NCC 2016 Volume One
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Part F3 Room Heights (Performance Requirements)

Part F3 Room Heights (Performance Requirements)

FP3.1

Vic FP3.1

A habitable room or space must have sufficient height that does not unduly interfere with its intended function.

Sufficient height

FP3.1 adds the term ‘sufficient’ when describing the required level of performance. The required height must be considered in light of intended function.

The Deemed-to-Satisfy Provisions specify different heights for different room or building types.

Measurement of height

To achieve the requisite level of performance, it is necessary, when measuring the height of a ceiling, to make the measurement:

  • from the floor to the underside of the ceiling lining; or
  • if there is no ceiling lining, to the underside of the floor or roof above.

Exposed beams are permitted to encroach below the minimum ceiling height, but care should be taken to make sure that adequate height is still available.

In the case of stairs and ramps, the measurement is taken vertically from the nosing line of the stairway treads or the floor surface of the ramp, landing or the like, with no overhead projection encroachments permitted.