Specifications

P87-AT WITH P8009-60
Report No. 98183
No. Lamps: 1 Type Lamp: 75PAR30L/FL-GE Total Lumens: 990
Fixture Efficiency: 69.2%
S/MH Ratio: 1.1
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 0.2 35 1.6 0.8 15
14 0.2 29 2.2 1.1 13
12 0.3 24 3.2 1.6 11
10 0.5 19 5.1 2.5 8
8 0.9 14 9.4 4.7 6
Beam Angle - 104 Beam Angle - 59
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
6
12
18
24
30
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
285
283
277
267
252
234
213
191
169
148
129
111
94
77
60
44
29
17
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
82 82 82 82 81 81 81 81 77 77 77 74 74 74 71 71 71 69
75 72 69 66 73 70 68 65 67 65 63 65 63 61 62 61 59 58
69 63 58 54 67 62 57 54 59 56 52 57 54 51 55 52 50 49
63 56 50 46 61 54 49 45 52 48 44 50 47 44 49 46 43 41
58 49 43 39 56 49 43 39 47 42 38 45 41 38 44 40 37 36
53 44 38 34 52 44 38 34 42 37 33 41 36 33 40 36 32 31
49 40 34 30 48 40 34 30 38 33 29 37 33 29 36 32 29 27
46 37 31 26 45 36 30 26 35 30 26 34 29 26 33 29 26 24
43 33 28 24 42 33 27 24 32 27 23 31 27 23 30 26 23 22
40 31 25 21 39 30 25 21 30 25 21 29 24 21 28 24 21 20
38 29 23 20 37 28 23 20 28 23 19 27 22 19 26 22 19 18