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UNITS 5
FEET
FROM
WALL
Units 3 Feet
From Wall
Distance From Ceiling (FT.)
1192019 171717 161516 151315 141114 13 913
2262726 232423 211921 191719 181518 171217
3293029 262626 232223 211821 201620 191419
4323232 282928 252625 222222 202020 191719
5333633 303130 272527 252125 231823 231523
6343534 303030 272727 242324 232023 221722
7333533 293029 262726 232223 222022 211721
8 32 35 32 28 29 28 25 26 25 22 22 22 20 20 20 19 17 19
9293229 252725 222522 192219 171917 161716
10 27 30 27 23 26 23 20 23 20 18 20 18 16 18 16 15 17 15
11 24 26 24 21 24 21 19 20 19 17 18 17 15 17 15 13 15 13
12 21 24 21 19 21 19 17 17 17 15 16 15 13 15 13 10 14 10
13 19 22 19 17 19 17 16 16 16 14 14 14 12 14 12 9 13 9
14 17 20 17 15 15 15 14 13 14 13 12 13 10 12 10 8 11 8
Distance From Ceiling (FT.)
1444144 372937 342434 331833
2596259 494049 433243 412441
3677467 575057 503550 472647
4727272 585358 504050 463246
5677367 535353 444444 403440
6606260 475047 384238 333533
7516251 414241 323832 273127
8415141 343534 273227 232723
9364536 313131 242824 212321
10 32 36 32 27 29 27 23 25 23 20 21 20
11 28 32 28 25 26 25 21 23 21 19 19 19
12 26 29 26 22 24 22 19 21 19 18 18 18
13 23 26 23 22 23 22 18 20 18 17 16 17
14 21 25 21 20 21 20 16 20 16 15 15 15
Coefficients of Utilization
% Effective Ceiling Cavity Reflectance
80 70 50 30 10 0
ROOM CAVITY RATIO
50 30 10 50 30 10 50 30 10 50 30 10 50 30 10 0
.81 .80 .78 .80 .78 .77 .77 .75 .74 .74 .72 .72 .71 .70 .70 .68
.76 .73 .71 .75 .72 .70 .72 .70 .69 .70 .69 .67 .68 .67 .67 .65
.71 .67 .66 .70 .67 .66 .68 .67 .66 .67 .65 .64 .67 .64 .62 .61
.67 .64 .62 .67 .63 .61 .65 .63 .60 .64 .62 .60 .63 .60 .59 .56
.64 .59 .57 .63 .59 .56 .62 .59 .53 .60 .58 .56 .59 .57 .55 .54
.60 .56 .53 .59 .56 .53 .59 .56 .52 .57 .55 .52 .57 .54 .52 .51
.56 .52 .49 .56 .52 .49 .55 .51 .49 .54 .51 .48 .53 .50 .48 .48
.53 .49 .47 .52 .48 .47 .52 .48 .47 .51 .48 .46 .50 .48 .46 .45
.49 .46 .43 .49 .46 .43 .48 .45 .42 .48 .45 .42 .47 .44 .42 .41
.47 .43 .39 .46 .42 .39 .46 .42 .39 .45 .42 .39 .45 .42 .39 .38
1
2
3
4
5
6
7
8
9
10
% Wall Reflectance
20% Floor Cavity Reflectance
Conversion Factor:
200W A-23 (Clear) and 150W A-21 (Clear): F.C. x 1.0;
300W PS-25, 200W A-23 and 150W A-21 (Gold): F.C. x 0.9
Distance From Ceiling (FT.)
1262826 232323 211921 201520 191319
2363836 313231 272427 252025 241824
3434143 373537 332633 312231 302030
4464746 404140 362936 342334 322132
5504750 414141 373237 342634 322532
6494849 424142 373437 342734 322534
7454645 374037 323332 282928 262626
8404140 343634 283128 252725 222522
9373537 293229 242824 212521 182418
10 32 34 32 27 29 27 22 26 22 19 22 19 17 21 17
11 29 31 29 25 25 25 21 22 21 18 20 18 16 16 16
12 26 28 26 22 23 22 19 21 19 16 18 16 15 16 15
13 24 25 24 20 22 20 17 19 17 16 16 16 14 15 14
14 22 22 22 18 19 18 16 17 16 15 14 15 14 13 14
UNITS 4
FEET
FROM
WALL
DOUBLE
WALLWASHER
WALL
WALL
WALL
WASHER
INSIDE CORNER
WALLWASHER
WALL
WALL
WALL
6'
6'
3'
3
'
47 f.c.
26 f.c.
WALL WASH SIDE
DOWNLIGHT SIDE
Candlepower
Distribution
Downlight Spacing
Ratio = 1.3
For even wall washing
use a maximum of 2 to 1
spacing (distance
between fixture ÷ dis-
tance to wall).
3' 4' 5' 6'
4'
5' 6'
7' 8'
Footcandles on wall from multiple
units Clear cone, 300W PS-25
EXAMPLE: With multiple clear cone
units, using 300W PS-25 lamps, located
3' from wall and 6' on center, (matching
downlights 6' on center), the illumination
on the wall 3' down from the ceiling is
47 f.c. beneath fixtures and 26 f.c.
between fixtures.
5'
6' 7' 8' 9' 10'
Footcandle values are averaged and rounded off and tables are based on a minimum of five units. Conversion Factors: 300W PS-25 units with gold cone,
F.C. x 0.90. 200W A-23 units: clear cone, F.C. x 0.65; gold cone, F.C. x 0.55. 150W A-21 units: clear cone, F.C. x 0.45; gold cone, F.C. x 0.40.
Calculite
®
Incandescent Open Wall Washer T7032
7 3/8” Aperture A21 / A23 / PS25
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
Job Information Type: