IS 7113 -2003 Code Book PDF free download

IS 7113 -2003 Code Book PDF free download

This Indian Standard (First Revision) was adopted by the Bureau of Indian Standards, after the draft finalized by the Canals and Cross Drainage Works Sectional Committee had been approved by the Water Resources Division Council. Lining of canals is considered an important feature of irrigation projects which not only minimizes loss of water due to seepage but also helps in achieving consumptive use of water for cultivable land and minimizes risk of water logging due to rise in water table. Further, the water, thus saved, can be usefully employed for the extension and improvement of irrigation facilities. Lining of water courses in the areas irrigated by tube wells assumes special significance as the pumped water supplied is relatively more costly. Further, lining of canals permits the adoption of high velocities resulting in savings in the cross-sectional areas, the cost of excavation and masonry works, which may in certain cases offset completely the extra cost of lining. Also, the lining ensures stability of channels sections thereby reducing the maintenance cost. Due to comparative flatter bed slope which can be provided in lined canals, command or the cultural command area would improve. The benefit that accrue from lining of canals generally justify the initial capital cost and because of this there is now a better appreciation’ of the need for lining of canals. Judicious selection of serviceable and economical lining at the first instance and subsequently proper execution of the work while laying the lining results in achieving considerable overall economy in the project . Soil-cement lining is one of the cheaper types of canal lining which has been used successfully in other countries. It’s use as an economic water-proof membrane is possible where soil characteristics are favorable to stabilization. While the lining will minimize absorption losses and give reduced section of the canal, it can suffer from damage from cattle trespass, weathering action and low resistance to sub grade pressures occurring due to sudden closures of the canal. In many areas local soils mixed with water and cement maybe used to construct adequate soil-cement linings. Soil-cement mixtures are relatively dry mixtures of soil, cement and water, compacted to a maximum density. The suitability of the soil and the proportions of the mix to be used shall be determined by laboratory tests before any work is undertaken. This standard was first published in 1973. This revision of the standard has been taken up to incorporate the latest technological changes in this field as well as to account for the experiences gained during the last four decades. There is no  1 S 0 Standard on the subject. This standard has been prepared based on indigenous data/practices prevalent in the field in India. The composition of the Committee responsible for the formulation of this standard is given in Annex A.

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