Archetech Issue 27 2016 | Page 68

The pavilion gradually decreases in height as it retreats from the urban turbulence, creating a cascade effect that enables the museum to reach out toward the park at the back while inviting the city in on the front. A 20-metre cantilever announces the main entrance of the Lassonde pavilion. Built using a hybrid steel truss system, it accommodates galleries completely uninterrupted by support columns. The entrance opens out onto an urban plaza that leads to a series of gateways into the galleries, courtyard and auditorium. A monumental spiral staircase of 79 stairs as well as an exterior pop-out staircase of 40 stairs provide spectacular views of the park, the city and the museum. Within the gallery boxes, mezzanines and overlooks link the temporary and permanent exhibition spaces. With its triple-glazed panels, comprised of a layer of diffuser glass, two layers of fritting and a low-emissivity coating, the building's interior is bathed in light while the façade reflects the surrounding greenery. The fritting's pattern density provides sufficient solar shading to satisfy LEED's mechanical cooling requirements. Thanks to the fritting and diffuser glass, as well as the skylights and carefully curated fenestration, a translucent effect permeates the space, transforming the cultural institution into a natural extension of Battlefields Park. Archetech - Page 68 The new building links to the existing museum complex by a 130.6 meters long passageway. By virtue of the sheer length and change in elevation, the tunnel creates a series of linked rooms with a dramatic range of spatial and lighting conditions. Each of these serves as a distinct gallery condition, a series of spatially diverse yet visually interconnected volumes that lead the visitor, as if by chance, through the complex. The Lassonde pavilion is being launched with three days of festivities. Commissioned to endow the provincial capital with a worldclass building, the consortium of OMA and Provencher_Roy have conceived a superb work of architecture that subtly, perhaps even stealthily, and certainly successfully, strengthens the links between the disparate elements of the site. The structure creates a stunning environment for showcasing the Musée's collections, and beckons visitors to discover art, creativity and local talent, and to celebrate them. www.provencherroy.ca Photo credit: Bruce Damonte