Thomas Schwartz joined Simpson Gumpertz & Heger Inc. (SGH) in 1973.  For over forty years, he has conducted field and laboratory investigations, and produced new and remedial designs for building-envelope systems, including curtain walls, glazing, roofing, waterproofing, and masonry.  He is active in national standards development and research on various topics related to the construction industry.  He is a fellow of ASTM International (ASTM), and current chairman of the ASTM Board of Directors.  Mr. Schwartz is immediate past President of SGH, a position he held for 20 yrs, and immediate past Chairman of its Board of Directors.  He regularly lectures and writes on building technology topics.  He has been a featured speaker in the national lecture series “The Building Envelope:  Solutions to Problems,” sponsored by SGH.  He received the Engineering News-Record Award for Contribution to Engineering, and ASTM’s Award of Merit for his contribution to standards development.