D.C. Mun. Regs. tit. 12, r. 12-J202
Strike the definitions for ADDITION, EXISTING BUILDING, and WORK AREA in the International Existing Building Code in their entirety and insert a new definition for each in the Existing Building Code in their place to read as follows:
ADDITION. An extension or increase in the building area, aggregate floor area, number of stories or height of a building or structure.
EXISTING BUILDING. Any building or structure that has been erected and legally occupied (excluding buildings occupied pursuant to a temporary certificate of occupancy).
WORK AREA. That portion or portions of a building consisting of all reconfigured spaces as indicated on the construction documents. Work area excludes spaces reconfigured solely to facilitate mechanical, electrical, plumbing, fire protection or fire alarm systems. Work area excludes newly installed or reconfigured mechanical, electrical, plumbing, fire protection or fire alarm systems. Work area excludes other portions of the building where incidental work entailed by the intended work must be performed and portions of the building where work not initially intended by the owner is specifically required by this code.
Insert a new definition, FIRE RESISTANCE RATING, in Section 202 of the Existing Building Code to read as follows:
FIRE RESISTANCE RATING. The period of time a building element, component or assembly maintains the ability to confine a fire, continues to perform a given structural function, or both, as determined by the tests, or the methods based on tests, prescribed in Section 703 of the Building Code. The fire resistance rating of existing building assemblies which have not been rated in accordance with Section 703 of the Building Code shall be determined in accordance with the procedures set forth in Guidelines on Fire Ratings of Archaic Materials and Assemblies, published in the Existing Building Code as Resource A.
D.C. Mun. Regs. tit. 12, r. 12-J202