View of new main entrance into the Rotunda
View across park of Kaneff Expansion
Interior view of Rotunda and adjoining circulation spaces

University of Toronto Mississauga Kaneff Expansion

This short-listed proposal for the Kaneff Expansion at the University of Toronto is simple, yet elegant - in form, structure and material palette. The infill and expansion design transforms the existing Rotunda with a highly transparent, light-filled space that effectively provides for a gateway to the campus.

The enclosed Rotunda is composed of a timber structured, clear span, cylindrical rotunda and a curved channel glass cladding system covering a three story, steel framed building. A tall timber structured loggia and forecourt provides a warm and welcoming entrance from the intersection of the Five Minute Walk and Middle Road, onto the Departments and Registrar frontages on the Rotunda.

The Rotunda is a grand, triple height space that is enclosed by an elegant wood roof, king-post truss structural system of laminated timbers, and purlins on wood posts. The wood structure is a unique feature, rich in texture and natural colour, while satisfying Kearns Mancini's design objective for the use of materials from renewable resources which provide acoustical dampening qualities to the open space.

The simple form and design of the roof structure is intended to allow for generous natural day-lighting while allowing for passive solar gain during the winter months. A clerestory glazing system combined with a system of solar fixed shading devices would allow natural light to enter the gathering and circulation space below, while controlling unwanted solar gain during the summer months.

Existing site

Integrated into the Rotunda is a second storey open space, created by removing the roofing of the existing adjoining building and converting it to an interior Galleria that overlooks the Rotunda. These views of the Rotunda provide an ideal location to start tours, or to view events happening within the space below.


University of Toronto Mississauga

Short-listed, Unbuilt

Building Size

Project Value

University of Toronto

Project Team
Jonathan Kearns, Peter Ng, Gabriel Didiano

View from park

Overall, this design provides for a bright, transparent and inviting event space that speaks to the vibrancy of student life on the Campus. Program elements such as large seminar rooms that require clear spans and minimal exterior views were located in the basement. The access stair from the basement level tunnel was designed so that it would bring daylight down to the lower level.

Other Projects

Contact Us

  • 1 Atlantic Avenue, Suite 104
  • Toronto, Ontario, M6K 3E7 Canada
416 536 5666
416 536 8626