1231.2.10 Exercise Area
An outdoor exercise area or areas must be provided in every Type II and Type III facility. The minimum clear height must be 15 feet (4572 mm) and the minimum number of square feet of surface area will be computed by multiplying 80 percent of maximum rated population by 50 square feet (4.7 m2) and dividing the result by the number of one-hour exercise periods per day.
There must be at least one exercise area of not less than 600 square feet (55.7 m2). The design shall facilitate security and supervision appropriate to the level of custody.