XEE4407682 Cross section of a house on rue Beaubourg in Paris, showing the use of force distribution. - A l\'entresol, manufacturer of brushes; on the 1st floor, hatter; on the 2nd floor, manufacturer of metal frames. At the bottom and on the left are the sewer pipe and the outlet for riser and connections. by Unknown Artist, (19th century); Private Collection; (add.info.: Cross section of a house on rue Beaubourg in Paris, showing the use of force distribution. - A l\'entresol, manufacturer of brushes; on the 1st floor, hatter; on the 2nd floor, manufacturer of metal frames. At the bottom and on the left are the sewer pipe and the outlet for riser and connections.); Stefano Bianchetti.