We have a room with 18 luminaires. These luminaires will be cleaned once per year at a total cost of $10 per luminaire for labor and consumables (rags, cleaning solution, scissors lift, etc. Every six years the luminaires will be re-lamped at a total cost of $60 per luminaire for lamps and other costs (labor, equipment, new lamps, etc) What is the annual cost of cleaning and re- lamping? Table 1: Coefficient of Utilization - All floor reflectances = 20% RCC- RCC- RCC- RCC- RCC- RCC- RCC- RCC - RCR 80%, RW 80%, RW 80%, RW 70%, RW 70%, RW 70%, RW 50%, RW 50%, RW - 70% -50% -30% - 70% -50% -30% -50% -30% 0.97 .97 .97 .94 .94 .94 .90 .90 1.89 .86 .82 .87 .84 .81 .80 .78 2.82 .76 .71 .80 .74 .70 .71 .68 3.75 .67 .61 .73 .66 .61 .64 .59 4.69 .60 .54 .68 .59 .53 .57 .52 5.64 .54 .47 .62 .53 .47 .52 .46 6.59 .49 .42 .58 .48 .42 .47 .41 7.55 .45 .38 .54 .44 .38 .43 .37 8.51 .41 .34 .50 .40 .34 .39 .34 9.48 .38 .31 .47 .37 .31 .36 .31 10.45 .35 .29 .44 .34 .28 .34 .28

Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Question
We have a room with 18 luminaires. These luminaires will be cleaned once per year at a total
cost of $10 per luminaire for labor and consumables (rags, cleaning solution, scissors lift, etc.
Every six years the luminaires will be re-lamped at a total cost of $60 per luminaire for lamps
and other costs (labor, equipment, new lamps, etc) What is the annual cost of cleaning and re-
lamping?
Table 1: Coefficient of Utilization - All floor
reflectances = 20%
RCC-
RCC-
RCC-
RCC-
RCC-
RCC-
RCC-
RCC -
RCR 80%, RW 80%, RW
80%, RW
70%, RW
70%, RW
70%, RW
50%, RW
50%, RW
- 70%
-50%
-30%
- 70%
-50%
-30%
-50%
-30%
0.97
.97
.97
.94
.94
.94
.90
.90
1.89
.86
.82
.87
.84
.81
.80
.78
2.82
.76
.71
.80
.74
.70
.71
.68
3.75
.67
.61
.73
.66
.61
.64
.59
4.69
.60
.54
.68
.59
.53
.57
.52
5.64
.54
.47
.62
.53
.47
.52
.46
6.59
.49
.42
.58
.48
.42
.47
.41
7.55
.45
.38
.54
.44
.38
.43
.37
8.51
.41
.34
.50
.40
.34
.39
.34
9.48
.38
.31
.47
.37
.31
.36
.31
10.45
.35
.29
.44
.34
.28
.34
.28
Transcribed Image Text:We have a room with 18 luminaires. These luminaires will be cleaned once per year at a total cost of $10 per luminaire for labor and consumables (rags, cleaning solution, scissors lift, etc. Every six years the luminaires will be re-lamped at a total cost of $60 per luminaire for lamps and other costs (labor, equipment, new lamps, etc) What is the annual cost of cleaning and re- lamping? Table 1: Coefficient of Utilization - All floor reflectances = 20% RCC- RCC- RCC- RCC- RCC- RCC- RCC- RCC - RCR 80%, RW 80%, RW 80%, RW 70%, RW 70%, RW 70%, RW 50%, RW 50%, RW - 70% -50% -30% - 70% -50% -30% -50% -30% 0.97 .97 .97 .94 .94 .94 .90 .90 1.89 .86 .82 .87 .84 .81 .80 .78 2.82 .76 .71 .80 .74 .70 .71 .68 3.75 .67 .61 .73 .66 .61 .64 .59 4.69 .60 .54 .68 .59 .53 .57 .52 5.64 .54 .47 .62 .53 .47 .52 .46 6.59 .49 .42 .58 .48 .42 .47 .41 7.55 .45 .38 .54 .44 .38 .43 .37 8.51 .41 .34 .50 .40 .34 .39 .34 9.48 .38 .31 .47 .37 .31 .36 .31 10.45 .35 .29 .44 .34 .28 .34 .28
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