Intent 1:
To limit the probability that roof sheathing will
not be installed or that inappropriate roof sheathing will be installed,
which could lead to:
- the structure being unable to distribute the roof loads,
which could lead to an inability to resist expected gravity and lateral
loads, which could lead to excessive deflection or failure of the
structural system, or
- insufficient support of the roofing material, which
could lead to excessive deflection or failure of the roofing material.
This is to limit the probability of:
- the displacement or failure of required environmental
separation elements, or
- precipitation or meltwater ingress.
This is to limit the probability of:
- condensation,
- water ingress,
- 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,
relative humidity or drafts,
- the generation of pollutants from biological growth
or from materials that become unstable on wetting,
- deterioration, which could lead to further compromised
integrity of environmental separators, or
- water accumulation in interior spaces.
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.