Civil Engineering (CE) Exam > Civil Engineering (CE) Questions > Consider the following statements:1. The soil...
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Consider the following statements:
1. The soil obtained from wash boring is a representative sample.
2. Recovery ratio will be high during drilling in sound rock.
3. Hollow stem augers are sometimes used to. drill holes in silty sand.
Which of these statements is/are correct?
1. The soil obtained from wash boring is a representative sample.
2. Recovery ratio will be high during drilling in sound rock.
3. Hollow stem augers are sometimes used to. drill holes in silty sand.
Which of these statements is/are correct?
- a)1 only
- b)1 and 2
- c)2 and 3
- d)3 only
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Consider the following statements:1. The soil obtained from wash borin...
Soil samples obtained from auger borings and wash borings are non-representative samples. Non-representative samples consist of mixture of materials from various soil or rock strata or are samples from which some mineral constituents have been lost or got mixed up.
Most Upvoted Answer
Consider the following statements:1. The soil obtained from wash borin...
Statement analysis:
Statement 1: The soil obtained from wash boring is a representative sample.
Statement 2: Recovery ratio will be high during drilling in sound rock.
Statement 3: Hollow stem augers are sometimes used to drill holes in silty sand.
Explanation:
Statement 1: The soil obtained from wash boring is a representative sample.
- Wash boring is a method of drilling where water is used to flush out the drilled material.
- The soil obtained from wash boring may not be a representative sample as the water used in the process can alter the soil properties.
- Therefore, Statement 1 is incorrect.
Statement 2: Recovery ratio will be high during drilling in sound rock.
- Recovery ratio is the ratio of the amount of material recovered to the amount of material drilled.
- In sound rock, the recovery ratio is high as the drilling process is less likely to cause material loss.
- Therefore, Statement 2 is correct.
Statement 3: Hollow stem augers are sometimes used to drill holes in silty sand.
- Hollow stem augers are drilling tools that have a hollow center that can be used to collect samples during drilling.
- Hollow stem augers are commonly used in soil and geotechnical investigations.
- They can be used to drill holes in silty sand as the hollow center helps to collect the sample without disturbing the soil structure.
- Therefore, Statement 3 is correct.
Conclusion:
From the above analysis, it can be concluded that Statement 2 and Statement 3 are correct while Statement 1 is incorrect. Therefore, the correct answer is option C (2 and 3).
Statement 1: The soil obtained from wash boring is a representative sample.
Statement 2: Recovery ratio will be high during drilling in sound rock.
Statement 3: Hollow stem augers are sometimes used to drill holes in silty sand.
Explanation:
Statement 1: The soil obtained from wash boring is a representative sample.
- Wash boring is a method of drilling where water is used to flush out the drilled material.
- The soil obtained from wash boring may not be a representative sample as the water used in the process can alter the soil properties.
- Therefore, Statement 1 is incorrect.
Statement 2: Recovery ratio will be high during drilling in sound rock.
- Recovery ratio is the ratio of the amount of material recovered to the amount of material drilled.
- In sound rock, the recovery ratio is high as the drilling process is less likely to cause material loss.
- Therefore, Statement 2 is correct.
Statement 3: Hollow stem augers are sometimes used to drill holes in silty sand.
- Hollow stem augers are drilling tools that have a hollow center that can be used to collect samples during drilling.
- Hollow stem augers are commonly used in soil and geotechnical investigations.
- They can be used to drill holes in silty sand as the hollow center helps to collect the sample without disturbing the soil structure.
- Therefore, Statement 3 is correct.
Conclusion:
From the above analysis, it can be concluded that Statement 2 and Statement 3 are correct while Statement 1 is incorrect. Therefore, the correct answer is option C (2 and 3).
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Consider the following statements:1. The soil obtained from wash boring is a representative sample.2. Recovery ratio will be high during drilling in sound rock.3. Hollow stem augers are sometimes used to. drill holes in silty sand.Which of these statements is/are correct?a)1 onlyb)1 and 2c)2 and 3d)3 onlyCorrect answer is option 'C'. Can you explain this answer?
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Consider the following statements:1. The soil obtained from wash boring is a representative sample.2. Recovery ratio will be high during drilling in sound rock.3. Hollow stem augers are sometimes used to. drill holes in silty sand.Which of these statements is/are correct?a)1 onlyb)1 and 2c)2 and 3d)3 onlyCorrect answer is option 'C'. Can you explain this answer? for Civil Engineering (CE) 2025 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about Consider the following statements:1. The soil obtained from wash boring is a representative sample.2. Recovery ratio will be high during drilling in sound rock.3. Hollow stem augers are sometimes used to. drill holes in silty sand.Which of these statements is/are correct?a)1 onlyb)1 and 2c)2 and 3d)3 onlyCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements:1. The soil obtained from wash boring is a representative sample.2. Recovery ratio will be high during drilling in sound rock.3. Hollow stem augers are sometimes used to. drill holes in silty sand.Which of these statements is/are correct?a)1 onlyb)1 and 2c)2 and 3d)3 onlyCorrect answer is option 'C'. Can you explain this answer?.
Consider the following statements:1. The soil obtained from wash boring is a representative sample.2. Recovery ratio will be high during drilling in sound rock.3. Hollow stem augers are sometimes used to. drill holes in silty sand.Which of these statements is/are correct?a)1 onlyb)1 and 2c)2 and 3d)3 onlyCorrect answer is option 'C'. Can you explain this answer? for Civil Engineering (CE) 2025 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about Consider the following statements:1. The soil obtained from wash boring is a representative sample.2. Recovery ratio will be high during drilling in sound rock.3. Hollow stem augers are sometimes used to. drill holes in silty sand.Which of these statements is/are correct?a)1 onlyb)1 and 2c)2 and 3d)3 onlyCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements:1. The soil obtained from wash boring is a representative sample.2. Recovery ratio will be high during drilling in sound rock.3. Hollow stem augers are sometimes used to. drill holes in silty sand.Which of these statements is/are correct?a)1 onlyb)1 and 2c)2 and 3d)3 onlyCorrect answer is option 'C'. Can you explain this answer?.
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