The reasons for the crash of the San Marco bell tower in Venice in 1902., described by Ing. By the birbaumer in the same journal (No. 27,, which is certainly excessively for such short piles. A unilateral precipitate formed in the weakest base, causing a deviation of the wall of the bell tower 50 cm from the normal position, after which the structure fell upon. The collapse was also facilitated by the poor masonry of the Boot foundation in an air solution that was led out by groundwater.
Why did the bell tower in San Marku collapsed: reasons