Resident rooms

1. Grade level. No resident shall be housed in a room unless a portion of it is at or above grade level and no resident room floor shall be more than thirty inches [76.2 centimeters] below the adjacent grade. 2. Floor area. a. In single resident rooms the least dimension free of fixed obstructions shall not be less than eighty square feet [7.43 square meters]. b. Multibed rooms shall have as a minimum floor space, seventy-five square feet [6.97 square meters] of space free of fixed obstructions per bed. There shall be no more than four beds per room. c. At least one water closet, lavatory, and tub or shower shall be provided for each five residents. d. Window sills shall not be higher than three feet [91.44 centimeters] above the floor and shall be above grade. Each resident's room shall be an outside room with a satisfactory amount of natural light. The area of the glazing material in the windows shall not be less than one-tenth of the floor area of the room served by them. e. If both males and females are housed in the same facility, separate water closets, lavatories, and tubs or showers will be required for both sexes.