Question
Download Solution PDFIn Lane's weighted creep theory for hydraulic structures, what will be the type of soil if the safe hydraulic gradient is 1/8.5?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Lane's creep coefficient for different soils is as follows:
| Type of soil | C1 | Lane's safe hydraulic gradient (I/C1) not exceeding |
| Very fine sand or silt | 8.5 | 1/8.5 |
| Fine sand | 7.0 | 1/7.0 |
| Medium sand | 6.0 | 1/6.0 |
| Coarse sand | 5.0 | 1/5.0 |
| Fine gravel | 4.0 | 1/4.0 |
| Medium gravel | 3.5 | 1/3.5 |
| Coarse gravel including cobbles | 3.0 | 1/3.0 |
| Boulders with some cobbles and gravel | 2.5 | 1/2.5 |
| Soft clay | 3.0 | 1/3.0 |
| Medium clay | 2.0 | 1/2.0 |
| Hard clay | 1.8 | 1/1.8 |
| Very hard clay or hardpan | 1.6 | 1/1.6 |
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