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Mitigation Assessment Team Report
Mitigation Assessment Team Report Hurricanes Irma and Maria in Puerto Rico Building Performance, Observations, Recommendations, and Technical Guidance FEMA P-2020 / October 2018 Any opinions, findings, conclusions, or recommendations expressed in this publication do not necessarily reflect the views of FEMA. Additionally, neither FEMA nor any of its employees makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, product, or process included in this publication. Users or information from this publication assume all liability arising from such use. All photographs and figures used in this report were taken by the Mitigation Assessment Team (MAT) or developed for this report unless stated otherwise. Map imagery sources (unless otherwise noted in the report): CariCOOS https://www.caricoos.org/ USGS https://www.usgs.gov/ Weather Flow http://weatherflow.com NSF RAPID https://nsf.gov NOAA https://storms.ngs.noaa.gov/ MITIGATION ASSESSMENT TEAM REPORT Hurricanes Irma and Maria in Puerto Rico Building Performance Observations, Recommendations, and Technical Guidance FEMA P-2020 / October 2018 Members of the Mitigation Assessment Team Team Leaders Team Managers Daniel Bass, RA, CFM, FEMA HQ Stuart Adams, EI, CFM, Stantec Edward Laatsch, PE, FEMA HQ Scott Tezak, PE, BSCP, Atkins Team Members Luis Aponte Bermúdez, PhD, PE Ancuta Lungu, FEMA HQ Roberto Alsina, Diversity Professional Services, LLC Andrew Martin, CFM, FEMA Region II Erin Ashley, PhD, LEED AP, Atkins Desidero Maldonado, PE, Atkins Dana Bres, PE, Department of Housing and Urban Jeanine Neipert, FEMA HQ Development Juan Nieves, EI, CFM, Dewberry David Conrad, PE, Atkins John “Bud” Plisich, FEMA Region IV Astrid Diaz, RA, ADV Architects Rebecca Quinn, CFM, RCQuinn Consulting, Inc. -
Hydraulic Structures – Learning from Recent (Partial) Failures and the Opportunities They Present
8th IAHR ISHS 2020 Santiago, Chile, May 12th to 15th 2020 DOI: 10.14264/uql.2020.515 Keynote Lecture: Hydraulic Structures – Learning from Recent (Partial) Failures and the Opportunities They Present Mike Phillips1 1U.S. Army Corps of Engineers Risk Management Center Lakewood, Colorado USA E-mail:[email protected] ABSTRACT There have been numerous partial, near, or complete failures of hydraulic structures on dams around the globe over the past 10 years. I have been fortunate in my consulting and US Army Corps of Engineers (USACE) career to have contributed to the post-failure analysis and design of the repair for many of these dams and structures throughout the world. Out of these (and other) hydraulic structure failures, come great opportunities to learn, teach, mentor, and apply lessons learned to future projects. The purpose of this paper is to highlight three case studies of partial or near complete failure of hydraulic structures that I have been involved in as part of USACE including: 1) the USACE Review of Spillways – post Oroville Dam; 2) the Guajataca Dam Spillway Repair; and 3), the Mosul Dam Bottom Outlet Flip Bucket Dentates commissioning In this paper, I will discuss why sharing these case studies is one way we maintain safe and operational structures for society and industry, and is an important component to allowing the dam safety community to learn from hydraulic structure failures, and why mentoring is critical to the future of hydraulic structure design and operation. Keywords: Failure, hydraulic structures, case studies, mentoring 1. INTRODUCTION Over the past 10 years, there have been multiple hydraulic structure failures for dams in many locations around the world, as listed below. -
Geotechnical Extreme Event Site Reconnaissance in Puerto Rico After the Passage of Hurricane Maria
Geotechnical Extreme Event Site Reconnaissance in Puerto Rico After The Passage of Hurricane Maria Francisco Silva-Tulla, Consulting Civil Engineer, GeoEngineering and Environment, Lexington, Massachusetts, U.S.A.; email: [email protected] Miguel A. Pando, Associate Professor, Department of Civil, Architectural, and Environmental Engineering, Drexel University, Philadelphia, PA, 19104, U.S.A.; email: [email protected] ABSTRACT: The National Weather Service classified Hurricane Maria as a strong Category 4 Hurricane on the Saffir- Simpson hurricane wind scale at the time of its landfall in Yabucoa, Puerto Rico, U.S.A., on September 20, 2017. The immediate aftermath of Hurricane Maria was a devastated island with at least 64 people killed, severe infrastructure loss, a devastated electric power grid, and numerous geotechnical failures related to the intense rainfall and strong winds associated to this extreme event. This paper will summarize the event timeline and the geotechnical consequences of Maria’s path across Puerto Rico. The impacts of Hurricane Maria on infrastructure and geomorphology are documented through the data and observations of the engineers and geologists that comprised the Geotechnical Extreme Events Reconnaissance (GEER) team. The main reconnaissance mission took place between October 25 and November 6, 2017, followed by a second field component involving terrestrial LiDAR surveys and UAV photogrammetry performed January 8 to 11, 2018. This paper summarizes observations on geotechnical impacts such as: the Guajataca Dam spillway failure, coastal erosion events (including foundation failures due to coastal erosion in Córcega, Rincón), bridge abutment scour failures, over 2,000 landslides along the PR highway system (e.g., along the PR-10, region of Lares, Barranquitas and Utuado); foundation failures, and other failures related to this destructive hurricane.