This course presents principles and criteria for the technical design of the detail. These principles and criteria will be applied to the development of details, found in a variety of conditions in a building. For each condition, approaches toward detailing and performance specification are discussed, and design strategies developed. Students will critically analyse case studies of the performance of existing details. The communication of detail design by the designer to the constructor, and the role of critical analysis in drawing review in ensuring appropriateness of details are discussed.