Building Code Definitions


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R

radiocommunications

has the same meaning as in section 2(1) of the Radiocommunications Act 1989

reasonably visible

, in relation to a specified feature, and for the purposes of Clause F6, means that the specified feature is visible to a person who—
(a) is 10 metres from it, or the greatest distance from it that it is possible to go in the open space surrounding it, whichever is the lesser; and 
(b) has sight that is not defective, or is corrected (for example, by an optical appliance)

relevant boundary

means the boundary of an allotment that is other property in relation to the building in question and from which is measured the separation between the building and that other property; and for the external wall of any building, the relevant boundary is the nearest of—
(a) a boundary of a freehold allotment, except that if the other property is a road, railway line, or public open space, the relevant boundary is the boundary on the far side of that other property; or 
(b) a boundary of a cross-lease or a company lease or a licence, except that if the other property is open space to which the lessee or licensee of the building in question has an exclusive right of access and occupation or to which 2 or more occupiers of the building in question have rights of access and occupation, the relevant boundary is the boundary on the far side of that other property; or 
(c) a boundary shown on a unit plan (but excluding a boundary between a principal unit and its accessory unit), except that if the other property is open space and is common property, the relevant boundary is the boundary on the far side of that other property

risk group a

, for the purposes of performance F6.3.4 and performance F6.3.5, means buildings—
(a) whose occupants are required to remain in the building until the main lighting system is restored; or 
(b) whose evacuation time is longer than 90 minutes

risk group b

, for the purposes of performance F6.3.4 and performance F6.3.5, means buildings—
(a) whose evacuation time is 30 minutes or longer but not longer than 90 minutes; or 
(b) whose occupant load is more than 1 000

risk group c

, for the purposes of performance F6.3.4, means buildings not in risk group A or risk group B