To limit the probability of unlevel surfaces underlying sill plates, which could lead to discontinuous support for sill plates, which could lead to an inability to resist expected gravity or lateral loads, which could lead to excessive deflection or failure of sill plates.
Where wood-frame construction supports or is part of an environmental separator, this is to limit the probability of the displacement or failure of required environmental separation elements, which could lead to:
This is to limit the probability of:
This is to limit the probability of:
This is to limit the probability of harm to persons.