BS EN ISO 22476-1:2023 – TC
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Tracked Changes. Geotechnical investigation and testing. Field testing – Electrical cone and piezocone penetration test
| Published By | Publication Date | Number of Pages |
| BSI | 2023 | 173 |
This document establishes equipment, procedural and reporting requirements and recommendations on cone and piezocone penetration tests. NOTE This document fulfils the requirements for cone and piezocone penetration tests as part of geotechnical investigation and testing according to the EN 1997 series. This document specifies the following features: a) type of cone penetration test; b) cone penetrometer class according to Table 2; c) test categories according to Table 3; d) penetration length or penetration depth; e) elevation of the ground surface or the underwater ground surface at the location of the cone penetration test with reference to a datum; f) location of the cone penetration test relative to a reproducible fixed location reference point; g) pore pressure dissipation tests. This document covers onshore and nearshore cone penetration test (CPT). For requirements for offshore CPT, see ISO 19901-8.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 99 | undefined |
| 101 | European foreword Endorsement notice |
| 104 | Foreword |
| 105 | Introduction |
| 106 | 1 Scope 2 Normative references 3 Terms, definitions and symbols |
| 107 | 3.1 Terms and definitions |
| 113 | 3.2 Symbols |
| 116 | 4 Equipment 4.1 General 4.1.1 Tolerances 4.1.2 Gaps and soil seals 4.2 Cone penetrometer 4.3 Surface roughness and hardness |
| 117 | 4.4 Cone |
| 118 | 4.5 Friction sleeve |
| 119 | 4.6 Filter element 4.6.1 General filter location 4.6.2 Pore pressure u1 |
| 120 | 4.6.3 Pore pressure u2 4.6.4 Pore pressure u3 4.7 Pushrods 4.8 Measuring system 4.8.1 Accuracy |
| 121 | 4.8.2 Sensors for cone resistance and sleeve friction 4.8.3 Sensor for pore pressure 4.8.4 Sensor for inclination 4.8.5 Sensor for temperature 4.8.6 Measuring of penetration length 4.8.7 Raw data |
| 122 | 4.9 Thrust machine 5 Test procedures 5.1 Selection of equipment, procedures and evaluation of results 5.1.1 General 5.1.2 Calibration and verification requirements |
| 123 | 5.1.3 Cone penetrometer class conformity assessment |
| 125 | 5.2 Position and verticality of thrust machine 5.3 Preparation of the test |
| 126 | 5.4 Pushing of the cone penetrometer 5.5 Use of friction-reducing techniques 5.6 Frequency of test data recording 5.7 Registration of penetration length |
| 127 | 5.8 Pore pressure dissipation test (PPDT) 5.9 Test completion |
| 128 | 5.10 Evaluation of CPT/CPTU in relation to test category |
| 129 | 5.11 Equipment checks and calibrations 5.12 Safety requirements 6 Test results 6.1 Measured parameters |
| 130 | 6.2 Correction of parameters |
| 132 | 6.3 Calculated parameters 7 Reporting 7.1 General 7.2 Reporting of test results 7.2.1 General information |
| 133 | 7.2.2 Location of the test 7.2.3 Test equipment |
| 134 | 7.2.4 Test results 7.3 Presentation of test results |
| 136 | Annex A (informative) Suitability of test methods |
| 139 | Annex B (normative) Maintenance, checks and calibration |
| 157 | Annex C (informative) Calibration report example |
| 167 | Annex D (normative) Calculation of penetration depth |
| 168 | Annex E (informative) Correction of sleeve friction for water pressure |
| 169 | Annex F (informative) Preparation of the piezocone |
| 170 | Annex G (informative) Friction reduction techniques |
| 171 | Bibliography |
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