Seismic

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“The scope of the seismic hazard study at a site depends on the seismicity of a region or site-specific considerations, the types of structures involved, and the consequences of failure. The design and evaluation of dams for earthquake loading should be based on a comparable level of study and analysis for each phase of the study (seismotectonic, geological, site, geotechnical, and structural investigations) and that level of study should reflect both the criticality of the structure and the complexity of the analysis procedures".

Types of Seismic Evaluations

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• Feasibility (PGA from USGS)

• Preliminary (Deterministic)

• Detailed (Site Specific)

Required Data

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• Geologic and Tectonic Setting

• Seismic Source Characterization

• Ground Motion Characterization

Types of Analyses

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• Probabilistic Seismic Analysis

• Deterministic Seismic Analysis

• Reservoir-triggered Seismicity

Examples

Best Practices Resources

Federal Guidelines for Dam Safety: Earthquake Analyses and Design of Dams (FEMA P-65)

Trainings

Citations:

Revision ID: 3001
Revision Date: 09/14/2022