Paul E. Totten is a Vice President at WSP, where he leads the Building Enclosures Division. He has over 26 years of experience in the fields of structural engineering, building enclosure design and commissioning, and building science. Totten has concentrated his expertise on the evaluation and analysis of heat, air, and moisture transfer and the cumulative effect these elements have on building components and building operation. He is past co-chair of the Washington, DC AIA/NIBS Building Enclosure Council and is a member of NIBS, ASHRAE, and USGBC. Totten also served as a committee member of the NIBS Guideline 3 â Exterior Enclosure Technical Requirements for the Commissioning Process. He is a past chair of the NIBS Building Enclosure Technology and Environment Council (BETEC) Education Committee.