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.

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 former committee chairman of F12 and continues to work as the subcommittee chairman for F12.10.