Preview Questions Geotechnical Engineer | Role Specific Skill

Question 1: What is the main objective of performing a direct shear test on soil samples?

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To determine the soil's shear strength under controlled conditions

To determine the plasticity and liquidity limits of the soil

To measure the permeability of the soil

To evaluate the soil's compressibility under load

Question 2: How is a field vane shear test different from laboratory tests in determining soil shear strength?

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Field vane tests are more accurate than laboratory tests

The field vane shear test provides immediate in-situ shear strength measurements, while laboratory tests require soil samples

Field vane tests are used only for fine-grained soils, while lab tests are for coarse soils

Laboratory tests measure shear strength in field conditions

Question 3: What is the significance of assessing soil permeability during site analysis for foundation design?

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It indicates the shear strength of the soil under load

It determines the soil's ability to resist seismic forces

It helps determine drainage requirements and the likelihood of water infiltration under foundation loads

It measures the consolidation rate of the soil

Question 4: How is the Consolidation Test (Oedometer test) used to predict settlement in clayey soils during foundation design?

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It measures the rate and amount of consolidation under vertical loading, helping estimate future settlement

It tests the soil's shear strength and ability to resist lateral forces

It evaluates the water retention capacity of the soil

It assesses the soil's ability to compact under pressure

Question 5: How does groundwater fluctuation contribute to risk in foundation design?

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Groundwater fluctuations can increase soil instability, leading to settlement or heave under the foundation

Groundwater fluctuations have no impact on foundation design

Groundwater fluctuations only affect surface drainage

Groundwater fluctuation improves soil compaction and stability

Question 6: In seismic design, what role do foundations play in mitigating earthquake damage?

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Foundations should only consider aesthetic stability in seismic zones

Foundations are only designed to support vertical loads, with no concern for seismic forces

Foundations must be designed to resist lateral forces and ground shaking to ensure building stability

Foundations should be as shallow as possible in seismic zones