Intent 1:
To limit the probability of an inadequate resistance
to hydrostatic pressure, which could lead to the failure of floors-on-ground.
This to limit the probability of:
- the ingress of moisture from the ground, or
 - the compromised thermal performance of components intended
to provide resistance to heat transfer.
 
This is to limit the probability of: 
- an inadequate control of temperatures in interior spaces,
relative humidity, or water accumulation,
 - the generation of pollutants from biological growth
or from materials that become unstable on wetting,
 - deterioration, which could lead to compromised integrity
of floors-on-ground.
 
This is to limit the probability of:
- negative effects on the air quality of indoor spaces,
 - the inadequate thermal comfort of persons, and 
 - contact with moisture.
 
This is to limit the probability of harm to persons.