Indoor air quality of building occupant is a basis determinant of healthy life and people’s well-being, comfort and productivity of occupants. The interactions between the site, climate, building system, construction techniques, contaminant source and occupants are the factors that affect the quality of indoor air. For example, hazardous compounds released from human activities indoors such as combustion of fuels for cooking, emission of toxic gas from construction materials and indoor equipments (Norhidayah et al., 2013). IAQ is the major contribution factor in determines IEQ level. There are several of pollutants gaseous, which are the main building environment pollutants. The following are carbon monoxide, radon and daughters, formaldehyde,…show more content… A poor quality in lighting can cause fatigue, drowsy, nausea, eye irritation and many more. This poor lighting is happen because of excessive lighting or insufficient of lights (Ghodish, 1995).
For daylighting, it have been a decades of closing off buildings from the outside world starting in the mid-1900s, the benefits of daylight and views are becoming more clear. The benefit of daylighting is it produces better well-being at all levels, whether for student, office worker or shopper. The benefits of daylight on productivity can measured in a number of ways, including absenteeism rates, retail sales and student test scores. It also stated the benefits of daylighting are to improve worker satisfaction, mood, and productivity.
Recent research has stressed the effect of daylight on human health. According to the U.S. Environmental Protection Agency, humans in modern cities spend upwards of 90 percent of their lives indoors. If they are occupying statically, perhaps stagnantly, lit environments, they can become isolated with the natural outdoor cycles and variation of illumination levels (Boyce,