The stadium in Montréal is elliptical in plan and the grandstands are covered by a cantilevered concrete roof which runs around the full periphery. The retractable Kevlar membrane roof of the Olympic stadium has an anticlastic shape with 26 suspension points and 17 edge cables anchored at the concrete roof. The roof is lowered from a 168 m high, inclined tower on fully locked cables, the suspension points being held in shape by connecting cables. The membrane seams were made in a mixture of sewing and high frequency welding. The roof unfolds fully automatically in just 30 minutes. In the winter, the roof can be insulated by an additional PVC membrane, which is clamped under the Kevlar membrane by means of a Kevlar cable net. This results in a ventilated double-layer membrane roof, which reduces heat losses and prevents condensation.
Location
Montréal, Canada
Architect
Roger Taillibert, Paris
Cooperation
Ingemetal, Masermic
Awards
SolarPACES 2015 Technology Innovation Award
Client
Montréal Olympic Organisation / City of Montréal
Contractor
Lavalin Consulting Engineers, Montréal
Our Scope of Work
construction design
Horizontal projection200 x 140 m, elliptical shape