2911_4-new-2013.pdf - IS 2911(Part 4 2013 Hkkjrh ekud ikby uhao dh fMT kkbu vkSj fuekZ.k Hkkx 4 jhfr lafgrk ikbyksa dk Hkkj ijhcfw_k.k(nwljk

2911_4-new-2013.pdf - IS 2911(Part 4 2013 Hkkjrh ekud ikby...

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© BIS 2013 B U R E A U O F I N D I A N S T A N D A R D S MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELHI 110002 December 2013 Price Group 7 IS 2911 (Part 4) : 2013 Hkkjrh; ekud ikby uhao dh fMT+kkbu vkSj fuekZ.k jhfr lafgrk Hkkx Hkkx Hkkx Hkkx 4 ikbyksa dk Hkkj ijh{k.k ikbyksa dk Hkkj ijh{k.k ikbyksa dk Hkkj ijh{k.k ikbyksa dk Hkkj ijh{k.k (nwljk iqujh{k.k) Indian Standard DESIGN AND CONSTRUCTION OF PILE FOUNDATIONS — CODE OF PRACTICE PART 4 LOAD TEST ON PILES ( Second Revision ) ICS 91.100.30:93.020
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Soil and Foundation Engineering Sectional Committee, CED 43 FOREWORD This Indian Standard (Part 4) (Second Revision) was adopted by the Bureau of Indian Standards, after the draft finalized by the Soil and Foundation Engineering Sectional Committee had been approved by the Civil Engineering Division Council. Pile load test is the most direct method for determining the safe loads on piles including its structural capacity with respect to soil/rock in which it is installed. It is considered more reliable on account of its being in-situ test than the capacities computed by other methods, such as static formula, dynamic formulae and penetration test data. There are widely varying practices followed for load tests on piles. Particularly, the difficulties regarding the establishment of an acceptable criterion, for determining the ultimate and safe bearing capacity of piles, and predicting the pile group behaviour from the test data obtained from individual load test on single piles cannot be under estimated as the factors affecting are many. However, an attempt is made to bring out a unified approach to the various aspects of load test on piles. This standard (Part 4) was first published in 1979 to cover load test on piles. The other parts of this standard are as follows: (Part 1) Concrete piles (Part 2) Timber piles (Part 3) Under-reamed piles The standard was first revised in 1985 to give more details in regard to the rate of loading and unloading and the details of the situations when the different types of tests are conducted. Later Amendment No. 1 to the standard was issued in May 1989 modifying the test load for routine test of piles. It has now been felt that the provisions regarding the load test of piles should be further revised to take into account the recent developments in this field. This revision has been brought out to incorporate these developments. In this revision following major modifications have been incorporated: a) Definitions of various terms have been modified as per the prevailing engineering practice; b) The frequency for initial test has been modified; c) The test load for initial test pile has been added; and d) In case of both vertical load test and pull-out test, separate criteria for determining safe load of piles have been specified on the basis of diameter of piles.
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