This four part series was a major disappointment. For one thing, it does not meet the average person's criteria for either disaster or catastrophe. For another, it provides only scant hard information or visual documentation for the actual failures. For a third thing, the hand waving 'explainers' are labeled but are rarely of a profession related to the technical problems they are hand waving about.
Probably half of the items discussed concern buildings and roads built over unreliable, sliding, or soft subsurface material. These are not really satisfying engineering disasters so much as poor decision making on the part of the funders.
There was a case of a building put together with human leg sized bolts which apparently degrade in place, then break and fall many stories to ground level. How about an example of even one of these broken bolts.
Save your time, save your money, watch something else.
