IS 4996 -1984 Code Book PDF free download
This Indian Standard ( First Revision ) was adopted by the Indian Standards Institution on 30 April 1984, after the draft finalized by the Cement and Concrete Sectional Committee had been approved by the Civil Engineering Division Council. One of the most durable and efficient post-and-wire fence is constructed with the help of concrete fence posts. Properly made reinforced or prepossessed concrete fence posts have a long life, require very little or no maintenance and give a neat appearance to the fence. This standard covering reinforced concrete fence posts is intended to serve as a guide in the manufacture, selection, testing and use of suitable type of fence posts. This standard was first published in 1968. The present revision has been prepared with a view to incorporating the modifications found necessary consequent to the revision of various related standards since its first publication so as to bring it in line with the present practices in the field in this country. In this revision deformed steel bars conforming to IS : 1139-1966* and IS : 1786-19797 h ave been allowed in the manufacture of reinforced concrete fence posts. In addition to significant changes in some figures, the requirement of minimum concrete cover to reinforcement and minimum strength of concrete for handling of units have also been modified. 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-I 960:. 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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