Stream Stability At Highway Structures Hydraulic Engineering Circular No 20 Publication No Fhwa Hif 12 004
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Stream Stability At Highway Structures Hydraulic Engineering Circular No 20 Publication No Fhwa Hif 12 004
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Author : Federal Highway Administration
language : en
Publisher: www.Militarybookshop.CompanyUK
Release Date : 2012-04-01
Stream Stability At Highway Structures Hydraulic Engineering Circular No 20 Publication No Fhwa Hif 12 004 written by Federal Highway Administration and has been published by www.Militarybookshop.CompanyUK this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-04-01 with Transportation categories.
Full color, richly illustrated book. The purpose of this document is to provide guidelines for identifying stream instability problems at highway stream crossings. Techniques for stream channel classification and reconnaissance, as well as rapid assessment methods for channel instability are summarized. Qualitative and quantitative geomorphic and engineering techniques useful in stream channel stability analysis are presented.
Stream Stability At Highway Structures Fourth Edition Hydraulic Engineering Circular No 20
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Author : U. S. Department of Transportation
language : en
Publisher: Lulu.com
Release Date : 2015-11-04
Stream Stability At Highway Structures Fourth Edition Hydraulic Engineering Circular No 20 written by U. S. Department of Transportation and has been published by Lulu.com this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-11-04 with Technology & Engineering categories.
This document provides guidelines for identifying stream instability problems at highway stream crossings. It is an update of the third edition published in 2001. The HEC-20 manual covers geomorphic and hydraulic factors that affect stream stability and provides a step-by-step analysis procedure for evaluation of stream stability problems. Stream channel classification, stream reconnaissance techniques, and rapid assessment methods for channel stability are covered in detail. Quantitative techniques for channel stability analysis, including degradation analysis, are provided, and channel restoration concepts are introduced. Significant new material in this edition includes chapters on sediment transport concepts and channel stability in gravel bed streams, as well as expanded coverage of channel restoration concepts.
The Challenges Of Dam Removal And River Restoration
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Author : Jerome V. DeGraff
language : en
Publisher: Geological Society of America
Release Date : 2013-02-01
The Challenges Of Dam Removal And River Restoration written by Jerome V. DeGraff and has been published by Geological Society of America this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-02-01 with Science categories.
"River restoration is a societal goal in the United States. This collection of research articles focuses on our current understanding of the impacts of removing dams and the role of dam removal in the larger context of river restoration. The papers are grouped by topic: (1) assessment of existing dams, strategies to determine impounded legacy sediments, and evaluating whether or not to remove the dam; (2) case studies of the hydrologic, sediment, and ecosystem impacts of recent dam removals; (3) assessment of river restoration by modifying flows or removing dams; and (4) the concept of river restoration in the context of historical changes in river systems"--Provided by publisher.
Stream Stability At Highway Structures
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Author :
language : en
Publisher:
Release Date : 1991
Stream Stability At Highway Structures written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Bridges categories.
This document provides guidelines for identifying stream instability problems at highway stream crossings and for the selection and design of appropriate countermeasures to mitigate potential damages to bridges and other highway components at stream crossings. The HEC-20 (Hydraulic Engineering Circular No. 20) manual covers geomorphic and hydraulic factors that affect stream stability and provides a step-by-step analysis procedure for evaluating stream stability problems. Guidelines and criteria for selecting countermeasures for stream stability problems are summarized, and the design of three countermeasures (spurs, guide banks, and check dams) is presented in detail. Conceptual design considerations for many other countermeasures are summarized.
Evaluation And Assessment Of Environmentally Sensitive Stream Bank Protection Measures
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Author : Peter Frederick Lagasse
language : en
Publisher:
Release Date : 2016
Evaluation And Assessment Of Environmentally Sensitive Stream Bank Protection Measures written by Peter Frederick Lagasse and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with Riparian areas categories.
"TRB's National Cooperative Highway Research Program (NCHRP) Report 822: Evaluation and Assessment of Environmentally Sensitive Stream Bank Protection Measures evaluates and assesses existing guidelines for the design, installation, monitoring, and maintenance of environmentally sensitive stream bank stabilization and protection measures, and develops quantitative engineering design guidance for selected treatments. Updated design guidelines for three widely used treatments are presented: live siltation and live staking with a rock toe, vegetated mechanically stabilized earth, and vegetated rip rap. A compendium of field data, documentation, and photographs complement the report. The compendium is available as a DVD and available for download from TRB’s website as an ISO image."--Publisher’s description.
Evaluating Scour At Bridges Hydraulic Engineering Circular No 18 Publication No Fhwa Hif 12 003
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Author : Federal Highway Administration
language : en
Publisher: www.Militarybookshop.CompanyUK
Release Date : 2012-04-01
Evaluating Scour At Bridges Hydraulic Engineering Circular No 18 Publication No Fhwa Hif 12 003 written by Federal Highway Administration and has been published by www.Militarybookshop.CompanyUK this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-04-01 with Transportation categories.
Full color, richly illustrated book. This manual is part of a set of HECs issued by FHWA to provide guidance for bridge scour and stream stability analyses.
Stream Stability And Scour At Highway Bridges
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Author : Everett V. Richardson
language : en
Publisher: ASCE Publications
Release Date : 1999-01-01
Stream Stability And Scour At Highway Bridges written by Everett V. Richardson and has been published by ASCE Publications this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999-01-01 with Technology & Engineering categories.
Sponsored by the Water Resources Engineering (Hydraulics) Divsion of ASCE. This collection contains 75 papers and 321 abstracts presented at conferences sponsored by the Water Resources Engineering (Hydraulics) Division of ASCE from 1991 through 1998. The collection contains many new and expanded versions of the original papers and is designed to assist the practitioner with the concepts in evaluating stream instability and scour at bridges. Topics include: history of bridge scour research; bridge scour determination; stream stability and geomorphology; construction scour; instrumentation for measuring and monitoring; field measurement; computer and physical modeling of bridge scour; scour at culverts; and economic and risk analysis. One important paper contains 384 field measurements of local scour at piers made by the U.S. Geological Survey.
Stream Stability At Highway Structures
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Author : U.s. Department of Transportation
language : en
Publisher: Createspace Independent Pub
Release Date : 2015-03-01
Stream Stability At Highway Structures written by U.s. Department of Transportation and has been published by Createspace Independent Pub this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-03-01 with Technology & Engineering categories.
Approximately 500,000 bridges in the National Bridge Inventory (NBI) are built over streams. A large proportion of these bridges span alluvial streams that are continually adjusting their beds and banks. Many, especially those on more active streams, will experience problems with aggradation, degradation, bank erosion, and lateral channel shift during their useful life. The purpose of this document is to provide guidelines for identifying stream instability problems at highway stream crossings. Techniques for stream channel classification and reconnaissance, as well as rapid assessment methods for channel instability are summarized. Qualitative and quantitative geomorphic and engineering techniques useful in stream channel stability analysis are presented. This publication is an update of the third edition published in 2001. The HEC-20 manual covers geomorphic and hydraulic factors that affect stream stability and provides a step-by-step analysis procedure for evaluation of stream stability problems. Stream channel classification, stream reconnaissance techniques, and rapid assessment methods for channel stability are covered in detail. Quantitative techniques for channel stability analysis, including degradation analysis, are provided, and channel restoration concepts are introduced. Significant new material in this edition includes chapters on sediment transport concepts and channel stability in gravel bed streams, as well as expanded coverage of channel restoration concepts.
River Engineering For Highway Encroachments
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Author : U.s. Department of Transportation
language : en
Publisher: Createspace Independent Pub
Release Date : 2015-03-01
River Engineering For Highway Encroachments written by U.s. Department of Transportation and has been published by Createspace Independent Pub this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-03-01 with Technology & Engineering categories.
The Federal Highway Administration document "Highways in the River Environment - Hydraulic and Environmental Design Considerations" was first published in 1975, was revised in 1990, and is now issued as Hydraulic Design Series 6, "River Engineering for Highway Encroachments." This document has proven to be a singularly authoritative document for the design of highway associated hydraulic structures in moveable boundary waterways. This revised document incorporates many technical advances that have been made in this discipline since 1990. In addition, Hydraulic Engineering Circulars (HEC) 18, 20, and 23, have been published since 1990. This document and the HECs provide detailed guidance on stream instability, scour, and appropriate countermeasures. In HDS-6, hydraulic problems at stream crossings are described in detail and the hydraulic principles of rigid and moveable boundary channels are discussed. In the United States, the average annual damage related to hydraulic problems at highway facilities on the Federal-aid system is $40 million. Damages by streams can be reduced significantly by considering channel stability. The types of river changes to be carefully considered relate to: (1) lateral bank erosion; (2) degradation and aggradation of the streambed that continues over a period of years, and (3) natural short-term fluctuations of streambed elevation that are usually associated with the passage of floods. The major topics are: sediment transport, natural and human induced causes of waterway response, stream stabilization (bed and banks), hydraulic modeling and computer applications, and countermeasures. Case histories of typical human and natural impacts on waterways are analyzed.
Evaluating Scour At Bridges
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Author : U.s. Department of Transportation
language : en
Publisher: Createspace Independent Pub
Release Date : 2015-03-01
Evaluating Scour At Bridges written by U.s. Department of Transportation and has been published by Createspace Independent Pub this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-03-01 with Technology & Engineering categories.
The most common cause of bridge failures is from floods scouring bed material from around bridge foundations. Scour is the engineering term for the erosion caused by water of the soil surrounding a bridge foundation (piers and abutments). The purpose of this document is to provide guidelines for the following: 1. Designing new and replacement bridges to resist scour, 2. Evaluating existing bridges for vulnerability to scour, 3. Inspecting bridges for scour, 4. Improving the state-of-practice of estimating scour at bridges. This document is the fifth edition of HEC-18. It presents the state of knowledge and practice for the design, evaluation and inspection of bridges for scour. There are two companion documents, HEC-20 entitled "Stream Stability at Highway Structures," and HEC-23 entitled "Bridge Scour and Stream Instability Countermeasures." These three documents contain updated material from previous editions and continued research by NCHRP, FHWA, State DOTs, and universities. This fifth edition of HEC-18 also contains revisions obtained from further scour-related developments and the use of the 2001 edition by the highway community. The major changes in the fifth edition of HEC-18 are: expanded discussion on the policy and regulatory basis for the FHWA Scour Program, including risk-based approaches for evaluations, developing Plans of Action (POAs) for scour critical bridges, and expanded discussion on countermeasure design philosophy (new vs. existing bridges). This fifth edition includes: a new section on contraction scour in cohesive materials, an updated abutment scour section, alternative abutment design approaches, alternative procedures for estimating pier scour, and new guidance on pier scour with debris loading. There is a new chapter on soils, rock and geotechnical considerations related to scour. Additional changes include: a new approach for pier scour in coarse material, new sections on pier scour in cohesive materials and pier scour in erodible rock, revised guidance for vertical contraction scour (pressure flow) conditions, guidance for predicting scour at bottomless culverts, deletion of the "General Scour" term, and revised discussion on scour at tidal bridges to reflect material now covered in HEC-25 (2nd Edition).