fire-isolated-stairway
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fire-isolated stairway
HB50
<1> stairway within a fire-resisting shaft, including its floor and roof or top enclosing structure, capable of being isolated from other portions of a building or structure to provide safe egress to a road or open space in the event of fire
<2> means a stairway within a fire-resisting shaft and includes the floor and roof or top enclosing structure
<2> means a stairway within a fire-resisting shaft and includes the floor and roof or top enclosing structure
Source - BCA Vol 1 terminology