Office Building, Eastern MA


CBI was engaged to investigate and design the replacement of the existing curtain wall system.  The system was built in the mid 1970’s, has single pane glazing, and was in failing condition.


This office building is approximately 750,000 square feet, five stories tall, with about 150,000 square feet of curtainwall.  There are about 3,000 employees in this facility.  All employees must remain working during the construction process.  The ongoing and future comfort of these employees, as well as making accommodations to their needs during their temporary relocation during construction, was a critical component of the coordination effort between the Owner, their facilities managers, the construction manager, and the design team.

CBI performed an extensive investigation and testing of the existing components.  The investigation entailed removing existing glazing panels, and fully documenting the structural steel framing members, curtain wall components, and connections between the two.  Also, the investigation of the existing interior conditions, such as above ceilings to review connection details, as well as to verify the layouts of existing furniture, walls, ceilings, and other interior components.  CBI also reviewed existing building drawings to identify areas that had changed since the original construction.

Once the investigation work was complete, CBI met with numerous curtain wall manufacturers and installers to explore available options and limitations of the existing conditions and proposed solutions.  CBI recommended three different types of curtain wall replacement systems for review with the Owner, as well as numerous color and shading options for consideration.

Once the appropriate level of security was determined, CBI continued on to develop a contemporary design for the curtainwall.  In addition to security concerns, upgrading occupant comfort levels, meeting the energy code requirements for the glass and framing system, such as minimizing heat loss and cutting down on solar heat gain, were balanced against the needs of improving the view to the exterior and allowing clean natural light to enter the work spaces.

Multiple design options were presented to the Owner.  These design options were vetted, developed, refined, until a final design was selected.  CBI then worked with the Construction Manager and Curtainwall Contractor in a design-build process to provide the Owner with the solution that best fit their needs and budget, while still providing a substantial design upgrade to the building.