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P H O T O M E T R I C S – S M A L L
450
900
1350
30°
CP/1000
A I S - 7 0 - M H - G 1 2 - W
70-Watt Coated Ceramic Metal Halide 12" Glass
Refractor, Wide Distribution, 6,000-Lumen Lamps
170
340
510
30°
CP/1000
A I S - 1 4 2 - C F - G 1 2 - M
42-Watt CF42DT/E/841, 12" Glass Refractor,
Medium Distribution, 3,200-Lumen Lamps
400
800
30°
CP/1000
A I S - 2 4 2 - C F - A C 1 2 - M
42-Watt CF42TTT/E/841, 12" Clear Acrylic Refractor,
Medium Distribution, 3,200-Lumen Lamps
Coefficients Of Utilization
Effective floor cavity reflectance
rc
80%
rw
70
50 30 10
70 50 30 10
RCR
88
83 79 75
84 79 76 72
1
79
72 66 61
76 69 63 59
2
72
63 56 50
69 60 54 48
3
66
55 48 42
63 53 46 41
4
60
49 41 35
57 47 40 35
5
90°
55
44 36 30
53 42 35 30
6
51
39 32 26
48 38 31 26
7
47
36 28 23
45 34 27 23
8
44
32 25 20
42 31 24 20
9
60°
41
30 23 18
39 28 22 18
10
Spacing Criterion
1.8
Zone
%Lamp
Zone
0-30
13.0
0-90
0-40
25.1
90-180
0-60
52.6
Total
Coefficients Of Utilization
Effective floor cavity reflectance
rc
80%
rw
70
50 30 10
70 50 30 10
RCR
87
82 77 73
82 78 74 70
1
78
70 63 57
74 66 60 55
2
70
60 52 46
66 57 50 44
3
64
52 44 37
60 50 42 36
4
58
46 37 31
54 44 36 30
5
90°
53
41 32 26
50 39 31 25
6
49
36 28 23
46 34 27 22
7
45
33 25 20
42 31 24 19
8
42
30 22 17
39 28 21 16
9
60°
39
27 20 15
37 26 19 14
10
Spacing Criterion
2.8
Zone
%Lamp
Zone
0-30
8.9
0-90
0-40
18.2
90-180
0-60
42.3
Total
Coefficients Of Utilization
Effective floor cavity reflectance
rc
80%
rw
70
50 30 10
70 50 30 10
RCR
85
80 75 70
80 75 70 66
1
76
67 60 54
71 63 57 51
2
68
58 50 43
63 54 47 41
3
62
50 42 35
57 47 39 33
4
56
44 35 29
52 41 33 28
5
90°
51
39 31 25
48 36 29 23
6
47
35 27 21
44 33 25 20
7
44
31 23 18
41 29 22 17
8
40
28 21 16
38 27 20 15
9
60°
38
26 19 14
35 24 18 13
10
Spacing Criterion
2.4
Zone
%Lamp
Zone
0-30
6.4
0-90
0-40
13.5
90-180
0-60
33.7
Total
20%
70%
50%
30%
50 30 10
50 30 10
73 70 67
66 64 62
63 59 55
58 54 51
55 50 45
51 46 42
49 43 38
45 40 36
43 37 33
40 35 31
39 33 28
36 31 27
35 29 24
32 27 23
32 26 21
29 24 20
29 23 19
27 22 18
26 21 17
25 20 16
%Lamp
68.6
16.9
85.5
20%
70%
50%
30%
50 30 10
50 30 10
70 67 64
63 60 58
59 54 50
53 49 46
51 45 40
46 41 37
45 38 33
40 35 30
39 33 28
35 30 25
35 28 23
31 26 22
31 25 20
28 23 18
28 22 17
25 20 16
26 19 15
23 18 14
23 17 13
21 16 12
%Lamp
65.4
21.7
87.1
20%
70%
50%
30%
50 30 10
50 30 10
66 62 59
57 55 52
55 50 46
48 44 40
47 41 36
41 36 32
41 35 30
36 30 26
36 30 25
31 26 22
32 26 21
28 22 18
29 22 18
25 20 16
26 20 15
22 17 14
23 18 13
20 15 12
21 16 12
19 14 10
%Lamp
58.7
28.7
87.4
Candlepower
Degree
CP
0
954
10%
0%
50 30 10
0
5
951
15
881
61 59 57
54
25
943
53 50 47
45
35
1150
46 43 40
37
45
1307
41 37 34
31
55
727
37 32 29
27
65
336
33 28 25
23
75
291
30 25 22
20
85
287
27 23 19
17
90
274
25 20 17
15
95
267
23 18 15
14
105
255
115
222
125
156
135
66
145
27
155
26
Candlepower
Degree
CP
10%
0%
0
158
5
176
50 30 10
0
15
275
56 54 52
49
25
350
48 44 42
38
35
450
41 37 34
31
45
481
36 31 28
25
55
397
31 27 23
21
65
304
28 23 20
17
75
201
25 20 17
15
85
185
23 18 15
13
90
181
21 16 13
11
95
169
19 15 11
10
105
153
115
129
125
96
135
55
145
29
155
21
Candlepower
Degree
CP
10%
0%
0
385
5
388
50 30 10
0
15
409
50 48 46
42
25
521
41 38 35
32
35
783
35 31 28
25
45
915
30 26 23
20
55
904
27 22 19
16
65
782
24 19 16
14
75
611
21 17 14
11
85
416
19 15 12
10
90
402
18 13 10
8
95
365
16 12
9
7
105
327
115
308
125
289
135
262
145
234
155
178
8
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