D.C. Municipal Regulations (Last Updated: September 13, 2017)

Section 14-1310. CEILING HEIGHT IN HIGH DENSITY USE ROOMS

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1310.1A high density occupancy room shall have a ceiling height of eight feet (8') or more throughout the room, except as otherwise provided in this section.

1310.2Under beams, pipes, ducts, and other construction projections from the ceiling, there shall be a minimum clear head room of six feet, eight inches (6'8") in each high density occupancy room.

source

The Housing Regulations of the District of Columbia, 5G DCRR § 7302, Commissioners’ Order 53-1503 (August 11, 1955), as amended by Commissioners’ Order 63-1354 (June 6, 1963), 9 DCR 276 (June 24, 1963).

                    
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