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| Q. |
Which of the following statement is correct? |
| A. | The sub-base thickness is directly proportional to the group index of the soil |
| B. | The higher the group index of the soil, the larger is the thickness of the sub-base. |
| C. | If the group index value of the sub-base is between 5 and 9, then the sub-base is poor. |
| D. | all of the above |
| Answer» D. all of the above | |
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