The Company


box Memberships &


Staff Profiles

Memberships & Affiliations

Thomas Downey, Ltd. and its staff are active in engineering and client-related organizations. The firm’s members are frequent contributors to the educational programs of Metropolitan Washington, DC chapters of national organizations. In addition, TDL’s Office Manager is a long-term volunteer member of a local board of architectural review. The groups we belong to include:

  • American Architectural Manufacturers Association (AAMA)
  • American Concrete Institute (ACI)
  • American Forest and Paper Association (AF&PA)
  • American Institute of Architects Northern Virginia Chapter (AIANOVA)
  • American Society of Civil Engineers (ASCE)
  • ASTM International (ASTM)
  • Association for Preservation Technology International (APTI)
  • Building Enclosure Technology and Environment Council (BETEC) of the National Institute of Building Sciences (NIBS)
  • Community Associations Institute (CAI)
  • Construction Specifications Institute (CSI)
  • Institute of Real Estate Management (IREM)
  • International Code Council (ICC)
  • International Concrete Repair Institute (ICRI)
  • National Roofing Contractors Association (NRCA)
  • Structural Engineering Institute (SEI)
  • Structural Engineers Association (SEA)
  • Structural Engineers Association of Metropolitan Washington (SEA-MW)
  • Washington Metropolitan Chapter Community Associations Institute (WMCCAI)


photo of buildings
301 North Fairfax Street, Suite 108    Alexandria, VA 22314    703.548.3403    info@tdlengineers.com