Before rapidly constructing a small provisional school in Sabendé in French Guinea, Écochard  worked out his role in light of the functions of local building traditions, on the one hand , which gave him either circular planes ( yard ) or rectangular plans with semicircular ends ( classes) with light connections - depending on the orientation - leading to other buildings, opening either north or south (since we are below the equator), and enabling the isolation location of classes fom each other. Sanitary facilities were kept completely separate.