Cambridge, MA

Massachusetts Institute of Technology, The Chapel (Building W15)


Designed by Eero Saarinen and dedicated in 1955, the chapel (Building W15) at Massachusetts Institute of Technology (MIT) is a nondenominational space for worship and gathering. As part of their Capital Renewal Program, MIT undertook a major renovation at this mid-century icon with a goal of preserving the Saarinen design while addressing sixty years of weathering and deterioration. SGH consulted on the building enclosure and was the structural engineer for the project.

SGH assisted the architect in developing a design to maintain the appearance of the iconic steel and glass window wall, while addressing deterioration and performance issues. Highlights of our design include the following:

  • Removing the original seeded glass, laminating it to improve safety and breakage resistance, and reinstalling it in new panels
  • Exchanging previously replaced glass, which did not match the original, with new laminated seeded glass from Germany
  • Replacing the corroded and buckled steel frame with a custom, painted stainless steel frame matching original profiles and designed to accommodate thermal movement, preventing reoccurrence of the buckling issue

SGH designed repairs for the chapel’s failed and leaking concrete moat, including reconstructing the structural slab-on-grade, installing a waterproof liner, and constructing a topping slab to recreate the original configuration and texture.

Our design to restore the skylight illuminating the altar and iconic Bertoia sculpture hanging from the oculus included replacing broken glass, refurbishing the frame, installing new glazing and flashing, and designing a protection screen to protect the skylight from ice and snow falling from the bell tower.

SGH also assisted with designing a replacement roofing system to address persistent leakage. To install base flashing details beneath the legs of the bell tower sculpture by Theodore Roszak, the contractor removed and reset the bell tower in a single day.

Project Summary



Completion Date


Repair & Rehabilitation | Preservation
Building Enclosures | Structures
EYP Architecture & Engineering P.C.
Specialized Capabilities
Repair & Strengthening | Condition Assessments | Preservation | Facades & Glazing | Roofing & Waterproofing

Key team members

Matthew Bronski
Matthew Bronski
Senior Principal
Pedro Sifre
Pedro Sifre
Senior Principal