第十一届艾特奖公共建筑提名奖

175 HAUSSMANN

参赛时间：2021-02-19

作品类别：公共建筑

获奖者: Philippe Chiambaretta

说明：

REINTERPRETING PARISIAN ARCHITECTURE

The restructuring of 175 Boulevard Haussmann is an opportunity to become involved in making Paris a resilient and innovative city, one that is capable of renewing and reinventing itself. PCA-STREAM brings together two separate buildings to create a coherent office complex geared toward the well-being of its users and collaborative work. An emblematic contemporary rooftop addition, characterized by its glass scales, acts as a practical and symbolical connector between the various buildings and architectural periods involved.

Acting as a beacon

The primary objective was to restore a high level of visibility and legibility to the building from the street. By freeing up the ground floor of No. 175, the accesses could be shifted to the tip of the building in the form of a majestic, well-aligned entrance. The entrance is then magnified by providing ample clear height with a large chandelier, producing an ample and spectacular volume. The restructuring brought the inside up to date, adapting it to contemporary standards while also restoring coherence to the whole.

Driven by the ambition of providing a beacon in the urban landscape, PCA-STREAM relied on the idea of raising the construction to give a new image and a new impetus to the complex. The glass roof reinvents the identity of 175 Haussmann by contributing a very contemporary feature to be integrated into the historical and heritage context of the district. This iconic landmark becomes a place to see and to see from, the singular spaces under this glass roof, midways between interior and exterior, also become a tool for community-building.

Well-being at the heart of the project

175 Haussmann had to respond to the changes in the way we work. The project thus pays particular attention to the design of service spaces, in the spirit of hotel lobbies, but also to furniture, which refers to aesthetic codes that are more domestic than purely tertiary. Fully modular, the offices floors are very bright, thanks to a white and glazed facade on the patio featuring an innovative kaleidoscope system that allows the light to be reflected and be transmitted to the very bottom of the widened patio.

Designing a new circulation core has brought about fluids and open floors offering a non-hierarchical horizontal distribution of teams. The number, size and quality of common spaces allow them to promote the informal circulation of knowledge, serendipity, and ultimately creativity. Widening the central courtyard has created a bright, convivial common space that becomes a village square for the Lazard community. Housed under a large, triple-height glass roof, it is the place where employees meet, exchange ideas, or conduct informal work sequences.

An ambitious environmental approach

The restructuring was designed to foster a reconnection of the building and its users to nature. The windows are designed to be opened on the terraces and allow for natural ventilation. The passive energy protection systems are also supplemented by the installation of a renewable energy production system using photovoltaic glass that is incorporated on the southwestern side of the glass roof.

With an exceptional panoramic view on Paris, the liveable landscaped terrace offers a wealth of uses in tune with the seasons, bringing a sensory dimension of biophilia to the complex. This green roof terrace uses an innovative vertical urban permaculture technique developed in collaboration with the start-up company Sous les Fraises. The urban substrate-based agriculture system is thus complemented by the use of a hydrobiological membrane as a vertical greening tool, supporting a complete ecosystem fed by organic matter, where micro-organisms and plants live symbiotically. The landscaping system optimizes management of the water resource, in particular through the integration of a greywater treatment system using the phyto-purification potential of plants.