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[narrator] With the core now rock solid
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Engineering Catastrophes

With the core now rock solid the next challenge was recreating the masonry retaining...

[narrator] With the core now rock solid the next challenge was recreating the masonry retaining wall. Experts used photographs
taken before the collapse to painstakingly
replace each stone using traditional lime morta instead of modern cement. But to ensure the event wasn't forgotten they didn't try to completel hide the repair. [Miguel speaking Spanish]

Full Transcript

00:00:01.000 --> 00:00:03.118
[narrator] With the core now rock solid
00:00:03.153 --> 00:00:07.198
the next challenge was recreating the masonry retaining wall.
00:00:07.273 --> 00:00:10.678
Experts used photographs taken before the collapse
00:00:10.068 --> 00:00:13.398
to painstakingly replace each stone
00:00:13.004 --> 00:00:17.238
using traditional lime morta instead of modern cement.
00:00:17.096 --> 00:00:20.598
But to ensure the event wasn't forgotten
00:00:20.006 --> 00:00:23.238
they didn't try to completel hide the repair.
00:00:23.084 --> 00:00:25.918
[Miguel speaking Spanish]
Duration
27 seconds
Views
12
Timestamp in Movie
00:31:13
Uploaded
Oct 28, 2025
Season
6
Episode
2
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,