Which procedures are outlined in ASHRAE 62.1 for ventilation?

The Ventilation Rate Procedure and Indoor Air Quality Procedure are key methods outlined in ASHRAE 62.1 for ensuring adequate ventilation in indoor environments. The Ventilation Rate Procedure sets specific airflow rates based on the occupancy density and activity levels in a space, which helps to maintain a sufficient level of fresh air and control contaminants. This procedure is essential for meeting the minimum ventilation requirements that contribute to occupant comfort and health.

The Indoor Air Quality Procedure, on the other hand, focuses on managing the overall quality of the air within a building. It allows for a more flexible approach by enabling the use of alternative means to achieve satisfactory indoor air quality through various strategies, such as air cleaning or pollutant source control, in addition to ventilation. This dual approach is vital in comprehensive environmental management within buildings, allowing for improved health outcomes while accommodating the specific needs of different spaces.

In comparison, the other choices present procedures that are either not specifically defined in ASHRAE 62.1 or don't fully encompass the critical principles of ventilation addressed in the standard. The outlined methods ensure that both the quantity and quality of ventilation are effectively managed to promote a healthy indoor atmosphere.