Intent 1:
To limit the probability that the calculation of
loads due to earthquake will not take into account the properties
of the structural system [i.e. lack of ductility, energy absorption
and overstrength], which could lead to:
- the excessive deformation of, or excessive stress in,
the structural elements, which could lead to damage to the building,
or
- the excessive deformation of, or excessive stress in,
the building structure, which could lead to damage to the building,
which could impede the intended use and occupancy of the building.
Intent 2:
To limit the probability that the lateral-force-resisting
system chosen for the design will not have a minimum ductility, integrity,
and overstrength to absorb local failure due to maximum expected seismic
ground motions, which could lead to:
- the excessive deformation of, or excessive stress in,
the structural elements, which could lead to damage to the building,
or
- the excessive deformation of, or excessive stress in,
the building structure, which could lead to damage to the building,
which could impede the intended use and occupancy of the building.