Mayo Clinic New Patient Tower and Addition


Mayo Clinic


Construction Cost
$150 million

Completion Date
April 2008

Project Size
590,000 SF

Mayo Clinic New Patient Tower and Addition


The new patient tower and addition added three stories and a penthouse on top of the existing Mayo Building, the construction of a new tower adjacent to the Mayo Building, and the filling in the wedge-shaped area in between the Mayo Building and the existing Davis Building.

The original two-story Mayo Building was designed to accommodate a future expansion for a total of four-stories, plus a penthouse. Further structural evaluation determined that the structure could accommodate a total of five-stories.

West of the Mayo Building is a new six-story patient tower with the capacity to accommodate ten additional stories for a total of 16. South of the Mayo Building, a wedge-shaped area was filled in which was originally one-story, but designed for five-stories.

An extensive study of different structural systems was performed. Structural steel with composite metal deck was selected for the floor framing. Lateral stability of the building was provided using a combination of cast-in-place concrete shear walls around the elevators and stairs, as well as steel braced frames at the two ends of the main tower. Moment-resisting frames were utilized for the wedge-shaped building. The foundations are 155-ton, 18” diameter augercast piles extending to 100-feet below the ground.