Intent 1:
To limit the probability of:
- precipitation or meltwater ingress
- through the first and second planes of protection,
- at penetrations through the first and second planes
of protection, and
- at interfaces with other wall assemblies, and
- an inadequate dissipation to the exterior of precipitation
or meltwater that does bypass the first plane of protection.
This is to limit the probability of deterioration, which
could lead to structural failure of exterior walls or elements supported
or protected by exterior walls, which could lead to harm to persons.