Seismic (1999, 1997, and 1994 SBC):

(Revised:  04/01/08)

Seismic Hazard Exposure Group 1:  All buildings except those listed below.

Seismic Hazard Exposure Group 2:  Buildings which have a substantial public hazard due to occupancy or use, including buildings containing any one or more of the indicated uses.

1.)     Group A in which more than 300 people congregate in one area.

2.)     Group E with an occupant load greater than 250.

3.)     Group B used for college or adult education with an occupant load greater than 500.

4.)     Group I-Unrestrained with an occupant load greater than 50, not having surgery or emergency treatment facilities.

5.)     Group I-Restrained.

6.)     Power generating stations and other public utility facilities not included in Seismic Hazard Exposure Group 3.

7.)     Any other occupancy with an occupant load greater than 5000.

Seismic Hazard Exposure Group 3:  Essential facilities which are required for post-earthquake recovery, including buildings containing any one or more of the indicated uses.

1.)     Fire or rescue and police stations.

2.)     Group I-Unrestrained having surgery or emergency treatment facilities.

3.)     Earthquake emergency preparedness centers.

4.)     Post-earthquake recovery vehicle garages.

5.)     Power-generating stations and other utilities required as emergency back-up facilities.

6.)     Primary communication facilities.

7.)     Highly toxic materials as defined by 308.2.1 as H4 occupancy where the quantity of the material exceeds the exempt amounts of Table 308.2D.

 

See also:

§ Building Loading – Seismic