Environmental Engineering Reference
In-Depth Information
FIGURE 5.12
Rootmat and silty clay exposed in
excavation (New Jersey Meadowlands).
FIGURE 5.13
Undisturbed sample of clayey sand
overlying organic silty at a 25 ft depth
(Leesburg, New Jersey).
(see
Figure 7.11),
glacial till (see
Figure 7.80),
and aeolian soils, thereby representing a zone
of weakness in otherwise strong formations.
Characteristics
Organic deposits are characterized by very low natural densities, very high natural water
contents, a loss in mass upon ignition, and substantial shrinkage upon drying.
5.3.5
Related Engineering Properties
General
The major soil groupings have distinguishing characteristics that relate directly to their
engineering properties.
