9.23.4.4.(1)

Intent 1:

To limit the probability of excessively long spans, which could lead to inadequate strength to support the additional weight of a concrete topping, which could lead to excessive deflection or failure.

For floors and constructions supporting floors, this is to limit the probability of:

• compromised structural integrity, or
• for exterior floors or environmental separators supporting a floor, the excessive deformation, displacement or failure of required environmental separation elements, which could lead to deterioration, which could lead to further compromised structural integrity.

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