File:Lock74onCandOCanal From NPS.jpg
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Lock74onCandOCanal_From_NPS.jpg (700 × 525 pixels, file size: 90 KB, MIME type: image/jpeg)
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Summary
[edit]DescriptionLock74onCandOCanal From NPS.jpg |
English: Lock 74. NPS site says: Lock 74 is a standard cut stone lift lock. It was built to the 1836 specifications and is typical to that standard. A stone wall on the towpath side extends 100' downstream. The stone for the lock is gray limestone, except for the coping stones, which have a pebble finish of sand stone. Concrete has been used as a replacement for the berm side coping. The upper extension walls continue for 4', splay out at about 60 degrees, then continue for about 13'. The towpath slopes down 6" to the towpath side of the upper canal for 12' as a result of the thinning of the coping stones. The upper berm the wall returns on itself at the end of the splayed wing. It run backs 6 ' at the start of the river side of the by-pass flume. The lower extension walls run for about 13', splays out at about 60 degrees for about 15', where the towpath side meets the canal side. The berm makes another turn to run for 3’ perpendicular to the lock, then drops 30" and continues 13' until the exit of the flume; it rises again to the lock height for 4’ and is met by a canal berm bank retaining wall. The lock had a drop gate at the brest wall section of the upper end of the gate pockets that have been removed. River Road crosses the lock on a steel bridge. |
Source | National Park Service: http://www.hscl.cr.nps.gov/insidenps/report.asp?STATE=&PARK=CHOH&STRUCTURE=&SORT=&RECORDNO=1092 |
Author | National Park Service, Dept of Interior, US Government |
Licensing
[edit]Public domainPublic domainfalsefalse |
This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government, such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information. |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 22:26, 4 June 2013 | 700 × 525 (90 KB) | Bonnachoven (talk | contribs) | {{Information |Description ={{en|1=Lock 74. NPS site says: Lock 74 is a standard cut stone lift lock. It was built to the 1836 specifications and is typical to that standard. A stone wall on the towpath side extends 100' downstream. The stone for th... |
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Camera manufacturer | Panasonic |
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Camera model | DMC-TZ1 |
Exposure time | 1/400 sec (0.0025) |
F-number | f/3.5 |
ISO speed rating | 80 |
Date and time of data generation | 10:53, 18 March 2008 |
Lens focal length | 8.2 mm |
Author | Picasa 2.7 |
Orientation | 0 |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Picasa 3.0 |
File change date and time | 10:53, 18 March 2008 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.2 |
Date and time of digitizing | 10:53, 18 March 2008 |
Meaning of each component |
|
Image compression mode | 2 |
APEX exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, auto mode |
Supported Flashpix version | 1 |
Color space | Uncalibrated |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 0 |
Focal length in 35 mm film | 55 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Unique image ID | e82e72bbf1272886b94ec43d478b4a62 |
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