Probability-Based Design in Ventilation

This paper describes a concept of probability-based design and its application in the field of ventilation. The path of probability-based design is followed with the help of examples concerning the air change rate caused by natural and mechanical forces. The object of this study is a low-rise building situated in two different climatic zones. Evaluation of the probability of failure gives a background for probabilistic design. The limit state approach based on the FORM (First-Order Reliability Method) technique is proposed as an effective tool for probabilistic approximations and reliability analysis. The possibility of the risk- or reliability-based analysis of different design options is discussed.