Modulus of Subgrade Reaction Calculator
As per IS 2911 for Granular Soils
Results
Soil Type:
Interpolated Dry ηh:
× 10³ kN/m³
Interpolated Submerged ηh:
× 10³ kN/m³
| Soil Type | SPT N Value | Dry ηh × 10³ (kN/m³) | Submerged ηh × 10³ (kN/m³) |
|---|---|---|---|
| Very Loose Sand | 0 – 4 | < 0.4 | < 0.2 |
| Loose Sand | 4 – 10 | 0.4 – 2.5 | 0.2 – 1.4 |
| Medium Sand | 10 – 35 | 2.5 – 7.5 | 1.4 – 5.0 |
| Dense Sand | > 35 | 7.5 – 20.0 | 5.0 – 12.0 |
Interpolation Logic Used:
Linear interpolation has been incorporated for intermediate SPT N values as recommended in IS 2911.
Formula Used:
η = η₁ + [(N − N₁) / (N₂ − N₁)] × (η₂ − η₁)
Linear interpolation has been incorporated for intermediate SPT N values as recommended in IS 2911.
Formula Used:
η = η₁ + [(N − N₁) / (N₂ − N₁)] × (η₂ − η₁)
0 Comments