Lumen Learning Center - Paris Saclay University

Located in Paris-Saclay University campus, the site is bounded and conditioned by a curved light rail line, the Jardin Argenté and the Boulevard des Sciences, which is integrated into the building as a large atrium-threshold, characterising its materiality using wood and steel-aluminium perimetral latticework. An outdoor grandstand, the auditorium and exhibition spaces are closely linked to the atrium-threshold. From this point, a continuous space unfolds, spiralling ascending through the reading rooms , research and workspaces culminating in a large reading space next to an open-air terrace.

The building aims to become a major attractor for campus users and citizens. The project is resolved through a large, light, porous and permeable ‘veil’ that surrounds the façade perimeter and invites passers-by to enter. This latticework also protects and modulates the building’s temperature and lighting. The atrium-threshold is the starting point for an itinerary through the different programmes offered to all types of users: students, researchers and citizens of the campus. It should be noted that this space is a place for citizens to gathering. All this is achieved through various scenarios positioning, deployed in an ascending and spiral way, with spaces for reading, exhibitions, and terraces for gathering. This is complemented by a group of offices located tangentially to the itinerary and in close proximity to users.

The Lumen is highly efficient and sustainable from an energy standpoint, with High Environmental Quality (HQE) Label Effinergie certification, complying with RT-2012. It reduces energy demand and maintenance costs through its passive bioclimatic design: floodable roof and atrium with motorised skylights, openings in the façades, continuous sun protection latticework and a tree-filled garden to the south. All this contributes to the creation of a passively conditioning space, which will maintain comfort during the most extreme temperatures period thanks to active systems. The circular economy is applied using dry construction and modular prefabrication systems to optimise resources and reduce construction waste: metal structure, hollow core slabs, perimetral latticework formed by recycled aluminium cylinder. Added to this is the use of low-impact materials such as certified wood that covers ceilings and walls with an integrated sound absorption system.