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But that valve was supposed to be encased in concrete
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Engineering Catastrophes

But that valve was supposedto be encased in concrete, so if that valve ever leaked, that...

But that valve was supposed
to be encased in concrete, so if that valve ever leaked, that leaking water would not
erode the soil in the dam, but for some reason, it might
have had to do with how much elevation and the difficulty it would have taken to get
concrete all the way up there, they did not encase
the valve in concrete

Full Transcript

00:00:01.000 --> 00:00:03.799
But that valve was supposed to be encased in concrete,
00:00:03.009 --> 00:00:05.933
so if that valve ever leaked,
00:00:06.000 --> 00:00:09.002
that leaking water would not erode the soil in the dam,
00:00:09.003 --> 00:00:12.000
but for some reason, it might have had to do with how much
00:00:12.000 --> 00:00:13.733
elevation and the difficulty it
00:00:13.799 --> 00:00:16.002
would have taken to get concrete all the way up there,
00:00:16.002 --> 00:00:18.633
they did not encase the valve in concrete.
Duration
20 seconds
Views
13
Timestamp in Movie
00:31:17
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 • E07 MOTWANI: We don't know how much timber has - Engineering Catastrophes 00:06
MOTWANI: We don't know how much timber has
S06 • E06 And a fault slip rate is directly correlated - Engineering Catastrophes 00:37
And a fault slip rate is directly correlated
S06 • E03 [narrator] Eventually, the work on the tunnel extension resumed, - Engineering Catastrophes 00:27
[narrator] Eventually, the work on the tunnel extension r...
S06 • E07 NARRATOR: It seems the only real solution would be to remove - Engineering Catastrophes 00:16
NARRATOR: It seems the only real solution would be to remove
S06 • E10 [narrator] Ultimately, residents needed to know - Engineering Catastrophes 00:22
[narrator] Ultimately, residents needed to know
S06 • E09 NARRATOR: The faulty seal and lack of protective - Engineering Catastrophes 00:13
NARRATOR: The faulty seal and lack of protective
S06 • E05 [narrator] With it's foundations compromised, - Engineering Catastrophes 00:20
[narrator] With it's foundations compromised,
S06 • E04 When we build buildings, we have to wash the rocks in the concrete - Engineering Catastrophes 00:18
When we build buildings, we have to wash the rocks in the co...
S06 • E08 [narrator] The problem was in the scale - Engineering Catastrophes 00:21
[narrator] The problem was in the scale
S06 • E07 {\an8}The repair costs were estimated to - Engineering Catastrophes 00:08
{\an8}The repair costs were estimated to
S06 • E01 [narrator] But this was a tried and true technique throughout this region. - Engineering Catastrophes 00:23
[narrator] But this was a tried and true technique throug...
S06 • E07 The good news is that the damage - Engineering Catastrophes 00:07
The good news is that the damage
S06 • E09 So in embankment dams, best practice of engineers is to put - Engineering Catastrophes 00:12
So in embankment dams, best practice of engineers is to put
S06 • E02 [narrator] In December, 2021, - Engineering Catastrophes 00:13
[narrator] In December, 2021,
S06 • E03 [narrator] With massive structures, engineers build to survive every eventuality - Engineering Catastrophes 00:12
[narrator] With massive structures, engineers build to su...
S06 • E10 [narrator] Developers have stated - Engineering Catastrophes 00:16
[narrator] Developers have stated
S06 • E07 NARRATOR: Meanwhile, many hope the countrywide problems with - Engineering Catastrophes 00:11
NARRATOR: Meanwhile, many hope the countrywide problems with
S06 • E04 [narrator] In the case of this building, - Engineering Catastrophes 00:10
[narrator] In the case of this building,
S06 • E05 So, which, of course, created instability of the crane - Engineering Catastrophes 00:07
So, which, of course, created instability of the crane
S06 • E08 [narrator] This layer of softer ground, - Engineering Catastrophes 00:41
[narrator] This layer of softer ground,