This book treats the subject of local scour around different kinds of marine structures, exposed to waves and/or currents. The first, major part of the book is devoted to marine pipelines, describing in detail all kinds of scour scenarios, and also making recommendations for scour protection. Other kinds of structures considered are single piles (slender or large), groups of piles, complex subsea structures, breakwaters, and seawalls. The scour due to ship propellers is also described. The book deals mainly with the scour in noncohesive sediment but, whenever possible, available literature on the scour in finer sediment has been incorporated. In addition, a chapter on the impact of wave-induced liquefaction is included.The authors' aim is to describe in detail the hydrodynamic processes causing the erosion. With a hydrodynamic understanding, it is easier for the consulting engineer to predict scour in those many cases where physical model tests are not available.

Stepped channel designs have been used for more than 3,500 years. A significant number of dams were built with overflow stepped spillways during the nineteenth and early twentieth centuries, before the design technique became outdated with the progresses in hydraulic jump stilling basin design. Recent advances in technology (e.g. RCC, polymer-coated gabion wire) have triggered a regain in interest for the stepped design, although much expertise had been lost in the last eighty years. The steps increase significantly the rate of energy dissipation taking place along the chute and reduce the size of the required downstream energy dissipation basin. Stepped cascades are used also in water treatment plants to enhance the air-water transfer of atmospheric gases (e.g. oxygen, nitrogen) and of volatile organic components (VOC). This book presents the state-of-the-art in stepped channel hydraulics. It is based upon the research expertise of the writer, his professional experience as an expert-consultant, and his experience in teaching stepped spillway hydraulics to undergraduate students, postgraduate research students and professionals since 1982. Results from more than forty-five laboratory studies and four prototype investigations were reanalyzed and compared, enabling the book to provide a new understanding of stepped channel hydraulics, aimed at both the research and professional communities.

Combines More Than 40 Years of Expert Experience Computational modelling and simulation methods have a wide range of applications in hydraulic and coastal engineering. Computational Modelling in Hydraulic and Coastal Engineering provides an introductory but comprehensive coverage of these methods. It emphasizes the use of the finite differences method with applications in reservoir management, closed-conduit hydraulics, free-surface channel and coastal domain flows, surface gravity waves, groundwater movement, and pollutant and sediment transport processes. It focuses on applications rather than lengthy theories or derivations of complex formulas and is supported by a wealth of hands-on numerical examples and computer codes written in MATLAB but available also in BASIC. PowerPoint presentations and learning assignment projects/quizzes, along with learning assessment rubrics, are included. A comprehensive study highlighting the infinite differences method, this book: Covers the fundamentals of flow in pressurized conduits Contains solutions for the classical Hardy Cross pipe network problem Designates the mathematical description of groundwater flow in confined and unconfined aquifers Provides numerical examples for one- and two-dimensional applications including saltwater intrusion Presents examples of transport of pollutants, sediment and air bubbles using Eulerian and Lagrangian solution methodologies Includes information on weighted residuals, the finite elements method, and the boundary integral method Computational Modelling in Hydraulic and Coastal Engineering suits senior-level undergraduates and graduate students as well as practitioners such as coastal and maritime engineers, environmental engineers, civil engineers, computer modellers, and hydro-geologis

Contents:
Foreword. Acknowledgements. Chapter I: Basic Requirements for Optimization. 1.0 Introduction. 1.2 Personnel. 1.3 Management Structure. 1.4 Plant Maintenance. 1.5 Housekeeping. Chapter II: Assessing Plant Performance and Identifying Defects. 2.1 Observing Plant Operation. 2.2 Raw Water Intake 2.3 Raw Water Metering 2.4 Coagulent Handling. 2.5 Flocculation Systems. 2.6 Settling Basins. 2.7 Filters. 2.8 Disinfection. 2.9 Stabilizaion. 2.10 Checklist for Plant Review Chapter III: Water Analysis for Treatment Control. 3.1 Physical Contaminants. 3.2 Biological Variables. 3.3 Chemical Variables and Contamination. 3.4 Laboratory Analysis. Chapter IV: Improving Plants and their Operation. 4.1 Plant Records. 4.2 Raw Water Intake and Flow. 4.3 Rehabilitation of the Chemical Building. 4.4 Pretreatment Units. 4.5 Filter Rehabilitation. 4.6 Filter Operation. 4.7 Stabilization. Chapter V: Determining Design Parameters. 5.1 Introduction to Bench Scale Testing. 5.2 Design and Process Parameters. 5.3 Equipment and Laboratory Space. 5.4 Testing in the Laboratory for Conventional Treatment. 5.5 Testing in the Laboratory for Direct Filtration. 5.6 Sampling for Determinination of Treatment Plant Performance. 5.7 Pilot Plants. 5.8 Treatment Plant as a Pilot Plant. Chapter VI. Disinfection. 6.1 Choice of Process. 6.2 Health Risks of Chlorine. 6.3 Design of Chlorination Facilities. Chapter VII: Optimising and Upgrading Treatment Plants. 7.1 Applying New Technology. 7.2 Optimizing the Treatment Process and Plant Performance. 7.3 Design Information. Chapter VIII: Optimisation and Upgrading of a Plant from 100 ls-1 to 250 ls-1. 8.1 Assessment of Existing Plant. 8.2 Characteristics of the Upgraded Plant. 8.3 Inlet Chamber. 8.4 Initial Mixing of Coagulant and Raw Water. 8.5 Flocculation. 8.6 Distribution of Flocculated Water to Settling Basins. 8.7 Settling Basins. 8.8 Filters. 8.9 Summary. Chapter IX: Optimisation and Upgrading of a Plant from 1m3s-1 to 2.5 m3s-1. 9.1 Assessment of Existing Plant. 9.2 Modifications Required for Upgrading and Optimisation. 9.3 Design of Modifications. Chapter X: Optimisation and Upgrading of a Plant from 20 ls-1 to 50 ls-1 10.1 Assessment of Original Plant. 10.2 Plant performance. 10.3 Upgrading Parameters Determined by Jar Testing. 10.4 Design of Modifications for Upgrading and Optimization. Appendix I Sources of Further Information. Appendix II. Glossary of Terms. Index.

The power sector has undergone a liberalization process both in industrialized and developing countries, involving market regimes, as well as ownership structure. These processes have called for new and innovative concepts, affecting both the operation of existing hydropower plants and transmission facilities, as well as the development and implementation of new projects. At the same time a sharper focus is being placed on environmental considerations. In this context it is important to emphasize the obvious benefits of hydropower as a clean, renewable and sustainable energy source. It is however also relevant to focus on the impact on the local environment during the planning and operation of hydropower plants. New knowledge and methods have been developed that make it possible to mitigate the local undesirable effects of such projects. Development and operation of modern power systems require sophisticated technology. Continuous research and development in this field is therefore crucial to maintaining hydropower as a competitive and environmentally well-accepted form of power generation.

This work describes the key results of the European research project called PROVERBS to develop and implement probability-based methods for the design of monolithic coastal structures and breakwaters subject to sea wave attacks. The issues treated include the hydrodynamic, geotechnical and structural processes involved in the wave-structure-foundation interactions and in the associated failure mechanisms.

A discussion of the fundamental aspects of fluid flow phenomena in a jointed rock mass, as well as various geological (structural) features and their influence on flow deformation characteristics. Various types of laboratory triaxial apparatus used in testing are also highlighted.

A discussion of the fundamental aspects of fluid flow phenomena in a jointed rock mass, as well as various geological (structural) features and their influence on flow deformation characteristics. Various types of laboratory triaxial apparatus used in testing are also highlighted.

"Showcases the beneftis and potential advantages of water hydraulics over oil-based media. Interweaves examples and excercises throughout the text to illustrate critical concepts, with helpful appendices on abbreviations, symbols, conversion factors, and water contaminants, and glossary sections."

This book delivers a wealth of information on changes in flood risk in Europe, and considers causes for change. The temporal coverage is mostly focused on post-1900 events, reflecting the typical availability of data, but some information on earlier flood events is also included.

Among development assistance agencies, the World Bank has led the way in policies to mitigate the impact of large-scale engineering projects on local populations, particularly in the building of dams. Since the 1980s the Bank has implemented guidelines for policies with respect to displacement, social infrastructure and services, environmental effects, resettlement, compensation, and the restoration of income for those affected. Having learned from the failures of past resettlement programs, the Bank has endeavored to function as a responsible and caring agency. This volume builds upon earlier studies and field work to offer a broad look at dam-building projects in six countries and to review the outcomes of Bank policy, learn from experience, and assess outside criticism.
The book covers representative dam projects in India, Thailand, Togo, China, Indonesia, and Brazil. Each project was undertaken after Bank resettlement guidelines had been implemented. The widely ranging results in each country are assessed. In the areas of compensation for acquired land, relocation, infrastructure and services, the contributors note satisfactory levels of improvement or positive trends. Governments are moving towards acceptance of the idea that displaced families should be paid the real value of their lost assets. Relocation processes are now keeping pace with water movement caused by dam building, and health, education, utilities, and roads are better than before the resettlement.
Other results have been less positive. The impact on incomes of those involuntarily resettled has been harsh in some locations. Resettler dissatisfaction has been intense, notably in those countries where the national economies are not experiencing strong growth. The Bank's performance itself has been uneven. There have been lapses in appraisal and monitoring during the projects and insufficient follow-through support for resettlement operations after the completion of loan and credit disbursements.
In addition to its case by case analysis of countries and projects, the book includes detailed lessons and recommendations to strengthen resettlement policy and practice. Involuntary Resettlement will be of interest to economists, sociologists, and professionals working in regional development policy.
Robert Picciotto is director general of Operations Evaluation at the World Bank. Warren van Wicklin is task manager and evaluator at the Operations Evaluation department of the World Bank.

By the year 2000, the world had built more than 45,000 large dams to irrigate crops, generate power, control floods in wet times and store water in dry times. Yet, in the last century, large dams also disrupted the ecology of half the world's rivers, displaced tens of millions of people from their homes and left nations burdened with debt. Their impacts have inevitably generated growing controversy and conflicts. Resolving their role in meeting water and energy needs is vital for the future and illustrates the complex development challenges that face our societies. The Report of the World Commission on Dams: - is the product of an unprecedented global public policy effort to bring governments, the private sector and civil society together in one process - provides the first comprehensive global and independent review of the performance and impacts of dams - presents a new framework for water and energy resources development - develops an agenda of seven strategic priorities with corresponding criteria and guidelines for future decision-making. Challenging our assumptions, the Commission sets before us the hard, rigorous and clear-eyed evidence of exactly why nations decide to build dams and how dams can affect human, plant and animal life, for better or for worse. Dams and Development: A New Framework for Decision-Making is vital reading on the future of dams as well as the changing development context where new voices, choices and options leave little room for a business-as-usual scenario.

"Showcases the beneftis and potential advantages of water hydraulics over oil-based media. Interweaves examples and excercises throughout the text to illustrate critical concepts, with helpful appendices on abbreviations, symbols, conversion factors, and water contaminants, and glossary sections."

This book provides an overview of flood and drought in the Lower Mekong Basin, reviews the characteristics of flood and drought, and details structural and non-structural measures for flood and drought mitigation employed in the basin countries, as well as their flood and drought mitigation capacity. Given its scope, the book offers a valuable resource for researchers and engineers in the field of transboundary rivers, especially those with an interest in the Lower Mekong River.

The creation of river dams and the storage of water have been a strategy for survival for many centuries. Reservoirs have diverse functions, providing irrigation, water supply, storage of water, flood control, navigation and power generation. The silting of a reservoir is an unavoidable process. Although it cannot be halted, silting can be slowed down and controlled by a variety of soil conservation practices and by modifying agricultural practices in the catchment area. Other methods of reducing silting include the placing of certain engineering structures in the river system and the introduction of adequate strategies of reservoir operation. Silting and Desilting of Reservoirs includes aspects such as hydraulics, sediment transport, silting, sediment distribution, calculation and prediction of silting and solutions to reservoir silting.

The continued lack of access to adequate amounts of safe drinking water is one of the primary causes of infant morbidity and mortality worldwide and a serious situation which governments, international agencies and private organizations are striving to alleviate. Barriers to providing safe drinking water for rural areas and small communities that must be overcome include the financing and stability of small systems, their operation, and appropriate, cost-effective technologies to treat and deliver water to consumers. While we know how to technically produce safe drinking water, we are not always able to achieve sustainable safe water supplies for small systems in developed and developing countries. Everyone wants to move rapidly to reach the goal of universal safe drinking water, because safe water is the most fundamental essential element for personal and social health and welfare. Without safe water and a safe environment, sustained personal economic and cultural development is impossible. Often small rural systems are the last in the opportunity line. Safe Drinking Water in Small Systems describes feasible technologies, operating procedures, management, and financing opportunities to alleviate problems faced by small water systems in both developed and developing countries. In addition to widely used traditional technologies this reference presents emerging technologies and non-traditional approaches to water treatment, management, sources of energy, and the delivery of safe water.

This monograph provides an overview of the principles required for a service orientation in the management of irrigation and drainage systems. The material covered is designed to emphasize an area largely neglected in the irrigation and drainage management literature. The dominating philosophy underlying this book is that irrigation and drainage systems must be managed as a service business responsive to the needs and changing requirements of its customers. It is postulated that this service approach to the management of irrigation and drainage systems consitutes a key element of the startegy that is needed to improve the current level of performance of many irrigation and drainage systems worldwide. Enhanced performance of irrigation is a prerequisite if we are to face the enormous challenge of producing greater quantities of food to meet the demand of a growing population. This is particularly the case in an environment with increasing competition for water from industry and urban water users, set against mounting concerns about environmental sustainability.

The text on tidal hydraulic engineering includes discussion of: basic characterstics of tides and tidal propagation; hydrographic surveys in tidal rivers; and design considerations for tidal sluice gates for drainage and fish farms in aquaculture.

Contaminated land is a problem both in the short and long term as it cannot be used without remediation. The investigation and analysis of the problem, along with the legal responsibilities surrounding the issues, continue to present difficulties to those wishing to use or develop a contaminated site. Since publication of the 1st edition, the area has developed rapidly. Building on the success of the first edition, the new edition has been fully updated to take account of advances in the field.

eBook available with sample pages: 0203477626

This book discusses coastal defense measures, which have not improved in the past few decades, and better alternatives. It emphasizes on the existence of stable bays in coastal geomorphology and their use in coastal stabilization. The conventional measures for saving beaches, such as seawalls, groins, offshore breakwaters, and renourishment, are discussed in detail, followed by an alternative known as headland control. Many types of coast, and the respective defense measures, are discussed, especially for eroding beaches downcoast of harbors with long breakwaters. The formation of offshore bars during storms is examined and the design of stable recreational beaches is demonstrated. Practical design problems are discussed in all cases. Many issues requiring attention in coastal engineering are also outlined.

This book discusses coastal defense measures, which have not improved in the past few decades, and better alternatives. It emphasizes on the existence of stable bays in coastal geomorphology and their use in coastal stabilization. The conventional measures for saving beaches, such as seawalls, groins, offshore breakwaters, and renourishment, are discussed in detail, followed by an alternative known as headland control. Many types of coast, and the respective defense measures, are discussed, especially for eroding beaches downcoast of harbors with long breakwaters. The formation of offshore bars during storms is examined and the design of stable recreational beaches is demonstrated. Practical design problems are discussed in all cases. Many issues requiring attention in coastal engineering are also outlined.

Dams As Aid brings together key issues in the aid/environment/development debate. Through her examination of dams, Usher sheds light on wider issues of the political economy of aid.
Detailed analysis of dams and aid case studies are included, particularly on Nordic dams which provide most graphic illustrations, and these detailed case studies are located within a broad comparative and theoretical perspective.

Contaminated land and the methods and legal controls governing its reclamation for subsequent development and use are of great current interest and concern. This volume in the Issues in Environmental Science and Technology series contains seven articles which treat the many aspects of this subject, ranging from risk assessment and risk management, through specific remediation methods and the evolution of government policy and controls, to analysis of the legal and technical features of specific environmental insurance policies. The chemistry of the non-ferrous heavy metals lead, zinc and cadmium is examined in relation to reclamation of superfund sites in the USA alongside a consideration of the role of the Welsh Development Agency in developing strategies for the recovery of derelict and contaminated land. An authoritative treatment of each of the topics is ensured by the particular expertise and distinction of the authors, and as such Contaminated Land and Its Reclamation will make an important contribution to the public debate on these issues. It will be essential reading for all those groups of people directly or indirectly involved, from consultants and their technical advisors, through developers, contractors and landowners, to local authorities and government agencies with responsibility for policy and its implementation in this area.

This book addresses aspects of human factors in engineering and provides a detailed discussion of novel approaches, systems engineering tools, artificial cognitive systems, and intelligent technologies and automation. It presents applications in diverse areas including digital manufacturing, transportation, infrastructure development, and cybersecurity. This book: Merges the engineering perspective with the human factors and social dimension of Computing and artificial intelligence-based technologies. Covers technological development of human factors engineering and the human dimension in applications across all areas of modern society. Relates to human behavior in the context of technology and systems interactions. Discusses the design and the appropriation of 3D printing techniques in the management of an innovative product system. Presents systems engineering tools, user experience methodologies, artificial cognitive systems, intelligent technologies, and automation. The text is for students, professionals, and researchers in the fields of ergonomics, human factors, industrial engineering, and manufacturing engineering.

The mechanisms and behaviour of the scour process is a challenging subject, and one which is expertly dealt with in this informative, illustrated volume. Specifically, this book addresses issues relating to computing and controlling the scour process near hydraulic structures, and pays special attention to the time-dependent character of the scour processes and the predictability of scour relations.
Providing information on the latest developments in scouring, this text is intended for practising hydraulic engineers.