Sampoong Collapse: The Illegal Fifth Floor That Killed 502

About this video

The Sampoong Department Store collapse was caused by an illegal fifth floor never in the original permit. Learn how the addition of eight restaurants with ondol heated floors overloaded the columns to four times their design load, leading to one of the deadliest structural failures in history.

From the video

A METRE OF HOT CONCRETE
A METRE OF HOT CONCRETE
Not in the permit
Not in the permit
Ondol
Ondol
Nobody added a column
Nobody added a column

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Sampoong Collapse: The Illegal Fifth Floor That Killed 502