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The distribution of CPT test holes and the number of soil samples for each soil type.
| Engineering classification of soils | The soil classification zones in the diagram | Accuracy |
|---|---|---|
| Silty clay | Zone 3 | 0.717 |
| Silt | Zone 4 | 1.0 |
| Fine sand | Zone 5 | 0.528 |
| Medium sand | Zone 5 | 1.0 |
| Overall(mean value) | from Zone 3 to 5 | 0.817 |
