Intent 1:
To limit the probability of:
- an inadequate resistance to concentrated loads imposed
by beams, which could lead to the compressive failure of masonry units,
which could lead to the structural failure of the masonry [see corresponding
requirement in Sentence 9.20.8.4.(2)], or
- an excessively narrow contact area between beams and
hollow masonry, which could lead to wood fibres being crushed, which
could lead to the structural failure of beams.
Where elements support or are part
of an environmental separator, this is to limit the probability of:
- condensation,
- rainwater ingress,
- the ingress of moisture from the ground, or
- compromised thermal performance of components intended
to provide resistance to heat transfer.
This is to limit the probability of:
- an inadequate control of temperatures of interior spaces,
relative humidity, or water accumulation,
- the generation of pollutants from biological growth
or from materials that become unstable on wetting, or
- compromised integrity of elements supported by foundations
or beams, which could lead to the deterioration of building elements.
This is to limit the probability of:
- negative effects on the air quality of indoor spaces,
- the inadequate thermal comfort of persons, and
- contact with moisture.
This is to limit the probability of harm to persons.