Assessment of Luminosity Levels, Distributions, and Uniformity in Offices, Laboratories, and Lecture Theatres: Case Study of Federal University of Health Sciences, Otukpo

An interesting area of research that is of great concern in work places is the levels of luminosity, distributions, and uniformity of indoor spaces. Poor indoor lighting has been reported to have negative impacts on human health, comfort, performance, and productivity. Therefore, the need to create comfortable, productive, and healthier environments cannot be overemphasized. In this study, we attempt to assess the luminosity in indoor spaces at Federal University of Health Sciences Otukpo; in order to assess the existing lighting conditions. The luminosity levels at offices, laboratories, and lecture theatres were measured in the morning (8 am - 11:50 am) and afternoon (1 pm - 4:30 pm) in February, 2024 using Lux Meter (model: 1010B). Descriptive statistics was employed in data analysis. Results revealed that the existing lighting conditions in the offices can be categorised as dim, satisfactory, and good. This could be upgraded to bright and glaring, depending on the occupant’s task. About 60 % of the sampled laboratories are up to the required standard, while 40 % need to be upgraded. Measured luminosity in the surveyed indoor spaces was not evenly distributed. Furthermore, the illuminance uniformity was determined. We hereby recommended that luminosity levels in most of the surveyed indoor spaces be upgraded to the required standard. The findings of this study suggest that besides the measurement time, month and season of the year could also affect illuminance of indoor spaces. The observed luminosity has implication on the comfort, health, productivity, and performance of both students and staff.