Intent 1:
To limit the probability that the performance of
windows, doors and skylights will fall significantly below expectations
with respect to:
- resistance to air pressure loads, which could lead to
excessive deflection,
- resistance to structural loads including snow loads
on skylights or where windows have sloped or near-horizontal components,
which could lead to insufficient strength, and
- resistance to water penetration loads and the capability
to dissipate water, which could lead to precipitation ingress or condensation.
This is to limit the probability of:
- damage or structural failure due to snow loads on skylights
or where windows have sloped or near-horizontal components,
- compromised structural integrity of window, door or
skylight assemblies and adjacent exterior wall assemblies, or
- precipitation ingress or condensation, which could lead
to deterioration, which could lead to compromised structural integrity
of such assemblies and adjacent exterior wall assemblies.
This is to limit the probability of harm to persons.