Irrigation Systems

Irrigation Systems

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Of all the confrontations man has engineered with nature, irrigation systems have had the most widespread and far-reaching impact on the natural environment. Over a quarter of a billion hectares of the planet are irrigated and entire countries depend on irrigation for their survival and existence. Considering the importance of irrigation schemes, it is unfortunate that until recently the technology and principles of design applied to their construction has hardly changed in 4, 000 years. Modern thinking on irrigation engineering has benefited from a cross-fertilization of ideas from many other fields including social sciences, control theory, political economics and agriculture. However, these influences have been largely ignored by irrigation engineers.Drawing on almost 40 years of experience of irrigation in the developing world, Laycock introduces new ideas on the design of irrigation systems and combines important issues from the disciplines of social conflict, management, and political thinking.coordinates in mm Size 1144 x 686 size 920 x 610 size 760 x 530 size 700 x 480 size 640 x 460 size 540 x 305 ... There is no theoretical limit, but if manual labour only is available, then the maximum weight for easy handling is limited to about 200 kg. ... Finished cube strength was 350 kg/cmZ, above the 300 specified.

Title:Irrigation Systems
Author: Adrian Laycock
Publisher:CABI - 2007-01-01

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