9.15.3.4.(3)

Intent 1:

To limit the probability of an inadequate footing width, which could lead to reduced friction among soil particles, which could lead to an inadequate bearing strength of the soil beneath the footings, which could lead to compressive failure and excessive settlement of the soil, which could lead to an inability to support vertical building loads or lateral earth loads.

Where elements support or are part of an environmental separator, this is to limit the probability of damage to the foundation or the superstructure, which could lead to:

• condensation,
• rainwater ingress,
• the ingress of moisture from the ground, or
• compromised thermal performance of components intended to provide resistance to heat transfer.

This is to limit the probability of:

• an inadequate control of temperatures of interior spaces, relative humidity, or water accumulation,
• the generation of pollutants from biological growth or from materials that become unstable on wetting, or
• compromised integrity of elements supported by foundations, which could lead to the deterioration of building elements.

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.