Intent 1:
To limit the probability of unprotected access openings,
which could lead to:
- where crawl spaces are unheated and access is from the
interior, moisture transfer from the interior, or
- where crawl spaces are heated or unheated and access
is from the exterior:
- the ingress of precipitation, or
- an infestation of insects or vermin.
This is to limit the probability of compromised structural
integrity, which could lead to:
- structural failure, or
- for environmental separators or elements supporting
an environmental separator, the displacement or failure of required
environmental separation elements, which could lead to the deterioration
of building elements.
This is to limit the probability of harm to persons.