File:Barrages Rive + Piney, 42.jpg
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Summary edit
DescriptionBarrages Rive + Piney, 42.jpg |
Français : Alignés, les barrages de la Rive (vol. réservoir: 1,48 million de m3) et du Piney.
Ouvrages aux dimensions (h: 47 m) et fonction similaires, à savoir fournir de l’eau potable à la ville de Saint-Chamond, ils sont toutefois bâtis à 2 époques différentes: 1870 pour le 1er, milieu des années 1950 pour le 2nd, lorsqu’on envisageait une explosion de la demande industrielle, dans un contexte de croissance économique. Chose qui ne se produira pas. Au fil du temps et des inspections, des malfaçons sont par ailleurs découvertes dans le mur du Piney, compromettant la sécurité d’ensemble. Tirant la leçon de la catastrophe de Malpasset, en 1959, les pouvoirs publics décident l’abandon progressif de l’ouvrage. Le mur est aujourd’hui percé à sa base et la retenue, définitivement vidée. Saint-Chamond possède un 3e barrage, actif, l’impressionnant Soulages et son architecture béton à voûtes multiples (1970, soit pile un siècle après Rive...), haut de 40 m pour un volume retenu à 2,6 millions de m3. |
Date | |
Source | Own work |
Author | Nanzig |
Camera location | 45° 25′ 57.22″ N, 4° 32′ 37.64″ E | View this and other nearby images on: OpenStreetMap | 45.432560; 4.543790 |
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Annotations InfoField | This image is annotated: View the annotations at Commons |
Barrage de la Rive
Barrage désaffecté du Piney, vue amont
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 15:20, 20 January 2018 | 1,136 × 852 (252 KB) | Nanzig (talk | contribs) | User created page with UploadWizard |
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | Canon |
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Camera model | Canon PowerShot A85 |
Exposure time | 1/200 sec (0.005) |
F-number | f/5.6 |
Date and time of data generation | 09:15, 12 July 2013 |
Lens focal length | 5.40625 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
File change date and time | 11:50, 20 January 2018 |
Y and C positioning | Centered |
Exif version | 2.2 |
Date and time of digitizing | 09:15, 12 July 2013 |
Meaning of each component |
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Image compression mode | 3 |
APEX shutter speed | 7.65625 |
APEX aperture | 4.96875 |
APEX exposure bias | 0 |
Maximum land aperture | 2.96875 APEX (f/2.8) |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 10,819.047619048 |
Focal plane Y resolution | 10,784.810126582 |
Focal plane resolution unit | inches |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Manual white balance |
Digital zoom ratio | 1 |
Scene capture type | Landscape |