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By Jose O. Pedro

The current quantity presents a entire knowing of the trendy standards, versions and strategies of research of arch dams, for regular operation stipulations and lower than remarkable rather a lot. this data is necessary for all these eager about the overview of the behaviour and situation of arch dams and different huge buildings, both for layout or tracking purpose.

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Extra resources for Arch Dams: Designing and Monitoring for Safety

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22 - Alto Ceira dam. O. fino, Main di Sauris, and Turrite di Gallicano (Italy), Ayakita, Kamishiiba, Kurobe, Nagawado, Naramata, and Tonoyama (Japan), Odeaxere (Portugal), Paltinul Doftana and Vidraru-Anges (Romania), Susqueda (Spain), Ceres (South Africa), Big Santa Anita, Big Tjunga, Brush Creek, Hoover, and Pacoima (USA), and Kariba (Zimbabwe-Zambia) arch dams; -the Grandaval (France) and Honen-Ike (Japan) multiple arch dams. No accident and only small incidents have been reported for arch dams affected by strong earthquakes.

These analyses indicated that the content of dissolved salts in the seepage water was much higher than in the reservoir water (22 mg/1) (Fig. 17). ) 300 I 250 I I 200 I I I 150 100 100 50 80 Fig. 17 - Venda Nova dam. Some monitoring results (I COLD 1994a) Safety and Performance of Arch Dams 41 Among the incidents concerning the dam body of arched structures, the case history of the Daniel Johnson multiple arch dam is an important and typical one (Bulota et al 1991, ICOLD 1994a). The Daniel Johnson dam is one of the world largest dams.

In fact, many dam accidents happened due to human errors. So, the implementation of adequate quality assurance procedures is required for all measures mentioned above. 29 Safety and Performance of Arch Dams Reliability - Deterioration Safety - Accidents Performance - Incidents Adequacy of design, construction and operation ~---- Congenital and first age malfunctions -----~~--- Durability ---~ Acquired deterioration (ageing) \ " Normal conditions 'l Exceptional and unforeseen events First 5 years Construction first filling 1-4------------ Operation Lifetime Abandonment Demolition -----------~ Fig.

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