Intent 1:
To limit the probability of an inadequate thickness
or inappropriate specifications or rating of wall sheathing, which
could lead to:
- an inadequate fastening base for cladding,
- inadequate support for required cladding and elements
of an environmental separator, or
- an inability to resist expected lateral or gravity loads,
where sheathing provides the required resistance to racking and buckling.
This is to limit the probability of:
- falling cladding,
- the deformation or displacement of cladding, or
- the excessive deflection of the wall.
This is to limit the probability of the displacement or
failure of required environmental separation elements, which could
lead to:
- condensation,
- precipitation ingress,
- excessive heat transfer,
- pollutant ingress, or
- compromised thermal performance of components intended
to resist 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 further compromised
integrity of environmental 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.