Every occupied space shall be ventilated by what means?

Ventilation in occupied spaces is crucial for maintaining air quality and ensuring the comfort and health of the occupants. The correct answer is based on the understanding that every occupied area must have a means of introducing fresh air and exhausting stale air to promote proper air circulation.

Natural ventilation refers to the process of allowing outdoor air to enter an interior space through windows, vents, or other openings without mechanical assistance. This type of ventilation relies on natural forces such as wind and temperature differences to facilitate airflow. On the other hand, mechanical ventilation uses fans and air handling systems to actively circulate and filter the air, ensuring a consistent supply of fresh air regardless of external conditions.

By combining both natural and mechanical methods, spaces can be adequately ventilated to meet various needs, such as enhancing air quality, reducing humidity, and providing thermal comfort. This dual approach enhances flexibility in design and can be adapted for different building types and climates. Ensuring proper ventilation through these means is essential for the health and comfort of inhabitants, making it a critical requirement in building codes and practices.