Chapter 13: Indoor Air Quality, Mitigating CO₂ Concentration in Classrooms Using Adjacent Corridors and Atriums

This chapter studies the classroom’s indoor air quality (IAQ) during the preparatory (freshmen) year at Jeddah. An existing and active building was used as a case study. The variables affecting IAQ were measured and analyzed by installing sensors to measure and record these variables in this classroom. After that, research was done to determine the optimal range of these variables and compare them to check whether these results were within the acceptable range of each variable. The results show that it is important to propose improvement measures to reduce CO₂ concentration and ensure thermal comfort. Occupants need to realize that the quality of the indoor environment is important for their health, comfort, and efficiency.