Intent 1:
To limit the probability of one Seismic Force Resisting
System being supported by another Seismic Force Resisting System with
a higher combined reduction factor, which could lead to a lower base
shear, 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 direct Code users to Sentence 4.1.8.15.(6), which addresses design forces.