IS 4995 -1974 Code Book PDF free download
This Indian Standard ( Part I ) ( First Revision ) was adopted by the Indian Standards Institution on 9 December 1974, after the draft finalized by the Criteria for Design of Structures Sectional Committee had been approved by the Civil Engineering Division Council. Storage structures like bins (silos and bunkers ) for storing different materials are one among the important structures coming up in any industrial or organized storage complex. The necessity to store and contain materials like coke, coal, ores in the various steel plants and other industrial establishments cannot be overemphasized. In cement factories as well as in construction projects, cement is stored in large silos, On the agricultural front the food grain storage structures play a vital role in ensuring the supply of food grains at all times of the year. Bulk storage of materials in bins has certain advantages over other forms of storage. Therefore, the necessity to formulate standard criteria Tar design of such structures has been felt and this standard is aimed at giving the necessary guidelines to arrive at the structural design of reinforced concrete bins for the storage of various materials of different properties and characteristics. This standard published in 1968 covered the requirements of the structural design for food grain storage bins ( silos ). It has been felt that instead of bringing out one separate standard to cover the requirements of all materials other than food grains, it would he judicious to cover the subject under one standard in which provisions for bins storing different materials could be dealt with adequately. Therefore, the first revision of this standard had been taken up to cover the requirements of storage bins for all materials including food grains For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with IS : 2-1960*. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.
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