The aim of this book is to present an orderly survey of high-rise building structures. The organization of various building skeleAtons is derived from the anatomy of their structural components. Actually built or proposed tall structure systems are compared in plan, elevation, and three-dimensional view. The geometrical order of the building structure is interpreted in terms of its response to external force action, which is rather complex as the related literature indicates. This book translates this comAplex field of structural engineering into simplified language unAderstandable by anyone concerned with the construction of buildings. This book addresses primarily the architect, the principal form giver of the building, who must develop the self-confidence to express the strength and inherent beauty of structure and materials.This book is intended as a text for a, structure course for college students of architecture or building science; a background in statics and design of concrete and steel elements is required. The many examples of building structures should make the book a helpful reference to studio courses dealing with the design of tall buildings. Furthermore, the book may assist the young engineer, faced for the first time with the design of a building, in developing an intuitive feeling for the structural behavior of the building as a whole. The presentation of actual buildings on a comparative basis (i.e., like a catalog), together with references, should be an asset to the structural engineer and to the architectural designer in practice.