Soil properties of each layer within the idealised hill slope
| Soil property | Topsoil | Bottom soil | Weathered saprolite | Bedrock |
|---|---|---|---|---|
| Classification (USCS) | Clayey sand (SC) | Silty clay (CH) | — | Volcanic basalt bedrock |
| Unit weight: kN/m3 | 15 | 15.74 | 20 | — |
| Specific gravity | 2.60 | 2.73 | 2.65 | — |
| Porosity | 0.67 | 0.65 | — | — |
| Saturated hydraulic conductivity, ks: m/s | 0.717 × 10−7 | 0.115 × 10−8 | 0.706 × 10−7 | 0.497 × 10−7 |
| Saturated volumetric water content, θs | 0.669 | 0.649 | 0.40 | 0.50 |
| Effective cohesion, c′: kPa | 5.1 | 8.6 | 15 | — |
| Effective friction angle, φ′: ° | 29.7 | 28.8 | 35 | — |
| Soil property | Topsoil | Bottom soil | Weathered saprolite | Bedrock |
|---|---|---|---|---|
| Classification (USCS) | Clayey sand (SC) | Silty clay (CH) | — | Volcanic basalt bedrock |
| Unit weight: kN/m3 | 15 | 15.74 | 20 | — |
| Specific gravity | 2.60 | 2.73 | 2.65 | — |
| Porosity | 0.67 | 0.65 | — | — |
| Saturated hydraulic conductivity, | 0.717 × 10−7 | 0.115 × 10−8 | 0.706 × 10−7 | 0.497 × 10−7 |
| Saturated volumetric water content, | 0.669 | 0.649 | 0.40 | 0.50 |
| Effective cohesion, | 5.1 | 8.6 | 15 | — |
| Effective friction angle, | 29.7 | 28.8 | 35 | — |
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