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FEMA P-2078: Procedures for Developing Multi-Period Response Spectra at Non-Conterminous United States Sites, 2020
- FEMA P-2078
- Procedures for Developing
Multi-Period Response Spectra at Non-Conterminous United States Sites
- Preface
- Executive Summary
- Table of Contents
- List of Figures
- List of Tables
- Chapter 1: Introduction [Go to Page]
- 1.1 Purpose
- 1.2 Objectives
- 1.3 Scope
- 1.4 Report Organization
- Chapter 2: Background [Go to Page]
- 2.1 Relevant Seismic Code Development Work
- 2.2 Summary of MPRS Proposals for the 2020 NEHRP Provisions
- 2.2 Summary of MPRS Proposals for the 2020 NEHRP Provisions [Go to Page]
- 2.2.1 Key Changes to the Seismic Design Criteria of Chapter 11
- 2.2.2 Key Changes to the Site Classification Criteria of Chapter 20
- 2.2.3 Key Changes to the Site-Specific Ground Motion Procedures of Chapter 21
- 2.2.4 Key Changes to the Seismic Ground Motion Maps of Chapter 22
- 2.3 2018 Update of the National Seismic Hazard Model
- Chapter 3: Study Approach and Methods [Go to Page]
- 3.1 General Approach and Methods [Go to Page]
- 3.1.1 Definition of Multi-Period Response Spectra (MPRS)
- 3.1.2 Key Hazard Parameters Influencing Spectral Shape
- 3.1.3 Frequency Content of MPRS Derived from WUS Crustal and Subduction Earthquake Ground Motion Models
- 3.2 Response Spectrum Shape Parameters (RSSPs) [Go to Page]
- 3.2.1 Census Tract-Based Data
- 3.2.2 Development of Probabilistic RSSPs
- 3.2.3 Development of Deterministic RSSPs
- 3.3 Development of Probabilistic and Deterministic MPRS [Go to Page]
- 3.3.1 Selection of Short-Period and Long-Period RSSPs
- 3.3.2 Determination of Short-Period and Long-Period Response Domains
- 3.3.3 Calculation of Short-Period and Long-Period MPRS
- 3.3.4 Calculation of Mid-Period MPRS
- 3.4 Development of Site-Specific MCER Ground Motions
- Chapter 4: Development of Probabilistic Multi-Period Response Spectra [Go to Page]
- 4.1 Approach and Methods [Go to Page]
- 4.1.1 Overview
- 4.1.2 Development of Site-Specific Probabilistic Hazard Curves
- 4.1.3 Development of Site-Specific Probabilistic MPRS and RSSPs
- 4.2 Probabilistic RSSPs for (TL, SS, RS/1) Bins [Go to Page]
- 4.2.1 Influence of Site Conditions on Frequency Content
- 4.2.2 Influence of Ground Motion Level, Ss, and Spectral Response Ratio, RS/1, on Frequency Content
- 4.2.3 Influence of the Long-Period Transition Period, TL, on Frequency Content
- 4.3 Generic Probabilistic RSSPs
- 4.4 Procedure for Developing Site-Specific Probabilistic MPRS [Go to Page]
- 4.4.1 Probabilistic Input Parameters
- 4.4.2 Selection of Probabilistic RSSPs
- 4.4.3 Calculation of Probabilistic MPRS
- 4.5 Example Set of Probabilistic MPRS for Irvine, California [Go to Page]
- 4.5.1 Irvine Site
- 4.5.2 Derived Probabilistic MPRS
- 4.5.3 Comparison of Probabilistic MPRS
- Chapter 5: Development of Deterministic Multi-Period Response Spectra [Go to Page]
- 5.1 Approach and Methods [Go to Page]
- 5.1.1 Overview
- 5.1.2 NGA-West2 Spreadsheet Calculation of MCER Ground Motion Response Spectra
- 5.1.3 Values of Source and Site Parameters
- 5.1.4 Average 84th Percentile Response of NGA-West2 GMMs
- 5.2 Generic Deterministic RSSPs
- 5.3 Procedure for Developing Site-Specific Deterministic MPRS [Go to Page]
- 5.3.1 Deterministic Input Parameters
- 5.3.2 Selection and Interpolation of Short-Period and Long-Period RSSPs
- 5.3.3 Calculation of Deterministic MPRS
- 5.4 Example Set of Deterministic MPRS for San Mateo, California [Go to Page]
- 5.4.1 San Mateo Site
- 5.4.2 Derived Deterministic MPRS
- 5.4.3 Comparison of Deterministic MPRS
- 5.5 Deterministic Lower Limit MCER Response Spectra [Go to Page]
- 5.5.1 Background
- 5.5.2 Approach
- 5.5.3 Lower Limit Deterministic MPRS
- Chapter 6: Validation of Derived Multi-Period Response Spectra [Go to Page]
- 6.1 Calculation of MPRS at 34 WUS and CEUS Sites [Go to Page]
- 6.1.1 Proposed MPRS and Parameters SMS and SM1
- 6.1.2 Derived MPRS and Parameters SMS and SM1
- 6.2 Comparison of Ground Motion Parameters SMS and SM1 of Derived MPRS with those of Proposed MPRS
- 6.3 Comparison of Derived MPRS and Proposed MPRS
- Chapter 7: Example Development of Multi-Period Response Spectra for Six Non-Conterminous U.S. Sites [Go to Page]
- 7.1 Example Non-Conterminous U.S. Sites
- 7.2 Development of Probabilistic and Deterministic MPRS [Go to Page]
- 7.2.1 Hilo, Hawaii
- 7.2.2 Honolulu, Hawaii
- 7.2.3 Anchorage, Alaska
- 7.2.4 Fairbanks, Alaska
- 7.2.5 San Juan, Puerto Rico
- 7.2.6 Anderson AFB, Guam
- 7.3 Derived MPRS and Ground Motion Parameters SMS and SM1 [Go to Page]
- 7.3.1 Hilo, Hawaii
- 7.3.2 Honolulu, Hawaii
- 7.3.3 Anchorage, Alaska
- 7.3.4 Fairbanks, Alaska
- 7.3.5 San Juan, Puerto Rico
- 7.3.6 Anderson AFB, Guam
- Chapter 8: Summary and Recommendations [Go to Page]
- 8.1 Summary
- 8.2 Key Results
- 8.3 Recommendations
- Appendix A: Development of Census Tract-Based Ground Motion Data [Go to Page]
- A.1 Census Tract Sites
- A.2 Collection and Sorting of Ground Motion Data
- A.3 Binning of Ground Motions
- A.4 Sets of Probabilistic MPRS
- Appendix B: Probabilistic Response Spectrum Shape Parameters
- Appendix C: Deterministic Response Spectrum Shape Parameters
- Appendix D: Multi-Period Response Spectra of 34 U.S. City Sites Proposed for the 2020 NEHRP Provisions and ASCE 7-22 [Go to Page]
- D.1 Proposed Probabilistic MCER Ground Motions
- D.2 Proposed Deterministic MCER Ground Motions (without the Lower Limit)
- D.3 Proposed MCER Ground Motions
- Appendix E: Multi-Period Response Spectra of 34 U.S. City Sites Derived from Parameters SS, S1, and TL [Go to Page]
- E.1 Derived Probabilistic MCER Ground Motions
- E.2 Derived Deterministic MCER Ground Motions (without the Lower Limit)
- E.3 Derived MCER Ground Motions
- References
- Project Participants
- Back Cover [Go to Page]
