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Project Title: Performance-Based Seismic Engineering: Benchmarking of Existing Building Evaluation Methodologies

Client: National Institute of Standards and Technology

Project Duration: 

Purpose: The primary objective of this report is to benchmark evaluation methodologies for existing reinforced concrete buildings and present recommendations for improvement of the seismic evaluation procedures of ASCE/SEI 41-17, Seismic Evaluation and Retrofit of Existing Buildings.  For this purpose, calculated results from implementing evaluation procedures described in applicable methodologies are compared to data available for eight reinforced concrete structures subjected to ground motion shaking.  

This project produced the following report:

Project Team:

Project Techncial Committee
Russell Berkowitz (Project Director)
Wassim Ghannoum
Insung Kim
Dawn Lehman
Abbie Liel
Laura Lowes
Adolfo Matamoros
Farzad Naeim
Rob Smith
John Wallace

Project Review Panel
Brian Kehoe
Santiago Pujol
Peter Somers
Daniel Zepeda


 Working Group Members
Saman A. Abdullah
Tarbin Basnet
Travis Chrupalo
Alex Chu
Dustin Cook
Ariel Creagh
John A. Egan
Hamid Khodadadi
Kristijan Kolozvari
Ali Roufegarinejad
Andrew Sen

National Institute of Standards and Technology
Siamak Sattar, Dustin Cook, Steven L. McCabe

Applied Technology Council
Jon A. Heintz
Ayse Hortacsu

 

 

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Project Title: Improving Seismic Design of New Buildings

Client: Federal Emergency Management Agency

Purpose: To support two ongoing efforts under two Contract Line Items (CLINS), as follows: (1) CLIN 1, Improving Seismic Design of New Buildings with Configuration Irregularities; and (2) CLIN 2, Improving the Alternate Rigid-Wall Flexible-Diaphragm Building Design Procedure. The work under CLIN 1 is a continuation of ATC-123-2 and covers Phase 4 of the ATC-123 project series. The purpose of CLIN 1 is to help complete the problem-focused study for evaluation and improvement of code and standard requirements for seismic design of buildings with configuration irregularities. The work under CLIN 2 is a continuation of ATC-135 and covers Phase 2 of that work. The purpose of CLIN 2 is to improve and update the alternate design procedure for Rigid Wall and Flexible Diaphragm (RWFD) buildings.

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Project Title: Seismic Safety and Engineering Consulting Services for the Earthquake Safety Implementation Program (ESIP), City and County of San Francisco

Client: City and County of San Francisco

Purpose: To provide technical expertise in completing selected tasks from the Earthquake Safety Implementation Program (ESIP) work plan that was developed under the CAPSS project (ATC- 119) and to conduct a study of tall buildings in San Francisco (ATC-119-1).

This project produced the following report: San Francisco Tall Buildings Study

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Project Title: Solutions to the Issue of Short-Period Building Performance

Client: Federal Emergency Management Agency

Purpose: To advance the roadmap developed on the ATC-116 Project to: (1) identify key missing elements of current modeling practice related to short period buildings; (2) develop a methodology to improve analytical modeling of short period buildings; (3) calibrate the methodology with observed performance of short period buildings in recent earthquakes; and (4) simplify the methodology into practical solutions that can be implemented in codes and standards.

This project produced the following reports:

FEMA P-2139-1, Short-Period Building Collapse Performance and Recommendations for Improving Seismic Design, Volume 1 – Overarching Findings, Conclusions, and Recommendations

FEMA P-2139-2, Short-Period Building Collapse Performance and Recommendations for Improving Seismic Design, Volume 2 – Study of One-to-Four Story Wood Light-Frame Buildings

FEMA P-2139-3, Short-Period Building Collapse Performance and Recommendations for Improving Seismic Design, Volume 3 – Study of One-to-Four Story Special Reinforced Masonry Shear Wall Buildings

FEMA P-2139-4, Short-Period Building Collapse Performance and Recommendations for Improving Seismic Design, Volume 4 – Study of One-to-Four Story Steel Special Concentrically Braced Frame Buildings

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Project Title: Delivery of FEMA P-50/P-50-1 Training for the California Earthquake Authority

Client: California Earthquake Authority

Purpose: To conduct on-demand training for FEMA P-50, Simplified Seismic Assessment of Detached, Single-Family, Wood-Frame Dwellings, and FEMA P-50-1, Seismic Retrofit Guidelines for Detached, Single-Family, Wood-Frame Dwellings at locations selected by CEA, as well as develop the requirements to form the basis of a certification program to be implemented by others.

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 Welcome to the ATC Team!

Valley Mike cropMichael Valley As a former Principal at Magnusson Klemencic Associates in Seattle, Mike Valley comes to ATC with more than 30 years of structural engineering experience in new design, evaluation and retrofit of existing buildings, applied research, and codes and standards development. Mike’s design experience includes the landmark Salesforce Tower in San Francisco, and his research and development experience includes the FEMA 356 Prestandard and Commentary for the Seismic Rehabilitation of Buildings, FEMA P-2012 Assessing Seismic Performance of Buildings with Configuration Irregularities (ATC-123 Project), and NIST GCR 10-917-9 Applicability of Nonlinear Multiple-Degree-of-Freedom Modeling for Design (ATC-76-6 Project).

Mike also has extensive experience as an ATC consultant serving as a reviewer, a technical contributor, and Project Director on multiple ATC projects. We look forward to how Mike’s unique experiences as a successful team member will contribute to ATC projects in the future.

Michael Mahoney
Michael Mahoney

Retired from federal service as a Senior Geophysicist with the Federal Emergency Management Agency (FEMA), Mike Mahoney comes to ATC with more than 30 years of experience in hazard mitigation program management and policy development, post-disaster response and recovery, and problem-focused research and development in support of FEMA’s efforts under the National Earthquake Hazards Reduction Program (NEHRP). He has led FEMA’s earthquake-related work with the International Code Council and has been involved with the development of national model codes and standards since 1984.

In his career at FEMA, Mike has led the development of countless major FEMA publications, including: FEMA 350 Recommended Seismic Design Criteria for New Steel Moment-Frame Buildings and its series of companion reports (ATC-41 Project series), FEMA P-58 Seismic Performance Assessment of Buildings, Methodology and Implementation (ATC-58 Project series), FEMA P-695 Quantification of Building Seismic Performance Factors (ATC-63 Project), FEMA P-2018 Seismic Evaluation of Older Concrete Buildings for Collapse Potential (ATC-78 Project), and FEMA P-2090/NIST SP-1254 Recommended Options for Improving the Built Environment for Post-Earthquake Reoccupancy and Functional Recovery Time (ATC-137 Project). With Mike’s extensive knowledge of federal government programs, and past collaboration with state and local agencies, hazard mitigation partners, and code development organizations, we look forward to how his unique experiences will help serve ATC’s client needs and objectives in the future.