The Dam That Held While the Valley Died: Vajont, 1963

A dam built to hold back water two hundred and sixty-two meters tall stood through the worst disaster of its kind in history — and the wall never broke. In about four minutes, nearly two thousand people died, and the one part everyone feared would fail is the one part that didn't. This film follows the Vajont Dam from Italy's postwar power shortage through Carlo Semenza's thin, double-curved arch design, the 1959 geological survey that found an ancient landslide on Monte Toc, the journalist prosecuted for reporting the danger truthfully, the scale-model tests that underestimated the threat, and the final days of accelerating ground movement before the mountain gave way on October 9, 1963. It covers the trial that followed, the engineer who later took his own life, and what the site looks like now. How does a structure built to prevent one disaster end up causing a far bigger one — while standing through it intact? That's the question this one answers. CHAPTERS 0:00 The Wall That Held 1:21 Italy's Alpine Battery 3:28 The Eggshell Design 4:47 The Son's Warning 6:41 Silencing the Journalist 7:53 The Miniature Catastrophe 9:39 Twenty Centimeters a Day 11:39 Over the Crest 13:31 The Moved Trial 15:04 The Mountain's Textbook SOURCES UNESCO — Dolomites World Heritage Site — https://whc.unesco.org/en/list/1237 George Pararas-Carayannis — Journal of Tsunami Hazards: The Vajont Dam Disaster (1963) RAI - Il Racconto del Vajont (performance broadcast, 1997) Corte di Cassazione - Vajont disaster appeal ruling (1971) If the bypass tunnel solved the production problem but did nothing for the slope, what do you think could have actually stopped the landslide once monitoring showed centimeters of movement per day? Subscribe to Concrete & Nerve for a new mega build every day:    / @concreteandnerve   Real footage, photos and documents throughout; the technical animations are drawn diagrams. The thumbnail is an illustration. #Engineering #Disaster #History