5.2.1.2.(1)

Intent 1:

To limit the probability that inappropriate assumptions will be made with regard to interior environmental load in the design of environmental separators, which could lead to the inadequate performance or premature failure of components and assemblies of environmental separators under expected environmental loads, which could lead to:

• air infiltration and exfiltration,
• condensation,
• precipitation ingress, or
• moisture ingress from the ground.

This is to limit the probability of:

• deterioration, which could lead to compromised structural integrity of the separators or of elements supported or protected by the separators, and
• the freezing of soils on which foundations bear, which could lead to the displacement of structural elements.

This is to limit the probability of structural failure, which could lead to harm to persons.

Intent 2:

To direct Code users to a source of information commonly used for defining interior environmental loads.