![]() ![]() Tilting was also due to the fluctuations of the water levels.Soil at south side compressed faster than the north side – weight of the tower was the main factor of tilt.The unstable mixture of soil – caused the tower to sink to the south side.The unstable mixture of soil material caused the soil to compact at a different rate, causing the tower to sink 30-40 cm.Layers ran parallel except under the the foundation of the tower, where it formed a bow shape.Location of tower – ground comprised of layers of sand & clay.32,240 blocks ("ashlars") for facing the exterior and interior of the cylindrical wall structure. ![]() Inclination = 5 ½ degree’s to the south.Thickness of wall =4.1 m, and 2.7 m for all other levels.- The differential subsidence is 1.89m this means that the extreme north and south have subsided by 1.86m and 3.75m respectively.The tower kept shifting to one side over the years, around 1.2 millimeters from the vertical every year.It was observed at this stage that the tower was leaning on the north side, and construction was on hold because of neighboring wars. ![]()
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