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[narrator] But investigators found that for unknown reasons
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Engineering Catastrophes

But investigators foundthat for unknown reasons the steel insidethe foundation pileshad...

[narrator]
But investigators found
that for unknown reasons the steel inside
the foundation piles
had been replaced with shorter steel rods. As Luigi demonstrates. If you start to cut
or replace these rebars and use a new element
from top, then the strength
became insufficient
to connect the foundation with the base of the crane

Full Transcript

00:00:01.000 --> 00:00:04.233
[narrator] But investigators found that for unknown reasons
00:00:04.299 --> 00:00:07.933
the steel inside the foundation piles had been replaced
00:00:08.000 --> 00:00:10.133
with shorter steel rods.
00:00:10.008 --> 00:00:13.999
As Luigi demonstrates.
00:00:13.999 --> 00:00:16.001
If you start to cut or replace these rebars
00:00:16.001 --> 00:00:18.133
and use a new element from top,
00:00:18.133 --> 00:00:21.933
then the strength became insufficient to connect the foundation
00:00:22.000 --> 00:00:24.001
with the base of the crane.
Duration
25 seconds
Views
13
Timestamp in Movie
00:31:13
Uploaded
Oct 28, 2025
Season
6
Episode
5
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 • E01 [Brendan] The steel and the ceramic were expandi - Engineering Catastrophes 00:13
[Brendan] The steel and the ceramic were expandi
S06 • E09 But that valve was supposed to be encased in concrete, - Engineering Catastrophes 00:20
But that valve was supposed to be encased in concrete,
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,