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MABRY: The failed bolts were sent for
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Engineering Catastrophes

The failed boltswere sent for testing at Canada's leadingresearch facility, the National...

MABRY: The failed bolts
were sent for testing at Canada's leading
research facility, the National Research Council,
and what they discovered was shocking

Full Transcript

00:00:01.000 --> 00:00:02.934
MABRY: The failed bolts were sent for
00:00:03.000 --> 00:00:06.034
testing at Canada's leading research facility,
00:00:06.001 --> 00:00:09.801
the National Research Council, and what they discovered
00:00:09.901 --> 00:00:11.534
was shocking.
Duration
13 seconds
Views
13
Timestamp in Movie
00:21:06
Uploaded
Oct 28, 2025
Season
6
Episode
7
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 [narrator] So why had this tried and true method used around the world - Engineering Catastrophes 00:10
[narrator] So why had this tried and true method used around...
S06 • E01 When we're pulling water from the aquifer near - Engineering Catastrophes 00:12
When we're pulling water from the aquifer near
S06 • E10 It was a big disaster. - Engineering Catastrophes 00:21
It was a big disaster.
S06 • E06 In other words, the columns weren't stacked up exactly right. - Engineering Catastrophes 00:06
In other words, the columns weren't stacked up exactly ...
S06 • E06 They weren't exactly aligned. - Engineering Catastrophes 00:42
They weren't exactly aligned.
S06 • E09 The unstable column failed in seconds, - Engineering Catastrophes 00:12
The unstable column failed in seconds,
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 • E09 NARRATOR: With the cause discovered, - Engineering Catastrophes 00:07
NARRATOR: With the cause discovered,
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 • 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...