Rudy Ricciotti : Our intention was to limit the villa's impact on the site by blending it into the slope, without backfill, following a logic of unobtrusiveness. The outcome of this logic is its ultra-thin Ductal® roof. Can you remind us of its size, Romain?
Romain Ricciotti : 40 meters long, with a 7.86-meter cantilever and edges 3 centimeters thick.
Mouloud Behloul : In terms of concrete, that's a sheet of paper! Ductal® is an ultra-high performance fiber concrete, which allows us to break away from passive structures. It opens the way to a huge reduction in material and great creative freedom in forms, which, in this case, are curved, feminine.
Romain Ricciotti : These forms were dictated by external restrictions, such as the width of the trucks used to transport materials. But also by the resolute demand for optimum mechanical yield, similar to that of steel structures. This structural roof only Works in flexion, with a warp of 4 millimeters as a result of temperature variations, which is completely new. It has no incorporated waterproofing or insulation.