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This report summarizes the results of an assessment of the accuracy of
response of six numerical step-by-step procedures used in computational structural dynamics. The six algorithms used in this study are representative of the
different types of numerical procedures used to compute the dynamic structural
response to a time-dependent loading history. The time-dependent loading envisioned in this research is that of the motion of the ground below a discrete structural model and is expressed in terms of a ground acceleration time-history. The
dynamic structural response for each structural model used in this study is characterized by the computed response time-histories of accelerations, velocities, and