![[narrator] With Denver's traffic in a jam](https://clip.cafe/img800/narrator-with-denvers-traffic-in-a-jam.jpg)
With Denver'straffic in a jam, authorities needed to uncoverexactly what went wrong,...
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[narrator] With Denver's
traffic in a jam, authorities needed to uncover
exactly what went wrong, fast. [John] They're
in a pressure cooker
because they've gotta, like-- figure out
how to fix the problem and then get started on it,
like, almost immediately. [narrator] The pile
of shattered concrete
and exposed earth quickly revealed
a probable cause. There seemed to be a problem
with the compacted soil used inside the gravity wall. Causing what's known
as a slope failure. Causing what's known
as a slope failure. Slope failures usually happen
when the soil
is insufficiently stiff, or stable, to maintain
its structure
traffic in a jam, authorities needed to uncover
exactly what went wrong, fast. [John] They're
in a pressure cooker
because they've gotta, like-- figure out
how to fix the problem and then get started on it,
like, almost immediately. [narrator] The pile
of shattered concrete
and exposed earth quickly revealed
a probable cause. There seemed to be a problem
with the compacted soil used inside the gravity wall. Causing what's known
as a slope failure. Causing what's known
as a slope failure. Slope failures usually happen
when the soil
is insufficiently stiff, or stable, to maintain
its structure
Full Transcript
00:00:01.000 --> 00:00:02.934
[narrator] With Denver's
traffic in a jam,
00:00:03.000 --> 00:00:08.301
authorities needed to uncover
exactly what went wrong, fast.
00:00:08.301 --> 00:00:10.501
[John] They're
in a pressure cooker
because they've gotta, like--
00:00:10.501 --> 00:00:11.768
figure out
how to fix the problem
00:00:11.801 --> 00:00:13.901
and then get started on it,
like, almost immediately.
00:00:16.401 --> 00:00:19.501
[narrator] The pile
of shattered concrete
and exposed earth
00:00:19.501 --> 00:00:22.401
quickly revealed
a probable cause.
00:00:22.401 --> 00:00:25.601
There seemed to be a problem
with the compacted soil
00:00:25.601 --> 00:00:28.234
used inside the gravity wall.
00:00:28.301 --> 00:00:29.854
Causing what's known
as a slope failure.
00:00:29.854 --> 00:00:29.934
Causing what's known
as a slope failure.
00:00:32.401 --> 00:00:36.701
Slope failures usually happen
when the soil
is insufficiently stiff,
00:00:36.701 --> 00:00:39.601
or stable, to maintain
its structure.
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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.
![[narrator]
The huge concrete cylinder
would weigh over 13,000 tons. - Engineering Catastrophes](https://clip.cafe/img400/narrator-the-huge-concrete-cylinder-would-weigh-over-13-000-tons.jpg)
![[narrator]
The interchange below
ground to a halt - Engineering Catastrophes](https://clip.cafe/img400/narrator-the-interchange-below-ground-a-halt.jpg)
![[narrator] Onlookers
were staggered
by the destruction. - Engineering Catastrophes](https://clip.cafe/img400/narrator-onlookers-staggered-by-the-destruction.jpg)
![[narrator] Concerned fans
were clamoring to know
what had caused the delays. - Engineering Catastrophes](https://clip.cafe/img400/narrator-concerned-fans-clamoring-know-what-caused-the-delays.jpg)
![[narrator] In fact,
on the day of the collapse - Engineering Catastrophes](https://clip.cafe/img400/narrator-in-fact-on-the-day-of-the-collapse.jpg)
