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| LM-64 Photometric Comparator |
Beta Version 1.02b
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Testing Luminaire ( File Name: left blank ) to LM-64 / RP-20 parking lighting standard
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| Manufact: |
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Cat. Number: |
(left blank)
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| Filename: | (left blank) |
Test Report: |
(left blank)
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| Lumens: |
Relative Photometry 3360.0
| Watts: | 50.0 |
| General: |
Horiz: 360° Vert: 180° |
Luminaire Efficacy: 67.2 Lm/W |
The following information is derived from settings and the IES file entered on Page 1. Settings have ± 2% thresholds.
| | Table shows results for filename: (left blank) as a parking garage luminaire with 8 ft mounting.
- - - - Horizontal° - - - - | |
| | 22.5° |
45° |
67.5° |
90° |
112.5° |
135° |
157.5° |
180° |
202.5° |
225° |
247.5° |
270° |
292.5° |
315° |
337.5° |
360° |
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| Vertical | Candela for wall and ceiling illumination | |
| 180° |
0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
| 135° |
0.0 | 1.6 | 10.4 | 63.9 | 62.1 | 8.2 | 0.0 | 0.0 | 0.0 | 1.6 | 10.0 | 63.3 | 62.9 | 8.6 | 0.0 | 0.0 | |
| 90° |
3.7 | 7.3 | 18.0 | 109.3 | 106.5 | 14.3 | 6.0 | 3.0 | 3.5 | 6.7 | 17.5 | 108.3 | 108.0 | 15.0 | 6.5 | 3.7 | |
| 85° |
4.0 | 16.3 | 73.5 | 444.3 | 433.0 | 59.0 | 6.5 | 3.3 | 4.0 | 15.7 | 71.5 | 440.7 | 438.5 | 61.0 | 6.5 | 4.0 | |
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Vertical FC 60" above floor, radius-feet from light (symmetrical) | Horiz
Radius |
| 85° |
0.00 | 0.01 | 0.06 | 0.37 | 0.36 | 0.05 | 0.01 | 0.00 | 0.00 | 0.01 | 0.06 | 0.37 | 0.37 | 0.05 | 0.01 | 0.00 | 34 ft |
| 80° |
0.05 | 0.14 | 0.49 | 2.96 | 2.88 | 0.40 | 0.09 | 0.05 | 0.06 | 0.14 | 0.48 | 2.93 | 2.92 | 0.41 | 0.09 | 0.05 | 17 ft |
| 75° |
0.24 | 0.98 | 4.29 | 25.82 | 25.19 | 3.47 | 0.39 | 0.22 | 0.26 | 0.93 | 4.19 | 25.61 | 25.52 | 3.56 | 0.41 | 0.24 | 11 ft |
| 70° |
0.64 | 1.77 | 6.36 | 38.18 | 37.32 | 5.18 | 1.04 | 0.62 | 0.71 | 1.71 | 6.25 | 37.92 | 37.70 | 5.29 | 1.07 | 0.64 | 8 ft |
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Vertical FC 60" above floor, for rectangular layout. | Horiz
Dist. |
| 85° |
0.00 | 0.00 | 0.05 | 0.37 | 0.36 | 0.04 | 0.00 | 0.00 | 0.00 | 0.00 | 0.05 | 0.37 | 0.37 | 0.04 | 0.00 | 0.00 | 34 ft |
| 80° |
0.00 | 0.05 | 0.39 | 2.96 | 2.88 | 0.31 | 0.03 | 0.00 | 0.00 | 0.05 | 0.38 | 2.93 | 2.92 | 0.32 | 0.03 | 0.00 | 17 ft |
| 75° |
0.01 | 0.34 | 3.38 | 25.82 | 25.19 | 2.74 | 0.14 | 0.01 | 0.01 | 0.33 | 3.31 | 25.61 | 25.52 | 2.81 | 0.14 | 0.01 | 11 ft |
| 70° |
0.04 | 0.62 | 5.01 | 38.18 | 37.32 | 4.09 | 0.37 | 0.03 | 0.04 | 0.61 | 4.93 | 37.92 | 37.70 | 4.17 | 0.38 | 0.04 | 8 ft |
| | Horizontal FC on floor, radius-feet from light @ 8-ft height | Horiz
Radius |
| 80° |
0.00 | 0.00 | 0.01 | 0.07 | 0.07 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.07 | 0.07 | 0.01 | 0.00 | 0.00 | 45
ft |
| 75° |
0.01 | 0.04 | 0.16 | 0.97 | 0.95 | 0.13 | 0.01 | 0.01 | 0.01 | 0.04 | 0.16 | 0.96 | 0.96 | 0.13 | 0.02 | 0.01 | 30
ft |
| 70° |
0.03 | 0.09 | 0.33 | 1.95 | 1.91 | 0.27 | 0.05 | 0.03 | 0.04 | 0.09 | 0.32 | 1.94 | 1.93 | 0.27 | 0.06 | 0.03 | 22
ft |
| 65° |
0.07 | 0.17 | 0.52 | 3.14 | 3.08 | 0.43 | 0.12 | 0.07 | 0.08 | 0.16 | 0.52 | 3.12 | 3.10 | 0.44 | 0.12 | 0.07 | 17
ft |
| 60° |
0.42 | 0.85 | 1.24 | 1.87 | 1.81 | 1.13 | 0.77 | 0.40 | 0.47 | 0.83 | 1.22 | 1.86 | 1.82 | 1.15 | 0.79 | 0.42 | 14
ft |
| 55° |
0.66 | 1.28 | 1.80 | 2.71 | 2.62 | 1.66 | 1.19 | 0.64 | 0.75 | 1.26 | 1.78 | 2.70 | 2.63 | 1.67 | 1.21 | 0.66 | 11
ft |
| 45° |
1.12 | 1.95 | 2.48 | 3.68 | 3.57 | 2.35 | 1.88 | 1.10 | 1.26 | 1.94 | 2.49 | 3.68 | 3.57 | 2.35 | 1.89 | 1.12 | 8
ft |
| 20° |
2.46 | 3.27 | 3.47 | 4.32 | 4.26 | 3.41 | 3.27 | 2.46 | 2.67 | 3.27 | 3.48 | 4.32 | 4.25 | 3.40 | 3.27 | 2.46 | 3
ft |
| | Aisle | |
Parking Stalls | |
Drive Aisle | | Parking Stalls |
| Drive | |
| | Min. = 0.12 fc Max. = 4.32 fc (both underlined)
Max/Min uniformity ratio = 36.00:1 | |
Red indicates illuminance is outside of IESNA LM-64-01 / RP-20 criteria
Blue > 1/2 min. illuminance can be raised to standard with a like fixture overlapping that coverage line
Highlighted Blue Horiz Radius indicates where additional luminaires may be required to meet min. illuminance
Results:
Type: Asymmetrical Parking Garage
Side vertical illuminance at 11.0 feet limits mounting distance to 22 ft. centers in drive aisle.
Results are based on illumination requirements of the Lighting Standard. Garage lighting is based on illuminance criteria for parking module dimensions and for single or double row layout. Refer to tables for random placement of fixtures and varying dimensions.
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Notes
- Illuminance results are without the benefit of floor, wall or ceiling reflectance values.
Wall reflectance may improve floor illuminance only along those borders.
- The results can suggest maximum spacing of like luminaires required to meet prescribed illumination levels, from which a total count per area may be derived
- Glare usually results when the luminaire has a significant output level at an angle greater than 70° from the vertical axis.
- Illuminance is additive. Adjacent luminaire coverage may be overlapped to raise readings up to standard, e.g. if blue print begins at 15-ft, another like luminaire mounted on 30-ft centers with its same side overlapping that same line would double that reading
- Type-I luminaires have lobes at 0° & 180° OR 90° & 270°. Type-V may have those 4 lobes or have none at all
- RP-20 minimum illuminance requirements as follows:
Parking Garage: 1 horizontal FC, 0.5 vertical FC @ 60" up. Parking Lot: 0.2 horizontal FC, 0.1 vertical FC @ 60" up
- Use "Horiz Radius" to determine where floor and vertical illuminance criteria meet with least amount of red
- The IESNA Security Lighting Committee recommends that for facial identification, the minumum vertical illuminance should be 0.5 fc
- The IESNA recommends that vertical illuminance should be at least 1/2 the horizontal illuminance at the lowest unshadowed point between luminaires
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This service provides a quick, simple assessment of lighting comparison to ascertain minimum
wattage and luminaire count. The intended purpose is improved data for calculation of ROI and payback.
Seek a thorough lighting layout by a professional before committing a lighting project.
© 2011 Patrick Mullins, all rights reserved
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