In addition to all other building, furnishing, physical space, and equipment requirements specified in this chapter:(1) All exits must be visible. This may be provided by lighted exit signs or by lighted exits (such as a hall light or lamp, which lights the exit path and door);(2) You cannot count a window as one of the child-care center's required fire exits;(3) Each child 18 months and older must be provided a cot, bed, or mattress that is waterproof or washable and developmentally appropriate;(4) Children under the age of 18 months must be provided with a crib for nighttime sleeping; and(5) Boys and girls six years old or older must have separate sleeping and dressing areas.