17-452

floor cavity ratio (US)

number representative of the geometry of the part of a room between the floor and the utilization plane, used in calculation of utilization factor or utilance

Unit: 1

NOTE The floor cavity ratio is given by the formula

       

where a and b are the dimensions of the sides of the room and hf is the distance from the floor to the utilization plane.

See also "floor cavity index", term used outside the US

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