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Search Publications by: Marc Levitan (Fed)

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Displaying 1 - 24 of 24

Tornado Wind Speed Maps for Building Design: Research and Development of Tornado Risk Assessment Methodology

October 2, 2023
Author(s)
Lawrence A. Twisdale, Sudhan S. Banik, Lauren A. Mudd, Marshall Hardy, Shahriar Quayyum, Fangqian Liu, Melissa K. Faletra, Peter J. Vickery, Marc Levitan, Long Phan
The first-ever engineering-derived tornado wind speed maps have been produced for the contiguous United States. Using multi-variate statistical analysis of 11 tornado and physiographic variables, we developed 9 broad tornado climatology regions. We

Design Guide for New Tornado Load Requirements in ASCE 7-22

January 30, 2023
Author(s)
Erik Perfetto, James Taylor, Karah Osburn, Brian O'Connor, Marc Levitan, Jennifer Mitchell
This instructional guidance is for design professionals and building officials to help them determine when a building or other structure is required to be designed to minimum tornado loads and how to calculate design tornado forces. This guide is in

Development and Analysis of a Database of Tornado Impacts on U.S. Critical Facilities

May 17, 2022
Author(s)
Nicholas de Toledo, Marc Levitan, Jamil Malik, Warren Stewart, Katherine Johnson, Patrick Crawford
Despite the significant hazard that tornadoes pose, much remains to be learned about the impacts of tornadoes on critical facilities in the United States. While a number of post-storm reports have documented the damage from individual tornadoes or tornado

Aprendiendo de los impactos del huracan Maria en Puerto Rico: Un informe de progreso

January 19, 2021
Author(s)
Joseph Main, Maria K. Dillard, Erica D. Kuligowski, Benjamin Davis, Jazalyn D. Dukes, Kenneth W. Harrison, Jennifer Helgeson, Katherine J. Johnson, Marc L. Levitan, Judith Mitrani-Reiser, Scott J. Weaver, DongHun Yeo, Luis D. Bermudez, Joel Cline, Thomas Kirsch
El 20 de septiembre de 2017, el huracán María tuvo un impacto devastador en gran parte de Puerto Rico, dañando edificios de los que dependían sus comunidades para atención médica, seguridad, comunicaciones, educación, negocios y más. Para comprender mejor

Learning from Hurricane Maria's Impacts on Puerto Rico: A Progress Report

January 19, 2021
Author(s)
Joseph Main, Maria K. Dillard, Erica D. Kuligowski, Benjamin Davis, Jazalyn D. Dukes, Kenneth W. Harrison, Jennifer Helgeson, Katherine J. Johnson, Marc L. Levitan, Judith Mitrani-Reiser, Scott J. Weaver, DongHun Yeo, Luis D. Bermudez, Joel Cline, Thomas Kirsch
On September 20, 2017, Hurricane Maria devastated much of Puerto Rico, damaging buildings that its communities relied upon for medical care, safety, communications, education, business, and more. To better understand failures in buildings and

Research Needs to Support Immediate Occupancy Building Performance Following Natural Hazard Events

August 21, 2018
Author(s)
Siamak Sattar, Therese P. McAllister, Katherine J. Johnson, Christopher T. Clavin, Christopher L. Segura, Steven L. McCabe, Juan F. Fung, Leslie Abrahams, Emily Sylak-Glassman , Marc L. Levitan, Kenneth W. Harrison, John L. Harris
The performance of buildings in our communities depends on multiple factors including the availability of supporting infrastructure, the original design, the current condition and capacity to resist hazard impacts, and the ability to recover functionality

Calibration of Dynamic Pressure in a Tubing System and Optimized Design of Tube Configuration: A Numerical and Experimental Study

June 12, 2018
Author(s)
Matthew Kovaerk, Luke Amatucci, Keith A. Gillis, Florian Potra, James Ratino, Marc L. Levitan, DongHun Yeo
Accurate prediction of aerodynamic pressures on a building is a key factor in the estimation of wind loads on the building. Since the analytical approach has limited capacity in providing pressure estimates, wind tunnel testing is widely used. The

Maps of Non-hurricane Non-tornadic Wind Speeds With Specified Mean Recurrence Intervals for the Contiguous United States Using a Two-Dimensional Poisson Process Extreme Value Model and Local Regression

November 12, 2015
Author(s)
Adam L. Pintar, Emil Simiu, Franklin T. Lombardo, Marc L. Levitan
This report describes a procedure for creating maps of non-hurricane, non-tornadic wind speeds for a set of recurrence intervals of interest between \num{10} and \num{100000} years over the contiguous United States. The procedure is carried out in two

Final Report, National Institute of Standards and Technology (NIST) Technical Investigation of the May 22, 2011, Tornado in Joplin, Missouri

March 26, 2014
Author(s)
Erica D. Kuligowski, Franklin T. Lombardo, Long Phan, Marc L. Levitan, David P. Jorgensen
This is the final report of the National Institute of Standards and Technology (NIST) investigation of the May 22, 2011 tornado in Joplin, Missouri, conducted under the National Construction Safety Team Act. This report describes the wind field of the

Preliminary Reconnaissance of the May 20, 2013, Newcastle-Moore Tornado in Oklahoma

December 3, 2013
Author(s)
Erica D. Kuligowski, Long Phan, Marc L. Levitan, David P. Jorgensen
This is a report on the National Institute of Standards and Technology (NIST) reconnaissance to collect information on the performance of one critical facility and two educational facilities in the May 20, 2013, Newcastle-Moore tornado in Oklahoma. The

Practical CFD Simulations of Wind Tunnel Tests

December 1, 2013
Author(s)
Dilip K. Banerjee, Scott Hemley, Randall J. McDermott, Donghun Yeo, Marc L. Levitan
Computational fluid dynamics (CFD) has the potential of replacing wind tunnel testing in many wind engineering applications. Validated CFD software could enable structural engineers and builders to calculate wind effects on buildings for which no

Draft Final Report, National Institute of Standards and Technology (NIST) Technical Investigation of the May 22, 2011, Tornado in Joplin, Missouri (NIST NCSTAR 3) ***Draft for Public Comments***

November 21, 2013
Author(s)
Erica D. Kuligowski, Franklin T. Lombardo, Long Phan, Marc L. Levitan, David P. Jorgensen
This is the final report of the National Institute of Standards and Technology (NIST) investigation of the May 22, 2011, tornado in Joplin, Missouri, conducted under the National Construction Safety Team Act. This report describes the wind field of the

Progress Report National Institute of Standards and Technology (NIST); Technical Investigation of the May 22, 2011, Tornado in Joplin, Missouri (NISTSP 1139)

November 15, 2012
Author(s)
Erica D. Kuligowski, Franklin T. Lombardo, Long Phan, Marc L. Levitan, David P. Jorgensen
On June 29, 2011, the National Institute of Standards and Technology (NIST) announced that it would conduct a technical investigation of the tornado that struck Joplin, MO, on May 22, 2011. In November 2011, NIST released a draft plan for the study and

NIST ADVANCES IN COMPUTER-AIDED AND COMPUTATIONAL METHODS IN WIND ENGINEERING

October 19, 2012
Author(s)
Dong Hun Yeo, Franklin T. Lombardo, Dilip K. Banerjee, Eric J. Letvin, Emil Simiu, Marc L. Levitan, Florian A. Potra
The paper summarizes recent research and development of computer-aided and computational methods in wind engineering at the National Institute of Standards and Technology (NIST). Specific topics to be covered include: 1. Time-domain database-assisted

Investigation Plan - National Institute of Standards and Technology (NIST) Technical Investigation of Building and Emergency Communications System Performance in the Joplin, Missouri, Tornado of May 22, 2011

May 24, 2012
Author(s)
Marc L. Levitan, Long T. Phan, Erica D. Kuligowski, Franklin T. Lombardo, David P. Jorgensen
Following the May 22, 2011 tornado that devastated the City of Joplin, NIST sent four engineers to Missouri on May 24 through May 28 to conduct a preliminary reconnaissance. Based on analysis of the data collected and other criteria required by law and