Seismic Use Group
Occupancy or Function of Structure
All structures having occupancies or functions not listed below.
I. Standard Occupancy Structures
Covered structures whose primary occupancy is public assembly with a capacity greater
than 300 persons.
II. Special Occupancy Structures
Day care centers with a capacity greater than 150 persons.
Educational buildings through the 12th grade with a capacity greater than 250 persons.
Buildings for colleges or adult education schools with a capacity greater than 500
Medical facilities with 50 or more resident incapacitated patients, but not otherwise
designated as Seismic Use Group IIIE facility.
Jails and detention facilities.
All structures with occupancy capacity greater than 5,000 persons.
Structures and equipment in power-generating stations and other public utility facilities
not included in Seismic Use Group IIIE, and are required for continued operation.
Water treatment facilities required for primary treatment and disinfecting of potable water.
Waste water treatment facilities required for primary treatment.
Facilities having high value equipment, when justification is provided by the using
Table 4-1 Seismic Use Groups