IS 6403 -1981 Code Book PDF free download

This Indian Standard ( First Revision ) was adopted by the Indian Standards Institution on 30 January 1981, after the draft finalized by the Foundation Engineering Sectional Committee had been approved by the Civil Engineering Division Council. The bearing capacity of foundations is needed for dimensionless the foundation for any structure. Several methods are available for the determination of bearing capacity of shallow foundations anti this standard gives some of the methods which are commonly used for the purpose. Comparison of the results shows that when each of the various methods is applied to different problems no one method consistently gives higher or lower values of allowable bearing pressure. The designer must therefore regard the methods as aids to design which cannot replace the critical role of engineering judgement. This standard was first published in 1971. The principal modifications ‘made in this revision are: (a) keeping its terminology in line with that of other related Indian Standards, (b) giving’ generalized equations for calculation of ultimate bearing capacity, (c) including cone penetration methods and (d) deleting adjustment for fine sand and silt.  For the purpose of <riding whether a particular requirement of this dastard 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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