Cohesive Soil Characteristics
Table:
Soil characteristics for cohesive soil, calculated values according to DIN 1055 [DIN1055]
|
Type of soil with abbreviation DIN 18196
|
Condition | Specific Weight | Shear strength | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Moist | Saturated | Bouyant unit weight | Friction | Cohesion | |||||||||||
|
γ [kN/m³] |
γr [kN/m³] |
γ' [kN/m³] |
φ' |
c' [kN/m²] |
cu [kN/m²] |
||||||||||
| Silts | |||||||||||||||
|
Low plasticity silts (wL < 35%) |
UL | soft | 17.5 | 19.0 | 9.0 | 27.5° | 0 | 0 | |||||||
| firm | 18.5 | 20.0 | 10.0 | 2 | 15 | ||||||||||
| stiff | 19.5 | 21.0 | 11.0 | 5 | 40 | ||||||||||
|
Medium plasticity silts (35% ≤ wL ≤ 50%) |
UM | soft | 16.5 | 18.5 | 8.5 | 22.5° | 0 | 5 | |||||||
| firm | 18.0 | 19.5 | 9.5 | 5 | 25 | ||||||||||
| stiff | 19.5 | 20.5 | 10.5 | 10 | 60 | ||||||||||
| Clays | |||||||||||||||
|
Low plasticity clays (wL < 35%) |
TL | soft | 19.0 | 19.0 | 9.0 | 22.5° | 0 | 0 | |||||||
| firm | 20.0 | 20.0 | 10.0 | 5 | 15 | ||||||||||
| stiff | 21.0 | 21.0 | 11.0 | 10 | 40 | ||||||||||
|
Medium plasticity clays
(35% ≤ wL ≤ 50%)
|
TM | soft | 18.5 | 18.5 | 8.5 | 17.5° | 5 | 5 | |||||||
| firm | 19.5 | 19.5 | 9.5 | 10 | 25 | ||||||||||
| stiff | 20.5 | 20.5 | 10.5 | 15 | 60 | ||||||||||
|
High plasticity clays
(wL > 50%)
|
TA | soft | 17.5 | 17.5 | 7.5 | 15.0° | 5 | 15 | |||||||
| firm | 18.5 | 18.5 | 8.5 | 10 | 35 | ||||||||||
| stiff | 19.5 | 19.5 | 9.5 | 15 | 75 | ||||||||||
