The following words and phrases, whenever used in this division, shall be construed as defined in this section. Words and phrases not defined here shall be construed as defined in Division 2 of this Code.
CONCRETE BUILDING is a building having concrete floors and/or roofs, either with or without beams, supported by concrete walls and/or concrete columns, and/or concrete frames with or without masonry infills, or any combination thereof.
DUPLEX is a building containing only two single-family dwelling units.
DWELLING UNIT shall include any individual residential unit within either an R-1 or R-2 occupancy building, including a mixed-occupancy building when part of it is either an R-1 or R-2 occupancy. A dwelling unit shall include the area of a building that is occupied as a dwelling unit, whether the building is approved or unapproved for residential use.
QUALIFIED HISTORICAL BUILDING is any building designated or currently in the process of being designated as a "qualified historical building" as defined in Part 8, Title 24 of the California Code of Regulations.
MASONRY INFILL is the unreinforced or reinforced masonry wall construction within a reinforced concrete frame.
RETROFIT is an improvement of the lateral force-resisting system by alteration of existing structural elements or addition of new structural elements.
SINGLE-FAMILY DWELLING is any building with one dwelling unit which contains living facilities, including provisions for sleeping, eating, cooking and sanitation, as required by this Code.