Application of multi criteria decision analysis in environmental and civil engineering The purpose of this book is to provide a resource for students and researchers that includes current application of a multi criteria decision making theory in various fields such as: environment healthcare and engineering. In addition practical application are shown for students manually. In real life problems there are many critical parameters (criteria) that can directly or indirectly affect the consequences of different decisions. Application of a multi criteria decision making theory is basically the use of computational methods that incorporate several criteria and order of preference in evaluating and selecting the best option among many alternatives based on the desired outcome.