William R. Nash, P.E., is a Senior Project Manager with WDP & Associates Consulting Engineers. He is responsible for professional engineering services for building enclosure investigations for structures including hospitals, laboratories, educational facilities, libraries, offices and multi-story residential. He is also involved in historic building investigations, repair, construction observation ,  building enclosure condition assessments, constructability, building enclosure coordination programs ( BECP), Commissioning-  BECx,  field  performance testing of building envelopes. He has served on the committees that produced NIBS Exterior Enclosure Commissioning  Guidelines 03-2006 and 03-2012, and on the committee that produced ASTM E 2813 Standard for Enclosure Commissioning. Mr. Nash is active on committees in ASHRAE, Air Barrier Association of America- Terminations & Flashings and Technical ,  American Concrete Institute – committees on  Education and Tolerances  , American National Standards Institute— member of the A 10 committee on  Standards for Construction and Demolition,  American Society of Civil Engineers- Co Editor  Practice Periodical on Structural Engineering and Construction, co chair of Site Construction Safety , American Society of Safety Engineers, The Masonry- Society Construction- Construction Practices  , Post Tensioning Institute,  Spray Polyurethane Foam Alliance- Consultant and Safety committees  and  an active member of  ASTM  standard committees on: dimension stone;   building seals and sealants, Roofing &waterproofing, fire standards,  performance of buildings, forensic engineering and sustainability.

Mr. Townsend is a Senior Engineer in the New York City office of WDP Consulting Engineers, where he is engaged in a variety of structural, material, and architectural engineering projects. He specializes in building enclosure consulting and the building enclosure commissioning process, including design peer review, submittal reviews, mock-up and field performance testing, and onsite construction observation. Mr. Townsend earned a Master of Science degree in Civil Engineering in 2008 from Virginia Tech, with a focus on structures, and a Bachelor of Science degree in Civil Engineering earned in 2006 from the University of Alaska, Fairbanks. He has performed research focusing on the application of structural adhesives for curtain wall window facades on tall buildings, and is an active member of the ASTM committee on the performance of buildings.