Sentence 9.15.4.7.(1)

Intent 1:

To limit the probability of excessive height or inadequate thickness of thin portions of concrete or unit masonry foundation walls, which could lead to inadequate strength, which could lead to an inability to support expected vertical loads, which could lead to structural damage to the foundation and the building.

This is to limit the probability of:

• compromised structural integrity, or
• where elements support or are part of an environmental separator, the displacement or failure of required environmental separation elements, which could lead to the deterioration of building elements.

For floors and elements supporting floors, this is to limit the probability of excessive movement, deflection or vibration, which could lead to negative effects on the psychological well-being of persons.