Term
|
Definition
| e = volume of voids/volume of soil solids |
|
|
Term
|
Definition
| n = volume of voids/total volume |
|
|
Term
|
Definition
| S = volume of water/volume of voids |
|
|
Term
| Moisture Content/Water Content |
|
Definition
| w = weight of water/weight of soil solids |
|
|
Term
| (Apparent/Moist/Bulk) Unit Weight |
|
Definition
Gamma = total weight/total volume
Gamma = W_s(1 + w)/V |
|
|
Term
|
Definition
Gamma_d = weight of soil solids/total volume
Gamma_d = Gamma_s/(1+e)
Gamma_d = Gamma/(1+w) |
|
|
Term
|
Definition
moisture content at the point of transition from plastic to liquid state
Casagrande's Spoon - when soil struck 25 times the groove closes .5 inches |
|
|
Term
|
Definition
Gamma_sat = (W_s + W_w[sat])/total volume
Gamma_sat = Gamma_d(1+w[sat]) |
|
|
Term
|
Definition
moisture content at the point of transition from semisolid to plastic state
when rolled into 3.2mm in diameter it crumbles |
|
|
Term
|
Definition
| moisture content at which the volume change of the soil mass ceases |
|
|
Term
|
Definition
|
|
Term
|
Definition
relative consistency of a cohesive soil in the natural state
LI = (w-PL)/(LL-PL) |
|
|
Term
| Unified Soil Classification System |
|
Definition
| classifies soils with similar properties into groups and subgroups based on their engineering behavior |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| low plasticity (liquid limit less than 50) |
|
|
Term
|
Definition
| high plasticity (liquid limit more than 50) |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| Silty Clayey Gravel (with sand if >15%) |
|
|
Term
|
Definition
| well graded sand with silt (and gravel if >15% gravel) |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
