Intent 1:
To limit the probability of blocking or furring
providing inadequate support and nailing surfaces for vertical edges
of interior finishes, sheathing or cladding materials, which could
lead to inadequate strength of wood-frame assemblies, which could
lead to an inability to resist expected vertical or lateral loads.
This is to limit the probability of:
- detachment or separation of interior finishes, sheathing
and cladding from supporting members,
- displacement of sheathing or cladding, or
- inadequate racking resistance for exterior walls and
lateral support of walls, where finishes, sheathing or cladding provide
required racking or buckling resistance.
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, which could lead to negative effects on the
psychological well-being of persons.