Sampoong Department Store Collapse: How a 25% Thinner Column Caused a Disaster

About this video

The Sampoong Department Store collapse was caused by columns poured at 60 centimeters instead of the designed 80, with half the required reinforcement. In this video, we trace how escalator cutouts and missing beams turned a construction shortcut into a fatal structural failure.

From the video

A QUARTER TOO THIN
A QUARTER TOO THIN
Cut for escalators
Cut for escalators
No beams to catch it
No beams to catch it
It kept growing
It kept growing

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Sampoong Department Store Collapse: How a 25% Thinner Column Caused a Disaster