D.C. Mun. Regs. tit. 22-B, § 3811
3811.1 Each MHCRF shall have a fire exit that:
3811.2 If the area or floor served by a fire exit door is to be occupied, the door shall not be locked in a manner that would require a key to unlock the door from the inside or that would require more than thirty (30) seconds to unlock.
3811.3 Each MHCRF that has residents in sleeping rooms above the second floor, or which has more than eight (8) residents in sleeping rooms above the street level, shall provide:
3811.4 Each MHCRF shall comply with the requirements set forth in 12 DCMR §914.
3811.5 No MHCRF shall permit smoking in bedrooms.
SOURCE: Final Rulemaking published at 42 DCR 569, 579 (January 27, 1995).