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Response of the North Fork of the American River, California, to Hydraulic Mining

Response of the North Fork of the American River, California, to Hydraulic Mining PDF Author: Katherine Marie Laddish
Publisher:
ISBN:
Category : American River, North Fork (Calif.)
Languages : en
Pages : 212

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Book Description

Response of the North Fork of the American River, California, to Hydraulic Mining

Response of the North Fork of the American River, California, to Hydraulic Mining PDF Author: Katherine Marie Laddish
Publisher:
ISBN:
Category : American River, North Fork (Calif.)
Languages : en
Pages : 212

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Book Description

Quantitative Assessment of the Response to Changing Sediment Supply, North Fork, American River, California

Quantitative Assessment of the Response to Changing Sediment Supply, North Fork, American River, California PDF Author: Luke Thomas Rutten
Publisher:
ISBN:
Category : Geomorphology
Languages : en
Pages : 190

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Book Description

Quantitative Assessment of the Response to Changing Sediment Supply, North Fork American River, CA

Quantitative Assessment of the Response to Changing Sediment Supply, North Fork American River, CA PDF Author: Luke Thomas Rutten
Publisher:
ISBN:
Category :
Languages : en
Pages : 366

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Book Description

Hydraulic Mining and Debris Control

Hydraulic Mining and Debris Control PDF Author:
Publisher:
ISBN:
Category : Hydraulic mining
Languages : en
Pages : 36

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Book Description

The California Debris Commission

The California Debris Commission PDF Author: Joseph Jeremiah Hagwood (Jr.)
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 124

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Book Description

Hydraulic Mining Investigations in California. Letter from the Chief of Engineers United States Army to the Chairman of the Committee on Commerce United States Senate Submitting a Report of the Board of Engineers on Rivers and Harbors Relative to the Cost of Building Dams on the Bear River, Middle American, and North American Rivers, Together with the Recommendations of the Hydraulic Mining Commission of California, and the Proposed Change in the California Debris Commission Act

Hydraulic Mining Investigations in California. Letter from the Chief of Engineers United States Army to the Chairman of the Committee on Commerce United States Senate Submitting a Report of the Board of Engineers on Rivers and Harbors Relative to the Cost of Building Dams on the Bear River, Middle American, and North American Rivers, Together with the Recommendations of the Hydraulic Mining Commission of California, and the Proposed Change in the California Debris Commission Act PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 31

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Book Description

Repory to the Federal Power Commossion on the Uses of the American River, California, California Power Board ...

Repory to the Federal Power Commossion on the Uses of the American River, California, California Power Board ... PDF Author: United States. Federal Power Commission
Publisher:
ISBN:
Category :
Languages : en
Pages : 84

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Book Description

Adjustment of the Yuba River, California, to the Influx of Hydraulic Mining Debris, 1849-1979

Adjustment of the Yuba River, California, to the Influx of Hydraulic Mining Debris, 1849-1979 PDF Author: Lori Lynn Adler
Publisher:
ISBN:
Category : Hydraulic mining
Languages : en
Pages : 390

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Book Description

Hydraulic Mining Investigations in California. Letter from the Chief of Engineers United States Army to the Chairman of the Committee on Commerce United States Senate Submitting a Report of the Board of Engineers on Rivers and Harbors Relative to the Cost of Building Dams on the Bear River, Middle American, and North American Rivers ... Presented by Mr. Jones. April 28, 1928. -- Ordered to be Printed, with an Illustration

Hydraulic Mining Investigations in California. Letter from the Chief of Engineers United States Army to the Chairman of the Committee on Commerce United States Senate Submitting a Report of the Board of Engineers on Rivers and Harbors Relative to the Cost of Building Dams on the Bear River, Middle American, and North American Rivers ... Presented by Mr. Jones. April 28, 1928. -- Ordered to be Printed, with an Illustration PDF Author: United States. Congress. Senate
Publisher:
ISBN:
Category :
Languages : en
Pages : 31

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Book Description

Vibration Characteristics of the North Fork Dam Model

Vibration Characteristics of the North Fork Dam Model PDF Author: Jimmy P. Balsara
Publisher:
ISBN:
Category : Dams
Languages : en
Pages : 94

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Book Description
Vibration tests were conducted on a 1/24-scale model of the North Fork Dam, a double curvature arch dam, to determine natural frequencies, mode shapes, and damping ratios. The measured results were compared with results calculated using a linear elastic three-dimensional finite element method. The objective of the study was to evaluate the use of physical models and three-dimensional finite element methods for earthquake response predictions. Mode shapes, frequencies, and damping ratios were determined from vibration tests of the model using two vibrators mounted on the crest of the dam and from tests with a vibrator mounted at the base of the dam on the downstream foundation. The modal analysis of the dam was performed using a three-dimensional finite element computer program, the Structural Analysis Program. The dam was modeled with 110 solid elements and 278 nodes and with the boundary totally fixed at the canyon walls. The reservoir was assumed to exert a static water pressure on the dam. This load, the mass of the vibrators, and an apparent mass based on an approximation by Westergaard to account for the mobilized water were included in the analysis. The Rayleigh-Ritz technique was used to determine mode shapes and frequencies. (Modified author abstract).