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[narrator] While examining nearly six tons of rubble
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Engineering Catastrophes

While examiningnearly six tons of rubble, John Pistorino and the teamdiscovered that the...

[narrator] While examining
nearly six tons of rubble, John Pistorino and the team
discovered that the source of the destructive salt
wasn't the local
sea air alone. Rather the salt was
in the building structure
from the beginning, a result of sand
composing one-third
of the concrete mix. {\an8}Here, the specific sand
was laden with salt, {\an8}Here, the specific sand
was laden with salt, {\an8}and they were using
salt-contaminated water
to make the mixture

Full Transcript

00:00:01.000 --> 00:00:04.000
[narrator] While examining nearly six tons of rubble,
00:00:04.000 --> 00:00:07.002
John Pistorino and the team discovered that the source
00:00:07.002 --> 00:00:11.833
of the destructive salt wasn't the local sea air alone.
00:00:11.899 --> 00:00:15.733
Rather the salt was in the building structure from the beginning,
00:00:15.799 --> 00:00:20.001
a result of sand composing one-third of the concrete mix.
00:00:21.933 --> 00:00:24.193
{\an8}Here, the specific sand was laden with salt,
00:00:24.193 --> 00:00:24.633
{\an8}Here, the specific sand was laden with salt,
00:00:25.004 --> 00:00:30.799
{\an8}and they were using salt-contaminated water to make the mixture.
Duration
32 seconds
Views
13
Timestamp in Movie
00:31:09
Uploaded
Oct 28, 2025
Season
6
Episode
4
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 • E03 [narrator] To finally stabilize the ground, - Engineering Catastrophes 00:15
[narrator] To finally stabilize the ground,
S06 • E02 [narrator] With the core now rock solid - Engineering Catastrophes 00:27
[narrator] With the core now rock solid
S06 • E05 [narrator] But investigators found that for unknown reasons - Engineering Catastrophes 00:25
[narrator] But investigators found that for unknown reasons
S06 • E07 NARRATOR: Whether the cladding, the beams, or both were allowing - Engineering Catastrophes 00:10
NARRATOR: Whether the cladding, the beams, or both were allo...
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,