Arrowhead Pharmaceuticals TI

Coffman served as the structural engineering team for the tenant improvement of an existing 120,000 sf, one-story plus mezzanine tilt-up building. The space was converted to a medical research/life science facility, including interior office and laboratory spaces. The structural scope also supported the addition of mechanical systems on the roof and an exterior mechanical yard.

One challenge that our team faced while developing the structural design was the minimal reserve structural capacity of the roof framing to support the proposed large and heavy rooftop mechanical units. Coffman worked with the design team to strategically locate the new rooftop mechanical units to minimize the need for additional roof strengthening, ultimately saving the client extra cost.

Additionally, in the new interior labs, the ceilings were required to have walkable paths to access and service the proposed interior suspended filtration system. Our structural team led coordination efforts with the client, end user groups, design team, and contractor to determine an efficient and cost-effective structural solution. With timely responses and constant communication with the contractor, our team helped maintain a very tight construction schedule with considerations for design changes during the construction phase.

Photo Credit: Haley Hill Photography 


  • Commercial & Retail
  • Science & Technology


  • Structural Engineering