ABSTRACT
This paper sum m arizes results of a continuing study on dam age potential of ground m otions and its im plications for seismic design. A seismic design procedure that accounts explicitly for ductility and cumulative dam age dem ands and capacities is proposed. The discussion focuses on the identification and determ ination of seismic dem and param eters that are needed to im plem ent the proposed design procedure. Emphasis is placed on strength, ductility, and energy dem ands. Results are presented for dem ands im posed by rock and stiff soil ground motions on single and m ulti degree of freedom systems. The objective of the paper is to dem o n stra te th a t ductility and cum ulative dam age considerations can and should be incorporated explicitly in the design process.
