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In the direct shear test, the normal stress is calculated as the load ring reading divided by the corrected area.
In the direct shear test, the normal stress is calculated as the load ring reading divided by the corrected area.
True
The shear stress is calculated as the shear force divided by the correct area, only at failure.
The shear stress is calculated as the shear force divided by the correct area, only at failure.
True
The friction angle is calculated as the tangent of the normal stress divided by the shear force.
The friction angle is calculated as the tangent of the normal stress divided by the shear force.
False
The peak stress is the maximum shear stress reached during the direct shear test.
The peak stress is the maximum shear stress reached during the direct shear test.
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The horizontal dial gauge is used to measure the vertical displacement of the specimen.
The horizontal dial gauge is used to measure the vertical displacement of the specimen.
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The cohesion is calculated as the shear stress at failure minus the normal stress times the tangent of the friction angle.
The cohesion is calculated as the shear stress at failure minus the normal stress times the tangent of the friction angle.
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The unconfined compression test is a type of triaxial test where the minor principal stress is equal to the applied axial stress.
The unconfined compression test is a type of triaxial test where the minor principal stress is equal to the applied axial stress.
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The unconfined compressive strength is defined as the minimum compressive stress at failure.
The unconfined compressive strength is defined as the minimum compressive stress at failure.
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A remolding device is required for testing undisturbed samples.
A remolding device is required for testing undisturbed samples.
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The balance is used to measure the axial deformation of the specimen.
The balance is used to measure the axial deformation of the specimen.
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The electrically driven strain-controlled device is a required apparatus for the unconfined compression test.
The electrically driven strain-controlled device is a required apparatus for the unconfined compression test.
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The objective of the unconfined compression test is to determine the shear strength of non-cohesive soil.
The objective of the unconfined compression test is to determine the shear strength of non-cohesive soil.
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The aspect ratio of the specimen should be between 2 and 3 to prevent buckling action.
The aspect ratio of the specimen should be between 2 and 3 to prevent buckling action.
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The final moisture content of the specimen is not a required measurement.
The final moisture content of the specimen is not a required measurement.
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The corrected area is calculated as Ao/(1-Δh/Lo).
The corrected area is calculated as Ao/(1-Δh/Lo).
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The axial force is calculated as the load ring reading divided by the corrected area.
The axial force is calculated as the load ring reading divided by the corrected area.
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The unconfined compression test is used to predict the bearing capacity of piles.
The unconfined compression test is used to predict the bearing capacity of piles.
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The Mohr's Circle is used to calculate the cohesion of the soil.
The Mohr's Circle is used to calculate the cohesion of the soil.
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