new bells, the simple rope and lever system, previously used to swing the wooden headstock, was replaced with a grooved wheel around which the rope is wrapped. This was done to minimize the vibrations whenever the bells are rung and hence the risk of damage to the tower. Elevator In 1892, it was first proposed that an elevator be installed in the bell tower. But concerns over the stability of the structure were voiced by the Regional Office for the Preservation of Veneto Monuments (Ufficio Regionale per la Conservazione dei Monumenti del Veneto). Although a special commission was nominated and concluded that the concerns were unfounded, the project was abandoned. At the time of the reconstruction, an elevator was used to raise the new bells to the level of the belfry, but it was only temporary. Finally, in 1962, a permanent elevator was installed. Located within the inner shaft, it takes 30 seconds to reach the belfry from the ground level. Restoration work (2007–2013) At the time of the reconstruction, the original foundation was extended from approximately to with the objective of distributing the weight of the bell tower on a larger base and reducing the load from to per . This was done by driving additional piles into the clay. Three layers of oak planks were then laid on top of the piles followed by multiple layers of Istrian stone blocks. However, the old and the new foundations were not successfully fused into a unified whole, and they began to subside at different rates. As a result, cracks in the new tower were already visible in 1914 and multiplied over time. A monitoring system, installed in 1995, revealed that the tower was leaning by . Beginning in 2007, the Magistrato alle Acque, responsible for public works, reinforced the foundation, adopting a system used to consolidate the façade of St Peter's Basilica in Rome. This involved placing four titanium tension cables, in diameter, around the perimeter of the stone foundation. Two of the cables, placed apart within a single protective polyethylene tube, are located below the surface of the square and are anchored at the four corners of the foundation by titanium pillars. Two more cables are located at a depth of and are held by granite blocks. These cables are monitored and can be tightened as necessary. The project, initially projected to last two and half years, was completed