This book is dedicated to students of architectural and structural engineering. It focuses on identifying and explaining the more basic, rather than detailed issues of conceiving and manipulating structural design options. It does so through a unique overall approach that emphasizes a total-to-subsystem hierarchy for learning about and projecting structural thinking into architectural design, and vice versa. It is unique because it makes it possible to introduce 1) structural design principles as basic form determinants, and 2) simplified methods for approximate analysis in both conceptual and specific terms.