Intent 1:
To limit the probability of the excessive deflection
of structural members.
Where framing supports
or is part of an environmental separator, this is to limit the probability
of the excessive deflection, deformation, displacement or failure
of required environmental separation elements, which could lead to:
- precipitation ingress,
- air leakage, 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,
drafts, relative humidity, or water accumulation,
- the generation of pollutants from biological growth
or from materials that become unstable on wetting, or
- deterioration, which could lead to compromised integrity
of environmental separators or of elements protected by such separators.
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.