9.23.9.4.(6)

Intent 1:

To limit the probability of inadequate restraint of the lower edges of joists, which could lead to the excessive twisting of joists, which could lead to an inability to resist expected gravity and lateral loads.

This is to limit the probability of:

• compromised structural integrity, or
• for exterior floors, 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.