The execution of all work in the field of construction, notably specialized in waterproofing, masonry, and peripheral insulation, as well as all related or similar activities, directly or indirectly related to this field. The company may also: carry out all operations that directly or indirectly relate to its corporate purpose and that promote or facilitate its development, take participations in companies or acquire properties, excluding any operation prohibited by the LFAIE, or excluding any real estate operation not having an exclusively commercial allocation, grant or obtain loans or guarantees to affiliated companies or to third parties.