For Midterm Flashcards

1
Q

Stress due to soil and water only

A

Geostatic Stress

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2
Q

Stress due to construction of fills and foundations

A

Induced Stress

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3
Q

Stress perpendicular to the plane

A

Normal Stress

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4
Q

Stress parallel to the plane

A

Shear Stress

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5
Q

Plane without shear stress

A

Principal Plane

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6
Q

If the planes are parallel, stress are _____

A

equal

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7
Q

Condition where Effective stress is zero

A

Boiling or Quick Condition

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8
Q

If OCR=1

A

Normally Consolidated

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9
Q

If OCR >1

A

Overconsolidated

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10
Q

If OCR<1

A

Under consolidated

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11
Q

The internal resistance per unit area that the soil mass can offer to resist failure

A

Shear Strength

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12
Q

A material fails not because due to maximum Normal stress and Shearing Stress

A

Mohr

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13
Q

The relationship between Normal and Shear Stress is linear

A

Coulomb

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14
Q

Other term for the angle of internal friction

A

Angle of shearing resistance

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15
Q

Other term for minimum principal stress

A
  • Confining pressure
  • Lateral Pressure
  • Radial Stress
  • Cell Pressure
  • Chamber Pressure
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16
Q

Other for the additional pressure

A
  • Deviator Stress

- Plunger Stress

17
Q

Other term for maximum principal stress

A

Axial Stress

18
Q

2 components of shear strength

A

Cohesive and Frictional

19
Q

Angle of Internal Friction is 0

Cohesion is also 0

A

Granular Soils

20
Q

Angle of Internal Friction is -

Cohesion is greater than 0

A

Saturated

Example: Plastic Clay

21
Q

Angle of Internal Friction is greater than 0

Cohesion is also greater than 0

A

General Case

22
Q

In Direct Shear Test (DST), constant rate of shear displacement is applied.

A

Strain controlled test

23
Q

In Direct Shear Test (DST), shear force is applied in equal increments

A

Stress Controlled Test

24
Q

Dead weight is applied, compressive axial stresses at a constant rate and hydraulic pressure in all directions.

A

Triaxial Shear Test

25
Shear test where soil is always saturated
Triaxial Shear Test
26
Saturated specimen is subjected to an all-around confining pressure. Pore water pressure increases, drainage is then opened, excess water is dissipated and consolidation will occur.
Consolidated Drained Test (CD Test)
27
Soil drainage remains closed.
Consolidated Undrained Test (CU Test)
28
Pressures (exerted) and forces extended by the earth to retaining structures
Lateral Earth Pressure