Side weirs are widely used to divert or discharge flows from reservoirs, rivers, artificial channels and sewers. The hydraulic behaviour of this type of weir is complex and difficult to predict accurately using simple methods and the diversity of applictions of side weirs has the potential to complicate guidance. This manual covers the fundamental hydraulic principles and discusses the practical design issues separately for each main strcuture type.
A labyrinth weir is a series of duckbill spillways for controlling the flow of water over a dam or channel. This slim volume compares the crest shapes used on weirs, identifies considerations for designing downstream chutes and dealing with sedimentation, explores general guidelines for parameter se
Labyrinth spillways are almost as old as dam engineering. In spite of the fact that they appear as a very good technical-economical compromise, only 0.1% of large dams are equipped with such weirs. The main reason for this is that traditional labyrinth weirs usually cannot be installed on top of concrete gravity dams as they require a large foundat
Environmental and engineering aspects are both involved in the drainage of rainwater and wastewater from areas of human development. Urban Drainage deals comprehensively not only with the design of new systems, but also the analysis and upgrading of existing infrastructure, and the environmental issues involved. Each chapter contains a descriptive overview of the complex issues involved, the basic engineering principles, and analysis for each topic. Extensive examples are used to support and demonstrate the key issues explained in the text. Urban Drainage is an essential text for undergraduates and postgraduate students, lecturers and researchers in water engineering, environmental engineering, public health engineering and engineering hydrology. It is a useful reference for drainage design and operation engineers in the water industry and local authorities, and for consulting engineers. It will also be of interest to students, researchers and practitioners in environmental science, technology, policy and planning, geography and health studies.
The book is a collection of extended papers which have been selected for presentation during the SIMHYDRO 2012 conference held in Sophia Antipolis in September 2012. The papers present the state of the art numerical simulation in domains such as (1) New trends in modelling for marine, river & urban hydraulics; (2) Stakeholders & practitioners of simulation; (3) 3D CFD & applications. All papers have been peer reviewed and by scientific committee members with report about quality, content and originality. The target audience for this book includes scientists, engineers and practitioners involved in the field of numerical modelling in the water sector: flood management, natural resources preservation, hydraulic machineries, and innovation in numerical methods, 3D developments and applications.
Hydraulic engineering of dams and their appurtenant structures counts among the essential tasks to successfully design safe water-retaining reservoirs for hydroelectric power generation, flood retention, and irrigation and water supply demands. In view of climate change, especially dams and reservoirs, among other water infrastructure, will and have to play an even more important role than in the past as part of necessary mitigation and adaptation measures to satisfy vital needs in water supply, renewable energy and food worldwide as expressed in the Sustainable Development Goals of the United Nations. This book deals with the major hydraulic aspects of dam engineering considering recent developments in research and construction, namely overflow, conveyance and dissipations structures of spillways, river diversion facilities during construction, bottom and low-level outlets as well as intake structures. Furthermore, the book covers reservoir sedimentation, impulse waves and dambreak waves, which are relevant topics in view of sustainable and safe operation of reservoirs. The book is richly illustrated with photographs, highlighting the various appurtenant structures of dams addressed in the book chapters, as well as figures and diagrams showing important relations among the governing parameters of a certain phenomenon. An extensive literature review along with an updated bibliography complete this book.
This new edition of a well-established textbook covers the environmental and engineering aspects of the management of rainwater and wastewater in areas of human development. Urban Drainage deals comprehensively not only with the design of new systems, but also the analysis and upgrading of existing infrastructure. Keeping its balance of principles, practice and research, this new edition has significant new material on modelling, resilience, smart systems, and the global and local context. The two new authors bring further research and practice-based experience. This is an essential text for undergraduate and graduate students, lecturers and researchers in water engineering, environmental engineering, public health engineering, engineering hydrology, and related non-engineering disciplines. It also serves as a dependable reference for drainage engineers in water service providers, local authorities, and for consulting engineers. Extensive examples are used to support and demonstrate the key issues throughout the text.
About the book: This book is intended for undergraduate (B.E/B. Tech) students of civil engineering and post graduate (M.E/M.Tech) students of environmental science and engineering, and beginners in design of wastewater treatment plants. Also, it will be useful to the established designers of wastewater treatment plants, decision makers of municipal corporations, field executives and pollution control board authorities. Wastewater treatment is a vast and interdisciplinary subject. Wastewater treatment plants are very complex hydro-technical facilities. The concept of planning and design of waste water treatment plants through concise book should be easily understandable to students, beginners in process and hydraulic design of wastewater treatment plants. Once the concepts are understood and reasonably enough confidence of process and hydraulic design of wastewater treatment process is gained then one can acquire specific details of design from different sources and can handle even planning and design of large capacity wastewater/sewage plants to different site conditions and layouts. The author felt to attempt and write a book-cum-design guide covering theory of the subject which is normally required to write examinations. Much stress is given on process and hydraulic design, treatment plant hydraulics, fundamentals of hydraulics and its application in wastewater treatment plant design, and hydraulic profiling of plants. The basic hydraulic concepts are same whether they are used for design of elements of sewage treatment plant or industrial waste water treatment. A pilot project on design of 125 MLD capacity sewage treatment plant has been exercised in order to integrate the process design, hydraulic concepts, control points in plant and hydraulics of various units/components that must operate compatibly to provide the desired flow profile. The recommendations of various Indian standards and manual on Sewerage and Sewage Treatment of CPHEO under Ministry of Urban Development, New Delhi have been followed. The SI units of measurement are used throughout the book and in design calculations. The book contain about 100 diagrams, tables, photos and three large diagrams of sewage treatment plant’s layout, hydraulic profiling of main flow path and return flow. Book features: · Provides enough subject theory and design of wastewater treatment plants in detail. · Theory and design considerations of Activated Sludge Process(ASP) and its modifications, advanced wastewater biological treatment processes like- Sequencing Batch Reactor(SBR), Moving Bed Bio-film Reactor(MBBR), Rotating Biological Contactor(RBC), Up-flow Anaerobic Sludge Blanket (UASB) process has been covered in detail. · It includes plant siting and layout development, support facilities, basics of hydraulics, plant hydraulics and pump hydraulics in depth which is required for hydraulic design and profiling of wastewater treatment plants. · A complete process and hydraulic design, and hydraulic profiling of 125 MLD sewage treatment plant. · Process design of Sequencing Batch Reactor (SBR) process. · Appendices: Tables and Nomograms, standard sizes of pipes of various materials, gates, pumps, aerators, air blowers, and table of constants required for hydraulic calculations. Recommendation Useful to:- (a) Students of M. Tech in Environmental Engg (b) Students of B. Tech (Civil Engg) (c) Officers of Municipal corporations, and pollution control boards central/states (d) Beginner in design of wastewater treatment plants (e) Design department of wastewater treatment industries (f) Consultants (g) Advisors of urban development departments
Although hundreds of stilling basins and energydissipating devices have been designed in conjunction with spillways, outlet works, and canal structures, it is often necessary to make model studies of individual structures to be certain that these will operate as anticipated. The reason for these repetitive tests is that a factor of uncertainty exists regarding the overall performance characteristics of energy dissipators. The many laboratory studies made on individual structures over a period of years have been made by different personnel, for different groups of designers, each structure having different allowable design limitations. Since no two structures were exactly alike, attempts to generalize the assembled data resulted in sketchy and, at times, inconsistent results having only vague connecting links. Extensive library research into the works of others revealed the fact that the necessary correlation factors are nonexistent. To fill the need for up-to-date hydraulic design information on stilling basins and energy dissipators, a research program on this general subject was begun with a study of the hydraulic jump, observing all phases as it occurs in open channel flow. With a broader understanding of this phenomenon it was then possible to proceed to the more practical aspects of stilling basin design. This monograph generalizes the design of stilling basins, energy dissipators of several kinds and associated appurtenances. General design rules are presented so that the necessary dimensions for a particular structure may be easily and quickly determined, and the selected values checked by others without the need for exceptional judgment or extensive previous experience. Proper use of the material in this monograph will eliminate the need for hydraulic model tests on many individual structures, particularly the smaller ones. Designs of structures obtained by following the recommendations presented here will be conservative in that they will provide a desirable factor of safety. However, model studies will still prove beneficial to reduce structure sizes further, to account for nonsymmetrical conditions of approach or getaway, or to evaluate other unusual conditions not described herein.
