Collapse zone
Area beneath a wall in which the wall is likely to land if it loses structural integrity
Curtain wall
Non-bearing exterior wall attached to the outside of a building with a rigid steel frame. Usually the front exterior wall of a building intended to provide a certain appearance
Gypsum
Fire resistant material used for gypsum plaster and wallboard
HVAC system
Mechanical system used to provide environmental control within a structure, and the equipment necessary to make it function; usually a single, integrated unit with a complex system of ducts throughout the building
Structural collapse
Structural failure of a building or any portion of it resulting from a fire, snow, wind, water, or damage from other forces
Veneered walls
Walls within a surface layer of attractive material laid over a base of a common material