Sentence 9.20.17.5.(3)

Intent 1:

To limit the probability that ledger boards will not be adequately attached, which could lead to inadequate end support of floor joists, which could lead to an inability to resist expected gravity loads, which could lead to the excessive movement, deformation or failure of floor assemblies.

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.