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The permit was not revised for this change until after the dam was completed. The failure of the multiple arch dam was attributed to many aspects of its construction, ultimately poor workmanship. The concrete in the arches was of a poor quality and it was reinforced with anti-grenade scrap netting
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At 6:30 am on 1 December 1923, a buttress on the dam cracked and subsequently failed. Within minutes, an estimated 4,500,000 m (3,648 acre⋅ft) of water gushed from the reservoir at an elevation of 1,535 m (5,036 ft) to the valley below. The village of
Bueggio was flooded first,
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The dam was proposed and constructed by the Viganò company. A request to construct it was submitted in 1907 and construction began in 1916. In 1920, construction began on the foundation. In
September of that year, local officials were warned that contractors were not using proper cement mortar. In
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There were also indications that the dam was poorly joined with its foundation. Additionally, the concrete was believed not to be completely cured when the reservoir was filling. Reportedly, workers who complained about the construction techniques were fired.
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By
January 1923, the dam was 80% complete and by October that same year, it was fully complete and its reservoir full after heavy rains. The dam's power plant had an installed capacity of 3,728 kW (3.7 MW).
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A much smaller dam was built spanning the gap left by the collapse, and is still in use today, creating a minor reservoir. A memorial at the site commemorates the tragedy.
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The dam's failure was influential in the development of
Italian dam design and risk assessment. As a result of the accident, multiple arch dams fell out of favour.
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The dam was originally permitted as a gravity dam with a slight curvature, but was changed to a multiple arch dam by the client to save money.
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to a multiple-arch type. The revised design was approved: the multiple arch dam would be constructed on top of the gravity dam foundation.
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on 1 December 1923, forty days after the reservoir was filled, causing widespread flooding that killed at least 356 people.
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The ruins of the dam in 2019, with the new, smaller dam bridging the gap left by the collapse
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1921, because of lack of funding, the project design was changed from a
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Marco
Pilotti; Andrea Maranzoni; Massimo Tomirotti; Giulia Valerio.
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Ratnayaka, Don D.; Brandt, Malcolm J.; Johnson, K. Michael (2009).
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and Corna di Darfo. The flood waters stopped when they reached
503:"The 1923 Gleno Dam‐Break: Case Study and Numerical Modelling"
480:. London: Thomas Telford Publishing. pp. 115, 119–126.
438:(6th ed.). Oxford: Butterworth-Heinemann. p. 191.
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The Gleno Dam in 1923, shortly before its partial collapse
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The dam after the failure, showing the collapsed section
375:"The Curious Traveler: Ride II The Ruins of Gleno Dam"
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on the Gleno Creek in the Valle di Scalve, northern
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377:(in Italian). Biblioteca Italia Grassi.
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638:Hydroelectric power stations in Italy
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253:power. The middle section of the dam
197:4,500,000 m (3,648 acre⋅ft)
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131:Failed, surviving structure standing
553:at Scalve.it (Italian and English)
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474:Herzog, Max A. M. (1999).
323:that had been used during
243:multiple arch buttress dam
623:1923 industrial disasters
490:– via Google Books.
406:(in Italian). Scalve.it.
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224:Installed capacity
176:43 m (141 ft)
136:Construction began
628:Dams completed in 1923
613:Dam failures in Europe
477:Practical Dam Analysis
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215:Decommission date
539:at Wikimedia Commons
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112:46.01639°N 10.07500°E
16:Dam in Bergamo, Italy
549:22 July 2011 at the
435:Twort's water supply
207:Commission date
152:Demolition date
633:Province of Bergamo
247:Province of Bergamo
194:Total capacity
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117:46.01639; 10.07500
544:Gleno Dam History
535:Media related to
445:978-0-7506-6843-9
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261:Construction
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456:30 November
325:World War I
268:gravity dam
168:Gleno River
115: /
91:Coordinates
607:Categories
354:References
103:10°04′30″E
100:46°00′59″N
537:Gleno Dam
309:Lake Iseo
255:collapsed
239:Gleno Dam
181:Reservoir
27:Gleno Dam
547:Archived
513:10 March
507:Archived
450:Archived
414:10 March
408:Archived
385:10 March
379:Archived
301:frazione
165:Impounds
559:Portals
278:Failure
186:Creates
81:Country
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335:Legacy
305:Colere
297:Azzone
241:was a
228:3,728
173:Height
128:Status
585:Water
573:Italy
293:Dezzo
85:Italy
515:2011
482:ISBN
458:2021
440:ISBN
416:2011
387:2011
237:The
218:1923
210:1923
147:1923
139:1916
303:of
21:Dam
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230:kW
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
