David Kent Ballast, FAIA, NCARB, CSI, is the owner of Architectural Research Consulting, a firm offering information and management services to architects, interior designers, and the construction industry. Mr. Ballast taught interior construction and other courses for twenty years at Arapahoe Community College. A licensed architect in Colorado and an NCIDQ certificate holder, Mr. Ballast has authored many books published by PPI on design topics and ARE review.
Steven E. O’Hara, PE, is a professor of architectural engineering in the School of Architecture at Oklahoma State University. Professor O’Hara earned bachelor of science and master of architectural engineering degrees from Oklahoma State University. He is a licensed engineer in Oklahoma.