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9.5.3.1.(2)
OS3
ObjectiveOS3 Safety in Use
Attribution
Application
Application 1: 
Areas in rooms or spaces over which ceiling height is not less than the minimum specified in Table 9.5.3.1., in residential buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].
Application 2: 
This also applies to dwelling units, in buildings to which Part 3 applies [see Sentence 1.3.3.2.(1) of Division A for application of Part 3], as stated in Sentence 3.7.1.1.(2).
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Intent
Intent 1: 
To limit the probability that an inadequate height in the path of access to, or egress from, the room will lead to collision with protrusions from ceilings, such as lighting fixtures, ceiling fans and low door heads, which could lead to harm to persons.
Intent 2: 
To limit the probability that, in an emergency, an inadequate height in the path of access to, or egress from, the room will lead to collision with protrusions from ceilings, such as lighting fixtures, ceiling fans and low door heads, which could lead to delays in the evacuation or movement of persons to a safe place, which could lead to harm to persons.
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