Harris County Toll Road Authority

SPECIAL SPECIFICATION

LED Underpass Light Assemblies

I. Description. Furnish, fabricate, and install Light-Emitting Diode (LED) underpass light assemblies including all associated electrical conduit, wiring and appurtenances.

2. Materials. Provide new materials that comply with the details shown on the plans and the requirements of this Item:

~ Item 620, "Electrical Conductors"

Provide 6 sets of submittals for the complete fixture and both printed and electronic photometric files in Illuminating Engineering Society (IES) format to the Engineer at the project address. Obtain the Engineer's approval of the submittals before purchasing materials and beginning work.

Provide LED underpass illumination assemblies as specified in the Underpass Lighting Schedule shown below and with IES distribution patterns shown in article B. Lighting Criteria.

UNDERPASS LIGHTINGSCHEDULE

TYPE CATALOG NUMBER DESCRIPTION

Holophane LEDG060355KAH I-IL4 with

P200S18B-HG

LEDgcnd roadway luminaire with wall bracket, ventilated housing with ten field replaceable modules with 6 LEDs and prismatic glass lenses, 5000K CCT, 350mA driver, 480V, 68W maximum, Type IV distribution, metallic graphite powder coating, hot-dipped galvanized steel 4-bolt wall bracket with 15 degree tilt arm and safet cable

Holophane LEDG060355KAHI-IL4with

P200S020B-15-HG

LEDgend roadway luminaire with column bracket, ventilated housing with ten field replaceable modules with 6 LEDs and prismatic glass lenses, 5000K CCT, 350rnA driver, 480V, 68W maximum, Type IV distribution, metallic graphite powder coating, hot-dipped galvanized steel 2-bolt column bracket with I 5 degree tiltarm and safety cable

SS 8779

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A. Luminaire Specifications

1. All luminaire housings shall be die-cast from low copper aluminum and finished with polyester powder paint. Luminaire shall pass humidity testing per IEC 60028- 2-3 1987. Paint finish shall pass the 1000 hour salt fog test per ASTM B117.

2. Fixture mounting brackets shall be hot-dipped galvanized steel.

3. All luminaire optics shall utilize prismatic glass lenses. No exposed LEDs or plastic or clear lenses are allowed. Optical systems shall be sealed with an IP-66 dust and moisture rating per IEC-60028-2-3 1987.

4. All luminaires shall have integral surge protection module that meets category C low (6kV, 3kA) per ANSVIEEEC62.41-2002 specification.

5. All luminaires shall be RoHS compliant and meet EMI compliance per FCC Title 47 CFR Part 15, Class A.

6. All luminaires shall be modular for maintenance purposes allowing for field replacement of LED modules, drivers and surge protection modules with no soldering. Pole or bracket mounted fixtures shall have tool-less entry.

7. Individual LEDs shall be electrically isolated in groups of four or less so that any failure within that group will not affect the light output of the rest of the LEDs in the fixture.

8. Luminaires shall have integral provisions for pendant, wall or ceiling mounting as indicated in constructions drawings.

9. Lurninaires mounted to a separate bracket or pole shall utilize a 4-bolt clamp suitable for 1.25" — 2.375"OD arms and allow for a +/- 6 degree vertical adjustment.

10. All fixture mountings including separate fixture bracket arm and pendants shall be suitably rated for 100 mph sustained wind

11. Pendant mounted luminaires mounted directly to bridge or underpass structures shall include a safety cable.

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12. Luminaires shall pass vibration testing withstanding oscillatory motion with a peak acceleration of at least 1.5G for the life of the fixture with no structural damage to the enclosure and no loosening of fasteners.

13. Luminaires mounted to a separate arm shall further comply with ANSI C135:31 2001 for 100,000 cycles at 3G acceleration.

14. LED color temperature (CCT) shall be 5000K +/- 250 with a color rendering index (CRI) of 75+/- 5%.

IS.

17.

19.

All luminaires shall be thermally optimized utilizing a ventilated design providing maximum airflow through the fixture with no exposed heat sink fins (unless pendant mounted directly under a bridge or underpass) ensuring a minimum of 100,000 hours L70 life for the LEDs at 40 degree C or 70,000 hours L70 life at 55 degrees C.

Driver life shall be rated at a minimum of 100,000 hours at 25 degree C. Dual drivers with automatic switching can be used if necessary to achieve life expectancy.

Lurninaire weight shall not exceed 45 lbs. if mounted directly to a bridge or underpass structure.

Luminaires mounted to a separate bracket shall not exceed 28 lbs. and an EPA of

0.62 sq.A.

Luminaire shall be provided with a 5 year manufacturer's warranty for all parts.

B. Lighting Criteria

All underpass drive and turnaround lanes shall be illuminated to not less than 1.2 horizontal foot-candles'aintained average with an average-to-minimum ratio not to exceed 3.0: l.

The area of illumination shall be at paveinent level under the overpass deck.

Light Loss Factor (LLF) shall include Lamp Lumen Depreciation (LLD) as published by the manufacturer in accordance with IES LM-80 LED Module lumen depreciation. LLF shall also include a Luminaire Dirt Depreciation (LDD) of not less than 0.95 and any applicable Color or Temperature Factors.

Illumination results must be calculated using photometric tests in accordance with IES LM79-08 Luminaire Photometric Testing from a testing lab with NVLAP accreditation from the US Department of Commerce.

Illumination results shall be provided in a computer generated point-to-point grid of not more than 5' 5'. Results shall be submitted in both printed and electronic format.

6. Shadowing from light obstructions such as bent caps shall be considered in all illumination calculations.

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7. No reflectances shall be considered in any illumination calculations.

C. Alternate Luminaires

l. All luminaires shall be furnished and installed as specified and as indicated on the construction drawings.

2. Luminaire inanufacturer shall have a minimum of 15 years of experience producing exterior roadway lighting fixtures.

2. Alternate luminaires shall be submitted for approval by the Engineer. A complete luminaire shall be provided for laboratory analysis of the provided photometrics and the construction features per the criteria noted in this specification. This laboratory analysis shall be completed by Mr. Richard Jeter of the Jeter Lighting Studio in Houston Texas. All costs associated with this testing shall be included as a part of bid price. Noticeable deviations in the construction features of the proposed alternate fixture and/or the photometric performance shall be a basis of rejection of the proposed alternate fixture.

3. Alternate luminaire subrnittals shall include manufacturer's data sheets documenting compliance with all required luminaire specifications and computer generated illumination results indicating compliance with the Lighting Criteria.

Incomplete subrnittals shall be rejected.

3. iVleasurement. This Item will be measured as each LED Underpass Light Assembly furnished, installed, tested, and accepted.

4. Payment. The work performed and materials furnished in accordance with this Item and measured as provided under "Measurement" will be paid for at the unit price bid for "Underpass Light Fixture HCTRA U/P LED" of the types specified. The Department will pay for electrical energy consumed by the lighting system.

This price is full compensation for removing the existing light fixture, furnishing, installing, and testing luminaires; drivers, LED modules, internal transformer, internal conductors, and connections; system perforinance testing; light arm, brackets, plates, and hardware; and equipment, labor, tools, and incidentals.

New conduit will be paid for under Item6I8, "Conduit." New conductors, except the conductors internal to the pole, will be paid for under Item 620, "Electrical Conductors."

New ground boxes will be paid for under Item 624, "Ground Boxes." New electrical services willbe paid for under Item 628, "Electrical Services."

End Special Specification