Research Article
Evaluation of Critical Parameters to Improve Slope Drainage System
Table 4
Details of experiments performed in this study.
| | Test | Types of soil | Saturated unit weight of soil (kN/m3) | Quantity of pipe installed | Aggregate filter material | Envelope filter material | Pipe envelope (6 mm thick) | Pipe angle (°) | Rainfall intensity (mm/hr) |
| | 1 | Sand | 14 | 1 | Quarry gravel | Geotextile | Geotextile | 5 | 434.1 | | 2 | Sand | 14 | 1 | Oil palm shell | Geotextile | Geotextile | 5 | 434.1 | | 3 | Sand | 14 | 2 | Quarry gravel | Geotextile | Geotextile | 5 | 434.1 | | 4 | Sand | 14 | 1 | Quarry gravel | Net | Geotextile | 5 | 434.1 | | 5 | Sand | 14 | 2 | Oil palm shell | Geotextile | Geotextile | 5 | 434.1 | | 6 | Lateritic soil | 12 | 1 | Quarry gravel | Geotextile | Geotextile | 5 | 434.1 |
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