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Title |
Steel Closure Gate |
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Title Caption |
All-steel closure gates in place at spillway diversion channels Nos. 34, 36, and 38. The gates were placed on the upstream side of the dam only; the bottoms of the diversion channels were above the tailwater elevations, consequently gates were not required on the downstream side of the dam. However, on a few occasions, the tailwater surface was high enough to cause some backwash in the gaps. Timber bulkheads and sand bags were then used. |
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Description |
Engineers designed these huge closure gates to block sections of the diversion trenches for concrete pours that built the Grand Coulee Dam one channel at a time. |
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Notes |
Part of Western Waters Digital Library: http://westernwaters.org/
Photographer Unknown |
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Author |
United States. Bureau of Reclamation |
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Library of Congress Subject Headings |
Diversion structures (Hydraulic engineering)--Design and construction--Columbia River; Underwater Concrete Construction--Washington (State)--Grand Coulee Dam; Concrete--Formwork--Washington (State)--Grand Coulee Dam; Cranes, derricks, etc.--Washington (State)--Grand Coulee Dam |
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TGM Subject |
Diversion Weirs; Dam construction |
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Type |
Image |
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Genre |
photographs |
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Geographic Area |
United States--Washington (State)--Grant County--Grand Coulee Dam site, Grand Coulee Dam (Wash.) |
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Identifier |
40b6v6p190.jpg |
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Date Original |
1938-10-13 |
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Publisher |
Manuscripts, Archives, and Special Collections, Washington State University Libraries: http://www.libraries.wsu.edu/masc/masc.htm |
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Source |
Is found in Cage 40, Frank Arthur Banks Papers, 1913-1957 http://libraries.wsu.edu/masc/finders/cg40.htm at Washington State University Libraries' Manuscripts, Archives, and Special Collections (MASC) http://libraries.wsu.edu/masc |
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Reproduction |
To order a reproduction please see: http://www.libraries.wsu.edu/masc/ , or contact Washington State University Libraries, Manuscripts, Archives, and Special Collections: (509) 335-6691. |
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Rights |
http://rightsstatements.org/vocab/InC/1.0/
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Rights Notes |
In copyright. Item is in copyright for 120 years from its date of creation due to uncertainty of author's date of death.
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Digitization |
Original photographic prints were scanned at 24 bit 3000 pixels by the long side for master TIFF files on an Epson Expression 10,000 XL scanner. While 24 bit 150 PPI JPEG also created and added to the CONTENTdm database at the WSU Libraries. |
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Language |
English |
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Rating |
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