Highl ights F loodl ight ing Ltd Specialist Floodlighting Installation Contractors
Manor Farm Court, Manor Road, Lower Sundon, Beds. LU3 3NZ Tel: 01525 874888 Fax: 01525 874448 Mobile: 07885 672722
Approved Contractor
Website: www.highlights.co.uk Email: [email protected] Vat Reg No: 727 747 108
Heybridge Swifts FC – 200 Lux Match Floodlighting Proposed Floodlighting Installation 06th October 2016 Optivision is a double asymmetric downlighting luminaire that combines compact dimensions with very high efficiency. Available with narrow, medium and wide beams for flexibility in application, it provides excellent control of spill light and limitation of glare and upward leakage of light. Optivision accommodate metal-halide lamps for good colour rendering. Excellent spill-light control, limitation of glare and upward leakage of light is secured by asymmetric optics that achieve peak intensity at 62º and a sharp cut-off of light at 80º. The MHN-FC lamps guarantee pleasant and natural colour rendering and comfortable atmosphere. Louvres have been installed to all 16 Luminaires to ensure spillage is an absolute minimum. This lighting design has been created in accordance with guidance notes recommended by the ILP (Institute of Lighting Professionals) for the reduction of obtrusive light, which advises that within Zone E2 (Low district brightness areas) you should achieve the following: Source intensity (Glare) should not be above 7500cd. Vertical Illuminance should not be above 5 Lux on windows Upward Light Ratio should not be above 2.5% Within the lighting design, “Observer points” have been put in to demonstrate the luminaire intensity (Glare) at three points on the adjacent property. The calculations are on page 4 of the spillage calculations and have been calculated at: Ob1 – Result = 821cd Ob2 – Result = 618cd Ob3 - Result = 284cd The results are below the guidance notes recommendations of 7500cd ---------------------------------------------------------------------------- Within the lighting design, Vertical calculations have been put in to demonstrate the vertical illuminance on the windows (Light Intrusion) of two locations on the adjacent property. The maximum readings are on page 4 of the Spillage calculations, and have been calculated at: V – Adjacent Property 1 – Result = 0.42 Lux V – Adjacent Property 2 – Result = 0.10 Lux The results are below the guidance notes recommendations of 5 Lux ----------------------------------------------------------------------------- The Upward Light Ratio (ULR) is 0.00 - Page 4 Spillage Calculations This is below the guidance notes recommendation of below 2.5% ----------------------------------------------------------------------------- All results have been calculated at a Maintenance Factor of 1, this means that no allowance has been made for lamp depreciation. The results have been calculated with the lamps at their greatest luminance.
NIGHT TIME PHOTOS OF PREVIOUSLY INSTALLED FLOODLIGHTING The image below shows a night-time photograph of a similar floodlighting scheme installed on an all weather hockey pitch, elsewhere in the country. This illustrates the ‘cut-off’ of light from the proposed floodlights. It should be noted the direct light is in a downward directions.
The photograph below of an all weather hockey pitch has been taken from a high location and shows the extent of the lighting footprint. This indicates the dramatic ‘cut-off’ of light a short distance from the pitch using the proposed floodlights on 15m high columns.
Heybridge Swifts FC
Match Pitch Rev3Date: 06-10-2016
Designer: Andy Collins
Description: 16 Philips OptiVision 2000w luminairesmounted on 8 lighting columns 15m high.
Louvres have been fitted to all 16 Luminaires
Calculation grid complies with FA regulations
Pitch Size: 100m x 64mColumns are 4m back from the pitch
Total Installed Power = 33.90 Kw400v power supply required
Upward Light Ratio (ULR) is 0.00
Maintenance Factor: 0.80
CalcuLuX Area 7.7.1.0 E-Mail: [email protected] Phone: 07885 672722Fax: 01525 874448Telephone: 01525 874888
Manor Farm CourtManor RoadLower SundonBedfordshireLU3 3NZ
Highlights Floodlighting Ltd
The nominal values shown in this report are the result of precision calculations, based upon precisely positioned luminaires in a fixed relationship to each other and to the area under examination. In practice the values may vary due to tolerances on luminaires, luminaire positioning, reflection properties and electrical supply.
Heybridge Swifts FC Highlights Floodlighting LtdMatch Pitch Rev3 Date: 06-10-2016
Table of Contents
1. Project Description 3
1.1 3-D Project Overview 3
2. Summary 4
2.1 General Information 42.2 Obstacle Information 42.3 Project Luminaires 42.4 Calculation Results 4
3. Calculation Results 5
3.1 Football: Graphical Table 53.2 Football: Iso Contour 6
4. Luminaire Details 7
4.1 Project Luminaires 7
Philips Lighting B.V. - CalcuLuX Area 7.7.1.0 Page: 2/7
Heybridge Swifts FC Highlights Floodlighting LtdMatch Pitch Rev3 Date: 06-10-2016
1. Project Description
1.1 3-D Project Overview
A MVP507 MB/62
AA
AA
AA
AA
AA
AA
AA
AA
X
YZ
Philips Lighting B.V. - CalcuLuX Area 7.7.1.0 Page: 3/7
Heybridge Swifts FC Highlights Floodlighting LtdMatch Pitch Rev3 Date: 06-10-2016
2. Summary
2.1 General Information
The overall maintenance factor used for this project is 0.75.
2.2 Obstacle Information
Obstacle
Block 1Block 2Block 3Block 4Block 5Block 6Block 7Block 8
Transparency (%)Transparency (%)
0 0 0 0 0 0 0 0
X (m)-37.2037.2037.20
-37.20-37.20-37.2037.2037.20
Y (m)-50.50-50.5049.5049.5016.00
-17.00-17.0016.00
Position
Z (m)14.7014.7014.7014.7014.7014.7014.7014.70
2.3 Project Luminaires
Code
A
QtyQty
16
Luminaire TypeLuminaire Type
MVP507 MB/62
Lamp TypeLamp Type
1 * MHN-FC2000W/400V/740
Power (W)Power (W)
2119.0
Flux (lm)Flux (lm)
1 * 210000
The total installed power: 33.90 (kWatt)
Number of Luminaires Per Arrangement:
Arrangement
Centre ColumnsCorner Columns
LuminaireCode
A88
Power (kWatt)Power (kWatt)
16.9516.95
2.4 Calculation Results
(Il)luminance Calculations:Calculation
Football
TypeType
Surface Illuminance
UnitUnit
lux
AveAve
215
Min/AveMin/Ave
0.76
Min/MaxMin/Max
0.54
Obtrusive Light Calculations:
The upward light ratio (ULR) is 0.00.
Philips Lighting B.V. - CalcuLuX Area 7.7.1.0 Page: 4/7
Heybridge Swifts FC Highlights Floodlighting LtdMatch Pitch Rev3 Date: 06-10-2016
3. Calculation Results
3.1 Football: Graphical Table
Grid : Football at Z = -0.00 mCalculation : Surface Illuminance (lux)
Average Min/Ave Min/Max Project maintenance factor 215 0.76 0.54 0.75
A MVP507 MB/62
-65 -55 -45 -35 -25 -15 -5 5 15 25 35 45 55 65
X(m)
-75
-65
-55
-45
-35
-25
-15
-55
15
25
35
45
55
65
75
Y(m
)
AA
AA
AA
AA
AA
AA
AA
AA
168
166
190
231
218
218
218
231
190
166
168
257
302
248
254
228
208
228
254
248
302
257
222
227
243
232
221
188
221
232
243
227
222
183
191
182
194
192
163
192
194
182
191
183
183
191
182
194
192
163
192
194
182
191
183
222
227
243
232
221
188
221
232
243
227
222
257
302
248
254
228
208
228
254
248
302
257
168
166
190
231
218
218
218
231
190
166
168
Scale1:750
Philips Lighting B.V. - CalcuLuX Area 7.7.1.0 Page: 5/7
Heybridge Swifts FC Highlights Floodlighting LtdMatch Pitch Rev3 Date: 06-10-2016
3.2 Football: Iso Contour
Grid : Football at Z = -0.00 mCalculation : Surface Illuminance (lux)
Average Min/Ave Min/Max Project maintenance factor 215 0.76 0.54 0.75
A MVP507 MB/62
-65 -55 -45 -35 -25 -15 -5 5 15 25 35 45 55 65
X(m)
-75
-65
-55
-45
-35
-25
-15
-55
15
25
35
45
55
65
75
Y(m
)
17
5
17
5
17
5
17
5
175
200
20
02
00
20
0
20
0
20
02
00
200
225
22
5
22
5
22
5
22
5
22
5
22
5
225
250 250
250 250
250
250
25
0 250275
27
5
275
275
AA
AA
AA
AA
AA
AA
AA
AA
Scale1:750
Philips Lighting B.V. - CalcuLuX Area 7.7.1.0 Page: 6/7
Heybridge Swifts FC Highlights Floodlighting LtdMatch Pitch Rev3 Date: 06-10-2016
4. Luminaire Details
4.1 Project Luminaires
OptiVision MVP507MVP507 1xMHN-FC2000W/400V/740 MB/62
Light output ratios DLOR : 0.85 ULOR : 0.00 TLOR : 0.85Ballast : ConventionalLamp flux : 210000 lmLuminaire wattage : 2119.0 WMeasurement code : LVMA700000
1500
0o 30o30o
60o 60o
90o 90o
120o 120o150o 150o180o
C = 180o C = 0o
C = 270o C = 90o
C = 260o Imax C = 80o
Luminous Intensity Diagram (candela/1000 lumen)
Philips Lighting B.V. - CalcuLuX Area 7.7.1.0 Page: 7/7
Heybridge Swifts FC
Spillage Revision 3Date: 06-10-2016
Designer: Andy Collins
Description: 16 Philips OptiVision 2000w luminairesmounted on 8 lighting columns 15m high.
Louvres have been fitted to all 16 Luminaires
Calculation grid is 10m x 10m
Pitch Size: 100m x 64mColumns are 4m back from the pitch
Total Installed Power = 33.90 Kw400v power supply required
Upward Light Ratio (ULR) is 0.00
Maintenance Factor: 1
CalcuLuX Area 7.7.1.0 E-Mail: [email protected] Phone: 07885 672722Fax: 01525 874448Telephone: 01525 874888
Manor Farm CourtManor RoadLower SundonBedfordshireLU3 3NZ
Highlights Floodlighting Ltd
The nominal values shown in this report are the result of precision calculations, based upon precisely positioned luminaires in a fixed relationship to each other and to the area under examination. In practice the values may vary due to tolerances on luminaires, luminaire positioning, reflection properties and electrical supply.
Heybridge Swifts FC Highlights Floodlighting LtdSpillage Revision 3 Date: 06-10-2016
Table of Contents
1. Project Description 3
1.1 3-D Project Overview 3
2. Summary 4
2.1 General Information 42.2 Observer Information 42.3 Obstacle Information 42.4 Project Luminaires 42.5 Calculation Results 4
3. Calculation Results 6
3.1 Spillage: Graphical Table 63.2 Spillage: Iso Contour 73.3 V - Adjacent Property 1: Textual Table 83.4 V - Adjacent Property 2: Textual Table 9
4. Luminaire Details 10
4.1 Project Luminaires 10
Philips Lighting B.V. - CalcuLuX Area 7.7.1.0 Page: 2/10
Heybridge Swifts FC Highlights Floodlighting LtdSpillage Revision 3 Date: 06-10-2016
1. Project Description
1.1 3-D Project Overview
A MVP507 MB/62
AA
AA
AA
AA
AA
AA
AA
AA
X
YZ
Philips Lighting B.V. - CalcuLuX Area 7.7.1.0 Page: 3/10
Heybridge Swifts FC Highlights Floodlighting LtdSpillage Revision 3 Date: 06-10-2016
2. Summary
2.1 General Information
The overall maintenance factor used for this project is 1.00.
2.2 Observer Information
Code
AaBbCc
ObserverObserver
Ob1Ob2Ob3
X (m)43.0087.00
109.00
Y (m)-127.00-127.00-117.00
Position
Z (m) 1.60 1.60 1.60
2.3 Obstacle Information
Obstacle
Block1Block2Block3Block4Block5Block6Block7Block8
Transparency (%)Transparency (%)
0 0 0 0 0 0 0 0
X (m)-37.20-37.2037.2037.20
-37.20-37.2037.2037.20
Y (m)-50.5049.5049.50
-50.50-17.5016.5016.50
-17.50
Position
Z (m) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
2.4 Project Luminaires
Code
A
QtyQty
16
Luminaire TypeLuminaire Type
MVP507 MB/62
Lamp TypeLamp Type
1 * MHN-FC2000W/400V/740
Power (W)Power (W)
2119.0
Flux (lm)Flux (lm)
1 * 210000
The total installed power: 33.90 (kWatt)
Number of Luminaires Per Arrangement:
Arrangement
Centre ColumnsCorner Columns
LuminaireCode
A88
Power (kWatt)Power (kWatt)
16.9516.95
2.5 Calculation Results
(Il)luminance Calculations:Calculation
SpillageV - Adjacent Property 1V - Adjacent Property 2
TypeType
Surface IlluminanceVertical IlluminanceVertical Illuminance
UnitUnit
luxluxlux
AveAve
58.9 0.09 0.02
MinMin
0.0 0.00 0.00
MaxMax
376.4 0.40 0.10
Min/AveMin/Ave
0.000.030.00
Min/MaxMin/Max
0.000.010.00
Obtrusive Light Calculations:
ObserverCode
AaBb
LuminaireCode
LuminaireCode
AA
X (m)
-37.00-37.00
Y (m)
17.0017.00
Position
Z (m)
15.0015.00
Rot.
-38.00-38.00
Tilt90
67.0067.00
Aiming Angles
Tilt0
-0.00-0.00
MaximumIntensity (cd)
MaximumIntensity (cd)
821618
Philips Lighting B.V. - CalcuLuX Area 7.7.1.0 Page: 4/10
Heybridge Swifts FC Highlights Floodlighting LtdSpillage Revision 3 Date: 06-10-2016
ObserverCode
Cc
LuminaireCode
A
X (m)X (m)
-37.00
Y (m)Y (m)
17.00
Position
Z (m)Z (m)
15.00
Rot.Rot.
-38.00
Tilt90Tilt90
67.00
Aiming Angles
Tilt0Tilt0
-0.00
MaximumIntensity (cd)
445
The upward light ratio (ULR) is 0.00.
Philips Lighting B.V. - CalcuLuX Area 7.7.1.0 Page: 5/10
Heybridge Swifts FC Highlights Floodlighting LtdSpillage Revision 3 Date: 06-10-2016
3. Calculation Results
3.1 Spillage: Graphical Table
Grid : Spillage at Z = -0.00 mCalculation : Surface Illuminance (lux)
Average Minimum Maximum Min/Ave Min/Max Project maintenance factor 58.9 0.0 376.4 0.00 0.00 1.00
A MVP507 MB/62
-100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
X(m)
-160
-150
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
010
20
30
40
50
60
70
80
90
100
110
120
130
Y(m
)
AA
AA
AA
AA
AA
AA
AA
AA
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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
2
2
2
1
1
1
1
1
1
0
0
0
0
0
1
1
3
3
3
4
3
4
4
4
3
4
3
3
3
1
1
0
0
0
0
1
0
1
1
1
1
3
3
2
3
3
1
1
1
1
0
1
0
0
0
0
1
5
71
2
102
68
21
25
71
25
21
68
102
2
71
5
1
0
0
0
1
2
8
77
297
272
323
308
286
297
286
308
323
272
297
77
8
2
1
0
0
1
3
19
126
315
376
344
341
324
267
324
341
344
376
315
126
19
3
1
0
0
1
6
29
130
237
282
303
298
283
247
283
298
303
282
237
130
29
6
1
0
0
1
7
49
129
223
247
224
249
277
227
277
249
224
247
223
129
49
7
1
0
0
1
6
29
130
237
282
303
298
283
247
283
298
303
282
237
130
29
6
1
0
0
1
3
19
126
315
376
344
341
324
267
324
341
344
376
315
126
19
3
1
0
0
1
2
8
77
297
272
323
308
286
297
286
308
323
272
297
77
8
2
1
0
0
0
1
5
2
2
9
29
21
25
71
25
21
29
9
2
2
5
1
0
0
0
0
1
3
9
14
19
15
16
36
8
36
16
15
19
14
9
3
1
0
0
0
0
1
1
3
3
3
4
3
4
4
4
3
4
3
3
3
1
1
0
0
0
0
0
1
1
1
1
1
1
2
2
2
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Scale1:1500
Philips Lighting B.V. - CalcuLuX Area 7.7.1.0 Page: 6/10
Heybridge Swifts FC Highlights Floodlighting LtdSpillage Revision 3 Date: 06-10-2016
3.2 Spillage: Iso Contour
Grid : Spillage at Z = -0.00 mCalculation : Surface Illuminance (lux)
Average Minimum Maximum Min/Ave Min/Max Project maintenance factor 58.9 0.0 376.4 0.00 0.00 1.00
A MVP507 MB/62
-100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
X(m)
-170
-160
-150
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
010
20
30
40
50
60
70
80
90
100
110
120
130
140
Y(m
)
1
11
1
1 11
1
1
1
1
11
1
2
2
2
2
22
2
2
22
22
22
2
2
55
55
5
5
5
5
55
5
10
10
10
10
10
25
25
25
25
25
50
50
50
50
10
0
100
100
AA
AA
AA
AA
AA
AA
AA
AA
Scale1:1500
Philips Lighting B.V. - CalcuLuX Area 7.7.1.0 Page: 7/10
Heybridge Swifts FC Highlights Floodlighting LtdSpillage Revision 3 Date: 06-10-2016
3.3 V - Adjacent Property 1: Textual Table
Grid : V - Adjacent Property 1 at Y = -119.00 mCalculation : Vertical Illuminance in +Y direction (lux)Height above grid : 0.00 m
Average Minimum Maximum Min/Ave Min/Max Project maintenance factor 0.09 0.00 0.40 0.03 0.01 1.00
X (m) 78.00 70.91 63.82 56.73 49.64 42.55 35.45 28.36 21.27 14.18 7.09 0.00 Z (m)
11.00 0.00< 0.00 0.00 0.01 0.01 0.01 0.01 0.01 0.01 0.00 0.00 0.01
9.89 0.00 0.00 0.01 0.01 0.02 0.02 0.02 0.01 0.01 0.01 0.01 0.01
8.78 0.01 0.01 0.01 0.02 0.03 0.03 0.02 0.02 0.02 0.02 0.03 0.04
7.67 0.01 0.01 0.02 0.02 0.04 0.04 0.03 0.03 0.03 0.04 0.06 0.09
6.56 0.01 0.02 0.03 0.04 0.05 0.05 0.05 0.05 0.05 0.06 0.09 0.14
5.44 0.03 0.03 0.04 0.06 0.08 0.08 0.07 0.07 0.08 0.09 0.13 0.20
4.33 0.04 0.05 0.06 0.09 0.10 0.10 0.09 0.10 0.11 0.12 0.18 0.25
3.22 0.05 0.06 0.08 0.11 0.14 0.14 0.13 0.14 0.15 0.15 0.23 0.31
2.11 0.06 0.08 0.10 0.15 0.18 0.18 0.17 0.18 0.21 0.21 0.29 0.36
1.00 0.08 0.10 0.12 0.19 0.23 0.22 0.22 0.24 0.25 0.27 0.35 0.40>
Philips Lighting B.V. - CalcuLuX Area 7.7.1.0 Page: 8/10
Heybridge Swifts FC Highlights Floodlighting LtdSpillage Revision 3 Date: 06-10-2016
3.4 V - Adjacent Property 2: Textual Table
Grid : V - Adjacent Property 2 at Y = -109.00 mCalculation : Vertical Illuminance in +Y direction (lux)Height above grid : 0.00 m
Average Minimum Maximum Min/Ave Min/Max Project maintenance factor 0.02 0.00 0.10 0.00 0.00 1.00
X (m) 148.00 141.64 135.27 128.91 122.55 116.18 109.82 103.45 97.09 90.73 84.36 78.00 Z (m)
11.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00< 0.00 0.00 0.00 0.00
9.89 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01
8.78 0.00 0.00 0.00 0.00 0.01 0.01 0.01 0.00 0.01 0.01 0.01 0.01
7.67 0.00 0.00 0.01 0.01 0.01 0.01 0.01 0.00 0.01 0.01 0.01 0.01
6.56 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.00 0.01 0.01 0.01 0.02
5.44 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.02 0.02 0.03
4.33 0.01 0.01 0.01 0.01 0.01 0.01 0.02 0.01 0.02 0.03 0.03 0.04
3.22 0.01 0.01 0.01 0.01 0.02 0.02 0.02 0.01 0.03 0.04 0.05 0.06
2.11 0.01 0.01 0.01 0.02 0.02 0.02 0.02 0.02 0.04 0.05 0.06 0.07
1.00 0.01 0.02 0.02 0.02 0.02 0.03 0.03 0.03 0.05 0.07 0.09 0.10>
Philips Lighting B.V. - CalcuLuX Area 7.7.1.0 Page: 9/10
Heybridge Swifts FC Highlights Floodlighting LtdSpillage Revision 3 Date: 06-10-2016
4. Luminaire Details
4.1 Project Luminaires
OptiVision MVP507MVP507 1xMHN-FC2000W/400V/740 MB/62
Light output ratios DLOR : 0.85 ULOR : 0.00 TLOR : 0.85Ballast : ConventionalLamp flux : 210000 lmLuminaire wattage : 2119.0 WMeasurement code : LVMA700000
1500
0o 30o30o
60o 60o
90o 90o
120o 120o150o 150o180o
C = 180o C = 0o
C = 270o C = 90o
C = 260o Imax C = 80o
Luminous Intensity Diagram (candela/1000 lumen)
Philips Lighting B.V. - CalcuLuX Area 7.7.1.0 Page: 10/10
Andy Collins
HSFC S2 1:1250@A3
0Design by:
Drawing No: Scale:
Date: Revision:
.
.
Project Name:
Heybridge Swifts Football Club Spillage Iso Contours Tel: 01525 874888 Fax: 01525 874448Email: [email protected]
Highlights Floodlighting LtdManor Farm CourtManor Rd, Lower SundonBeds, LU3 3NZ
06-10-2016
N
S
EW
Andy Collins
HSFC S1 1:1250@A3
0Design by:
Drawing No: Scale:
Date: Revision:
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Project Name:
Heybridge Swifts Football Club Spillage Results Tel: 01525 874888 Fax: 01525 874448Email: [email protected]
Highlights Floodlighting LtdManor Farm CourtManor Rd, Lower SundonBeds, LU3 3NZ
06-10-2016
N
S
EW
Guidance Notes for the Reduction of Obtrusive Light GN01:2011
1
GUIDANCE NOTES FOR THE
REDUCTION OF OBTRUSIVE LIGHT
“Think before you light - The right amount of light, where wanted, when
wanted.”
Man's invention of artificial light has done much to safeguard and enhance our night-time
environment but, if not properly controlled, obtrusive light (sometimes referred to as
light pollution) can present serious physiological and ecological problems.
Obtrusive Light, whether it keeps you awake through a bedroom window or impedes your
view of the night sky, is a form of pollution, which may also be a nuisance in law and which
can be substantially reduced without detriment to the lighting task.
Sky glow, the brightening of the night sky, Glare the uncomfortable brightness of a light
source when viewed against a darker background, and Light Intrusion (“Trespass”), the
spilling of light beyond the boundary of the property or area being lit, are all forms of obtrusive light which may cause nuisance to others and waste money and energy. Think
before you light. Is it necessary? What effect will it have on others? Will it cause a
nuisance? How can you minimise the problem?
Figure 1 – Types of obtrusive light
Do not "over" light. This is a major cause of obtrusive light and is a waste of energy. There
are published standards for most lighting tasks, adherence to which will help minimise
upward reflected light. Organisations from which full details of these standards can be obtained are given on the last page of this leaflet.
Guidance Notes for the Reduction of Obtrusive Light GN01:2011
2
Dim or switch off lights when the task is finished. Generally a lower level of lighting will
suffice to enhance the night time scene than that required for safety and security.
“Good Design equals Good Lighting”
Any lighting scheme will consist of three basic elements: a light source, a luminaire and a method of installation.
Light sources (Lamps)
Remember that the light source output in LUMENS is not the same as the wattage and that it is the former that is important in combating the problems of obtrusive light.
Most nightime visual tasks are only dependant on light radiated within the visual spectrum.
It is therefore NOT necessary for light sources to emit either ultra-violet or infra-red
radiation unless specifically designed to do so. It is also understood that light from the
shorter wavelengths of the spectrum has important effects on both flora and fauna that
should be considered.
Research indicates that light from the blue end of the spectrum has important non-visual
effects on the health of the human body, in particular in our sleep/wake patterns. It is
therefore important to appreciate that while in obtrusive light terms the use of blue light
should be minimised, there are many night-time tasks such as driving and sports where to
be fully awake is an important aid to safety.
Luminaires
Care should always be taken when selecting luminaires to ensure that appropriate products
are chosen and that their location will reduce spill light and glare to a minimum.
Use specifically designed lighting equipment that minimises the upward spread of light near
to and above the horizontal. The most sensitive/critical zones for minimising sky glow are
those between 90o and 100o as shown in Figure 2 and referred to as the lower, upward
light output zone (UL).
Figure 2 – Critical luminaire angles
For minimising sky glow
Guidance Notes for the Reduction of Obtrusive Light GN01:2011
3
For most sports and area lighting installations the use of luminaires with double-
asymmetric beams designed so that the front glazing is kept at or near parallel to the
surface being lit should, if correctly aimed, ensures minimum obtrusive light.
Appendices 1 and 2 to these notes gives more details of how to choose and if necessary
modify luminaires.
Installation
In most cases it will be beneficial to use as high a mounting height as possible, giving due
regard to the daytime appearance of the installation. The requirements to control glare for
the safety of road users are given in Table 3.
Keep glare to a minimum by ensuring that the main beam angle of all lights directed
towards any potential observer is not more than 70o. Higher mounting heights allow lower
main beam angles, which can assist in reducing glare. In areas with low ambient lighting
levels, glare can be very obtrusive and extra care should be taken when positioning and
aiming lighting equipment. With regard to domestic security lighting the ILP produces an
information leaflet GN02:2009 that is freely available from its website.
Figure 3 – Luminare aiming angles
Poor Okay Good
When lighting vertical structures such as advertising signs, direct light downwards wherever possible. If there is no alternative to up-lighting, as with much decorative lighting
of buildings, then the use of shields, baffles and louvres will help reduce spill light around
and over the structure to a minimum.
For road and amenity lighting installations, (see also design standards listed on Page 5)
light near to and above the horizontal should normally be minimised to reduce glare and sky glow (Note ULR’s in Table 2). In rural areas the use of full horizontal cut off luminaires
installed at 0o uplift will, in addition to reducing sky glow, also help to minimise visual
intrusion within the open landscape. However in some urban locations, luminaires fitted
with a more decorative bowl and good optical control of light should be acceptable and may
be more appropriate.
Guidance Notes for the Reduction of Obtrusive Light GN01:2011
4
Figure 4 – Façade Illumination
Poor Good Good
Since 2006 “Artificial Light” has been added to the list of possible Statutory Nuisances in
England, Wales and Scotland. The monitoring of such nuisances will be the responsibility
of Environmental Health Officers (EHOs) for which separate guidance is being produced.
With regard to the planning aspect, many Local Planning Authorities (LPAs) have already
produced, or are producing, policies that within the planning system will become part of
their local development framework. For new developments there is an opportunity for LPAs
to impose planning conditions related to external lighting, including curfew hours.
The Scottish Executive has published a design methodology document (March 2007) entitled “Controlling Light Pollution and Reducing Energy Consumption” to further assist in
mitigating obtrusive light elements at the design stage.
ENVIRONMENTAL ZONES
It is recommended that Local Planning Authorities specify the following environmental
zones for exterior lighting control within their Development Plans.
Table 1 – Environmental Zones
Zone Surrounding Lighting
Environment
Examples
E0 Protected Dark UNESCO Starlight Reserves, IDA Dark Sky
Parks
E1 Natural Intrinsically dark National Parks, Areas of Outstanding
Natural Beauty etc
E2 Rural Low district brightness
Village or relatively dark outer suburban
locations
E3 Suburban Medium district
brightness
Small town centres or suburban locations
E4 Urban High district
brightness
Town/city centres with high levels of night-
time activity
Guidance Notes for the Reduction of Obtrusive Light GN01:2011
5
Where an area to be lit lies on the boundary of two zones the obtrusive light limitation
values used should be those applicable to the most rigorous zone.
NB: Zone E0 must always be surrounded by an E1 Zone.
DESIGN GUIDANCE
The following limitations may be supplemented or replaced by a LPA’s own planning
guidance for exterior lighting installations. As lighting design is not as simple as it may
seem, you are advised to consult and/or work with a professional lighting designer before
installing any exterior lighting.
Table 2 – Obtrusive Light Limitations for Exterior Lighting Installations – General Observers
Environment
al Zone
Sky Glow
ULR
[Max %](1)
Light Intrusion
(into Windows)
Ev [lux] (2)
Luminaire Intensity
I [candelas] (3)
Building
Luminance
Pre-curfew (4)
Pre-
curfew
Post-
curfew
Pre-
curfew
Post-
curfew
Average,
L [cd/m2]
E0 0 0 0 0 0 0
E1 0 2 0 ( 1*) 2,500 0 0
E2 2.5 5 1 7,500 500 5
E3 5.0 10 2 10,000 1,000 10
E4 15 25 5 25,000 2,500 25
ULR = Upward Light Ratio of the Installation is the maximum permitted
percentage of luminaire flux that goes directly into the sky.
Ev = Vertical Illuminance in Lux - measured flat on the glazing at the centre of
the window.
I = Light Intensity in Candelas (cd)
L = Luminance in Candelas per Square Metre (cd/m2)
Curfew = the time after which stricter requirements (for the control of
obtrusive light) will apply; often a condition of use of lighting applied by the local planning authority. If not otherwise stated - 23.00hrs is suggested.
* = Permitted only from Public road lighting installations
(1) Upward Light Ratio – Some lighting schemes will require the deliberate and careful use of upward light, e.g. ground recessed luminaires, ground mounted floodlights,
festive lighting, to which these limits cannot apply. However, care should always be
taken to minimise any upward waste light by the proper application of suitably
directional luminaires and light controlling attachments.
Guidance Notes for the Reduction of Obtrusive Light GN01:2011
6
(2) Light Intrusion (into Windows) – These values are suggested maxima and need
to take account of existing light intrusion at the point of measurement. In the case of
road lighting on public highways where building facades are adjacent to the lit
highway, these levels may not be obtainable. In such cases where a specific
complaint has been received, the Highway Authority should endeavour to reduce the
light intrusion into the window down to the post curfew value by fitting a shield,
replacing the luminaire, or by varying the lighting level.
(3) Luminaire Intensity – This applies to each luminaire in the potentially obtrusive
direction, outside of the area being lit. The figures given are for general guidance
only and for some sports lighting applications with limited mounting heights, may be
difficult to achieve.
(4) Building Luminance – This should be limited to avoid over lighting, and related to
the general district brightness. In this reference building luminance is applicable to
buildings directly illuminated as a night-time feature as against the illumination of a
building caused by spill light from adjacent luminaires or luminaires fixed to the
building but used to light an adjacent area.
TI = Threshold Increment is a measure of the loss of visibility caused by the
disability glare from the obtrusive light installation
Lv = Veiling Luminance is a measure of the adaptation luminance caused by the
disability glare from the obtrusive light installation
(1) = Road Classifications as given in BS EN 13201 - 2: 2003 Road lighting
Performance requirements. Limits apply where users of transport systems are subject to a reduction in the ability to see essential information. Values given
are for relevant positions and for viewing directions in path of travel. For a
more detailed description and methods for determining, calculating and
measuring the above parameters see CIE Publication 150:2003.
Table 3 – Obtrusive Light Limitations for Exterior Lighting
Installations – Road Users
Road
Classification (1)
Threshold Increment (TI) Veiling
Luminance (Lv)
No road lighting 15% based on adaptation
luminance of 0.1cd/m2
0.04
ME6/ ME5
15% based on adaptation
luminance of 1cd/m2
0.25
ME4/ ME3
15% based on adaptation
luminance of 2cd/m
0.40
ME2 / ME1
15% based on adaptation
luminance of 5cd/m2
0.84
Guidance Notes for the Reduction of Obtrusive Light GN01:2011
7
RELEVANT PUBLICATIONS AND STANDARDS:
British Standards: BS 5489-1: 2003 Code of practice for the design of road lighting – Part 1: Lighting
www.bsi.org.uk of roads and public amenity areas
BS EN 13201-2:2003 Road lighting – Part 2: Performance requirements BS EN 13201-3:2003 Road lighting – Part 3: Calculation of performance
BS EN 13201-4:2003 Road lighting – Part 4: Methods of measuring lighting
performance. BS EN 12193: 1999 Light and lighting – Sports lighting
BS EN 12464-2: 2007 Lighting of work places – Outdoor work places
Countryside Commission/ Lighting in the Countryside: Towards good practice (1997) (Out of Print but DOE available on www.communities.gov.uk/index.asp?id=1144823)
UK Government / Defra Statutory Nuisance from Insects and Artificial Light – Guidance on Sections 101 to www.defra.gov.uk 103 of the Clean Neighbourhoods and Environment Act 2005
Road Lighting and the Environment (1993) (Out of Print)
CIBSE/SLL Publications: CoL Code for Lighting (2002) www.cibse.org LG1 The Industrial Environment (1989)
LG4 Sports (1990+Addendum 2000)
LG6 The Exterior Environment (1992)
FF7 Environmental Considerations for Exterior Lighting (2003)
CIE Publications: 01 Guidelines for minimizing Urban Sky Glow near Astronomical Observatories
(1980) www.cie.co.at 83 Guide for the lighting of sports events for colour television and film systems
(1989)
92 Guide for floodlighting (1992) 115 Recommendations for the lighting of roads for motor and pedestrian traffic –
Second Edition (2010)
126 Guidelines for minimizing Sky glow (1997) 129 Guide for lighting exterior work areas (1998)
136 Guide to the lighting of urban areas (2000)
150 Guide on the limitations of the effect of obtrusive light from outdoor lighting installations (2003)
154 The Maintenance of outdoor lighting systems (2003)
ILP Publications: TR 5 Brightness of Illuminated Advertisements (2001) www.theilp.org.uk TR24 A Practical Guide to the Development of a Public Lighting Policy for Local
Authorities (1999)
GN02 Domestic Security Lighting, Friend or Foe
ILP/CIBSE Joint Lighting the Environment - A guide to good urban lighting (1995)
Publications
ILP/CSS Joint Code of Practice for the installation, maintenance and removal of seasonal
Publications decorations. (2005)
ILP/CfDS Joint Publication Towards Understanding Sky glow. 2007
www.dark-skies.org
IESNA www.iesna.org TM-15-07 (R) Luminaire Classification System for Outdoor luminaires
NB: These notes are intended as guidance only and the application of the values given in Tables 2 & 3 should be given due consideration along with all other factors in the lighting design. Lighting is a complex subject with both objective and subjective criteria to be considered. The notes are therefore no substitute for professionally assessed and designed lighting,
where the various and maybe conflicting visual requirements need to be balanced.
© 2011 The Institution of Lighting Professionals. Permission is granted to reproduce and distribute this document, subject to the restriction that the complete document must be copied, without alteration, addition or deletion.
Guidance Notes for the Reduction of Obtrusive Light GN01:2011
8
APPENDIX 1 - PROPOSED OUTDOOR LUMINAIRE CLASSIFICATION SYSTEM
Variable Aim Luminaires – General Classifications:
Proposed labelling System:
Fixed Position luminaires Variable Aim Luminaires (Shown here for a 45o Double-Asymmetric
luminaire aimed at 70o – with and without a cowl).
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