 inches between the junction box lid and the conduit and cable. Cable and conduit shall not be crushed or damaged.

15. The ends of all metal conduits, existing or new, shall be well reamed to remove burrs and rough edges. Field cuts of existing or new conduit shall be made square and true, and the ends shall butt together for the full

Arlington County Department of Environmental Services 10 circumference of the conduit. Slip joints or running threads will not be permitted for coupling metal conduit. When a standard coupling cannot be used, an approved threaded union coupling shall be used. All couplings shall be screwed tight until the ends of the metal conduits are brought together.

16. Where a “stub out” is called for on the plans, a sweeping elbow shall be installed in the direction indicated and sealed with a metallic cap to facilitate locating. The locations of all conduit ends in structures or terminating at curbs shall be marked by a “Y” at least 3 inches high cut into the face of the curb, gutter, or wall directly above the conduit.

17. Where factory bends are not used, conduit shall be bent without crimping or flattening, using the longest radius practicable. Conduit bends feeding junction boxes and foundations shall be as shown on the standard details, typically 18 inches.

18. Conduits shall always enter a pedestal base, junction box, or any other type structure from the direction of the run only. Conduit connections at junction boxes shall be tightly secured.

19. All conduits in junction boxes shall extend a minimum of 2 inches above crushed rock.

20. Existing underground conduit to be incorporated into a new system shall be cleared with a mandrel or blown out with compressed air. Clearing conduit shall include but not limited to removal of water, dirt and debris such at allow free passage of conductors.

21. Location of new conduit runs shown on the plans are for bidding purposes only and may be changed at the direction of the Engineer.

22. All conduit installed, including HDPE pipe, shall be at full depth for the entire conduit run. Ninety-degree sweeps shall not be cut to achieve proper entrance to the junction box. Conduit runs shall have no more than a 180-degree bend.

(b) Trenching

1. Unless otherwise shown or approved by the Engineer or authorized representative, conduit shall be placed at a minimum depth of 24 inches and a maximum depth of 36 inches within Arlington County right-of-ways.

Within VDOT right-of-ways, in accordance with VDOT regulations, all conduits shall be buried with a minimum of 36 inches of cover.

2. All trenching shall conform to Arlington County, Construction

Specifications and Standards (https://arlingtonva.s3.dualstack.us-east-

1.amazonaws.com/wp-content/uploads/sites/21/2013/12/Construction-https://arlingtonva.s3.dualstack.us-east-1.amazonaws.com/wp-content/uploads/sites/21/2013/12/Construction-Specifications-9-30-13.pdf https://arlingtonva.s3.dualstack.us-east-1.amazonaws.com/wp-content/uploads/sites/21/2013/12/Construction-Specifications-9-30-13.pdf

Arlington County Department of Environmental Services 11

Specifications-9-30-13.pdf) Section 02200, Earthwork for Structures and

Pipelines and Section 02650, Restoration of Roadway.

3. Trenches shall be free of cinders, broken concrete, or other hard abrasive materials prior to conduit placement.

4. The Contractor shall take measures to preserve the existing landscaping.

When trenching in earth the Contractor shall carefully remove the existing sod and then place the existing sod back into place when the work is complete. The Contractor shall place all earth that has been dug up on a plastic sheet to protect the existing landscaping.

5. The Contractor shall completely secure the trench at the end of every working day. The securing can be done by either backfilling or with the use of steel plates.

6. Test holes shall be dug in asphalt paving per the Virginia Professional

Excavator’s Manual and Miss Utility guidelines for test pits. Restoration shall follow VDOT requirements where applicable.

(c) Boring

1. The Contractor shall be required to dig test pits where new conduit crosses underground utilities, as specified on the plans or as directed by the Engineer, to ensure that adequate utility clearances are met.

2. Bored conduits shall adhere to the same depth requirements as trenched conduits and shall adhere to appropriate clearances from utilities.

3. Boring under the sidewalk/street shall involve boring runs from 30 to

100 feet (typical) or more in length. The Contractor may use the directional bore method instead of trenching and backfilling. Boring may be under asphalt paving, concrete sidewalk, or grass.

(d) Conduits on wall surface

1. The Contractor shall be required to run conduits on wall (horizontal or vertical) surfaces such as in including but not limited to, retaining walls, tunnels, bridge abutments, as specified on the plans or as directed by the

Engineer, or authorized representative.

2. The Contractor will be responsible for the labor and material to secure conduits to the aforementioned surfaces with the means and methods approved by the Engineer, or authorized representative.

4 Measurement and Payment

(a) Furnish and Install Steel Riser for Wooden Poles shall be measured and paid for on a linear-foot basis. Installation shall include steel riser conduit, fittings, hardware, all mounting hardware, weather protection, staples to secure conduit.

https://arlingtonva.s3.dualstack.us-east-1.amazonaws.com/wp-content/uploads/sites/21/2013/12/Construction-Specifications-9-30-13.pdf

Arlington County Department of Environmental Services 12

(b) Furnish and Install Conduit on Wall Surfaces shall be measured and paid for on a linear-foot basis. Installation shall include conduit, fittings, hardware and other equipment necessary for the installation and securing the conduits to those surfaces.

(c) Furnish and Install Direct Bore Conduit shall be measured and paid for on a linear-foot basis. Installation shall include conduit, fittings, pull ropes.

(d) Furnish and Install Conduit in Trench shall be measured and paid for on a linear-foot basis. Installation shall include the cost of excavating the trench, installing conduit, fittings, and pull ropes, bedding and backfill, and restoration. The cost of trenching shall not be impacted by the means of installation. For example, hand digging and mechanical excavation shall be at the Contractor’s discretion and shall not impact the price.

(e) Furnish and Install Lighting Ductbank shall be measured and paid for on a linear-foot basis. Installation shall include trenching, conduits, fittings, pull ropes, connection and materials needed connect to junction boxes or adjacent conduits.

Any concrete encasing shall be incidental to the cost of installing road-crossing conduit.

(f) Test Pit shall be measured and paid for per each. The cost of restoration shall be incidental to this item.

(g) The cost of restoration shall be included in the unit costs for all items in this section.

Restoration shall include, but shall not be limited to, concrete work, asphalt repair, pavers, and sod. Replacement of concrete and asphalt due to boring or trenching shall be incidental to the cost of installing the conduit.

1. Restoration in asphalt areas shall include perimeter seal where required by VDOT.

2. Concrete panels shall be removed to the nearest control joint and replaced. No concrete patching will be allowed.

3. Restoration of paver areas shall include grouted or sand based pavers as needed.

(h) Clear Existing Conduit shall be measured and paid for on a linear-foot basis.

(i) Remove Conduit shall be measured and paid for on a linear-foot basis and shall include removing conduits, fitting, pull tapes.

Arlington County Department of Environmental Services 13

Section 14040: Junction Boxes

1 County Standards

The detail drawings in the Arlington County Lighting Standards that are applicable to junction boxes are as follows:

(a) 14040-01 Small Junction Box

(b) 14040-02 Large Junction Box

2 Materials

(a) Small junction boxes shall be 12”X12” Quazite PC1212HA00 (lid) and PC1212BA12

(box), or approved equal typically installed in residential areas.

(b) Large junction boxes shall be 13”X24” Quazite PT1324HA00 (lid) and PT1324BA18

(box), or approved equal typically installed in commercial areas.

(c) Wallmount junction boxes shall be 10”X8”X4” Stahlin J1008HW, or approved equal.

(d) All the lids for in-ground junction boxes shall be non-skid and shall be marked

“STREETLIGHT”.

3 Execution

(a) Execution shall consist of providing the specified box, any required excavation to install the box, installing required conduits into the box, and patching conduit entrance holes per County Standards.

(b) Junction boxes shall be placed at a maximum spacing of 300’. A junction box shall be provided at each turn more than 30 degrees and each roadway crossing.

(c) All conduits entering a junction box shall enter the box from the bottom using a sweep.

(d) Conduits shall enter the bottom of junction box at the depth of the conduit run and extend a minimum of 2 inches and a maximum of 3 inches into the structure. All conduits in junction boxes shall extend a minimum of 2 inches above the aggregate.

(e) All junction boxes shall be set on a drainage course with a minimum of depth of

12 inches. The gravel shall extend a minimum of 6” laterally beyond the footprint of the box per the standard details.

(f) The top of the junction box shall be installed flush with the grade unless otherwise specified on the plans.

(g) Removing a junction box shall include removing the junction box, capping or removing conduits, and final restoration.

Arlington County Department of Environmental Services 14

(h) Adjusting a junction box to grade shall include excavating around the existing box, re-setting the existing box, re-working conduits, and compacting around the box as needed.

4 Measurement and Payment

(a) Furnish Junction Box shall be measured and paid for per each. The price for a junction box shall include the box, and any hardware required for installation.

(b) Furnish Junction Box Lid shall be measured and paid for on a per-unit basis and shall include all bolts and necessary hardware required for installation.

(c) Install Junction Box shall be measured and paid for per each. All materials associated with junction box installation, including lid, gravel base, shall be incidental. Restoration of damaged grass, pavers, concrete, asphalt, or other areas shall be incidental.

(d) Furnish and Install Wallmount Junction Box and Cover shall be measured and paid for on a per-unit basis and shall include all necessary hardware required for installation including cover, securing to the wall surface.

(e) Install Junction Box Lid shall be measured and paid for per each.

(f) Enter Existing Junction Box shall be measured and paid for per each. Payment for entry into junction boxes shall be the same regardless of the type of junction box entered or the number of conduits connected. Restoration of damaged grass, pavers, concrete, asphalt, or other areas shall be incidental.

(g) Remove Junction Box shall be measured and paid for per each. The disposal of the box shall be incidental to the item. Restoration of damaged grass, pavers, concrete, asphalt, or other areas shall be incidental.

(h) Adjust Existing Junction Box to Grade shall be measured and paid for per each.

Payment for adjustment of junction boxes shall be the same regardless of the type of junction box adjusted or the number of conduits within the box. Restoration of damaged grass, pavers, concrete, asphalt, or other areas shall be incidental.

Arlington County Department of Environmental Services 15

Section 14050: Lighting Conductors

1 County Standards

The detail drawings in the Arlington County Lighting Standards that are applicable to light pole wiring is as follows:

(a) 14050-01 Light Pole Wiring Detail

2 Materials

(a) Unless required by the voltage drop calculation, lighting conductors from the service disconnects (load side) to the base of each light pole shall be minimum gage of #6 copper stranded XHHW-2 including grounding conductor.

(b) All wires inside of poles shall be #12/2c solid copper UF-B with ground wire. This type of cable shall be used between the terminal block of the luminaire and the splice at the pole base.

(c) Unless directed otherwise, all conductors shall be designed and installed for

120VAC. Wiring shall be done as per the designed voltage and no phasing tape will be allowed.

(d) There will be five conductors with two circuits (A & B), two neutral, and one ground.

The cable shall be colored as follows:

1. Circuit A Black

2. Circuit B Red

3. Neutral White

4. Ground Green

(e) The wiring for the luminaires shall be installed on the two alternating circuits. For example, sixteen (16) poles shall be installed as follows:

1. Luminaire Numbers 1, 3, 5, 7, 9, 11, 13 and 15 shall be installed on A circuit, and Luminaire Numbers 2, 4, 6, 8, 10, 12, 14 and 16 shall be installed on the B circuit and alternate circuit.

(f) All conductor splicing accessories shall be watertight and weatherproof.

3 Execution

(a) This work will involve providing and running conductors in conduits, inside junction boxes or existing poles and arms. The work will also include making necessary circuit connections to new conductors or existing conductors, securing terminals with weather proof splices.

(b) All conductors shall be installed in a neat and workmanlike manner, with care being taken that conductors are not kinked, scarred, or damaged during installation.

Arlington County Department of Environmental Services 16

(c) All branch circuit, load and service wires shall be color coded in accordance with

NEC and the COUNTY requirements.

(d) Conductors shall be installed with their slack length coiled in junction boxes. Five (5) feet of conductors shall be coiled inside the junction box. Additionally, the Contractor shall install 4' slack of alternate circuit conductor in the base of poles where there is no junction box present between alternate poles.

(e) Conductors shall be continuous and no splices shall be made except within junction boxes or pole bases.

(f) Conductors shall be pulled by hand and without aid of block and tackle or any other mechanical devices.

(g) Only approved pulling compounds such as powdered soapstone or talc, which will in no way damage the insulation on the conductors or hasten its aging may be used to facilitate the pulling of wire into conduit.

(h) Unless otherwise approved by the Engineer, wiring shall not occupy more than 40% of the inside area of throughout the conduit. The Contractor shall verify the existing conduit is less than 40% full prior to pulling new conductors through. If more than

40% of the inside area is occupied, the Contractor shall provide additional conduit to satisfy this requirement.

(i) The Contractor shall proof new conduits prior to pulling conductors to ensure the conductors can be pulled without damaging existing conductors.

(j) The Contractor shall replace pull ropes if used to install new cables in existing conduits. If no pull rope existed in the conduit, a new pull rope shall be installed.

(k) Conductors shall not be spliced within conduits. Wiring shall conform to the appropriate articles of the NEC wiring within junction boxes, and similar equipment and shall be neatly arranged.

(l) Each light pole shall be equipped with breakaway fuse holders containing a 10amp fuse. Fuse holder shall be Ferraz Shawmut model number FEB-11-11-BA

(http://www.ferrazfuses.com/cms_admin/fckeditor/editor/filemanager/connectors/php/ bin/Fuse%20BLK%20Cls%20CC%20Midget%20Fuse%20FEB-FEC-FEX-FEY.pdf) or approved equal and shall be installed only on the hot leg at the base of each pole.

(m) A continuous grounding conductor shall be installed for grounding purposes. Splicing of the grounding conductor shall not be permitted.

(n) There shall be two ground rods adjacent to the service equipment separated by six feet and connected with bare copper #6 conductor.

(o) For wiring light poles, the Contractor shall splice each conductor at the base of the pole and terminate the other end(s) of the cable(s) on the terminal block of the luminaire(s). The Contractor shall also make all necessary grounding connections.

Arlington County Department of Environmental Services 17

(p) Removal of lighting conductor in conduit shall consist of removing and disposing of the conductors in an existing conduit.

4 Measurement and Payment

(a) Furnish Conductor shall be measured and paid for on a linear foot basis.

(b) Install Conductor will be measured and paid for on a linear foot basis. Several conductors pulled into a single conduit at the shall be measured by the length of the pull rather than the total length of the conductors installed. Cost for pulling conductors shall include all connectors, splice enclosures, or other appurtenances required for making the electrical connections.

1. The cost of installing or replacing pull rope shall be incidental to the cost of pulling conductor.

(c) Install Conductor in Light Pole shall be measured and paid for per each. The price shall include 2 sets of cables for two luminaires and the price shall apply to either a streetlight or a roadway light. The fuse and fuse holder, splice enclosure, and any other required electrical appurtenances required to make the electrical connections shall be incidental.

(d) Remove Conductor shall be measured and paid for on a linear foot basis. Several conductors removed from a single conduit, arm, or pole shall be considered a single item.

Arlington County Department of Environmental Services 18

Section 14060: Foundations

1 County Standards

The standards in Arlington County Lighting Standard that are applicable to foundations are as follows:

(a) 14060-01 Streetlight Pole Foundation Standard Depth

(b) 14060-02 Streetlight Pole Foundation Shallow Depth

(c) 14060-03 Roadway Light Pole Foundation

(d) 14060-04 Roadway Light Pole Foundation Shallow Depth - Option 1

(e) 14060-05 Roadway Light Pole Foundation Shallow Depth - Option 2

2 General

(a) Foundations for streetlight poles shall be poured in accordance with the drawings in the Arlington County Construction Standards & Specifications and Arlington Virginia

Department of Environmental Services Streetlight Specifications unless otherwise specified by the Engineer.

(b) Specifications for streetlight pole foundations shall follow 14060-01 through 14060-04 of the County’s streetlight specification unless directed otherwise by the County’s authorized representative prior to the construction.

3 Materials

(a) Concrete shall be mixed and poured in in-site accordance with Section 03100 of the

Arlington County Construction Standards & Specifications

(https://arlingtonva.s3.dualstack.us-east-1.amazonaws.com/wp-content/uploads/sites/21/2013/12/Construction-Specifications-9-30-13.pdf)

(b) Concrete shall be of Class A3 air entrained General Use with 3,000 PSI unless otherwise noted.

(c) The reinforcement bars shall at least meet ASTM A65 GR. 10.

4 Execution

(a) Foundation demolition shall consist of the demolition of light pole foundation to a 12” depth below the finished grade. Demolition shall include breaking out concrete and removing anchor bolts, conduits, conductors, and reinforcing steel, if any. Any conduit runs associated with a demolished foundation shall be capped or abandoned as called for on the design plans.

https://arlingtonva.s3.dualstack.us-east-1.amazonaws.com/wp-content/uploads/sites/21/2013/12/Construction-Specifications-9-30-13.pdf https://arlingtonva.s3.dualstack.us-east-1.amazonaws.com/wp-content/uploads/sites/21/2013/12/Construction-Specifications-9-30-13.pdf

Arlington County Department of Environmental Services 19

(b) Foundation removal shall include removal of the entire foundation, removing anchor bolts, conduits, conductors, and reinforcing steel, if any. Any conduit runs associated with a removed foundation shall be capped or abandoned as called for on the design plans.

(c) Light pole foundations shall have up to two (2) 2” and one (1) 1" PVC conduit.

(d) Pole foundations shall be poured in forms such as Sonotube, or approved equal.

Such forms shall be used for the entire depth of the foundation for STREETLIGHTS.

Forms shall be rigid and must be securely braced in place and inspected before the concrete is poured. Conduit ends and anchor bolts shall be placed in proper position and in a template until the concrete sets.

(e) Test holes shall be dug in asphalt paving per the Virginia Professional Excavator’s

Manual and Miss Utility guidelines for test pits.

(f) Forms shall be true to line and grade. Tops of foundations shall be 1” above finished grade, smooth, brushed and chamfered. The Contractor is responsible for coordinating on any adjacent project to confirm correct final grades.

(g) The Contractor shall contact the County for the inspection of forms and reinforcing cage prior to pouring concrete. Stirrups shall be installed on all foundations.

(h) Anchor bolts shall conform to the manufacturer’s specifications. Shims or other similar devices for plumbing or raking will be permitted. Stirrups shall be installed on all foundations.

(i) Whenever excavation for a foundation requires removal of excess ground material, the excavation shall be backfilled to within 12 inches of ground level with the same type of concrete that is used for the foundation.

(j) All foundations shall be hand floated until the top is smooth and level.

(k) Pole foundations shall be poured against undisturbed earth. Cast-in-place foundations shall be poured monolithically.

(l) The Contractor shall not leave foundation holes uncovered or unprotected. The

Contractor is responsible for ensuring pedestrian safety throughout the installation of the foundation.

(m) A 5/8-inch copper-clad grounding rod shall be installed outside the foundation. The contact length shall be per NEC Article 250. Generally, the ground rod shall be below moisture level with minimum soil contact of 8’, or 45 degree angle, or laid 30” deep horizontally.

(n) The grounding conductor attached to the rebar cage and the ground rod shall be #6 bare copper. The grounding conductor shall be connected using clamp Arlington

Industries, Inc catalog number 719DB, or approved equal.

Arlington County Department of Environmental Services 20

(o) The Contractor shall notify the County immediately upon encountering unusual or unsuitable sufbsurface conditions.

5 Measurement and Payment

(a) Install Foundation shall be measured and paid for per each foundation shall include concrete, reinforcing steel, stub-outs, anchor bolts, bolt circle templates, ground rods, grounding equipment, conduits, excavating, backfilling, compacting, disposing of surplus and unsuitable materials, and restoring existing areas.

1. All reinforcement shall be incidental to the pay item for which a foundation is required. Grounding rods shall be installed as indicated in the standard details and shall be incidental to the installation pay item.

2. If a foundation is installed to the incorrect grade, the Contractor shall remedy the error by removing the foundation and replacing the entire structure.

(b) Enter Existing Foundation shall be paid for at the unit price for each foundation entered, regardless of the number of conduits being installed.

(c) Install Anchor Bolts in Existing Foundation shall be paid for at the unit price for each anchor bolt installed.

(d) Demolition of Existing Foundation shall be measured and paid for at the contract unit price for each type of demolition.

(e) Removal of Existing Foundation shall be measured and paid for at the contract unit price for each type of demolition.

(f) In all items above, the cost of restoration shall be included in the unit costs.

Restoration includes, but is not limited to, concrete work, asphalt repair, pavers, and sod.

Arlington County Department of Environmental Services 21

Section 14070: Light Pole Base

The standards in Arlington County Lighting Standards that are applicable to light pole bases are as follows:

(a) 14070-01 Transformer Base

2 General

This section describes minimum acceptable design and installation standards for streetlight and transformer base.

(a) The composite clamshell base shall meet ANSI/NEMA (American National Standard

Institute/National Electrical Manufacturing Association) specification ANSI C136.20-

2012.

(b) The CONTRACTOR shall provide to Arlington County a written warranty against any defects in materials and workmanship for a period of one year from the time of delivery to the Arlington County. For warranty repairs, all costs of labor, parts and transportation to and from the CONTRACTOR shall be borne by the CONTRACTOR.

3 Materials

(a) Clamshell Base

(i) Clamshell bases shall only be installed for direct-buried decorative post-top composite streetlight pole.

(ii) The clamshell base shall be Washington style that is approximately 24” in height, and shall have a base diameter of 20” and closely resembles the base shown in the composite direct-buried pole drawing.

(iii) The clamshell base shall fit at the base of fluted 12 feet pole with top diameter of 4.5” and taper of 0.2” per foot.

(iv) The color of the poles will be specified in the order. There shall not be any difference in prices in color specified herein.

1. Bronze color will be Federal Standard 30108.

2. Black color will be Federal Standard 27038.

(b) Transformer Base

(i) Transformer base shall be as per ASTM B108 (356-T6).

(ii) Transformer base shall have the follow nominal dimension:

Arlington County Department of Environmental Services 22

Table 2 - Transformer Base Sizes

Height Bottom Bolt Circle Top Bolt Circle

17” 13” to 15” 10-1/2” to 13-1/2”

20” 13” to 15” 11” to 13”

(iii) Aluminum transformer base shall be hinged or anti-theft screwed door with stainless steel fastener specified in the order.

(iv) Color (as specified):

1. Aluminum transformer bases shall be galvanized and non-painted.

2. Black poles shall be powder coated in Federal Standard(595C) 27038

(c) Plastic Transformer Base Cover

(i) Plastic replacement doors for lighting pole bases shall be fabricated from tough hi-density UV inhibited plastic for impact resistance.

(ii) The plastic cover shall withstand temperature extremes of -78° to +150°

Fahrenheit.

(iii) Plastic transformer base cover shall be anti-theft screwed door with stainless steel fastener specified in the order.

Table 3 – Plastic Transformer Base Cover Sizes

Application Bottom Width Top Width Height

For 17” T-Base 9.75” 9.25” 11.75”

For 20” T-Base 9.75” 9.25” 13.50”

(iv) Color (as specified):

1. Silver poles shall be in Federal Standard(595C) 26440.

2. Black poles shall be powder coated in Federal Standard(595C) 27038

(d) Aluminum transformer base cover

(i) Transformer base cover shall be as per ASTM B108 (356-T6).

(ii) Aluminum transformer base cover shall be hinged or anti-theft door with stainless steel fastener specified in the order.

Table 4 - Aluminum Transformer Base Cover Sizes

Application Bottom Width Top Width Height

For 17” T-Base 9.75” 9.25” 11.75”

For 20” T-Base 9.75” 9.25” 13.50”

Arlington County Department of Environmental Services 23

(iii) Color (as specified):

1. Aluminum transformer base covers shall be galvanized and non-painted.

2. Black aluminum transformer bases shall be powder coated in Federal

Standard(595C) 27038

4 Execution

(a)…