Steven R Winkel , FAIA, PE, an expert in building codes and regulations, is an architect and civil engineer managing the San Francisco office of The Preview Group, Inc. Winkel is the architect member of the California Building Standards Commission. A past national board member of The American Institute of Architects (AIA), he is on the board of directors of the National Institute of Building Sciences. David S. Collins , FAIA, has more than thirty years of experience in architecture, code interpretation, building code development, and building code consultation. An architect, Collins founded The Preview Group, Inc., an architectural practice specializing in providing regulatory solutions, in Cincinnati, Ohio, in 1986. The consultant for AIA's Codes Advocacy Program, Collins is past secretary of the AIA, past president of AIA Ohio, and recipient of the AIA Ohio Gold Medal. He has been assisted by Gregory Nicholls, AIA, a Preview Group partner, in book review and development. Steven P. Juroszek , AIA, is a professor in the School of Architecture at Montana State University. A registered architect, Juroszek assisted Frank Ching in authoring Design Drawing (Wiley). Francis D.K. Ching , Series Advisor, is a registered architect and Professor Emeritus at the University of Washington. He is the author or coauthor of numerous architecture and design books, including A Global History of Architecture; Architectural Graphics; Building Construction Illustrated; Architecture: Form, Space, and Order; A Visual Dictionary of Architecture; and Design Drawing, all published by Wiley. The International Code Council (ICC) is a nonprofit membership association dedicated to protecting the health, safety, and welfare of people by creating better buildings and safer communities. The mission of ICC is to provide the highest quality codes, standards, products, and services for all concerned with the safety and performance of the built environment. ICC is the publisher of the family of the International Codes (I-Codes), a single set of comprehensive and coordinated national model codes. This unified approach to building codes enhances safety, efficiency, and affordability in the construction of buildings. The Code Council is also dedicated to innovation, sustainability, and energy efficiency.