The objective of this publication is to provide basic information about the nature and characteristics of tensioned fabric structures. Its target audience includes architects, engineers, builders, owners, users, students, and libraries which serve those groups. In the first chapter, a historical overview is presented. Next, the somewhat unique nature of the design and construction process is presented and special characteristics of these structures are discussed. The publication then outlines the properties and behaviour of the most commonly used membrane materials. The basics of structural geometrics, form and design methods are presented, followed by chapters on connection details and fabrication and construction. A glossary of terms pertinent to tensioned fabric structures concludes the document.