Sentence 9.3.2.8.(1)

Intent 1:

To limit the probability of the failure to adjust spans for undersized joists, rafters, lintels or beams, which could lead to inadequate strength or rigidity, which could lead to an inability to resist expected gravity, lateral or wind uplift loads.

This is to limit the probability of:

• compromised structural integrity, or
• where lumber supports or is used in an environmental separator, the displacement or failure of required environmental separation elements, which could lead to the deterioration of building elements, which could lead to compromised structural integrity.

This is to limit the probability of:

• the excessive deformation of walls, ceilings and roofs, and
• deflection or vibration of floors.

This is to limit the probability of negative effects on the psychological well-being of persons.