Morrison Hershfield's role on this project included the following:

• Discussed with the design team the various options for maintaining the plane of air tightness in the curtain wall assemblies and assisted them in implementing a traditional design approach using the insulated glazing units and spandrel panels as the plane of the air tightness.
• For the unitized metal panel system, assisted with the implementation of an air tight metal back pan system that provided a continuous air barrier as well as a secondary barrier against water intrusion in a high performance rainscreen design approach.
• Assisted with the integration of the air barrier transition details between the cladding and glazing systems and the roof assemblies
• Reviewed shop drawing submittals to ensure the continuity of the air barrier in the manufacturer’s design and witness laboratory mock-up testing to confirm the performance of these assemblies with respect to air leakage.

In addition, we will be providing periodic field observation of these assemblies throughout the construction phase.