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80% Ceiling; 50% Walls; 20% Floor
Room Surface Reflectances:
150 Watt A-21
2880 Lumens Per Lamp
RCR = 10 (Rm. Width - Mtg. Ht. above work plane)
RCR = 5 (Rm. Width - 2Mtg. Ht. above work plane)
RCR = 1 (Rm. Width - 10 x Mtg. Ht. above work plane)
Center To Center Distance Of Fixtures In Feet
Area Per Fixture In Square Feet
Initial Footcandles
13 141211
8
975 6 10
20015010050
60
50
40
30
20
20
15
90
60
3030
90°
Plane
0°
Plane
180°
Plane
Coefficients of Utilization
% Effective Ceiling Cavity Reflectance
80 70 50 30 10 0
Room Cavity Ratio
20% Floor Cavity Reflectance
50 30 10 50 30 10 50 30 10 50 30 10 50 30 10 0
.80 .78 .76 .78 .77 .75 .75 .74 .73 .73 .72 .71 .70 .69 .69 .68
.75 .73 .70 .74 .72 .70 .72 .70 .68 .69 .68 .67 .68 .66 .65 .64
.71 .68 .65 .70 .67 .65 .68 .66 .64 .66 .64 .63 .65 .63 .62 .61
.67 .63 .61 .66 .63 .61 .65 .62 .60 .63 .61 .59 .62 .60 .58 .58
.63 .59 .57 .62 .59 .56 .61 .58 .56 .60 .57 .55 .59 .57 .55 .54
.60 .56 .53 .59 .56 .53 .58 .55 .53 .57 .54 .52 .56 .54 .52 .51
.56 .52 .50 .56 .52 .49 .55 .52 .49 .54 .51 .49 .53 .51 .49 .48
.53 .49 .46 .52 .49 .46 .52 .48 .46 .51 .48 .46 .50 .48 .46 .45
.49 .46 .43 .49 .45 .43 .48 .45 .43 .48 .45 .43 .47 .44 .42 .41
.47 .43 .40 .46 .43 .40 .46 .42 .40 .45 .42 .40 .45 .42 .40 .39
1
2
3
4
5
6
7
8
9
10
% Wall Reflectance
ZONAL
DEG. 0 45 90 135 180 FLUX
0 1238 1238 1238 1238 1238
5 1297 1304 1282 1246 1218 121
15 1828 1690 1620 1455 1318 448
25 1859 1971 1834 1617 1362 814
35 940 954 938 831 751 560
45 165 157 140 105 83 102
55 4 4 4 3 3 3
65 1 1 1 1 1 1
75 1 1 1 1 1 1
85 0 0 0 0 0 0
90 0 0 0 0 0
ZONE LUMENS LAMP FIXT
0-30 1383 48.0 67.5
0-40 1943 67.5 94.8
0-60 2048 71.1 99.9
0-90 2050 71.2 100.0
90-180 0 0.0 0.0
0-180 2050 71.2 100.0
Zonal Summary
Candlepower Summary
ITL, Inc. test report No. 22532
Date: 10-26-77
Spacing Ratio = 1.3
Use quick calculator chart to determine spacing of luminaires for desired level of illumina-
tion. Conversion Factor: 100W A19 (Clear): F.C. X 0.60; (Gold): F.C. x 0.55 150W A21 (Gold):
F.C. x 0.90.
Calculite
®
Incandescent Open Downlight E7059
Page 2 of 2 6" Aperture A19 / A21 Horizontal Lamp
Lightolier a Genlyte Thomas Company www.lightolier.com
631 Airport Road, Fall River, MA 02720 • (508) 679-8131 • Fax (508) 674-4710
We reserve the right to change details of design, materials and finish.
© 2002 Genlyte Thomas Group LLC (Lightolier Division) • A0902
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