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Stephen A. Johnston, Ph.D.

 

Education

B.S. Materials Science and Engineering
The Johns Hopkins University 1989
M.S. Materials Science and Engineering
The Johns Hopkins University 1992
Ph.D. Materials Science and Engineering
The Johns Hopkins University 1995

Work Experience

Thomas Downey, Ltd.
Vice President: 2001 - Present

Consulting engineer for roofing, waterproofing, exterior walls, masonry, failure investigation, materials assessment, property condition assessment. Technical oversight of roof repair and replacement. Failure investigation for insurance claims.

Law Engineering and Environmental Services, Inc.
Project Engineer: 1995-2001

Design and construction administration for roof replacement systems. Technical consulting for roofing, waterproofing, facades, water infiltration and moisture control, non-destructive testing, and materials testing. Testing and development of testing procedures for customized testing applications. Property condition assessment of office, residential, hotel, and high-rise buildings.

Johns Hopkins University
Research Assistant: 1992-1995

Research of the relationship of mechanical and magnetic properties of high strength steels. Design of testing procedures, test equipment, and instrumentation.

 

301 Fairfax Street, Suite 108, Alexandria, VA 22314

Stephen A. Johnston, PE

Teaching Experience


Professional Affiliations

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