Team
At Protection Engineering Consultants, each team member brings considerable experience and deep expertise in protecting people, systems and built environments through applied research and protective design.
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Matt Barsotti
Senior Engineer, Principal
Senior Engineer, Principal
Matt Barsotti
Matt Barsotti's general areas of expertise include mechanical design, numerical modeling, system optimization and energy-absorbing systems. He has served as principal investigator on projects for a variety of government, military and commercial clientele, including the Technical Support Working Group (TSWG), the Defense Advanced Research Projects Agency (DARPA) and the Transportation Research Board (TRB/ACRP). Matt was principal investigator for PEC’s alternative aircraft arrestor system development for the TRB/ACRP.
Other research efforts include characterization of shock-mitigating systems for armored vehicles, foam material development for anti-personnel doorway barriers, and development of frequency-filtering helmet materials to reduce traumatic brain injury (TBI). Matt earned a Master of Science degree in Mechanical Engineering from the University of Texas at San Antonio and a Bachelor of Engineering degree with a Mechanical Emphasis from John Brown University.
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Edward Conrath, P.E.
Senior Principal
Senior Principal
Edward Conrath, P.E.
Ed Conrath, a long-time security engineering expert with the U.S. Army Corps of Engineers, joined Protection Engineering Consultants as Senior Principal in April 2008.
Assigned to the U.S. Army Corps of Engineers Protective Design Center from 1985 to 2008, Ed has been at the leading edge of protecting people and structures from the effects of terrorist attacks in the United States and around the world. He is a leading analyst and developer of security design guidelines and has performed more than 100 building vulnerability assessments in the U.S. and over 20 countries throughout the world, including assessments in the high-threat environments of Iraq and Afghanistan.
Ed completed two rotational assignments in Baghdad, providing support to U.S. and coalition forces. In this capacity, he performed vulnerability assessments and worked with local architects and material vendors to produce blast-mitigating products locally, allowing for rapid and cost-effective protection of U.S. and Iraqi personnel. His work was profiled in the January 2004 Engineer Update published by the Corps of Engineers.
Ed has conducted post-blast investigations in Iraq, Kuwait and Saudi Arabia, and he provided support to U.S. federal agencies after the 1995 Oklahoma City bombing attack. He also served as a United Nations inspector in Baghdad following the 1991 Gulf War.
Prior to his security engineering duties, Ed worked as a structural engineer on the Air Launch Cruise Missile Support Facilities and on the Underground Munitions Storage Complex at Kirtland AFB in New Mexico.
A 1977 graduate of the University of Nebraska at Omaha, Ed holds a Bachelor of Science degree in Civil Engineering. He is a registered Professional Engineer in the state of Nebraska, a member of the Society of American Military Engineers (SAME), the American Society of Civil Engineers (ASCE), the local chapter of the American Concrete Institute (ACI), and ASTM International, for which he is the committee chairman of F12.
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Kirk Marchand, P.E.
Managing Principal
Managing Principal
Kirk Marchand, P.E.
For 25 years, Kirk Marchand has performed research and managed small and large-scale projects in facility and building security, blast-resistant design and analysis, threat assessment and vulnerability analysis, and security engineering for government agencies and commercial enterprises.
Kirk has held key leadership positions at Walter P. Moore, Applied Research Associates and Southwest Research Institute. A graduate of Texas A&M University, he began his career as an active duty U.S. Army Corps of Engineers officer and research engineer.
Kirk has authored or co-authored and presented numerous research reports, guidelines and published articles, and he holds or shares five U.S. patents. He has chaired or served on technical committees of the American Concrete Institute, American Society of Civil Engineers, ASTM International, and American Institute of Steel Construction.
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Aldo McKay, P.E.
Project Engineer and Principal
Project Engineer and Principal
Aldo McKay, P.E.
Aldo McKay has more than six years of experience in the fields of security and protection engineering, including blast-resistant design and analysis of structures, progressive collapse analysis and mitigation concept development, and vulnerability assessment of civilian and government facilities.
Aldo regularly manages numerous design projects supporting DoD facilities subject to the requirements of UFC 4-010-01, and he has expertise in the design of window systems and supporting elements for those facilities. Aldo earned a bachelor’s degree in engineering from John Brown University and a Master of Science degree in Structural Engineering from the University of Texas at San Antonio.
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Charles Oswald, Ph.D.,P.E.
Senior Principal
Senior Principal
Charles Oswald, Ph.D.,P.E.
Dr. Chuck Oswald has over 20 years of experience in the areas of blast effects and structural response to blast loads. He has designed and analyzed government and commercial facilities, explosive manufacturing bays, and blast containment chambers subject to a wide variety of explosive threats. He has investigated numerous accidental explosions and managed test programs studying structural component response to explosive loads.
Chuck has developed several blast-effects analysis applications, including the FACEDAP and CEDAW programs that quickly assess blast damage to conventionally constructed buildings using P-i diagrams, and the SBEDS software that calculates response of blast-loaded components. He also developed the BICADS program that predicts injuries to occupants of blast-loaded buildings. Chuck has considerable experience in explosive hazards analysis and assessment, including analyses of fragments, building debris, and blast-related hazards to personnel from accidental explosions.
Chuck has served on a National Academy of Science committee to assess blast design criteria for government buildings and has presented numerous papers on structural response to blast, blast pressure prediction, explosion safety studies, fragment dispersion analyses, and injuries to occupants of blast-loaded buildings. An instructor in short courses in these areas, he has been a staff member at the University of Texas at San Antonio. He earned a doctorate in structural engineering from The University of Texas at Austin.
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David Stevens, Ph.D., P.E.
Senior Principal
Senior Principal
David Stevens, Ph.D., P.E.
Dr. David Stevens has 20 years of experience in the design, testing and analysis of structures subjected to extreme dynamic loads. Over the past 10 years, he has performed numerical modeling studies of blast and impact-loaded armored vehicles and hardened structures, vehicle impact of countermobility barriers, and collisions between locomotives and nuclear waste containers. He has conducted explosive tests on building walls, windows, military shelters, protective barriers, blast walls, and armored and unarmored vehicles.
Previously a principal engineer at Applied Research Associates, Dave has conducted research and design for Southwest Research Institute and LTV Aerospace. He has taught undergraduate and graduate-level engineering courses, is a frequent presenter at industry conferences, and has written and edited numerous research reports and articles for peer-reviewed journals and proceedings publications. He holds or shares five U.S. patents.
Dave earned a Bachelor of Arts degree in Physics from Hope College, Bachelor of Science and Master of Science degrees in Civil Engineering from Clemson University, and a doctorate in civil engineering from the University of Minnesota. He has served on committees of the American Concrete Institute, which honored him in 2008 with the rank of Fellow, and the American Society of Civil Engineers.
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Chris Davis
Business Analyst
Business Analyst
Chris Davis
Chris Davis joined Protection Engineering Consultants as a Business and Financial Analyst in April 2010, bringing experience from the financial services industry. As business analyst, he provides accounting, finance, human resources and contract support. Chris earned a Bachelor of Business Administration degree in Finance from the University of Texas at Austin, and he is pursuing a master’s degree in business administration at the University of Texas at Austin McCombs Business School.
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Ellen Marchand
Director of Support Services
Director of Support Services
Ellen Marchand
Ellen Marchand joined Protection Engineering Consultants in 2008 as Director of Support Services, having served in a number of capacities, part-time, since the company's establishment in 2006. Ellen provides accounting, purchasing, subcontracting and employee benefits support for Protection Engineering Consultants.
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Ryan Alberson
Associate Engineer
Associate Engineer
Ryan Alberson
Ryan Alberson joined Protection Engineering Consultants as Associate Engineer in June 2009. He earned Bachelor of Science and Master of Science degrees in Civil Engineering from Texas A&M University. Skilled in model development for LSDYNA analysis, Ryan is actively involved in blast-resistant design and evaluation of existing structures for vulnerability to progressive collapse for Protection Engineering Consultants' DoD and GSA clients.
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Marlon Bazan, Ph.D.
Project Engineer
Project Engineer
Marlon Bazan, Ph.D.
Dr. Marlon Bazan joined Protection Engineering Consultants as Project Engineer in February 2009. He provides support on various research and design projects, including blast analysis and design of walls and window systems for various DoD and GSA building projects. His fields of interest and expertise include nonlinear static and dynamic analysis of structures, progressive collapse analysis and design, structural testing, as well as structural reliability and probabilistic methods.
Marlon earned a bachelor’s degree in civil engineering from the National University of Engineering (Lima, Peru) and a Master of Science degree and doctorate in Structural Engineering from Northeastern University (Boston, Mass.), where he conducted experimental and analytical studies on the response of RC structures following the loss of load-bearing elements. His research and dissertation focused on the development of compressive and tensile membrane actions of reinforced concrete beams bridging over removed columns.
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Patricia Bowles
Staff Scientist
Staff Scientist
Patricia Bowles
With more than 30 years of expertise in blast and fragment hazards prediction and analysis, Trish Bowles joined Protection Engineering Consultants in October 2008.
She began her career in 1977 at Southwest Research Institute (SwRI), followed by eight years at the Advanced Technology Office for Applied Research Associates, Inc. Trish has managed numerous projects in the area of blast and fragment hazards prediction for explosives safety studies and hazards analyses, including the development of the DISPRE model, the expanded DISPRE2 model, and the ESAS model. In addition, she has developed a fragment penetration model for soft targets, conducted impact tests for the design of vehicle armors, and developed a mobile, lightweight doorway barrier to prevent enemy access or egress.
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Carrie Davis
Sr. Associate Engineer
Sr. Associate Engineer
Carrie Davis
Carrie Davis performs blast-resistant analysis, design and testing for a variety of projects at Protection Engineering Consultants.
Carrie's recent work includes assessment of polymer reinforced masonry walls exposed to blast loads. She was instrumental in coordinating PEC efforts in the development of a static test capability for glass at the Austin office, and she has supervised blast tests of retrofitted glass assemblies in cooperation with Southwest Research Institute (SwRI). Glass static and blast test results for monolithic and retrofitted glass have supported development of a glass response model soon to be incorporated into the SBEDS software.
Carrie earned a Bachelor of Science degree in Architectural Engineering and a Master of Science degree in Civil Engineering from the University of Texas at Austin. Her research and thesis at UT focused on the development of blast-resistant design and detailing guidelines for reinforced concrete bridge columns.
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Matthew Gomez
Associate Engineer
Associate Engineer
Matthew Gomez
Matthew Gomez joined Protection Engineering Consultants as Associate Engineer in January 2010.
Matt earned a Bachelor of Science degree in Civil Engineering from the University of Texas at San Antonio and a Master of Science degree in Structural Engineering from the University of California at Berkeley in 2008. Matt previously served as a structural engineer for an Austin, Texas, design firm where he performed design and detailing of structural systems and construction administration duties. At Protection Engineering Consultants, his work includes blast-resistant design and detailing for structures, and he is involved in research of main lateral force resisting systems against blast loads.
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Cliff Jones
Associate Engineer
Associate Engineer
Cliff Jones
Cliff A. Jones joined Protection Engineering Consultants as an Associate Engineer in January 2011. Cliff joins our design and research team with expertise in blast and physical security design for DoD ATFP applications and designs and with experience in development and investigation of novel materials for blast and impact resistance. Cliff has BS and MS degrees in structural engineering from Lehigh University. He has EIT and LEED Green Associate credentials. Cliff currently contributes to projects dealing with ATFP criteria and design, hazards research, and materials development.
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Lawrence Nelson
Sr. Associate Engineer
Sr. Associate Engineer
Lawrence Nelson
L.J. Nelson joined Protection Engineering Consultants as an Associate Engineer after completing his bachelor’s degree in civil engineering from Texas A&M University and serving as an infantryman in the United States Marine Corps during Operation Iraqi Freedom II. In Iraq, L.J. supported base security operations and assisted in the training of Iraqi security forces. At Protection Engineering Consultants, he has coordinated activities in support of an overseas facility security upgrade project for a customer in Kabul, Afghanistan. He also supports blast design for U.S. DoD facility upgrades and research activities for the development of frangible window systems for blast loads. L.J. is pursuing a master’s degree in structural engineering at the University of Texas at San Antonio.
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John Puryear
Sr. Associate Engineer
Sr. Associate Engineer
John Puryear
John Puryear provides research, structural analysis and design and testing support for various PEC projects.
John designed and supervised the fabrication and construction of test structures used in blast tests of retrofitted CMU walls for a commercial sponsor. He also supports recent research efforts for development of controlled release panels for blast applications and in evaluation of candidate systems for pipeline protection. He has supported DoD and DTRA efforts in the development of updated progressive collapse criteria through assessment of the post-blast performance of steel connections. John earned a Master of Science degree in Structural Engineering from the University of Texas in 2007.
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Erick Sagebiel
Senior Engineer
Senior Engineer
Erick Sagebiel
Erick J. Sagebiel joined PEC as a Senior Engineer in April of 2011. Erick brings over 10 years of significant and broad computational modeling expertise that will benefit our numerical analysis activities and team at PEC. Erick’s expertise includes experimental evaluation and numerical analysis of armored vehicles, ballistic and blast threats, and has developed numerical simulations with materials as diverse as glass, ceramics, aluminum alloys, fabrics and asteroid materials. His code experience includes LSDYNA, EPIC and CTH. He has developed concepts for new armor and warhead designs, has developed test fixtures for landmine vehicle attacks, has designed blast test chambers, with numerical analysis supporting all of these activities.