In brief
Industrial production is arranged in a representative semicircular composition.
Useful to know
The Royal Saltworks at Arc-et-Senans was a project of Claude-Nicola Ledoux, begun in 1775. The semicircular scheme organizes industrial functions and expresses the hierarchy of labor. The intended ideal city was not fully realized. [1]
The saltworks are related to the production history of Salen-le-Ben and the transport of salt solution to a place with access to fuel. When planning, compare the axis arrangement and the different buildings by function. This shows why industrial architecture can be both a technological infrastructure and a highly formalized societal composition.
Sources
For further detail and to check the information: