Intent 1:
To limit the probability of:
- inadequate strength of individual members,
- discontinuity of individual members, which could lead
to compromised resistance to buckling, or
- compromised load transfer among members.
This is to limit the probability:
- that the column members will be unable to resist expected
vertical loads, which could lead to buckling of individual members,
- of compromised resistance to buckling, or
- of unequal load sharing among members of built-up wood
columns, which could lead to progressive structural failures of column
members.
For columns that support exterior walls or roofs, this is
to limit the probability of excessive deformation or deflection, or
compromised air barrier systems, which could lead to:
- condensation,
- precipitation ingress, or
- compromised thermal performance of components intended
to provide resistance to heat transfer.
This is to limit the probability of:
- an inadequate control of temperatures in interior spaces,
relative humidity, or water accumulation,
- the generation of pollutants from biological growth
or from materials that become unstable on wetting, or
- further compromised integrity of environmental separators,
which could lead to the deterioration of building elements.
This is to limit the probability of:
- negative effects on the air quality of indoor spaces,
- the inadequate thermal comfort of persons, and
- contact with moisture.
This is to limit the probability of harm to persons.