PART E - APPLICATION OF SOIL INFORMATION
Information concerning the soil types of a region may be used to estimate the general engineering properties and
trafficability characteristics of the soils.
1. General Engineering Properties. Each category within the USCS consists of a specific soil type exhibiting
its own unique engineering properties.
a. Well-Graded Gravel. Well-graded gravels display the following engineering characteristics:
(1)
Drainage: Excellent
(2)
Compressibility/expansion: Negligible
(3)
Permeability when compacted: Pervious
(4)
Shear strength when compacted and saturated: Excellent
(5)
Potential frost action: None to very slight
(6)
Value as a construction material: Excellent
b. Poorly Graded Gravel. Poorly graded gravels display the following engineering characteristics:
(1)
Drainage: Excellent
(2)
Compressibility/expansion: Negligible
(3)
Permeability when compacted: Very pervious
(4)
Shear strength when compacted and saturated: Good
(5)
Potential frost action: None to very slight
(6)
Value as a construction material: Good
c. Silty Gravel. Silty gravels display the following engineering characteristics:
(1)
Drainage: Fair to nearly impervious
(2)
Compressibility/expansion: Very slight to slight
(3)
Permeability when compacted: Semipervious to impervious
(4)
Shear strength when compacted and saturated: Good
(5)
Potential frost action: Slight to moderate
(6)
Value as a construction material: Good
d. Clayey Gravel. Clayey gravels display the following engineering characteristics:
(1)
Drainage: Poor to nearly impervious
(2)
Compressibility/expansion: Slight
(3)
Permeability when compacted: Impervious
(4)
Shear strength when compacted and saturated: Good to fair
(5)
Potential frost action: Slight to moderate
(6)
Value as a construction material: Good
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EN5341
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