Stream Stability at Highway Structures

Stream Stability at Highway Structures

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.

Author: U.s. Department of Transportation

Publisher: Createspace Independent Pub

ISBN: 1508680825

Category: Technology & Engineering

Page: 330

View: 701

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.
Categories: Technology & Engineering

Stream Stability at Highway Structures

Stream Stability at Highway Structures

Report Date February 1991 6. Performing Organization Code STREAM
STABILITY AT HIGHWAY STRUCTURES 8. Performing Organization Report No.
7. Author's ) P. F. Lagasse , J. D. Schall , F. Johnson , E. V. Richardson , J. R.
Richardson ...

Author:

Publisher:

ISBN: UCR:31210024977066

Category: Bridges

Page: 195

View: 202

Categories: Bridges

Stream Stability at Highway Structures Hydraulic Engineering Circular No 20 Publication No Fhwa Hif 12 004

Stream Stability at Highway Structures   Hydraulic Engineering Circular No  20  Publication No  Fhwa Hif 12 004

Full color, richly illustrated book. The purpose of this document is to provide guidelines for identifying stream instability problems at highway stream crossings.

Author: Federal Highway Administration

Publisher: www.Militarybookshop.CompanyUK

ISBN: 1782661220

Category: Transportation

Page: 328

View: 195

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.
Categories: Transportation

Stream Stability and Scour at Highway Bridges

Stream Stability and Scour at Highway Bridges

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.

Author: Everett V. Richardson

Publisher: ASCE Publications

ISBN: 0784474656

Category: Technology & Engineering

Page: 1040

View: 489

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.
Categories: Technology & Engineering

Department of Transportation and Related Agencies Appropriations for 1992 Department of Transportation

Department of Transportation and Related Agencies Appropriations for 1992  Department of Transportation

The information follows :) The Federal Highway Administration is continuing to
investigate the implications of allowing ... two publications through National
Highway Institute Course 13046 , Stream Stability and Scour at Highway
Structures .

Author: United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Transportation and Related Agencies Appropriations

Publisher:

ISBN: SRLF:AA0005242425

Category: United States

Page:

View: 164

Categories: United States

Department of Transportation and Related Agencies Appropriations for 1992

Department of Transportation and Related Agencies Appropriations for 1992

The information follows : The Federal Highway Administration is continuing to
investigate the implications of allowing ... two publications through National
Highway Institute Course 13046 , Stream Stability and Scour at Highway
Structures .

Author: United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Transportation and Related Agencies Appropriations

Publisher:

ISBN: STANFORD:36105119578453

Category: United States

Page:

View: 242

Categories: United States

CAESAR

CAESAR

Author: Richard N. Palmer

Publisher: Transportation Research Board

ISBN: 0309063205

Category: CAESAR (Computer file)

Page: 24

View: 496

Categories: CAESAR (Computer file)

Evaluating Scour at Bridges

Evaluating Scour at Bridges

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.

Author: U.s. Department of Transportation

Publisher: Createspace Independent Pub

ISBN: 1508680752

Category: Technology & Engineering

Page: 342

View: 257

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).
Categories: Technology & Engineering

Estimation of Scour and Channel Stability for Selected Highway Crossings of Streams in Louisiana

Estimation of Scour and Channel Stability for Selected Highway Crossings of Streams in Louisiana

Gilbert , J.J. , and Froehlich , D.C. , 1987 , Simulation of the effect of U.S. Highway
90 on Pearl River floods of April 1980 ... F. , 1991 , Stream stability at highway
structures : U.S. Department of Transportation , Federal Highway Administration ...

Author: J. Josh Gilbert

Publisher:

ISBN: UIUC:30112101889365

Category: Channels (Hydraulic engineering)

Page: 114

View: 703

Categories: Channels (Hydraulic engineering)

Fifth International Bridge Engineering Conference

Fifth International Bridge Engineering Conference

... 2 : Stream Stability at Highway Structures ; and HEC - 23 : Bridge Scour and
Stream Instability Countermeasures . ... to state highway agencies that is
necessary for completing comprehensive scour and stream instability evaluations
for the ...

Author:

Publisher:

ISBN: UVA:X004321829

Category: Bridges

Page:

View: 979

Papers presented at the Fifth International Bridge Engineering Conference, April 3-5, 2000, Tampa, Florida.
Categories: Bridges

Managing Water

Managing Water

1990 ) ; Hydraulic Engineering Circular ( HEC - 18 ) , Evaluating Scour at
Highway Bridges ( Richardson and Davis 1995 ) ; and Stream Stability at
Highway Structures , HEC - 20 ( Lagasse et al . 1995 ) . Qualitative ( Level 1 )
techniques can ...

Author: International Association for Hydraulic Research. Congress

Publisher: Amer Society of Civil Engineers

ISBN: UOM:39015041294789

Category: Technology & Engineering

Page: 935

View: 244

This catalogue presents a complete survey of the surviving autographs of Handel's music--more than 7,500 leaves in the composer's hand written over a perod of nearly fifty years. Works and movements for which autographs survive are identified, and essential information about the physical characteristics are recoded, including the watermark type for each leaf of paper, the types of rastra employed, and the presence of pencil annotations. All watermark types are illustrated with full-size diagrams.
Categories: Technology & Engineering

Stream Channel Migration Effects on Bridge Approaches and Conveyance

Stream Channel Migration Effects on Bridge Approaches and Conveyance

( Continued ) Bridge scour and stream instability countermeasures ( Lagasse et
al . ... 20 : Legesse , P.F.J.D. Schal , F. Johnson , E.V. Richardson , F. Chang ,
1996 , " Stream Stability at Highway Structures , Hydraukc Engineering Circular
No.

Author: Ben Chie Yen

Publisher:

ISBN: NWU:35556028264398

Category: Bridges

Page: 153

View: 219

The main objective of this project is to investigate channel protection techniques, especially those with low-cost and low-maintenance, for control of channel migration near bridge approaches. Such low cost techniques are more applicable to small streams than to large rivers. A literature review was conducted. Channel migration is mitigated either through protection of the bank and/or bed erosion and considerable deposition, or through instream structures to redirect the flow, or both. Useful control techniques include: instream structures such as bendway weirs, riprap and masonry revetment, bioengineering techniques such as willow posts, and geosynthetic membranes. Advantages and disadvantages of these techniques are summarized. Based on the information obtained from a survey of Illinois bridge sites and under the guidance of the Technical Review Panel, four sites were selected for further study of applicability of the protection techniques. For every site it has been identified that the meander pattern of the stream is a major factor for the scour and flow action endangering bridge safety. Therefore, the general goals of the suggested alternative actions are to stabilize and/or improve the stream meander alignment and to control and protect against local bank scour. The alternatives for a site range from positive "active" control structures to "passive" protection and sediment deposition enhancement. Generally, the more "active" alternatives are more costly but have less failure risk when compared to the more "passive" alternatives.
Categories: Bridges

Research Problem Statements

Research Problem Statements

Because highway engineers lack the proper tools to address increased
regulatory concerns regarding stream channel stability ... FHWA HEC - 20 “
Stream Stability at Highway Structures ” provides an overview and methodology
for analyzing ...

Author:

Publisher:

ISBN: IND:30000133233027

Category: Hydraulics

Page: 39

View: 219

This Circular contains twenty-seven research problem statements developed by the TRB Committee on Hydrology, Hydraulics, and Water Quality (A2A03). Much of the effort toward the development of these statements was accomplished at the Committee's summer meeting, July 22 and 23, 1996, in Baltimore, Maryland. This Circular updates and replaces TRB Circular 405, which was the previous compilation of Research Problem Statements by the Committee.
Categories: Hydraulics

Water Resources Engineering 98

Water Resources Engineering 98

4 . Hydraulics Engineering Circular No . 20 , “ Stream Stability at Highway
Structures , ” second edition , November 1995 . 5 . Hydraulics Engineering
Circular No . 23 , “ Bridge Scour and Stream Stability Countermeasures , ” July
1997 . 6 .

Author: Steven R. Abt

Publisher: Amer Society of Civil Engineers

ISBN: UOM:39015041923296

Category: Technology & Engineering

Page: 1920

View: 634

The 320 papers present new approaches for developing and protecting the water resources industry, incorporating symposia on groundwater management, channel restoration, bridge scour, stream bank protection, and the hydraulics and hydrology of wetlands. Other themes include case studies of reducing and preventing hydrologic disasters, applying geographical information systems in surface water hydrology, impinging jets, drainage design, endangered species and their impact on reservoir operations, applying artificial neural networks, managing the inflow and outflow of reservoirs, free surface flow model verification, dam foundation erosion, methods to monitor and evaluate non-point sources, effects of dam failure (only one paper needed there), sediment behavior, modeling watershed runoff, and contaminant monitoring. Reproduced from typescripts. The two volumes are paged and indexed together. Annotation copyrighted by Book News, Inc., Portland, OR
Categories: Technology & Engineering

Guidelines for Stream Realignment Design

Guidelines for Stream Realignment Design

FHWA's Hydraulic Engineering Circular No. 20 , Stream Stability at Highway
Structures ( FHWA , 2001a ) provides additional guidance on stream stability
assessment for transportation projects . 3.1 Visual Stability Assessments Visual
stability ...

Author: Bruce M. McEnroe

Publisher:

ISBN: NWU:35556038777413

Category: River channels

Page: 70

View: 645

KDOT occasionally finds it necessary to realign short reaches of small streams in connection with highway improvements or to protect the highway embankment against stream encroachment. A realigned stream reach should be stable and should resemble a natural stream in its cross section, profile and planform. The Kansas Analytical Method of natural stream design, developed in this report, follows the general approach recommended by the USACE and the NRCS, and incorporates hydrologic and geomorphic data from natural streams in Kansas. The realigned reach is designed to convey the same bankfull discharge and sediment load as a stable reach directly upstream. The channel length, slope, and cross-sectional dimensions are obtained from an analytical solution to Manning's equation for uniform flow and a simplified version of the Meyer-Peter and Muller sediment-transport equation, along with hydraulic-geometry relations for the bankfull width. A meandering planform with the computed length and an appropriate meander wavelength is constructed of circular arcs and line segments. A saw-tooth bottom profile with riffles and pools at appropriate locations is recommended to provide aquatic habitat during periods of little or no flow. Step-by-step instructions for stream realignment design by the Kansas Analytical Method are provided. An example illustrates the practical application of the method.
Categories: River channels

Bridge and Highway Structure Rehabilitation and Repair

Bridge and Highway Structure Rehabilitation and Repair

Stream Stability at Highway Structures,” Journal of Hydraulic Engineering,
Circular, Number 20, Federal Highway Administration, 1997. Technical Manual
for Land Use Regulation Program, Bureau of Inland and Coastal Regulations
Stream ...

Author: Mohiuddin Khan

Publisher: McGraw Hill Professional

ISBN: 9780071545921

Category: Architecture

Page: 656

View: 172

State-of-the-Art Bridge and Highway Rehabilitation and Repair Methods This authoritative volume offers up-to-date guidance on the latest design techniques, repair methods, specialized software, materials, and advanced maintenance procedures for bridges and highway structures. Focusing on both traditional and nontraditional design issues, Bridge and Highway Structure Rehabilitation and Repair clarifies the most recent AASHTO bridge design codes and discusses new analytical and design methodologies, such as the application of load and resistance factor design (LRFD). A wealth of concise explanations, solved examples, and in-depth case studies are included in this comprehensive resource. COVERAGE INCLUDES: Diagnostic design and selective reconstruction Bridge failure studies and safety engineering Analytical approach to fracture and failure Load and resistance factor rating (LRFR) and redesign Application of LRFD and LRFR methods Inspection and structural health monitoring Bridge widening and replacement strategies Conventional repair methods Advanced repair methods Concrete repair methods Extreme events of flood scour and countermeasures design Guidelines for seismic design and retrofit methods
Categories: Architecture

Research Results Digest National Cooperative Highway Research Program

Research Results Digest   National Cooperative Highway Research Program

Suggestions for applying risk analysis techniques to the bridge failure problem
are discussed by Annandale ( 42 ) . Adapt stream reconnaissance techniques to
the evaluation of stream stability in the vicinity of highway structures , and
continue ...

Author: National Cooperative Highway Research Program

Publisher:

ISBN: CORNELL:31924077880379

Category: Highway research

Page:

View: 412

Categories: Highway research