The Leaning Tower of Pisa, Italy
The Leaning Tower of Pisa is a world-famous landmark known for its unintended tilt. Construction started in 1173 but halted after the third story was built due to the foundation settling unevenly on soft ground. That’s what caused the tower to lean. The delay from ongoing wars allowed the foundation to settle, preventing early collapse.
When construction resumed, engineer Giovanni di Simone's attempts to correct the lean by adding extra masonry only worsened it. The tower's lean continued to increase and reached 5.5 degrees by 1990.
It major stabilization efforts and the site remained closed until 2001. The tower is now expected to remain stable for the next 200 years.
比萨斜塔,意大利
比萨斜塔是举世闻名的地标,以其意想不到的倾斜而闻名。施工于1173开始,但由于基础在软土地基上不均匀地沉降,在第三层楼建成后暂停。这就是导致塔倾斜的原因。持续战争的拖延使基金会得以安定下来,防止了早期崩溃。
恢复施工后,工程师Giovanni di Simone通过添加额外的砖石来纠正精益的尝试只会使精益恶化。塔的倾斜度继续增加,达到1990年5.5度。
它进行了重大的稳定工作,2001年该站点仍然关闭。现在预计该塔将在未来200年内保持稳定。