Document Details |
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| Name of Department/Committee : | CED 43 | ||||
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| Document Number : | CED 43 ( 24470) | ||||
| Document Title [English] : | Design and Construction for Ground Improvement — Code of Practice : Part 1 Stone Columns | ||||
| Document Title [Hindi] : | भूमि सुधार के लिए डिजाइन और संरचना — रीति संहिता : भाग 1 पाषाण स्तंभ | ||||
| Document Type : | Revision | ||||
| Language : | English | ||||
| Priority : | 3 | ||||
| ICS Code : | 93.020 | ||||
| Date of Project Approval : | 09-11-2023 | ||||
| Standards to be Revised : |
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| Standards to be Superseded : | |||||
Classification Details |
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| Group : | Civil Engineering Design and Construction |
| Sub Group : | Foundation, underground structures, soil and rock mechanics |
| Sub Sub Group : | Foundation Engineering |
| Aspects : | Code of Practice |
| Risk : | None |
| Certification : | None |
| Short Commom Man's Title : | Ground improvement using stone column |
| ITCHS Code : | |
| Ministry : |
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| Sustainable development Goals : |
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| Degree of Equivalence : | Indigenous |
| Identical/Equivalent Standards : | |
| Organization Type: | |
| Sl.No. | Synosis Points | |
| 1 | It covers the design methodology as well as the construction techniques for installation of stone columns. The scope is limited to the computation of allowable loads and settlements for wide spread loads. Stone columns may be adopted for improving the engineering properties of the soils containing fines more than 15 percent passing through 0.075 mm sieve. This ground improvement technique is used to, a) improve bearing capacity; b) improve stability of slopes; c) reduce settlements; d) accelerate consolidation process in saturated conditions; and e) mitigate liquefaction potential, if any. | |
| 2 | In this revision of the standard, the following major modifications have been made: a) Definitions of various terms have been modified as per the prevailing engineering practice. b) Quality control and test requirements for prefabricated vertical drains have been incorporated. c) Smear effect has been included in design procedure. d) The factor of safety against possible slip or bearing failure has been reduced to 1.2 to be consistent with other Indian standards. e) Vacuum consolidation method has been included. f) Instrumentation and monitoring has been included. | |
Timeline Details |
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Stages |
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| Sl. No. |
Stage | Date of Occurence | Remarks | Circulated to | Files |
| 1 | Generation of Document Number | 09-11-2023 | ------- | ||
| 2 | P-Draft Waived | 22-12-2023 | ------- | ||
| 3 | WC Draft | 23-12-2023 | Duration : 40 Days Submitted for HOD approval |
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| 4 | WC Draft | 23-12-2023 | WC approved by HOD |
CEDC CED 48, CED 39, | ------- |
| 5 | WC Draft | 23-12-2023 | Duration : 40 Days Submitted for HOD approval |
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| 6 | WC Draft | 24-12-2023 | WC approved by HOD |
CEDC CED 48, CED 39, | ------- |