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SCEC UGMS Committee Meeting

Conveners: C.B. Crouse and Christine Goulet
Dates: November 7, 2018 (10:00 - 15:00)
Location: SCEC Boardroom, USC, Los Angeles
SCEC Award and Report: 18141

SUMMARY: The SCEC Committee for Utilization of Ground Motion Simulations (or "UGMS Committee") is tasked to develop long-period response spectral acceleration maps for Los Angeles region for inclusion in NEHRP and ASCE 7 Seismic Provisions and in Los Angeles City Building Code. The maps would be based on 3-D numerical ground-motion simulations, and ground motions computed using latest empirical ground-motion prediction equations from the PEER NGA project. This project is coordinated with (1) the SCEC Ground Motion Simulation Validation Group, (2) other SCEC projects, such as CyberShake and UCERF, and (3) the USGS national seismic hazard mapping project.

For this workshop, we will start with a summary of the MCER tool publicly released May 2018. We will explore the addition of new capabilities, including disaggregation, access to simulated time series. We will introduce a new beta tool under development for existing buildings (ASCE 41-17). We also present updates from the building code and NEHRP committees as well as an update from the USGS National Seismic Hazard Maps Program (NSHM). We have reserved time for discussions following each talk and the goal is to agree on action items for the Committee’s 2019 activities. 


09:45 - 10:00 Meeting Check-In  
10:00 - 10:15 Welcome and Introductions Christine Goulet / C.B. Crouse
10:15 - 11:00 Released Site-Specific MCER Tool and consideration by LATBSDC & City of Los Angeles (PDF, 2.6MB) C.B. Crouse / Farzad Naeim
11:00 - 11:15 Future additions to tool (e.g., deaggregation data & broadband simulated acceleration time histories) (PDF, 3.5MB) Christine Goulet / Kevin Milner
11:15 - 11:45 Ground Motion Simulation Validation (GMSV) project on structural response summary (PDF, 1.5MB) Sanaz Rezaeian
11:45 - 12:15 Subsets of CyberShake time series for structural analyses (PDF, 988KB) Jack Baker / Ganyu Teng
12:15 - 13:00 Lunch  
13:00 - 13:15 BSSC Multi-Period Response Spectra and Design Parameters (PDF, 1.7MB) Charlie Kircher
13:15 - 13:30 Deterministic caps proposals for 2020 NEHRP Provisions (PDF, 3.3MB) Nico Luco
13:30 - 14:00 Update on USGS Urban Seismic Hazard Working Group: Details of USGS method for using CyberShake simulations to compute S. CA MCER for its 2020 “maps” Morgan Moschetti
14:00 - 14:30 Roll-Out of Beta version of Look-Up Tool for Site-Specific BSE response spectra per ASCE 41-17, comment period & schedule for official release C.B. Crouse / Edric Pauk / Kevin Milner
14:30 - 15:00 Discussions and next steps forward All
15:00 - 15:15 Action Items & Tentative Dates for Next UGMS Christine Goulet / All
15:15 Adjourn  


1. Crouse Supplement (SCEC UGMS MCER web tool)

Web Access https://data2.scec.org/ugms-mcerGM-tool_v18.4/
Related Presentations  
Crouse PDF, 2.6MB

2. Baker/Teng Supplement (Selected CyberShake Dataset)

Dataset (includes documentation) ZIP, 30MB
Related Presentations  
Baker/Teng PDF, 988KB


UGMS Members Attending:
*John Anderson (UNR)
Bob Bachman (R.E. Bachman)
*Jack Baker (Stanford)
*Jacobo Bielak (CMU)
C.B. Crouse (AECOM)
*Art Frankel (USGS)
Christine Goulet (SCEC/USC)
Rob Graves (USGS)
John Hooper (MKA)
Charlie Kircher (Kircher & Associates)
*Nico Luco (USGS)
*Farzad Naeim (Farzad Naeim, Inc)
Paul Somerville (AECOM)
Ali Sumer (OSHPD)
*Brad Aagaard (USGS)
*Tran Huynh (SCEC/USC)
Ting Lin (Texas Tech U)
Phil Maechling (SCEC/USC)
Xiaofeng Meng (SCEC/USC)
Kevin Milner (SCEC/USC)
Morgan Moschetti (USGS)
Kim Olsen (SDSU)
Edric Pauk (SCEC/USC)
Sanaz Rezaeian (USGS)
*Ganyu Teng (Stanford)
John Vidale (SCEC/USC)
Farzin Zareian (UCI)

*Remote Participants