IS 3873 -1993 Code Book PDF free download

IS 3873 -1993 Code Book PDF free download


This Indian Standard was adopted by the Bureau of Indian Standards, after the draft finalized by the Irrigation Canals and Canal Linings Sectional Committee had been approved by the River Valley Division Council. This standard was first published in 1966 and subsequently revised in 1978. This second revision has been made in view of the experience gained during the course of these years in use of this standard. In this revision the scope of standard has been enlarged so as to cover precast cement concrete tiles/stone slabs. The text has been updated by making reference to latest version of standards. Lining of canals is considered an important feature of irrigation projects as it not only minimizes the loss of water due to seepage but also results in achieving considerable economy in the use of cultivable land which would otherwise be prone to 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 area irrigated by tube wells assumes special significance as the pumped water supply is relatively more costly. Lining of canals permits the adoption of high velocities resulting in proportionate savings of the cross-sectional areas of the channel and land width required with corresponding saving in the cost of excavation and masonry work, which may in certain cases offset completely the extra cost of lining. Also, the lining ensures stability of channel sections thereby reducing the maintenance cost. Lining of canals in erodible soils helps in maintaining regime. Lining prevents rodents and other burrowing animals from digging holes in the embankments and causing canal breaches. The benefits that accrue from lining canals generally justify the initial capital cost and because of this there is now better appreciation of the need for lining on canals. Judicious selection of serviceable and economical lining at the first instance and subsequently proper execution of the work while laying the canal lining reflects considerably in achieving overall economy in the project. Guidance with regard to the selection of canal lining for any particular canal is given in IS 10430 : 1982 ‘Criteria for design of lined canals and guidelines for Selection of type of lining’. However, having once decided to adopt lining in any particular canal, this standard would give necessary guidance in laying cement concrete ( cast in-suit and precast ) and stone slab lining



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