5.8.1.2.(1)

Intent 1:

To limit the probability of:

• inadequate drainage of below-ground assemblies, or
• excessive moisture loading on the assemblies.

This is to limit the probability of moisture ingress from the ground, which could lead to deterioration, which could lead to compromised structural integrity of the separators or of elements supported or protected by the separators.

Intent 2:

For floors supported on ground, to limit the probability of reducing the soil-bearing capacity due to saturation, which could lead to structural failure, which could lead to harm to persons.