9.17.3.3.(1)

Intent 1:

For columns exposed to the weather, to limit the probability that the columns will rust at an excessive rate, which could lead to the premature failure of the columns.

This is to limit the probability of:

• compromised structural integrity, or
• for environmental separators or elements supporting 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 to limit the probability of excessive deflection or vibration of floors, which could lead to negative effects on the psychological well-being of persons.