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9.20.9.4.(8) | Application | Intent |
| OH1 | OS2 | OS1 | OH4 | OP2 | OS3 |
| Objective | OH4 Vibration and Deflection Limitation |
| Attribution | |
| Application | Application 1: Maximum spacing, within 100 mm of the
bottom of the inner assembly, of individual wire ties that tie together above-ground
masonry cavity walls and floor or roof assemblies,
where the cavity extends below the assemblies, in buildings to
which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application
of Part 9]:
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 limit the probability of:
This is to limit the probability of cracking
or buckling of cavity wall constructions in areas that typically experience
higher levels of lateral stress, such as near floor or roof assemblies.
This is to limit the probability of:
For floors and elements supporting floors, this is to limit the
probability of excessive movement, deflection or vibration, which could lead
to negative effects on the psychological well-being of persons.
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