Irrigation and Drainage Engineering by Peter Waller, Muluneh Yitayew

By Peter Waller, Muluneh Yitayew

This textbook focuses in particular at the mixed subject matters of irrigation and drainage engineering. It emphasizes either uncomplicated thoughts and sensible functions of the most recent applied sciences to be had. The layout of irrigation, pumping, and drainage structures utilizing Excel and visible easy for functions courses are defined for either graduate and undergraduate scholars and training engineers. The publication emphasizes environmental safety, economics, and engineering layout strategies. It contains exact chapters on irrigation economics, soils, reference evapotranspiration, crop evapotranspiration, pipe circulate, pumps, open-channel movement, groundwater, middle pivots, turf and panorama, drip, orchards, wheel traces, hand strains, surfaces, greenhouse hydroponics, soil water stream, drainage platforms layout, drainage and wetlands contaminant destiny and delivery. It includes summaries, homework difficulties, and colour pictures. The publication attracts from the fields of fluid mechanics, soil physics, hydrology, soil chemistry, economics, and plant sciences to provide a vast interdisciplinary view of the basic suggestions in irrigation and drainage structures design.

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The sum of present value annual costs and benefits at an 8 % required rate of return is $326/ha. Thus, the project has a profit greater than the required rate of return and is recommended. Customer Relations and Sales From the point of view of many irrigation companies, the most important economic concern is selling irrigation systems or selling the design service for irrigation systems. In order to do this, one must gain the confidence of the farmer. One of the first things a farmer wants to know when considering a new system is the water and power requirement.

Determine the present value of the income from cotton 4 years from now for full water application and a required rate of return of 7 %. (1) Assume no inflation. (2) Assume inflation of 5 % per year in costs and no inflation in the selling price of cotton. 16 19. Calculate the cost of energy to pump water for sprinkler irrigation alfalfa for 100 ha of land with an irrigation system that requires a 30 m pressure head, and a pump that operates at 80 % efficiency. 10/kW-hr. Assume that the sprinkler irrigation system water application efficiency is 75 %.

4 Students act out the following play about a typical meeting between the irrigation engineer and the client (this may be the only irrigation engineering play in history).   6, 400 g pm*70ft ¼ 150 HP 3, 960*0:8 Josephine puts her cup of coffee down and says; “Mr. ” Mr. ” Mr. McGillycutty: “That sounds reasonable. ” During the process of design, it is quite typical for growers to make changes. In fact, many growers will make three or more major changes during the design process. This causes extra work.

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