13-12-005

Division 13-12-005
Street Light Equipment

Sections:

13-12-005-0002 Streetlight Support Structures

13-12-005-0003 Structure Finish Specifications

13-12-005-0004 Streetlight Equipment and Service Line Ownership

13-12-005-0001 Luminaire

Luminaire for street lighting shall be full cut-off fixtures meeting the following criteria for weight and effective projected area (EPA):

Table 13-12-005-01

Luminaire Weight and EPA Criteria
Luminaire Output (Maintained)	Maximum Weight Including Ballast, Slip-Fitter, Lamp and Photo Cell (Pounds)	Maximum EPA (Square Feet)
2000 Lumens	30	1.4
4000 Lumens	35	1.6
6000 Lumens	50	2.0
9000 Lumens	50	2.0

All new street lighting fixtures shall comply with the following LED luminaire requirements and the criteria in the City of Flagstaff specifications for light emitting diode (LED) luminaires, which are posted to the City web page at www.flagstaffaz.gov. The City Traffic Engineer will maintain and amend as needed the City of Flagstaff specifications for light emitting diode (LED) luminaires along with a list of acceptable luminaires. Luminaires that are not on this list will require submittal of technical information for review and approval by the City Traffic Engineer. In some special cases, higher output luminaires with corresponding mast arm and pole combinations may be desirable. These special cases will be reviewed by the City Traffic Engineer for approval.

A. General.

1. Each luminaire shall meet all parameters of these specifications and the City of Flagstaff specifications for light emitting diode (LED) luminaires throughout the minimum operational life when operated at an average nighttime temperature of seventy (70) degrees Fahrenheit.

2. Streetlights shall be fully shielded in such a manner that light emitted by the fixture, either directly from the lamp or indirectly from the luminaire, is projected below a horizontal plane. External shields or reflectors to prevent up-light are not allowed.

3. The mounting assembly shall permit any necessary adjustment to orient the luminaire with the roadway for proper light distribution.

4. Luminaire shall have a built-in leveling indicator inside the housing to allow for proper orientation.

5. The individual LEDs shall be connected such that a catastrophic loss or failure of one (1) LED will not result in the loss of the entire luminaire.

6. The power supply shall be rated for a minimum life expectancy equal to or greater than the minimum operation life of the luminaire.

7. Driver and LED modules shall be replaceable as separate units and have plug connections.

8. Luminaires shall support installation of a future electronic control module (ECM) for dimming and luminaire performance monitoring.

9. Luminaires shall have a label that states operating voltage and current range. The label must be clearly visible on the inside of the housing.

B. Physical and Mechanical Requirements.

1. The luminaire shall be a single, self-contained device, not requiring on-site assembly for installation. The power supply for the luminaire shall be integral to the unit.

2. The maximum weight and effective projected area are listed in Table 13-12-005-01 above.

3. The housing shall be constructed of aluminum and finished in a light to medium gray color.

4. Each housing shall be provided with a slip-fitter capable of mounting on a two (2) inch pipe tenon.

5. The slip-fitter shall fit on mast arms from one and five-eighths (1-5/8) to two and three-eighths (2-3/8) inches (O.D.).

6. The slip-fitter shall be an integral part of the luminaire housing.

7. The slip-fitter shall be capable of being adjusted a minimum of plus or minus ten (10) degrees from the axis of the tenon.

8. The clamping brackets of the slip-fitter shall not bottom out on the housing bosses when adjusted within the designed angular range.

9. No part of the slip-fitter mounting brackets on the luminaires shall develop a permanent set in excess of one-thirty-second (1/32) inch when the two (2) or four (4) three-eighths (3/8) inch diameter cap screws used for mounting are tightened to ten (10) foot-pounds.

10. Two (2) sets of cap screws may be supplied to allow for the slip-fitter to be mounted on any pipe tenon in the acceptable range without the cap screws bottoming out in the threaded holes.

11. The cap screws and the clamping bracket(s) shall be made of corrosion resistant materials and be compatible with the luminaire housing and mast arm or treated to prevent galvanic reactions.

12. The assembly and manufacturing process for the LED luminaire shall be designed to assure all internal components are adequately supported to withstand mechanical shock and vibration from high winds and other sources.

13. The housing shall be designed to allow water, snow and ice shedding.

14. Exposed heat sink fins shall be oriented so that water can freely run off the luminaire and carry dust and other accumulated debris away from the unit.

15. The optical assembly of the luminaire shall be protected against dust and moisture intrusion per IP66.

16. When the components are mounted on a down-opening door, the door shall be hinged and secured to the luminaire housing separately from the refractor or lens frame. The door shall be secured to the housing with captive hardware to prevent accidental opening. A safety cable shall mechanically connect the door to the housing.

17. Field wires connected to the luminaire shall terminate on a barrier-type terminal block secured to the housing. The terminal screws shall be captive and equipped with wire grips for conductors up to No. 8. Each terminal position shall be clearly identified.

18. The power supply shall be contained inside the luminaire.

19. The power supply shall be rated for outdoor operation.

20. Housing shall be fabricated from materials that are designed to withstand a three thousand (3,000) hour salt spray test as specified in ASTM B117.

21. Each refractor or lens shall be made from UV inhibited high impact plastic (such as acrylic or polycarbonate) or heat and impact resistant glass and be resistant to scratching.

22. All aluminum used in housings and brackets shall be a marine grade alloy with less than two-tenths percent (0.2%) copper. All exposed aluminum shall be anodized.

23. Polymeric materials of enclosures containing either the power supply or electronic components of the luminaire shall be made of UL94VO flame retardant materials. The lenses of the luminaire are excluded from this requirement.

24. Paint or powder coating of the housing shall conform to the requirements typical to the Arizona Department of Transportation.

C. Photometric Requirements.

1. The direct narrow band amber LED (NBA LED) luminaire does not have a CCT requirement.

2. Narrow band amber luminaires do not have a color rendering index (CRI) requirement.

3. Phosphor converted amber (PCA) LEDs shall have an S/P (scotopic/photopic) ratio of five-tenths (0.50) or less.

4. Direct narrow band amber (NBA) LEDs shall have a peak wavelength between five hundred eighty-nine (589) and five hundred ninety-five (595) NM with no more than a twenty (20) NM width at fifty percent (50%) of peak output.

D. Luminaire Identification.

1. Each luminaire shall have the manufacturer’s name, trademark, model number, serial number, date of manufacture (month-year), and lot number as identification permanently marked inside each unit and the outside of each packaging box.

2. The following operating characteristics shall be permanently marked inside each unit: rated voltage and rated power in watts and volt-ampere.

3. Each luminaire shall have a manufacturer-affixed label identifying the input wattage. Label shall be one (1) inch retroreflective numbers visible from the ground. (Ord. 2017-22, Rep&ReEn, 07/05/2017; Ord. 2020-10, Amended, 09/15/2020 (Res. 2020-13))

13-12-005-0002 Streetlight Support Structures

Streetlight support structures consist of the base, pole, and mast arms. The standards of construction for streetlight equipment shall follow those of this chapter and those found on City of Flagstaff Standard Detail No. 12-05-010 pages one (1) through three (3). The streetlight pole, mast arm, and luminaire assembly shall be in accordance with AASHTO Standard Specifications for Structural Supports for Highway Signs, Luminaires and Traffic Signals (2001 Design Criteria), to withstand a wind speed of ninety (90) miles per hour.

The geometry of the support structure varies with the luminaire size as shown in Table 13-12-005-02:

Table 13-12-005-02

Nominal Mounting Height
LUMINAIRE OUTPUT	MOUNTING HEIGHT (ft)	POLE (ft)	MAST ARM
2000 Lumens	26	30	20" X 6'
4000 Lumens	26	30	20" X 6'
6000 Lumens	39	38	8' X 8'
9000 Lumens	39	38	8' X 8'

Mast arms of different rise and length may be required to avoid existing utility conflicts. (Ord. 2017-22, Rep&ReEn, 07/05/2017; Ord. 2020-10, Amended, 09/15/2020 (Res. 2020-13))

13-12-005-0003 Structure Finish Specifications

All poles and mast arms shall be galvanized. When requested, the City Engineer will evaluate new projects that have streetlights to determine whether the support structure and luminaire may be colored. If it is so determined, then the following will apply:

A. Poles and mast arms shall be galvanized inside and out. The surfaces to be painted shall be acid washed and cleaned prior to painting. Galvanized coatings on surfaces not being painted shall be protected from the acid wash.

B. Painting and priming of luminaire and other fixture housings shall be done in accordance with the requirements of ADOT Standard Specification Sections 610 and 1002.

C. The color of the support structure shall match Sherwin-Williams Drylac RAL6012 or approved equal. Alternate colors may be acceptable if approved by the City Engineer.

D. Supplementary pedestrian-level lighting structures and luminaires may be finished in other colors; provided, that the color chosen is sensitive to and complements the environment surrounding the installation. (Ord. 2017-22, Rep&ReEn, 07/05/2017; Ord. 2020-10, Amended, 09/15/2020 (Res. 2020-13))

13-12-005-0004 Streetlight Equipment and Service Line Ownership

A. For streetlights on public roadways, the division point for ownership is at the junction point where the service line is tapped or spliced for the service to each light. Thus, the streetlight equipment, including foundation, pole, mast arm, luminaire, and wiring within each pole and to the junction point, are property of the City of Flagstaff. The electric circuit feeding the lights, the junction box at the foot of each pole, and the connections, splicing, fuses, and other equipment within the junction box are the property and responsibility of the electrical utility that provides power to the streetlights.

B. On private streets, the streetlight ownership, operation, and maintenance are by separate agreement with the utility and the homeowners’ association, entity, or organization responsible for the private street. (Ord. 2017-22, Rep&ReEn, 07/05/2017; Ord. 2020-10, Amended, 09/15/2020 (Res. 2020-13))