Experimental Study and Seismic Response Evaluation of Chlorobutyl Rubber-Based Viscoelastic Dampers

Table 6

Risk category of buildings and structures for earthquake loads [33].

Use or occupancy	Risk category
Buildings and other structures that represent low risk to human life in the event of failure	I
All buildings and other structures except those listed in risk categories I, III, and IV	II
Buildings and other structures (excluding essential facilities), the failure of which could pose a substantial risk to human life	III
Buildings and other structures designated as essential facilities, the failure of which could pose a substantial hazard to the community	IV