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Why is the "Leaning Tower of Pisa" tilted??

This is mainly due to problems, foundations and soil conditions, not appropriate for the weight of large structures.

🟠 The foundation is too shallow.

The tower was built in c.1173 with a circular spread foundation, only about 3 meters deep.

This design of foundation cannot support the total weight of a tower made of white marble that weighs 14,500 tons.

🟠 Unhealthy and uneven soil conditions

Pisa is located in an area of Alluvial Soil, consisting of clay, sandy clay and shells, which is a soft, easily collapsed and unevenly dense layer of soil.

• The southern soil is softer and easier to collapse than the northern soil.

When the huge weight of the tower presses down on soft soil, causing uneven subsidence.

Which place has started to tilt since construction.

By building to the third floor (about five years after it was built) in 1178, uneven subsidence caused the tower to tilt so clearly to the south that it had to stop construction for almost a century.

If the structure is tilted at the time of construction, the weight of the soil is underestimated, or the determination is incorrect from the beginning.

This construction break gives the soil time to decompress and collapse a little, otherwise the tower could collapse in the first place.

🔺 later building, an attempt was made to fix it by building the upper layer to lean to the opposite side for counterweight.

This makes the tower look bent, resembling a "banana shape."

This weight gain further collapses the southern foundation.

Even there are no official soil survey drill reports by modern standards.

But the results of the latter have confirmed that "not properly assessing the condition and properties of the soil" is the main reason why the tower became one of the most famous architectural faults, sir.

Think about work, no time or housing problems. Think about it.

"N36 Engineering Co., Ltd."

# Leaning tower

# Knowledge of land

# Job control consultant

# Soil collapsed

# Condo check

2025/12/4 Edited to

... Read moreนอกจากสาเหตุหลักที่กล่าวถึงในบทความเกี่ยวกับฐานรากที่ตื้นและดินตะกอนน้ำพาซึ่งส่งผลให้หอเอนเมืองปิซ่าเอียง ยังมีประเด็นทางวิศวกรรมและประวัติศาสตร์ที่น่าสนใจเกี่ยวกับวิธีการแก้ไขและผลกระทบที่เกิดขึ้นเพิ่มเติม ในช่วงที่มีการหยุดการก่อสร้างเกือบหนึ่งศตวรรษ หอคอยนั้นได้มีเวลาปรับตัวตามธรรมชาติของดิน ทำให้ดินกดตัวและยุบตัวลงเล็กน้อย ซึ่งเป็นปัจจัยสำคัญที่ช่วยให้โครงสร้างไม่ถล่มในเวลานั้น หลังจากก่อสร้างต่อก็มีการออกแบบให้ชั้นบนของหอเอนเอียงไปในทิศทางตรงข้าม เพื่อถ่วงสมดุลน้ำหนัก แต่เทคนิคนี้เองก็ทำให้ฐานรากด้านใต้ยุบตัวมากขึ้นอีก ส่งผลให้หอคอยมีลักษณะโค้งงอคล้ายผลกล้วย ซึ่งเป็นเอกลักษณ์ที่ทำให้หอเอนเป็นที่รู้จักทั่วโลก จากประสบการณ์ส่วนตัวในการติดตามและศึกษาวิศวกรรมโครงสร้าง สิ่งสำคัญที่ได้เรียนรู้คือการประเมินความเหมาะสมของฐานรากและการวิเคราะห์ดินควรทำอย่างละเอียดและรอบคอบก่อนการก่อสร้าง เพราะความผิดพลาดในการประเมินนี้อาจนำไปสู่ปัญหาใหญ่ตามมาได้ หอเอนเมืองปิซ่าเป็นตัวอย่างสำคัญที่แสดงให้เห็นว่าการดูแลและออกแบบที่ดีสามารถช่วยยืดอายุและรักษาโครงสร้างที่มีปัญหาได้อย่างไร สำหรับคนที่สนใจเรื่องการควบคุมงานก่อสร้างและที่ปรึกษาด้านวิศวกรรม หอเอนเมืองปิซ่าคือกรณีศึกษาที่ดีในการเรียนรู้ว่าการประเมินดินและฐานรากที่ไม่ถูกต้องสามารถส่งผลกระทบต่อความมั่นคงของอาคารได้อย่างไร พร้อมทั้งยังเน้นย้ำความสำคัญของการทำงานร่วมกับผู้เชี่ยวชาญเพื่อป้องกันปัญหาดังกล่าวในอนาคต

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