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Over-Cladding for Thermal Performance and Building Resiliency

Join AIA|DC’s Building Enclosure Council for an in-depth case study of a high-performance renovation.

The Nelson Harvey Building patient tower occupies a dense urban site in the heart of the Johns Hopkins Hospital campus in Baltimore, Maryland. Ayers Saint Gross teamed with Wilmot Sanz to renovate the exterior and interior of the nine-story, 33-year old, 118,500 sq ft. building. The innovative and sustainable approach in developing a new hybrid building combines high-performance over-cladding with the existing envelope. This resulted in a modern design aesthetic that is energy efficient, environmentally sustainable, and highly resilient. In addition to new exterior over-cladding systems, the renovation includes new patient rooms, the first-floor lobby, main entrance, and plazas.

Presented by: Dan McKelvey, AIA, LEED AP, NIBS

Dan McKelvey is an Associate Principal at Ayers Saint Gross with more than 30 years of experience in all phases of architecture on college and university campuses. Dan’s diligent, research-based architecture and QA/QC can be seen in projects such as the Rams Head Center at the University of North Carolina, the University of Baltimore’s John and Frances Angelos Law Center, Duke University’s School of Nursing, Johns Hopkins’ Nelson Harvey Building, and the Oxford Road Building at Emory University. Because of his passion for best practices in the design and construction industry, he co-founded the Building Enclosure Council – Baltimore.


After attending this course, participants will be able to:

  • Identify the code implications related to exterior enclosure on existing infrastructure that inform design decisions in a repurposing project;
  • Describe the role that technology plays in assessing, coordinating, and implementing design strategies for new enclosure design on existing infrastructure;
  • Examine the impact of design decisions related to cladding materials, fenestration, roofing and insulation on the constructability of a new enclosure design; and
  • Discuss the various strategies to future proof buildings through innovative design systems that address short term and long-term building enclosure performance and sustainability objectives.