In Dijon, the largest operation in a mixed structure by Graam
In 2022, GRAAM delivered the new headquarters of Caisse d’Epargne Bourgogne Franche-Comté (12,505 m2 SHOB) in Dijon (Côte-d’Or) as well as the silo with 560 parking spaces for SCCV Valmy (master ‘work). This mixed-structure building is the tallest in France. Communicated.
The tertiary building (22 m high, 62 m long) consists of a concrete base and six floors entirely implemented in the dry process, according to a structural framework optimized for wood construction.
Presenting all the characteristics of a passive building, it must be considered from the angle of promoting regional resources and know-how. On the program: a post-beam system that saves materials, a spelling of the facades that refers to constructive stories, companies all from Burgundy Franche-Comté, with the exception of one.
From 2016, the SCCV Tertiaire Valmy (Caisse d’Epargne), the city of Dijon and LCDP (developer) were immediately won over by the project’s concepts, which exempted them from organizing a project management competition.
The strong idea of GRAAM: invest in the territory and plan for the future! In other words: build a demonstrator building with a wooden structure, that the Burgundy Franche-Comté region has large forests, particularly in the Morvan, and that the Caisse d’épargne is itself the owner of many forest areas.
The natural slope of the land allows both level access to the car park at the base and the installation of the level of the ground floor slightly overhanging, so that users benefit from unobstructed views of the environment.
The main entrance is logically located on avenue Françoise-Giroud, opposite the tramway, where the architects have fitted out a vast covered square (floor in Burgundy stone), which is extended by a succession of crossing spaces, interior and exterior: patio , reception hall, atrium, secondary entrance hall, from which one reaches the parking silo.
Entirely glazed, this spatial structuring of the central part of the ground floor has generated two wings with distinct functions. The first, to the east, houses the sports hall and local logistics (mail processing, etc.). The second, to the west, has a public vocation with its training and reception rooms.
All the offices (usually 300 m² floors) and all the meeting rooms, sandwiched between the atrium and the patio, have natural light on the first day. Refuting the standards of tertiary real estate, its duplication of corridors and its built thicknesses of between 18 and 21 meters, Graam has endeavored to diversify the experience of users and their relationship to the outside.
The thickness of the last four levels of the Caisse d’Epargne building, comparable to that of apartment buildings, is only 13.50 meters. This modest size in terms of profitability is offset by the large surface area of the first two floors (40.50 mx 62 m), the center of which is illuminated by the atrium and the patio. Objective: to create interiorized environments, complementary to the extroverted universes of the peripheral spaces and the elevated ones, which allow aerial panoramas over Dijon and its countryside.