Specification Sheet

P87-AT WITH P8068-28
Report No. 98105
No. Lamps: 1 Type Lamp: 40A19 Total Lumens: 505
Fixture Efficiency: 57.1%
S/MH Ratio: 1.3
Single Fixture Data
Ceiling
Ht.(Ft.)
10% Values
Ft.-C Beam Dia.
Zero
Degrees
Ft.-C
50% Values
Ft.-C Beam Dia.
Ft.-C (Footcandles) are initial and measured 2'-6" from floor
16 0.1 37 0.6 0.3 18
14 0.1 32 0.8 0.4 15
12 0.1 26 1.2 0.6 13
10 0.2 21 2.0 1.0 10
8 0.4 15 3.7 1.8 7
Beam Angle - 108 Beam Angle - 67
Quick Calculator Charts
0 100 200 300 400 500
0
4
8
12
16
20
Initial Footcandles
2'6" from floor
Area per Fixture (sq. ft.)
Room Reflectances: 80% Ceiling, 50% Wall, 20% Floor
Ceiling Ht.= 9 ft.
Medium Room - RCR=5.0
120 to 200 square foot area
0 100 200 300 400 500
0
4
8
12
16
20
Initial Footcandles
2'6" from floor
Area per Fixture (sq. ft.)
Room Reflectances: 80% Ceiling, 50% Wall, 20% Floor
Ceiling Ht.= 10 ft.
Large Room - RCR=2.0
1500 to 2500 square foot area
5
15
25
35
45
55
65
75
85
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
DISTRIBUTION CURVE INTENSITY DATA
112
111
109
108
106
103
100
96
90
83
72
50
29
20
13
9
5
2
0
70 50 30 10 70 50 30 10 50 30 10 50 30 10 50 30 10 0
80 70 50 30 10 0
RW
RC
10
9
8
7
6
5
4
3
2
1
0
Effective Floor Cavity Reflectance 0.20
ZONAL CAVITY COEFFICIENTS OF UTILIZATION
68 68 68 68 67 67 67 67 64 64 64 61 61 61 58 58 58 57
63 61 59 57 62 60 58 56 57 56 54 55 54 53 53 52 51 50
58 54 50 48 57 53 50 47 51 48 46 49 47 45 47 46 44 43
53 48 44 40 52 47 43 40 45 42 39 44 41 39 42 40 38 37
49 43 38 35 48 42 38 34 41 37 34 39 36 34 38 35 33 32
45 39 34 30 44 38 33 30 37 33 30 36 32 29 35 32 29 28
42 35 30 27 41 34 30 26 33 29 26 32 29 26 31 28 26 25
39 32 27 24 38 31 27 23 30 26 23 29 26 23 29 25 23 22
36 29 24 21 35 28 24 21 28 24 21 27 23 21 26 23 21 20
34 26 22 19 33 26 22 19 26 22 19 25 21 19 24 21 19 18
32 24 20 17 31 24 20 17 24 20 17 23 19 17 23 19 17 16