As a result of changes in sentencing patterns, including criminalization of offenses previously handled outside the criminal justice system, Ohio is faced with a large number of minimum and maximum security inmates and fewer medium security inmates. This changing population will require that future operations be based on a fair and objective inmate classification system and that security and discipline is adequate to the degree of risk. The increased number of long-term inmates will require space for educational, industrial, and training programs and programs for special-needs offenders. In addition, the design should maximize staff-inmate interaction in a relaxed and nonthreatening environment that permits effective supervision through casual and nonconfrontational approaches. Finally, staff must be adequately trained. These principles have been incorporated into Ohio's approach to prison design and construction. In addition, the approach emphasizes keeping the system simple and flexible for future expansion, minimizing future maintenance costs, and creating a secure perimeter and a relaxed inner compound. 2 photographs.