IS 5758 -1984 Code Book PDF free download
This Indian Standard ( First Revision ) was adopted by the Indian Standards Institution on 12 March 1984, after the draft finalized by the Cement and Concrete Sectional Committee had been approved by the Civil Engineering Division Council. With the development of precast concrete industry, the precast concrete berks, channels, edgings, quadrants and gutter aprons will also gain popularity in this country due to their ease of manufacture and architectural and other considerations. The different sections shown in this standard arc“, as far as possible, a fair representation of the types which will be useful. The test for transverse strength covered in this standard gives the relationship between the test load to be supported and the age of concrete at which the load shall be applied- This is to ensure that this part of the standard shall be complied with by virtue of the use of a suitably low enticement ratio and not because the test specimens have been left to mature for a long time. While they may sustain the test load after a lengthy maturing period, they may still have been made with such a high water/cement ratio that damage is likely to occur subsequently from the effects of low temperatures. NOTE 1 – The provisions of this standard are based upon the assumption that to comply therewith the berks, channels, etc, have been manufactured of cement of the quality specified and suitable clean properly graded aggregate with sufficient clean water to provide for effective hydration, mixing and consolidation, and that the berks, channels. ct, have been properly matured by being stacked for at least 28 dais or cured in some other manner proved to the satisfaction of the engineer to give equivalent results. 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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