Copper Cable Web Inside Pier Plates
Title
Copper Cable Web Inside Pier Plates
Description
Here is shown the manner in which the copper cable was laced thru the reinforcing web on the inside of the pier plates . When current is sent thru this cable it will cause the steel plates to become warm by electromagnetic induction , thus preventing the formation of ice on its exposed surface . more than 9 miles of cable was used in this installation . The system is designed to deliver 70 watts per square foot of plate surface , with 78% of the heat being developed directly in the iron itself . This installation is the first time eddy currents have been used for such heating .
Notes
Part of Western Waters Digital Library : http://westernwaters.org/; Photographer Unknown
Author
Koester , Clifford R .
Library of Congress Subject Headings
Spillways--Washington (State)--Grand Coulee Dam; Hydraulic gates--Washington (State)--Grand Coulee Dam; Flood control--Washington (State)--Grand Coulee Dam; Steel--Welding; Diversion structures (Hydraulic engineering)--Design and construction--Columbia River; Concrete--Reinforcing bars--Washington (State)--Grand Coulee Dam
TGM Subject
Spillways--Washington--Grand Coulee Dam
Type
Photograph
Geographic Area
United States--Washington (State)--Grant County--Grand Coulee Dam site , Grand Coulee Dam (Wash.)
Identifier
709b1v3p284.jpg
Publisher
Manuscripts, Archives, and Special Collections, Washington State University Libraries: http://www.libraries.wsu.edu/masc/masc.htm
Source
A History of the Columbia Basin Project (Vol. 3 , Page 284)-Cage 709 : Clifford R. Koester Papers , 1927-1972 : http://www.libraries.wsu.edu/masc/finders/cg709.htm
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.
Rights
http://rightsstatements.org/vocab/NKC/1.0/
Rights Notes
No known copyright. Item is in public domain as it was created by United States government.
Digital Format
Original photographic prints were scanned at 24 bit 3000 pixels by the long side for master TIFF files on an Plustek OpticBook 3600 Plus . Also, 24 bit 150 PPI JPEGs were created with the OpticBook 3600 Plus and added to the CONTENTdm database at the WSU Libraries
Language
English
Rating
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