502 Dead. Sampoong's Owners Saw the Cracks at 9 A.M.

Chapters

1. 00:005:52 P.M.
2. 00:14Sampoong
3. 00:36Eight hours of warning
4. 00:50Never designed for this
5. 01:06Flat slab
6. 01:25The contractor refused
7. 01:48The columns
8. 02:02The fifth floor
9. 02:17Ondol
10. 02:38The building was carrying loads its columns were
11. 02:4987 tonnes
12. 02:59Dragged, not craned
13. 03:20Column 5E
14. 03:419:00 A.M.
15. 03:56Kept trading
16. 04:09At risk of collapse
17. 04:23The directors leave
18. 04:46The last day
19. 05:05Punch-through
20. 05:24The joint line
21. 05:40The toll
22. 05:51No bomb. No gas.
23. 06:09The hidden cone
24. 06:29The arithmetic
25. 06:54Seventeen days
26. 07:12The trials
27. 07:30The rule it wrote
28. 07:52The arithmetic finished

About this video

Learn how the Sampoong Department Store collapse in Seoul on June 29, 1995, was caused by a fatal flaw in the flat-slab column connection. This video investigates the punching shear failure at column 5E, the unpermitted fifth floor, and the 87 tonnes of rooftop chillers that pushed the structure past its limits. Chapters: 00:00 5:52 P.M. 00:14 Sampoong 00:36 Eight hours of warning 00:50 Never designed for this 01:06 Flat slab 01:25 The contractor refused 01:48 The columns 02:02 The fifth floor 02:17 Ondol 02:38 The building was carrying loads its columns were 02:49 87 tonnes 02:59 Dragged, not craned 03:20 Column 5E 03:41 9:00 A.M. 03:56 Kept trading 04:09 At risk of collapse 04:23 The directors leave 04:46 The last day 05:05 Punch-through 05:24 The joint line 05:40 The toll 05:51 No bomb. No gas. 06:09 The hidden cone 06:29 The arithmetic 06:54 Seventeen days 07:12 The trials 07:30 The rule it wrote 07:52 The arithmetic finished

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