A Handbook of Land Drainage, Principally Based Upon the Requirements of the Syllabus Issued by the Surveyors' Institution
A Handbook of Land Drainage, Principally Based Upon the Requirements of the Syllabus Issued by the Surveyors' Institution

Author: G. S. Mitchell

Publisher: Hardpress Publishing

Published: 2012-01

Total Pages: 142

ISBN-13: 9781290026420

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Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.

Modern Land Drainage
Modern Land Drainage

Author: Willem Vlotman

Publisher: CRC Press

Published: 2020-05-07

Total Pages: 509

ISBN-13: 1000042200

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Modern Land Drainage 2nd edition is a fully revised and updated edition of the 2004 edition. Modern Land Drainage describes traditional drainage formulas (Hooghoudt, Kirkham, Donnan, Ernst, Glover-Dumm) for rainfed agriculture in the humid temperature zone. Significant parts are devoted to drainage for salinity control of irrigated land in (semi-) arid zones, and to drainage of rice land in the humid tropics. Institutional, management and maintenance aspects are extensively covered, as well as the mitigation of adverse impacts of drainage interventions on the environment. The latest computer applications for drainage design in the context of integrated water management are described (DRAINMOD, HEC, SWAP, etc.). Field surveys are executed by governments, with the aid of consultants, but rarely are the end stakeholders (i.e., farmers and general public) involved from inception to planning to execution of a drainage system. Yet, during the Operation, Management and Maintenance (OMM) phase of a water management system, they are expected to takeover, run, bear and be responsible for the costs of OMM. The book describes successful methodologies and processes to be followed for engagement of stakeholders at all levels, from government to farm, from minister to farmer, and, from beginning to end. The book covers all aspects needed for sustainable drainage. The latest survey methodologies with satellites and drones are suggested to assess cause and effect. Waterlogging and salinity are the effect of something caused most likely upstream of the drainage problem location. Hence treating the cause may be more cost-effective. Triple Bottom Line (social, environmental and financial considerations) and the water-food-energy nexus are an integral part of the drainage design process. Controlled drainage, i.e. the balance of removal and conservation of drainage water and minimising solute transport as low as reasonably achievable (ALARA principle) is extensively described. This work is intended for use both as a university level textbook and as a professional handbook; it is of particular value to professionals engaged in drainage development in the context of integrated water resources and river basin management, civil and agricultural engineers, government officials, university students and libraries.

Text-Book of Land Drainage
Text-Book of Land Drainage

Author: Joseph Alexander Jeffery

Publisher: Theclassics.Us

Published: 2013-09

Total Pages: 58

ISBN-13: 9781230462585

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1916 edition. Excerpt: ...drain, as described in paragraph 146, excepting that the laterals discharge at their lower terminal into the main or sub-main, and not at an outlet. It is most convenient to drive the grade stakes at intervals of 50 feet, for reasons given in paragraph 147, and for the further reason that a greater distance than 50 feet increases the difficulty in using the boning line. 154. The angle of approach for laterals.--It is common, in systems like that illustrated in Fig. 25, to locate the laterals so that their upper angle to the main shall be less than 90 degrees. If, however, it should be deemed advisable to run the lateral at right angles to the main, as shown in Fig. 26, then they should be turned slightly as they approach the main so as to enter at an angle of less than 90 degrees, the reason being that if the water from the lateral is discharged into the main at an angle of 90 degrees, it is likely to interfere with the movements of the water and also with the ready movement of the silt which may be carried by the waters of the main. Another factor, however, that must enter into the angle of approach is the position and shape of the area requiring drainage. (See Figs. 28 and 29.) The angle of approach must be determined by the needs of the land and economy i in labor. The angle of discharge should be governed by the suggestions above. 155. The location of the upper end of mains and laterals.--It is not necessary to carry the end of either main or lateral to the very edge of the area to be drained. The water in the soil will move toward the end as readily as it will toward any other point in the drain. The line of equal influence of the drain at this point is the arc of a circle whose center is the end of the drain. 156. Measurements.--Due...

Land Drainage: Principles, Methods and Applications
Land Drainage: Principles, Methods and Applications

Author: Bhattacharya, A.K. & Michael, A.M.

Publisher: Vikas Publishing House

Published: 2006

Total Pages: 767

ISBN-13: 812592776X

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Land Drainage – Principles, Methods and Applications presents the latest information, concepts and technology for ensuring sustainable agricultural production and environmental management by adopting land drainage measures. It focuses on a subject, central to the sustainability of irrigated agriculture. The authors’ considerable field work experience and strong grip on the subject are pivotal in conceptualizing this book. This book provides an explicit description of the subject for students as well as the practicing engineers in this area. A logical sequence is followed in the presentation of chapters, beginning with the occurrence of drainage problems, their causes, remedies, design and execution of drainage systems and the benefits of drainage. The book can claim to be the only comprehensive title on the subject in India. SALIENT FEATURES 1. Follows an application-centric approach based on mathematical and statistical concepts 2. Provides a global scenario of drainage by studying different drainage models 3. Discusses drainage in the Indian context 4. Text is supported by statistical inputs and well illustrated examples 5. Includes self-assessment questions with answers and a number of solved and unsolved problems 6. Includes case studies of Drainage and Salt Management

A Handbook of Land Drainage, Principally Based Upon the Requirements of the Syllabus Issued by the Surveyors' Institution
A Handbook of Land Drainage, Principally Based Upon the Requirements of the Syllabus Issued by the Surveyors' Institution

Author: G S Mitchell

Publisher: Palala Press

Published: 2016-05-02

Total Pages: 138

ISBN-13: 9781355150367

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