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IS CODE 4984 PDF

Thursday, June 20, 2019


IS (): high density polyethylene pipes for potable reference may be made to IS (Part 11): Code of practice for plastic pipe work for. IS high density polyethylene pipes for potable water supplies. byBureau of Indian (For more information: 12 Tables of Code) Name of. IS - LR - Download as PDF File .pdf) or read online. IS -


Is Code 4984 Pdf

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IS - Free download as PDF File .pdf), Text File .txt) or read online for free. (Part 11): Code of practice for plastic pipe work for potable water. IS (): high density polyethylene pipes for potable reference may be made to IS ( Part 11): Code of practice for plastic pipe work for. IS high density polyethylene. DOC: STI//7. June Page 1 of केन्‍द्रीय मुह् विभ्ग - III. ि भ ्संद भ- सीए डी -III/ IS 03 07

The details of cottditiotts ttttder which a licettce for the use of the Stattdard Mark may be grattted to manufacturers or producerstttay be obtaitted frottt the Bureau of Indian Standards.

All the pipes in each of the sample size shall be tested for compliattce in the requiretttents for hydraulic characteristics.

I , reversion 8. The lot shall be cottsidered to have tttet the requiretttettts of these tests, if ttotte of satttples tested fails.

However, occasional rise itt tetttperature as in sutttttter seasott with rottcurrettt rorrespottdittg reductiott itt tetttperature durittg eight has uo deleterious effects ou the life and workittg pressure of the.

With the advattcetttettt in technology, ttatural uttpigtttettted resin duly stabilised with anti-oxidants see 5. No ttegative tolerances are allowed.

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The basis for the values spccilied is: IS : A NOTE onsidering operational problems, maximum wall thickness of pipes are considered around 63 mm. The pipe shall rctttaitt frcc to tttove itt lottgihtdittal direction.

It shall bc thett put in a water bath at the test tetnpcralure of 80C permissible deviatiott 21C and kept in the bath for tninitnum otte hour to adjust the tetnperabre.

The pressure with a pertnissible drviatiott of The test pressure ,v shall be calculated as follows tiottt the tnittitnutn dimensions givett in the Table 3 or 4 or 5, as the case tnay be attd the correspottdittg ittduced stress values given itt Table 6. The test showittg failure witltitt a distattct equivalent to the length of end cap frottt the ettd shall be disregarded attd the test repeated.

Theglass plate with the test pieces shall then be placed in the oven heated to test temperature aud capable of maintaining coutiuuous forced air circulatioa. Ia such cases, the clitirr circumference of approximately mm loug section of pipe shall be divided into pieces measuriug approximately mm square.

The direction of the pipe axis shall be marked ou the pieces. The manufacturer or the supplier may be asked to improve the design and resubmit the product for type approval. For ascertaining conformity of the lot to the requirements of this specification, samples shall be selected in accordance with the provisions as mentioned under 9.

For guidance and use of random number tables, IS : may be referred. In the absence of a random number table the following procedure may be adopted.

Every rth pipe so counted shall be drawn so as to constitute the required sample size. A pipe failing to satisfy any of these requirements shall be considered as defective. The lot shall be deemed to have satisfied these requirements, if the number of defectives found in the first sample are less than or equal to the corresponding acceptance number given in col 5 of Table 7.

The lot shall be deemed not to have met these requirements if the number of defectives found in the first sample is greater than or equal to the corresponding rejection numbers given in col 6 of Table 7.

If, however, the number of defectives found in the first sample lies between the corresponding acceptance and rejection numbers given in col 5 and 6 of Table 7, the second sample of the size given in col 3 of Table 7 Scale of Sampling for Visual and Dimensional Requirements Clauses 9.

Public Safety Standards of the Republic of India

The lot shall be considered to have satisfied these requirements, if the number of defectives found in the cumulative sample is less than or equal to the corresponding acceptance number given in col 5 of Table 7; otherwise not. All the pipes in each of the sample size shall be tested for compliance in the requirements for hydraulic characteristics 8.

The lot shall be considered to have met the requirements of these tests, if none of samples tested fails. The details of conditions under which a licence for the use of the Standard Mark may be granted to manufacturers or producers may be obtained from the Bureau of Indian Standards. The material of pipe thus produced shall conform to requirements of 5.

IS 4984: high density polyethylene pipes for potable water supplies

No negative tolerances are allowed. The basis for the values specified is: a For nominal outside diameters 75, the tolerance equals 0.

In case of variation in water temperature, the working pressure needs to be modified as per Fig. However, occasional rise in temperature as in summer season with concurrent corresponding reduction in temperature during night has no IS : deleterious effects on the life and working pressure of the pipes.

NOTE Considering operational problems, maximum wall thickness of pipes are considered around 63 mm. The pipe shall remain free to move in longitudinal direction.

It shall be then put in a water bath at the test temperature of 80C permissible deviation 1C and kept in the bath for minimum one hour to adjust the temperature. The pressure with a permissible deviation of 2. The test pressure p shall be calculated as follows from the minimum dimensions given in the Table 3 or 4 or 5, as the case may be and the corresponding induced stress values given in Table 6.

In such cases, the entire circumference of approximately mm long section of pipe shall be divided into pieces measuring approximately mm square.

The direction of the pipe axis shall be marked on the pieces. All pieces are required to be tested. A mark shall be scribed on the external surface approximately 50 mm from each end of the test pieces in the axial direction of pipe in the case, of complete section of pipe, the mark shall be scribed around the whole circumference.The wall thickness shall be measured by a dial vernier or ball ended micrometer. Flag for inappropriate content.

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The pipe shall remain free to move in longitudinal direction. The distance between the two marks, lo reference length , shall be approximately mm and shall be measured to the nearest 0. If, however, the number of defectives found in the first sample lies between the corresponding acceptance and rejection numbers given in col 5 and 6 of Table 7, the second sample of the size given in col 3 of Table 7 Scale of Sampling for Visual and Dimensional Requirements Clauses 9.

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