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The unstable column failed in seconds
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Engineering Catastrophes

The unstable columnfailed in seconds, leaving the beams unsupported --as they collapsed,...

The unstable column
failed in seconds, leaving the beams unsupported --
as they collapsed, 3,000 tons of steel
and concrete fell with them

Full Transcript

00:00:01.000 --> 00:00:03.005
The unstable column failed in seconds,
00:00:03.006 --> 00:00:07.033
leaving the beams unsupported -- as they collapsed,
00:00:07.133 --> 00:00:11.133
3,000 tons of steel and concrete fell with them.
Duration
12 seconds
Views
10
Timestamp in Movie
00:21:14
Uploaded
Oct 28, 2025
Season
6
Episode
9
Genres
documentary
Production
Moviecoop

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Movie Summary

With access to all phases of design and a large cast of experts, some of the great failures of engineering history are uncovered.
S06 • E05 {\an8}The temporary structure is under constant pressure from the huge loads on top. - Engineering Catastrophes 00:07
{\an8}The temporary structure is under constant pressure fro...
S06 • E08 And also examine one of the gates next to it that was still intact, - Engineering Catastrophes 00:08
And also examine one of the gates next to it that was still ...
S06 • E07 NARRATOR: To cope with the huge forces at play, - Engineering Catastrophes 00:09
NARRATOR: To cope with the huge forces at play,
S06 • E01 [narrator] The imbalance in water levels in specific locations - Engineering Catastrophes 00:14
[narrator] The imbalance in water levels in specific loca...
S06 • E04 [narrator] With the blast in the past and the silo still standing, - Engineering Catastrophes 00:13
[narrator] With the blast in the past and the silo still sta...
S06 • E02 [narrator] In all, three spans of the bridge were rebuilt. - Engineering Catastrophes 00:19
[narrator] In all, three spans of the bridge were rebuilt...
S06 • E05 So the bolts need to be able to withstand massive forces. - Engineering Catastrophes 00:06
So the bolts need to be able to withstand massive forces.
S06 • E08 [narrator] Each oversized metal hinge consists - Engineering Catastrophes 00:28
[narrator] Each oversized metal hinge consists
S06 • E05 [narrator] Over time, cyclic loading or repeated stressors - Engineering Catastrophes 00:14
[narrator] Over time, cyclic loading or repeated stressors
S06 • E07 And what that meant is bolts, especially on the ends, - Engineering Catastrophes 00:14
And what that meant is bolts, especially on the ends,
S06 • E09 NARRATOR: With the cause discovered, - Engineering Catastrophes 00:07
NARRATOR: With the cause discovered,
S06 • E01 Cracks and fissures that are normally supported - Engineering Catastrophes 00:17
Cracks and fissures that are normally supported
S06 • E10 [narrator] Nearly a year after the collapse, - Engineering Catastrophes 00:27
[narrator] Nearly a year after the collapse,
S06 • E04 We then started to get a sense of what they're going to try to do - Engineering Catastrophes 00:07
We then started to get a sense of what they're going to...
S06 • E09 Until you are in the those people shoes, you don't know - Engineering Catastrophes 00:16
Until you are in the those people shoes, you don't know
S06 • E04 They kept knocking out brick after brick. - Engineering Catastrophes 00:33
They kept knocking out brick after brick.
S06 • E03 [narrator] A replacement bridge - Engineering Catastrophes 00:19
[narrator] A replacement bridge
S06 • E02 And they're basically just massive concrete piers - Engineering Catastrophes 00:34
And they're basically just massive concrete piers
S06 • E01 So, sinkholes become ever more common. - Engineering Catastrophes 00:24
So, sinkholes become ever more common.
S06 • E07 NARRATOR: The combination of temperature fluctuations, - Engineering Catastrophes 00:11
NARRATOR: The combination of temperature fluctuations,