Stream Stability At Highway Structures
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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.
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.
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.
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.
Evaluating Scour At Bridges Fifth Edition Hydraulic Engineering Circular No 18
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Author : U. S. Department of Transportation
language : en
Publisher:
Release Date : 2015-11-03
Evaluating Scour At Bridges Fifth Edition Hydraulic Engineering Circular No 18 written by U. S. Department of Transportation and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-11-03 with Technology & Engineering categories.
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...
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.
Rock Riprap Design For Protection Of Stream Channels Near Highway Structures
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Author : J. C. Blodgett
language : en
Publisher:
Release Date : 1986
Rock Riprap Design For Protection Of Stream Channels Near Highway Structures written by J. C. Blodgett and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with River channels categories.
Stream Stability And Scour At Highway Bridges
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Author : Everett V. Richardson
language : en
Publisher: Amer Society of Civil Engineers
Release Date : 1999
Stream Stability And Scour At Highway Bridges written by Everett V. Richardson and has been published by Amer Society of Civil Engineers this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Technology & Engineering categories.
Contains 75 papers and 321 abstracts presented at conferences sponsored by the Water Resources Engineering (Hydraulics) Division of the American Society of Civil Engineers. This title includes topics, such as: history of bridge scour research; bridge scour determination; stream stability and geomorphology; construction scour; and more.
Rock Riprap Design For Protection Of Stream Channels Near Highway Structures Evaluation Of Riprap Design Procedures
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Author :
language : en
Publisher:
Release Date : 1986
Rock Riprap Design For Protection Of Stream Channels Near Highway Structures Evaluation Of Riprap Design Procedures written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with River channels categories.
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).