To limit the probability of inadequate end bearing
area, which could lead to excessive localized stress, which could
- crushing of concrete at the base of the footing (or
of wood at the top, where a column supports a wood beam), or
- shear failure of wood beams (parallel to the grain),
which could lead to the structural failure of beams.
This is to limit the probability of compromised structural
integrity, which could lead to:
- structural failure, or
- for environmental separators or elements supporting
an environmental separator, excessive deformation or deflection of
exterior walls or roofs, which could lead to the displacement or failure
of required environmental separation elements, which could lead to
the deterioration of building elements.
This is to limit the probability of harm to persons.