Soil Improvement Techniques Chapter 1 Quiz

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What is the general practice for buildings if the soil close to the ground surface has sufficient bearing capacity?

Use pier foundations

Use deep foundations

Use shallow foundations (correct)

Use pile foundations

Which method may prove more economical than deep foundations in some cases?

Sand and stone columns (correct)

Vibroflotation

Mechanical compaction

Preloading

Which technique involves the use of admixtures for soil improvement?

Injection of suitable grouts

Use of geotextiles (correct)

Mechanical compaction

Vibroflotation

Which method involves the injection of suitable grouts for improving soil at a construction site?

Use of admixtures Signup and view all the answers

What method refers to the technique of removal and replacement for improving soil behavior?

Preloading Signup and view all the answers

What is the primary purpose of studying the optimum thickness of replacement layers and the most suitable material for soil improvement?

To minimize construction costs while improving soil bearing capacity and minimizing settlement Signup and view all the answers

In what situation would pile or pier foundations be the obvious choice?

When the topsoil is loose or soft Signup and view all the answers

In which category of soil improvement does precompression or preloading fall?

Soil improvement without admixtures Signup and view all the answers

What is the main advantage of soil replacement over other techniques and deep foundation?

It requires less delay to construction Signup and view all the answers

Why is the determination of the replacement soil thickness for soil replacement based on experience?

Because the region of high stress in a shallow foundation is only 1 to 1.5 its breadth Signup and view all the answers

Which type of soil is precompression or preloading technique most effective in?

Clayey soil Signup and view all the answers

What does soil replacement aim to achieve under shallow foundations?

Reduce consolidation settlement and increase soil bearing capacity Signup and view all the answers

In the context of soil improvement, what is the primary purpose of precompression or preloading technique?

To minimize consolidation settlement before construction of the structure Signup and view all the answers

What is the main reason for using precompression or preloading technique in clayey soils?

Due to low permeability of clayey soils Signup and view all the answers

Why does clayey soil require a very long time for desired consolidation to occur even with very high surcharge load?

Because clayey soils have low permeability. Signup and view all the answers

What does soil replacement aim to achieve under shallow foundations?

Reduce consolidation settlement and increase soil bearing capacity. Signup and view all the answers

Soil Improvement Techniques Chapter 1 Quiz

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Questions and Answers

What is the general practice for buildings if the soil close to the ground surface has sufficient bearing capacity?

Which method may prove more economical than deep foundations in some cases?

Which technique involves the use of admixtures for soil improvement?

Which method involves the injection of suitable grouts for improving soil at a construction site?

What method refers to the technique of removal and replacement for improving soil behavior?

What is the primary purpose of studying the optimum thickness of replacement layers and the most suitable material for soil improvement?

In what situation would pile or pier foundations be the obvious choice?

In which category of soil improvement does precompression or preloading fall?

What is the main advantage of soil replacement over other techniques and deep foundation?

Why is the determination of the replacement soil thickness for soil replacement based on experience?

Which type of soil is precompression or preloading technique most effective in?

What does soil replacement aim to achieve under shallow foundations?

In the context of soil improvement, what is the primary purpose of precompression or preloading technique?

What is the main reason for using precompression or preloading technique in clayey soils?

Why does clayey soil require a very long time for desired consolidation to occur even with very high surcharge load?

What does soil replacement aim to achieve under shallow foundations?

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