Humans spend 90% of their time in buildings According to a study by the World Health Organization, humans spend an average of 90% of their lives in buildings, including homes, offices, schools, hospitals, and shopping malls. This shows the importance of the living environment for human health and quality of life. Ensuring a comfortable and safe living environment A comfortable and safe living environment is one that meets the health, mental, and physical needs of humans. Specifically, a comfortable living environment must ensure the following factors: Air quality: Indoor air must be clean, free of pollutants, and contain enough oxygen to breathe. Natural lighting: Natural lighting helps humans feel comfortable, relaxed, and improve their health. Temperature and humidity: The temperature and humidity in the building must be appropriate to the needs of humans, avoiding too hot or too cold. Sound environment: The sound environment in the building must be quiet, avoiding noise, affecting health and mental health. Comfort is a subjective concept Comfort is a feeling of satisfaction and ease with the environment we are exposed to. Comfort in a building includes the four factors listed above. All depend, in part, on the objective conditions of the environment and the rest, on the physiological...