e. Well-Graded Sand. Well-graded sands 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
f. Poorly Graded Sand. Poorly graded sands display the following engineering characteristics
(1)
Drainage: Excellent
(2)
Compressibility/expansion: Negligible
(3)
Permeability when compacted: Pervious
(4)
Shear strength when compacted and saturated: Good
(5)
Potential frost action: None to very slight
(6)
Value as a construction material: Fair
g. Silty Sand. Silty sands display the following engineering characteristics:
(1)
Drainage: Fair to nearly imperious
(2)
Compressibility/expansion: Very slight to moderate
(3)
Permeability when compacted: Semipervious to impervious
(4)
Shear strength when compacted and saturated: Good
(5)
Potential frost action: Slight to high
(6)
Value as a construction material: Fair
h. Clayey Sand. Clayey sands display the following engineering characteristics:
(1)
Drainage: Poor to nearly impervious
(2)
Compressibility/expansion: Slight to moderate
(3)
Permeability when compacted: Impervious
(4)
Shear strength when compacted and saturated: Good to fair
(5)
Potential frost action: Slight to high
(6)
Value as a construction material: Good
i. Silt With Low Plasticity. Silts with low plasticity display the following engineering characteristics:
(1)
Drainage: Fair to poor
(2)
Compressibility/expansion: Slight to moderate
(3)
Permeability when compacted: Semipervious to impervious
(4)
Shear strength when compacted and saturated: Fair
(5)
Potential frost action: Moderate to very high
(6)
Value as a construction material: Fair
EN5341
3-22
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