Skip Navigation
 
Federal Energy Regulatory Commission



Industries Hydropower Dam Safety and Inspections RIDM - Regulations, Guidelines and Manuals

 
Text Size small medium large
Engineering Guidelines for the Evaluation of Hydropower Projects

Chapter 13 – Evaluation of Earthquake Ground Motions (Final)

The final version of Chapter 13, Evaluation of Earthquake Ground Motions, has been completed. The new guideline is now available for use. The significant changes from the February 2007 draft version are highlighted below.

Summary of Changes

The February 2007 draft 6.5 has been revised with any significant changes identified below. The final Guideline document is 20 pages shorter. Changes to the Guideline are based on new states-of-the-practice.

Page
Section
Description of Revision 3 Changes
i
2.5
Tsunamis deleted
ii
n/a
New Appendix B added. Old Appendix B-1 and B-2 became Appendix C. Old Appendix C-Appendix F have become Appendix D. Old Appendix F, G, H, K, and L were deleted. Appendix J became Appendix F. Appendix I became Appendix E.
26
3.5
Third paragraph added maximum moment magnitude for areal sources.
27
4.1
Equation B-9 added to determine percentile earthquake ground motion to be used in analysis.
28
4.2
Revised the whole page.
30
5.0
New page on “estimation of earthquake ground motions at a rock outcrop.”
32
6.3
New paragraph regarding slip rate and percentile ground motion.
32
6.4
Third paragraph added.
33
6.5
Revisions to the paragraph.
A-1/A-2
n/a
Added equations and modified Figure A-1.
B-1 to B-6
n/a
New Appendix on “Selection of Appropriate Percentile Earthquake Ground Motion Level In A Deterministic Seismic Hazard Evaluation.
Appendix C
n/a
This Appendix was old Appendix B1 and B-2 and also contains small revisions throughout.
Appendix D
n/a
Revised and shorted chapter on ground motion models and the data is now referenced.
Appendix E
n/a
New Appendix E is old Appendix I.
Appendix F
n/a
New Appendix F is old Appendix J. Revisions made throughout.


Please send any comments or suggestions on Chapter 13 of the guidelines to James McHenry (james.mchenry@ferc.gov) and Justin Smith (justin.smith@ferc.gov)

» Chapter 13 – Evaluation of Earthquake Ground Motions (Final) PDF