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ATC Upcoming Events

Date	Title	Type	Registration and More Information
May 14, 2025 12:00 pm PT/ 3:00 pm ET	Post-Earthquake Investigations: Coordination, Collaboration, and Participation in NEHRP Activations (USGS Circular 1542)	ATC Webinar	Register Now Order PDH Certificate

Fall 2025	Structural Design for Coastal Flood Resilience: Findings and Recommendations from Workshop Organized by ATC, Princeton University and NSF (ATC-164)	ATC Webinar	TBD

- Subscribe to the ATC Mailing List to receive the latest updates on our events and organization.
- Visit the ATC Training page to learn about hosting an ATC-20, ATC-45 or other in-person and web-based trainings.
- Check out our FEMA NETAP Training page for additional training opportunities.

Other Upcoming Events

Date	Title	Type	Registration and More Information
May 3, 2025 8:00 am-5:00 pm	ATC-20 SAP Evaluator Training Location: Stanford University	In Person	Registration
Sep. 15-19, 2025	19^th World Conference on Seismic Isolation, Energy Dissipation and Active Vibration Control of Structures Location: UC Berkeley	In Person	Registration

ATC Past Events

Date	Title	Presenter(s)	Type
Feb. 26. 2025	Benchmarking ASCE/SEI 41-17 Evaluation Methodologies for Existing Reinforced Concrete Buildings	Russell Berkowitz	Recording Handouts
Feb. 5, 2025	FEMA P-1026, Seismic Design of Rigid Wall-Flexible Diaphragm Buildings: An Alternative Procedure	Dominic Kelly	Recording Handouts

Dec. 11, 2024	Recommendations Related to Concrete Structural Walls in FEMA P-2208, NEHRP Recommended Revisions to ASCE/SEI 41-17	Garrett Hagen	Webinar #3 of 3 Handouts Recording

Nov. 20, 2024	Recommendations Related to Unreinforced Masonry in FEMA P-2208, NEHRP Recommended Revisions to ASCE/SEI 41-17	Rebecca Collins	Webinar #2 of 3 Handouts Recording

Sep. 18, 2024	Recommendations Related to Nonlinear Analysis in FEMA P-2208, NEHRP Recommended Revisions to ASCE/SEI 41-17	Robert Pekelnicky	Webinar #1 of 3 Handouts Recording

Apr. 3, 2024	Improving Performance of Buildings in Very High-Seismic Regions (FEMA P-2343)	Charles Kircher	Webinar Download Reports Q&A Download PDF Presentation Recording

Feb. 28, 2024	FEMA P-807-1, Guidance and Recommendations for the Seismic Evaluation and Retrofit of Multi-unit Wood-frame Buildings with Weak First Stories	David Mar Garrett Hagen	Webinar Q&A Downloads/Recording

Dec. 8, 2023	ATC at 50: Celebrating the Past, Engaging the Present, and Envisioning the Future		In-Person

Jul. 25, 2023	FEMA P-2012, Assessing Seismic Performance of Buildings with Configuration Irregularities	Mike Valley	Webinar Downloads/Recording

Feb. 15, 2023	Part B: The Seismic Design Process for New Buildings Earthquake-Resistant Design Concepts (FEMA P-749)	Ron Hamburger	Webinar Downloads/Recording

Feb. 8, 2023	Part A: The Basic Concepts of Earthquake-Resistant Design and an Introduction to U.S. Seismic Regulations Earthquake-Resistant Design Concepts (FEMA P-749)	Mike Griffin	Webinar Downloads/Recording

Dec. 14, 2022	Nonlinear Structural Analysis for Seismic Performance Assessment and Design of Buildings	Greg Deierlein	ATC Webinar

Dec. 5-7, 2022	Fifth International Workshop on Seismic Performance of Non-Structural Elements (SPONSE)	Varies	In-Person Workshop Download Proceedings

Nov. 4, 2022	FEMA P-1026, Seismic Design of Rigid Wall-Flexible Diaphragm Buildings: An Alternative Procedure	Dominic Kelly	Webinar Downloads/Recording

Aug. 31, 2022	FEMA P-2018, Seismic Evaluation of Older Concrete Buildings for Collapse Potential,	Bill Holmes Abbie Liel	Webinar Downloads/Recording

Aug. 3, 2022	Future Code Changes Explained—Seismic Analysis and Design of Nonstructural Components and Systems	Maryann Phipps Bret Lizundia	ATC Webinar

June 15, 2022	FEMA P-2091, A Practical Guide to Soil-Structure Interaction	Bret Lizundia	Webinar

Apr. 26, 2022	FEMA P-2139, Short-Period Building Collapse Performance and Recommendations for Improving Seismic Design	Charlie Kircher Kelly Cobeen	Webinar

Feb. 9, 2022	ASCE 41 Design Examples (FEMA P-2006)	Ron LaPlante	Webinar

Nov. 17, 2021	ATC Design Guide 3, Serviceability Design of Tall Buildings Under Wind Loads	Chris Letchford, Bill Baker, Lawrence G. Griffis, Peter Irwin	ATC Webinar

Sep. 1, 2021	Reducing Earthquake Risk in the Classroom and Beyond	Maryann Phipps Sarah Durphy	Webinar

Jul. 1, 2021	Seismic Evaluation of Older Concrete Buildings for Collapse Potential (FEMA P-2018)	Bill Holmes Abbie Liel	Webinar

Jun. 2, 2021	ATC Design Guide 2, Basic Wind Engineering for Low-Rise Buildings	Bill Coulbourne	ATC Webinar

Mar. 31, 2021	Introduction to ASCE/SEI 41, Seismic Evaluation and Retrofit of Existing Buildings	Bret Lizundia	Webinar

Jan. 27, 2021	Improving Earthquake Performance of Manufactured Homes	Kelly Cobeen	Webinar

Dec. 16, 2020	NEHRP Technical Brief No. 12, Seismic Design of Cold-Formed Steel Lateral Load-Resisting Systems – A Guide for Practicing Engineers	Rob Madsen Justin Moresco	ATC Webinar

Sept. 23, 2020	Post-disaster Building Safety Evaluation Guidance (FEMA P-2055)	Bret Lizundia Ayse Hortacsu	Free NETAP* Webinar

Jun. 10, 2020	Reducing the Risks of Nonstructural Earthquake Damage—A Practical Guide, Fourth Edition (FEMA E-74)	Ed Huston	Free NETAP* Webinar

Mar. 19, 2020	Introduction to ASCE/SEI 41, Seismic Evaluation and Retrofit of Existing Buildings (FEMA P-2006)	Bret Lizundia	Free NETAP* Webinar

Dec. 12, 2019	Incremental Seismic Rehabilitation of School Buildings (K-12) (FEMA 395)	Mike Griffin	Free NETAP* Webinar

Sep. 12, 2019	Earthquakes and Safer, Stronger, Smarter: A Guide to Improving School Natural Hazard Safety (FEMA P-1000)	Lori Peek Jason Ballman Jill Barnes Ted Wolf	Free NETAP* Webinar

Aug. 28, 2019	FEMA P-58 In-Person Training Seminar: Seismic Performance Assessment of Buildings, Methodology and Implementation	Ron Hamburger, Curt Haselton, Jon Heintz, John Hooper, Mike Mahoney, Ron Mayes, Vesna Terzic	In-Person Training

Jun. 12, 2019	FEMA P-50 and FEMA P-50-1, Simplified Seismic Assessment and Retrofit Guidelines for Detached, Single-Family, Wood-Frame Dwellings	Kelly Cobeen	Free NETAP* Webinar

Mar. 27, 2019	Improving Earthquake Performance of Manufactured Homes	Kelly Cobeen	Free NETAP* Webinar

Mar. 13 & 20, 2019	2019 Spring Seminar: FEMA P-2006 - ASCE 41 Design Examples	Bret Lizundia, Brian McDonald, Mark Moore, Ron LaPlante, Mike Braund	In-Person Training

Mar. 7, 2019	Post-earthquake Response and Recovery plenary workshop presented by Bret Lizundia, Rutherford + Chekene, ATC Project Technical Director DRRA 1241 (ATC-137-2) Project	Bret Lizundia	Plenary Workshop

Mar. 7, 2019	Post-earthquake Response and Recovery technical session presented by Ayse Hortacsu, ATC Director of Projects	Ayse Hortacsu	Technical Session

Mar. 5, 2019	Introduction to FEMA P-2006: Example Application Guide for ASCE/SEI 41-13 Seismic Evaluation and Retrofit of Existing Buildings with Additional Commentary for ASCE/SEI 41-17	Bret Lizundia, Ron LaPlante	In-Person Training

Nov. 29, 2018	FEMA P-58 Training in Seattle	Ron Hamburger, Jon Heintz, John Hooper, Vesna Terzic	In-Person Training

Nov. 12-14, 2018	17th U.S.-Japan-New Zealand Workshop on the Improvement of Structural Engineering and Resilience	See more	In-Person Workshop

Sep. 6, 2018	Safer, Stronger, Smarter: A Guide to Improving School Natural Hazard Safety (FEMA P-1000)	Lori Peek	Free NETAP* Webinar

Jun. 6, 2018	Building Codes - Why they Matter	Mike Griffin	Free NETAP* Webinar

Apr. 25, 2018	Seismic Evaluation and Retrofit of Multi-Unit Wood-Frame Buildings with Weak First Stories (FEMA P-807)	David Mar, Mike Korolyk	Free NETAP* Webinar

Mar. 7, 2018	Reducing the Risks of Nonstructural Earthquake Damage - A Practical Guide (FEMA E-74)	Mike Griffin	Free NETAP* Webinar

About *NETAP. Instructor services and expenses for these trainings are funded by the Federal Emergency Management Agency (FEMA) National Earthquake Technical Assistance Program (NETAP), which is a mechanism for delivering direct assistance to the public to increase their knowledge and ability to analyze their risk, make a plan, and take actions aimed at reducing their earthquake risk and supporting overall community resilience. NETAP is a program managed by FEMA to rapidly deploy training and technical assistance to organizations and communities.

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Below you can find the latest news from ATC. Check back often for updates.

News Releases

Organizational News

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The placards and forms can be downloaded at no cost here

The mission of the Applied Technology Council is to develop engineering applications and resources for mitigating the effects of natural and other hazards on the built environment. Major ATC-developed efforts completed to date have resulted in a broad range of products, including comprehensive engineering guidelines, design guides and technical briefs, seminar and workshop proceedings, and databases. Until the mid 1990s, ATC’s efforts focused largely on earthquake engineering applications and resources, but since then ATC’s focus has expanded to include studies and development of guidelines for wind and flood hazard mitigation.

Many of the products prepared by ATC since its founding in 1973 are available for purchase through the ATC Online Store, and some can be downloaded free of charge through this web site. As time progresses, we expect more products to be available in downloadable electronic format. Future products will include (1) updated mobile technology applications for disaster mitigation, including pre- and post-earthquake evaluation applications using smart phones and other information technology devices, as they emerge; (2) searchable versions of historically iconic ATC reports, such as ATC-3, Tentative Provisions for the Development of Seismic Regulations for Buildings; (3) webinars on recently developed engineering guidelines and other newly developed ATC products, and (4) downloadable training seminars/lectures to facilitate postdisaster safety evaluation of buildings and to train practicing structural engineers on other important hazard mitigation issues.

More than 100 major products are now available through the ATC website. As indicated in the following table, most are available through the ATC Online Store, but some are available as free downloads.


Product Type	Free Downloads	For Sale through Online Store
Benefit-Cost Studies
Briefing Papers on Rudimentary Earthquake Hazard Reduction Issues (intended for lay persons as well as architect, engineers, and building inspectors)
Building Post disaster Safety Evaluation Forms and Placards
Building Surveys
Code Commentaries
Databases of Building and Lifeline Structures
Design Guides (brief, focused reports)
Earthquake Damage and Loss Estimation Methods
Engineering Design and Evaluation Guidelines, Resources, and Recommendations (includes ATC-prepared reports published by FEMA and NIST, including technical basis reports) ¹
Laboratory Testing Protocols
Performance, Methods, and Criteria Evaluation Reports
Proceedings of ATC Seminars, Workshops, and Conferences
Program Plans for Federal Agency Hazard Reduction Efforts
Reconnaissance Reports of Natural Disasters
Research Implication Studies
Research Needs and Equipment Evaluation Reports
SAC² Background Reports on the Seismic Performance of Steel Moment Frame Buildings
Technical Briefs (Tech Briefs)
Training Curricula and Slide sets

¹Currently only a small number of FEMA-sponsored and NIST-sponsored ATC-prepared guidelines can be downloaded
²A partnership of the Structural Engineers Association of California, ATC, and California Universities for Research in Earthquake Engineering (now the Consortium of Universities for Research in Earthquake Engineering)

You can order or download ATC products using the links below.

ATC Online Store

Subscription Program

On-demand Training

Downloadable Products

Order Policies

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ATC-20 Placards

ATC-45 Placards

FEMA 154 (Second Edition) Data Collection Forms

FEMA P-154 (Third Edition) Data Collection Forms

ATC-20 Building Safety Evaluation Forms and Placards

In 1989, with funding from the California Office of Emergency Services, California Office of Statewide Health Planning and Development, and the Federal Emergency Management Agency, the Applied Technology Council (ATC) published the ATC-20 Procedures for Postearthquake Safety Evaluation of Buildings, and companion ATC-20-1 Field Manual: Postearthquake Safety Evaluation of Buildings, Second Edition (revised in early 2005). Written specifically for volunteer structural engineers and building inspectors, these reports include rapid and detailed evaluation procedures for evaluating earthquake-damaged buildings and posting them as INSPECTED (apparently safe, green placard), LIMITED ENTRY (yellow placard), or UNSAFE (red placard). In 1995, with funding from the National Science Foundation and the U. S. Geological Survey, ATC published the ATC-20-2 report, Addendum to the ATC-20 Postearthquake Building Safety Evaluation Procedures, which contains updates to the ATC-20 procedures, including a revised Rapid Evaluation Safety Assessment Form, a revised Detailed Evaluation Safety Assessment Form, and revised red, yellow (RESTRICTED USE) and green placards. In 1997, ATC published the ATC-20-3 report, Case Studies in Rapid Postearthquake Safety Evaluation of Buildings, which contains 53 in-depth case studies illustrated with photos and describing how buildings are inspected and evaluated for safety. The ATC-20-3 report has been designed as an instructional guide for rapid evaluation.

Available here are the revised versions of the ATC-20 Rapid and Detailed Evaluation safety assessment forms, the revised posting placards, and Appendix A: Guidance for Owners and Occupants of Damaged Buildings. The forms and placards have been made available here, primarily to facilitate their rapid dissemination in any emergency, but also for instructional purposes. Turkish language versions are also available.

pdf ATC 20-2 Rapid Evaluation Safety Assessment Form (revised, 2005)

pdf ATC 20-2 Detailed Evaluation Safety Assessment Form (revised, 2005)

pdf ATC-20 Fixed Equipment Checklist

ATC 20-2 Revised green INSPECTED placard

pdf ATC 20-2 Revised yellow RESTRICTED USE placard

pdf ATC 20-2 Revised yellow RESTRICTED USE placard with preprinted instructions

pdf ATC 20-2 Revised red UNSAFE placard

pdf ATC 20-2 Appendix A: Guidelines for Owners and Occupants of Damaged Buildings

Turkish Language Versions of Placards

pdf ATC 20-2 Revised green INSPECTED placard

pdf ATC 20-2 Revised yellow RESTRICTED USE placard

pdf ATC 20-2 Revised yellow RESTRICTED USE placard with preprinted instructions

pdf ATC 20-2 Revised red UNSAFE placard

acrobat click here to download Adobe Reader

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ATC-45 Field Manual: Safety Evaluation of Buildings after Windstorms and Floods

The Applied Technology Council (ATC) is pleased to announce the immediate availability of the ATC-45 Field Manual: Safety Evaluation of Buildings after Windstorms and Floods. Funded by the Applied Technology Council, the ATC Endowment Fund, and the Institute for Business and Home Safety, this 132-page report provides guidelines and procedures for conducting postwindstorm and postflood building safety evaluations. The purpose of these evaluations is to determine whether damaged or potentially damaged buildings are safe for use, or if entry should be restricted or prohibited.

The ATC-45 Field Manual is intended to be used by building officials, building inspectors, engineers, and others involved in postdisaster safety evaluation of building types commonly found in the United States. The Field Manual explains three different building safety evaluation procedures. Two of the procedures (Rapid Evaluation and Detailed Evaluation) are discussed in detail. For each of these procedures, the document provides guidance on where to look for damage.

The Field Manual gives advice on evaluating structural, geotechnical, and nonstructural risks, and advice on how to rate the safety significance of certain types of damage. In addition, the Manual covers related topics of interest to safety personnel, including (a) how to deal with owners and occupants of damaged buildings, and (b) field safety issues. Evaluation forms and posting placards, represented in the document in small-scale size, can be downloaded free of charge below.

The Field Manual is patterned after the concepts developed in two earlier ATC projects: (1) the ATC-20 project, whereby ATC developed the well known and widely used ATC-20 report, Procedures for Postearthquake Safety Evaluation of Buildings; companion ATC-20-1 Field Manual, and ATC-20-2 Addendum, which contains updated evaluation forms and placards; and (2) the ATC-26 project, whereby ATC developed several sets of procedures for postdisaster safety evaluation of U. S. Postal Service (USPS) facilities, including procedures for safety evaluation of USPS facilities after windstorms and floods.

The ATC-45 Field Manual has been printed in an easy-to-use, pocket-sized format. The document can be obtained from the Applied Technology Council, 201 Redwood Shores Parkway, Suite 240, Redwood City, California 94065 (phone, 650-595-1542; fax, 650-593-2320; e-mail, This email address is being protected from spambots. You need JavaScript enabled to view it.). Price: $27.00 per copy (plus shipping and sales tax where applicable).

ATC-45 may also be ordered in the Applied Technology Council Online Store.

The following are available for immediate download in PDF format:

pdf ATC-45 Rapid Evaluation Safety Assessment Form

pdf ATC-45 Detailed Evaluation Safety Assessment Form

pdf ATC-45 Fixed Equipment Checklist

pdf ATC-45 UNSAFE Posting Placard (print on red cardstock)

pdf ATC-45 RESTRICTED USE Posting Placard (print on yellow cardstock)

pdf Alternate ATC-45 RESTRICTED USE Posting Placard with preprinted instructions (print on yellow cardstock)