IS 4464 : 2024 Presentation of Drilling Information and Core Description in Geotechnical Investigation - Code of Practice
1 SCOPE
1.1 The standard gives proforma for keeping drill core records of exploratory drilling and for presenting drilling information relating to geotechnical investigations for river valley projects.
1.2 The standard covers general guidance on core description and presenting the details in given proforma.
2 REFERENCES
The standards listed in Annex A contain provisions, which through reference in this text constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent edition of these standards.
| IS No. | Title |
| IS 2131 : 1981 | Method for standard penetration test for soils |
| IS 5313 : 2020 | Guide for core drilling observations (second revision) |
| IS 11315 | Methods for quantitative description of discontinuities in rock masses |
| (Part 1) : 2023 | Orientation |
| (Part 2) : 2023 | Spacing |
| (Part 3) : 2023 | Persistence |
| (Part 4) : 2023 | Roughness |
| (Part 5) : 2023 | Wall strength |
| (Part 6) : 2023 | Aperture |
| (Part 7) : 2023 | Filling |
| (Part 8) : 2023 | Seepage |
| (Part 9) : 2023 | Number of sets |
| (Part 10) : 2023 | Block size |
| (Part 11) : 2023 | Core recovery and rock quality designation |
| (Part 12) : 2023 | Drill core study |
| IS 13365 | Quantitative classification system of rock mass - Guidelines: |
| (Part 1) : 1998 | Rmr for predicting of engineering properties |
| (Part 2) : 2019 | Rock mass quality for prediction of support pressure, support system and engineering properties in underground openings (first revision) |
| (Part 3) : 1997 | Determination of slope mass rating |
| (Part 4) : 2014 | Geological strength index (GSI) |