Specifications

P87-AT WITH P8060-28
Report No. 98196
No. Lamps: 1 Type Lamp: 75PAR30L/FL-GE Total Lumens: 990
Fixture Efficiency: 34.3%
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 39 0.6 0.3 17
14 0.1 33 0.9 0.4 15
12 0.1 27 1.3 0.6 12
10 0.2 21 2.1 1.0 9
8 0.4 16 3.8 1.9 7
Beam Angle - 110 Beam Angle - 65
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
116
115
114
112
108
104
99
93
86
79
71
62
53
43
34
24
15
6
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
41 41 41 41 40 40 40 40 38 38 38 37 37 37 35 35 35 34
37 36 34 33 36 35 33 32 33 32 31 32 31 30 31 30 29 29
34 31 29 27 33 30 28 26 29 27 26 28 26 25 27 26 24 24
31 27 24 22 30 27 24 22 26 23 21 25 23 21 24 22 21 20
28 24 21 19 27 24 21 18 23 20 18 22 20 18 21 19 18 17
26 21 18 16 25 21 18 16 20 18 16 20 17 16 19 17 15 15
24 19 16 14 23 19 16 14 18 16 14 18 15 14 17 15 13 13
22 17 14 12 22 17 14 12 17 14 12 16 14 12 16 14 12 11
21 16 13 11 20 16 13 11 15 13 11 15 12 11 14 12 11 10
19 15 12 10 19 14 12 10 14 11 10 14 11 10 13 11 10 9
18 13 11 9 18 13 11 9 13 11 9 13 10 9 12 10 9 8