1. Use the general definitions to derive the relation between the Moist Unit Weight, Specific Gravity of Solids, Moisture Content, and Void Ratio: G,Y»(1+w) Y = 1+e the Rule of Tbumb
1. Use the general definitions to derive the relation between the Moist Unit Weight, Specific Gravity of Solids, Moisture Content, and Void Ratio: G,Y»(1+w) Y = 1+e the Rule of Tbumb
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Prob Set 2 Physical Prope...
Problem Set 2:
1. Use the general definitions to derive the relation between the Moist Unit
Weight, Specific Gravity of Solids, Moisture Content, and Void Ratio:
G,Y»(1+w)
1+e
ote: Apply the Rule of Thumb
erive the relation between Moist Unit Weiaht. Specific Gravitv of Solids.
ree of Saturation, and Voic
rive an expression the bu
weight (Ya), the porosity (n), ar
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CE-PC 314: Geotechnical Engineering (Soil I
ndr pperna hegt
Mark Anthony +96
Problem Set 2:
4. A sample of gray silty clay has a mass of 126 kg. Laboratory tests results
give a moist density (p) of 2.05 g/cm³, a specific gravity of solids (G,) of
2.71, and a moisture content (w) of 15.7%.
First determine all entries in the phase diagram. Then determine the void
ratio (e), the porosity (n), the degree of saturation (S), the dry density
(Pa), the dry unit weight (ya), and the moist unit weight (y).
Draw the Phase diagram.
CE-PC 314: Geotechnical Engineering (Soil Mechanics)
Engr. Mark Anthony Banting
Problem Set 2:
5. A cubical sample of San Francisco Bay mud (a soft marine silty clay) has
been prepared for testing in a true triaxial device. The dimensions of the
sample are 76 mm by 76 mm by 76 mm. The sample has a moisture
content (w) of 68.5% and a moist density (r) of 1.44 g/cm³. The average
specific gravity of solids (G,) is 2.55.
Determine (a) the void ratio (e) and degree of saturation (S), (b) the
moist density (g) and moisture content (w) if the soil becomes saturated
at the same total volume, and (c) the density (p) of the soil if all pore fluid
is dried off with no change in total volume.
Provide the Phase Diagram.
CE-PC 314: Geotechnical Engineering (Soil Mechanics)
Engr. Mark Anthony Banting
Problem Set 2:
5. For an undisturbed soil, the total volume is 5.1 ft8, the moist weight is 601
Ib, the dry weight is 523 Ib, and the porosity is 37.5%. Calculate (a) the
moisture content (w), (b) the dry unit weight (Ya), (c) the moist unit weight
(Y7), (d) the degree of saturation (S), (e) the void ratio (e), and (f) the
specific gravity of solids (G,).
Provide the Phase Diagram
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