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Development of Seismotectonic and Ground Motion Parameters. (Working Draft)

机译：地震构造与地震动参数的发展。 （工作草案）

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The selection of earthquake loading parameters is a critical part of the overallprocess of seismic evaluation in the Bureau of Reclamation. The seismic evaluation process by which these parameters are selected consists of four interdependent elements: seismotectonic studies, ground motion studies, site investigations, and structural analysis. Because all the elements are parts of one process, a consistent level of effort (i.e., common level of confidence in conclusions) is required for all the elements. The importance of the structure being evaluated ultimately determines the level of effort expended on the seismic evaluation process. The report provides guidance on the process of selecting study levels for seismotectonic and ground motion studies. This guidance comes from (1) consideration of the factors affecting study levels, especially the criticality of the structure; and (2) understanding the relationships of seismotectonic and ground motion studies to related site investigations and structural analyses. To effectively select study levels, continued interaction within the framework of the design or project team is required. This interaction must begin prior to the initiation of any studies and continue throughout the entire seismic evaluation process.

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