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9.20.10.1.(3)
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Application
Application 1: 
Spacing of lateral supports for above-ground masonry cavity walls, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9]:
  • where the wall height above the foundation wall does not exceed 11 m, and
  • in which the roof or floor system above the first storey is not of concrete construction.
Exceptions: 
except as stated in Sentence 9.20.1.1.(2), which applies to buildings other than described above, or where the masonry is designed for specified loads on the basis of ultimate and serviceability limit states.
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Intent
Intent 1: 
To clarify the protocol for measuring the width of cavity walls for the purposes of determining the required spacing of lateral supports.
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