Research Article
Effects of Lighting Quality on Working Efficiency of Workers in Office Building in Tanzania
Table 3
The measure average offices illuminance level and uniformity.
| | Office | Average horizontal task illuminance level (lux) | Horizontal illuminance uniformity ratio (Ehmin/Ehavg ) | Specified minimum task illuminance and uniformity |
| | RM1 | Head of the department | 196 | 0.332 | 500 lux for the tasks involving writing, reading, and typing, and 0.8 of the illuminance uniformity ratio | | Assistant Head of the department | 443 | 0.336 | | Secretary office | 105 | 0.524 | | RM2 | 84 | | 0.488 | | RM3 | 198 | | 0.747 | | RM4 | 193 | | 0.834 |
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RM = room; Ehmin = minimum desk illuminance; Ehavg = average desk illuminance.
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