9.23.17.2.(1)

Intent 1:

To limit the probability of an inadequate thickness or inappropriate specifications or rating of wall sheathing, which could lead to:

• an inadequate fastening base for cladding,
• inadequate support for required cladding and elements of an environmental separator, or
• an inability to resist expected lateral or gravity loads, where sheathing provides the required resistance to racking and buckling.

This is to limit the probability of:

• falling cladding,
• the deformation or displacement of cladding, or
• the excessive deflection of the wall.

For exterior floors or environmental separators supporting a floor, this is to limit the probability of the excessive deformation, displacement or failure of required environmental separation elements, which could lead to deterioration, which could lead to compromised structural integrity, which could lead to excessive movement, vibration or deflection, which could lead to negative effects on the psychological well-being of persons.