Sentence 9.20.17.3.(2)

Intent 1:

To limit the probability of an insufficient depth of concrete across the width of openings to provide adequate flexural and shear capacity, and cover and bond for reinforcing steel, which could lead to an inability to resist transverse or vertical loads, which could lead to concrete cracking or the displacement of walls.

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.

This is to limit the probability of:

• for floors and elements supporting floors, persons losing their balance, tripping or falling, or
• the compromised operation of doors or windows required for egress in an emergency.

This is to limit the probability of harm to persons.