Preview Questions Geotechnical Engineer | Role Specific Skill

Question 1: In a field compaction test, what is the significance of the dry density of soil?

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It determines how compacted the soil is, influencing the soil's strength and stability

It provides the soil's thermal conductivity

It indicates the soil's water holding capacity

It measures the amount of organic matter in the soil

Question 2: How does the particle size distribution of soil influence its behavior in soil testing?

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It affects the soil's compaction, permeability, and shear strength

It determines the water retention capacity only

It has no effect on soil behavior

It affects the soil's color and texture

Question 3: How does the consolidation behavior of soil affect the long-term stability of foundations in clayey soils?

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Consolidation accelerates settlement, reducing the need for deep foundations

Consolidation leads to soil compaction, improving foundation stability

Consolidation has no effect on foundation stability

Slow consolidation can lead to excessive settlement under load, requiring deeper or more robust foundations

Question 4: What does the plasticity index (PI) in soil testing indicate about a soil's properties?

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The range of moisture content between liquid and plastic limits

The soil's compaction characteristics

The shear strength of the soil

The soil's moisture retention capacity

Question 5: 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

Laboratory tests measure shear strength in field conditions

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

Question 6: How does soil compaction affect foundation stability?

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Soil compaction has no effect on foundation stability

Increased compaction reduces foundation stability

Proper compaction increases soil density, improving foundation support and reducing settlement risks

Increased compaction leads to faster settlement of foundations