806 LUMINAIRES AND LAMPS
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- Furnish and install luminaires and lamps.
Select LED Roadway Luminaires from the Qualified Product List.
- Attach a safety cable to access doors that face downward and that support the weight of all or part of the ballast. The safety cable shall restrict the amount the door may swing open to 90 degrees. The cable shall be attached to the door by spring clips that can be removed without the use of tools, to allow the door to be easily removed.
- 806.03.01 Arm Mounted Luminaires. Adjust socket positions to provide the required photometric performance. Provide an individual photocell on each luminaire when specified.
- 806.03.02 Bridge Underpass Luminaires. Adjust socket positions to provide the required photometric performance.
- 806.03.03 Cleaning. Prior to the 30-day performance test, clean refractors and reflectors with a product approved by the manufacturer.
- 806.03.04 Installation. Furnish and install all luminaires and lamps in conformance with the manufacturer’s recommendations or as specified in the Contract Documents.
- 806.03.05 Luminaire Photometric Data and Calculations. Submit the following data with the catalog cut for the luminaire.
- (a) Photometric Data. A photometric file for the luminaire selected, in standard IES electronic format. Clearly indicate the name of the file on the catalog cut.
- (b) Photometric Calculations. Printouts of the predicted lighting levels for the areas indicated in the Contract Documents. If no areas are indicated, select a typical section of the project for each type of luminaire. Assume a maintenance factor of 0.64 for the calculations.
- Calculations for roadway luminaires shall show predicted horizontal footcandle values and veiling luminance ratios for the section selected.
- For pedestrian luminaires, show calculations for a typical section of walkway. If any of the walkway is adjacent to a roadway, select a section adjacent to the roadway. The printouts shall show predicted horizontal footcandles for the section of walkway selected, and horizontal footcandles and veiling luminance ratios for the roadways adjacent to the walkway. If roadway lighting also illuminates the adjacent walkway, include the roadway lighting luminaires in the calculations.
- For proposed changes to luminaire models during the course of the Contract, or if the manufacturer changes specifications for the luminaire during the Contract, submit photometric calculations and diskette for each change.
- All calculated lighting levels for roadway lighting shall be at least the levels specified in the Contract Documents. When no levels are specified, the calculated lighting levels shall be at least those specified in IES RP-8-00 American Standard Practice for Roadway Lighting.
- All calculated lighting levels on pedestrian walkways lighting shall be at least the levels specified in the Contract Documents. When no levels are specified, the calculated levels shall conform to IES. In all cases, the maximum calculated veiling luminance ratios on the traveled roadway adjacent to the walkway shall not exceed 0.4.
- For Light Emitting Diode (LED) Roadway Luminaires, correction factors shall be applied for the lumen retention at 50 000 hours. The illuminance shall not decrease by more than 30 percent at 50 000 hours, which results in a Lamp Lumen Depreciation (LLD) factor of 0.70. Apply an additional factor of 0.9 for Luminaire Dirt Depreciation (LDD), to obtain a total maintenance factor of 0.64 for calculations. Provide a luminaire mounting height of 40 ft with light centers directly over the edge line of the roadway. Assume four poles in a straight line, parallel to the roadway, spaced at 180 ft each. Perform calculations for illuminance and luminance based on a R3 class pavement. The calculation grid shall be based on a two lane road with 12 ft lanes and shall be placed between the center two poles. Calculate two lines of points for each lane. The first and the second line of calculation points shall be 4 ft from the left and 4 ft from the right lane lines, respectively. Start each line of calculation points directly under the second luminaire and continue every 20 ft until directly under the third luminaire. Each line shall have 10 points, and a total of 40 points shall be calculated. To be acceptable, the average maintained illuminance of all 40 points shall be 0.9 ft candles or greater with an average to minimum uniformity ratio no greater than 4 to 1.
- All roadway and pedestrian luminaires shall conform to the following criteria:
- (a) Fixed Aim Luminaires. Fixed aim luminaires, such as cobra-head or post top luminaires, shall have an IES Type 3 distribution pattern or as specified in the Contract Documents. The luminous intensity shall not exceed 100 candelas per 1000 lamp lumens for any point 80 degrees, or higher, above nadir.
- (b) Adjustable Aim Luminaires. Adjustable aim luminaires, such as floodlights, shall have an IES Type 3 distribution pattern or as specified in the Contract Documents. The luminous intensity shall not exceed 100 candelas per 1000 lamp lumens for any point 80 degrees, or higher, above nadir; or exceed 25 candelas per 1000 lamp lumens for any point 90 degrees, or higher above nadir; when the aiming point is nadir.
- (c) High Mast Luminaires. High mast luminaires shall have an IES Type 4 distribution pattern or as specified in the Contract Documents. The luminous intensity shall not exceed 100 candelas per 1000 lamp lumens for any point 80 degrees, or higher, above nadir; or exceed 25 candelas per 1000 lamp lumens for any point 90 degrees, or higher above nadir.
- (d) Fixed Aim LED Luminaires. LED Roadway Luminaires shall be a complete lighting device consisting of a cast aluminum housing, LED arrays, LED drivers, terminal blocks, associated hardware, all necessary wiring, and an optical assembly that provides an Illuminating Engineering Society of North America (IESNA) Type II, Type III, Type IV, or Type V distribution as specified in the Contract Documents. If no distribution type is specified, then the Luminaire must have an IESNA Type III distribution. LED Roadway Luminaires shall meet the requirements of a Full Cutoff distribution as defined by IESNA. For 480 volt operation, an integral transformer shall be provided to reduce the voltage.
- Testing. Submittal and approval of photometric data and calculations shall not remove the responsibility to perform the photometric testing required by Section 820, or to correct or replace lighting where field measurements do not conform to Administration or IES requirements. The Administration may waive the requirements of 820.03.02(d) for illuminance testing.
806.04 MEASUREMENT AND PAYMENT
- Luminaires will be measured and paid for at the Contract unit price per each. The payment will be full compensation for photocell, when required, and for all material, labor, equipment, tools, and incidentals necessary to complete the work.
- LED Roadway Luminaires will be measured and paid for at the contract unit price per each. The payment will be full compensation for the LED Roadway Luminaire and drivers, mounting hardware, wiring, integral transformer, shorting cap, and all material, labor, equipment, tools, and incidentals necessary to complete the work.
- 806.04.01 Photometric calculations, and photometric data, will not be measured but the cost will be incidental to other pertinent items included in the Contract Documents.