Tennessee Code Title 4. State Government § 4-24-303

(1) Using empty or unused rooms in the station.  In no event shall existing rooms, including, but not limited to, bedrooms, weight rooms, T.V. rooms, or other rooms utilized by the firefighters for relaxation or rest, be taken or redesignated for purposes of complying with this part;

(2) With regard to restrooms, shower rooms or locker rooms, using a male/female flip sign with locks on the door when the room is being utilized by either a male or female.  No restroom, shower room or locker room that is designated specifically for male or female may be used at any time by the opposite sex;

(3) With respect to sleeping arrangements created for the purpose of complying with this part, if it is not possible to have individual sleeping quarters, privacy for everyone shall be provided by installing individual cubicles in a room or rooms designated for sleeping with a curtain or screen blocking the entrance to each individual cubicle.  The cubicles shall contain at least a bed, desk, lamp and a sufficient number of lockers to provide each firefighter on a shift with a designated, private area to rest or sleep.