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Development of Guidelines and Economic Incentives for Seismic Retrofitting of Residential Houses
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When: Wednesday, February 26, 2020
Reg: 5:15 pm // Dinner & Program: 6:30 pm
Where: Michael's at Shoreline
2960 N. Shoreline Blvd
Mountain View, California  94043
United States
Contact: SEAONC

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South Bay Dinner Meeting:
Development of Guidelines and Economic Incentives 
for Seismic Retrofitting of Residential Houses

Over the past four years, the California Earthquake Authority (CEA) and Federal Emergency Management Agency (FEMA), has sponsored two unique but related projects related to the seismic evaluation, retrofit and quantification of economic benefits (loss reduction) of those retrofits, for selected single family residential dwellings.   This seminar will provide an overview of these two companion projects.

The first project, managed by the  Applied Technology Council under the ATC-110 Project series, recently completed a new prestandard for seismic assessment and retrofit of dwelling with cripple wall, living space over-garage, hillside, and chimney vulnerabilities.  This prestandard was released in October of 2019 as FEMA P-1100 and includes simplified engineering procedures as well as selected prescriptive plan sets for routine conditions.  The simplified design procedures and plan sets were developed and vetted using advance nonlinear analyses to meet performance objectives consistent with the philosophies of seismic building codes.

The second project, managed by the Pacific Earthquake Engineering Research Center (PEER),  focused on developing loss functions and other supporting information to quantify the economic benefits of retrofitting vulnerable cripple walls and anchorages. The overall goal of the program is to incentivize retrofits with insurance discounts and other programs, such as the CEA Brace + Bolt program.  The loss functions were developed through a comprehensive study, based on nonlinear dynamic analyses and FEMA P58 damage and loss assessments of archetype house designs, taking into account variations in exterior and interior wall finishes, number of stories, and other factors.  The computational modeling was supplemented by (1) cripple wall component and subassembly testing conducted at UC Berkley and UC San Diego, and (2) a workshop with insurance cost adjusters.  

Speakers: Colin Blaney of Buehler Engineering, Dave Welch of Stanford University, and Greg Deierlein of Stanford University

Colin Blaney

Mr. Blaney is a managing principal of the Silicon Valley office for Buehler and has over 30 years of experience with new and existing buildings including over 1 billion dollars of public sector design-build work in the last 10 years.  Colin has a special passion for the seismic evaluation and rehabilitation of existing buildings and served as the Chairman of SEAONC’s Existing Buildings Committee between 2007 and 2010.  Colin was the co-chair of the FEMA P-1100 project which is the subject of a portion of tonight’s talk and has been involved Plan Set A, the FEMA Plan Set, updates to both the Code and Commentary of IEBC and is the author for SEAONC’s example problems for IEBC A3. 

In 2009 Colin received the Edwin B. Zacher Award for outstanding professional service for SEAONC.  In 2016 Colin was also nominated as a SEAOC Fellow for his contributions to field of Structural Engineering.  Colin is a graduate of Cal Poly San Luis Obispo and a proud husband and father of two teenage daughters. 

Gregory G. Deierlein

Greg Deierlein is the John A. Blume Professor and Director of the Blume Earthquake Engineering Center at Stanford University and he currently co-directs the SimCenter of the Natural Hazards Engineering Research Infrastructure (NHERI). Deierlein specializes in the design and behavior of structures, nonlinear structural analysis, computational damage mechanics, and performance-based earthquake engineering. He is a registered professional engineer (NY) and is active in development of building code standards and policies to promote seismic resilience.  He is member of the US National Academy of Engineering and a Fellow of SEAOC.


Dave Welch

David is currently a postdoctoral researcher at Stanford University working as part of the multi-university PEER-CEA Wood-frame Project which aims to quantify the seismic performance of retrofit of cripple walls and sill anchorage in single family dwellings. He also served as an analyst for the Applied Technology Council to develop the recently released FEMA P-1100 prestandard for the assessment and retrofit of single- and multi-family dwellings.

In 2010, David completed his undergraduate degree in Civil Engineering at the University of Buffalo. After gaining interest in seismic design, David completed master’s (M.Sc. 2012) and doctoral (Ph.D., 2016) degrees in Earthquake Engineering from the UME Graduate School in Pavia, Italy. His research interests include seismic analysis of wood-frame structures, seismic design and performance of nonstructural components, and improving performance-based earthquake engineering methods and procedures.


Date: Wednesday, February 26th // Registration: 5:15 PM // Dinner: 6:30 PM // Program: 7:00 PM
Venue: Micheal's at Shoreline: 2960 N. Shoreline Blvd, Mountain View, CA 94043
Cost: Associate: $33 // Member: $39 // Student: $16 // Non-Member: $45

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