Intent 1:
To limit the probability of shear failure, anchor
withdrawal or inadequate distribution of lateral and wind-uplift loads,
which could lead to the displacement of wood-frame roof systems under
wind-uplift loads.
This is to limit the probability
of deformation or deflection of roofing, which could lead to the excessive
deformation, displacement or failure of required environmental separation
elements.
This is to limit the probability of:
- condensation,
- precipitation ingress,
- moisture 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 in 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.