A guide to developing detailed approaches and criteria for assessing and defining dynamic and seismic loads for the design of a geologic repository, as required before a permit and license can be issued. Overviews current principles and practices of load definition and design for facilities having comparable public safety impact, and demonstrates their application to the unique challenges of nuclear-waste repositories. The Yucca Mountain site is used as an example. Annotation c. by Book News, Inc., Portland, Or.