The project
Terrasol is supporting Setec Bâtiment, the project manager, on the project to transform the former National Museum of Popular Arts and Traditions, next to the Jardin d’Acclimatation in Paris, into the LVMH House – Arts, Talents, Heritage (ATP). Of the former museum, which closed in 2005 and was itself built in 1969 on the site of the former Palmarium, only the steel framework of the former central tower remains.
The new building will retain the shapes and proportions of the old one but will be extended in width and depth, bringing the lowest point of the project below ground level. These changes may appear minor but require significant work:
- almost complete demolition of the old structure,
- underpinning of the loads from the retained tower structure using clusters of micropiles,
- various retaining walls (tensioned secant piles, nailed Berlin walls, Lutetian walls, nailed walls, etc.),
- a heavy-duty foundation slab,
- temporary pumping system and
- re-infiltration system.
Involved since the feasibility phase, Terrasol carried out all the geotechnical assignments: G1 and G2 design (preliminary and detailed design), G2 (tender documents and final design), and G4 construction supervision. During the design phase, several excavation depth scenarios were examined, particularly for the eastern wing, with various shoring and foundation solutions, notably a permanent diaphragm wall with a pile-anchored raft foundation.
From 2022 onwards, Terrasol then oversaw the monitoring of the geotechnical works, which were mainly carried out by the Franki/Keller consortium. Today, the geotechnical works are complete and the building’s structure is well advanced.
Project cost
€158 million
Value of services
€370k
Client
LVMH
Project Manager
Setec Bâtiment
Key details
Underpinning of the entire building using micropiles
