The course is an introduction to the structural concepts available to the designer to imagine and ultimately design long-span, large-volume architecture. The desire to create enclosure space that is protected from the external environment has continued to evolve, pressing for greater span and more imaginative solution. Scale and geometric complexity create significant challenges unique to this sub-set of building typologies. Knowledge of the concepts, theirs strengths and the associated challenges in both design and construction, will enable the design decision-making process to arrive at appropriate solutions.