interstitial floorJoe Segen2016-12-19T06:01:29+00:00
Definition An unoccupied floor in a large building–e.g., a hospital, which is located between the building’s occupied floors.
Such spaces are useful when the building’s mechanical, electrical and hydraulic systems are complex and changing ducts, wiring and other features on the primary floors may be required in the future. Interstitial floors have a minimum ceiling height and house critical utilities–e.g., air conditioning units, water and drain pipes, pneumatic tubes, electrical and telephone line conduits. Interstitial floors and utility corridors simplify the alteration and servicing of utilities as they minimise the need to tear out walls and ceilings of existing structures.
Synonym Interstitial space
MLO 4/95, p22