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Assuming that a river bed level does not change and the depth of water in the river was 10m, 15m, and 8m during the months of February, July and December respectively of a particular year. The average bulk density of the soil is 20 kN/m3. The density of water is 10 kN/m3. The effective stress at a depth of 10 m below the river bed during these months would be
- a)300 kN/m2, in February, 350 kN/m2 in July and 320 kN/m2 in December
- b)100 kN/m2 in February, 100 kN/m2 in July and 100 kN/m2 in December
- c)200 kN/m2 in February, 250 kN/m2 in July and 180 kN/m2 in December
- d)300 kN/m2 in February, 350 kN/m2 in July and 280 kN/m2 in December
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Assuming that a river bed level does not change and the depth of water...
Since the river bed level does not change and the depth of water is changing only above the river bed, the effective stress below the river bed will not change.
Total stress at a depth of 10 m below river bed.
σ = 20 × 10 = 200 kN/m2
Pore water pressure,
u = 10 × 10 = 100 kN/m2
∴ Effective stress,
= 100 kN/m2
Thus effective stress will be 100 kN/m2 each on the month of February, July and December.
Most Upvoted Answer
Assuming that a river bed level does not change and the depth of water...
Calculation of effective stress at different depths during different months:
1. February:
- Depth of water = 10 m
- Density of water = 10 kN/m3
- Bulk density of soil = 20 kN/m3
- Effective stress = (Depth of water x Density of water) + (Depth of soil x Bulk density of soil)
= (10 x 10) + (0 x 20)
= 100 kN/m2
2. July:
- Depth of water = 15 m
- Density of water = 10 kN/m3
- Bulk density of soil = 20 kN/m3
- Effective stress = (Depth of water x Density of water) + (Depth of soil x Bulk density of soil)
= (15 x 10) + (0 x 20)
= 150 kN/m2
3. December:
- Depth of water = 8 m
- Density of water = 10 kN/m3
- Bulk density of soil = 20 kN/m3
- Effective stress = (Depth of water x Density of water) + (Depth of soil x Bulk density of soil)
= (8 x 10) + (2 x 20)
= 100 kN/m2
Therefore, the effective stress at a depth of 10 m below the river bed during the months of February, July, and December would be 100 kN/m2 in all the months. Hence, the correct answer is option B.
1. February:
- Depth of water = 10 m
- Density of water = 10 kN/m3
- Bulk density of soil = 20 kN/m3
- Effective stress = (Depth of water x Density of water) + (Depth of soil x Bulk density of soil)
= (10 x 10) + (0 x 20)
= 100 kN/m2
2. July:
- Depth of water = 15 m
- Density of water = 10 kN/m3
- Bulk density of soil = 20 kN/m3
- Effective stress = (Depth of water x Density of water) + (Depth of soil x Bulk density of soil)
= (15 x 10) + (0 x 20)
= 150 kN/m2
3. December:
- Depth of water = 8 m
- Density of water = 10 kN/m3
- Bulk density of soil = 20 kN/m3
- Effective stress = (Depth of water x Density of water) + (Depth of soil x Bulk density of soil)
= (8 x 10) + (2 x 20)
= 100 kN/m2
Therefore, the effective stress at a depth of 10 m below the river bed during the months of February, July, and December would be 100 kN/m2 in all the months. Hence, the correct answer is option B.
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Community Answer
Assuming that a river bed level does not change and the depth of water...
B. correct answer is B.
effective stress=Total stress - pore water pressure
pore water pressure at depth 10m=Yw X h
= 10 X 10
=100kN/Sq. M
Total stress at depth 10m=Ysat X h
=20 X 10
=200KN/Sq. M
effective stress=200-100KN/Sq. M
=100KN/Sq.M
Since the effective stress in month of Feb at depth of 10m is 100KN/Sq.M and only option B have correct effective stress for February month. It's the correct one.
effective stress=Total stress - pore water pressure
pore water pressure at depth 10m=Yw X h
= 10 X 10
=100kN/Sq. M
Total stress at depth 10m=Ysat X h
=20 X 10
=200KN/Sq. M
effective stress=200-100KN/Sq. M
=100KN/Sq.M
Since the effective stress in month of Feb at depth of 10m is 100KN/Sq.M and only option B have correct effective stress for February month. It's the correct one.
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Assuming that a river bed level does not change and the depth of water in the river was 10m, 15m, and 8m during the months of February, July and December respectively of a particular year. The average bulk density of the soil is 20 kN/m3. The density of water is 10 kN/m3. The effective stress at a depth of 10 m below the river bed during these months would bea)300 kN/m2, in February, 350 kN/m2 in July and 320 kN/m2in Decemberb)100 kN/m2in February, 100 kN/m2in July and 100 kN/m2in Decemberc)200 kN/m2in February, 250 kN/m2in July and 180 kN/m2in Decemberd)300 kN/m2in February, 350 kN/m2in July and 280 kN/m2in DecemberCorrect answer is option 'B'. 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 Assuming that a river bed level does not change and the depth of water in the river was 10m, 15m, and 8m during the months of February, July and December respectively of a particular year. The average bulk density of the soil is 20 kN/m3. The density of water is 10 kN/m3. The effective stress at a depth of 10 m below the river bed during these months would bea)300 kN/m2, in February, 350 kN/m2 in July and 320 kN/m2in Decemberb)100 kN/m2in February, 100 kN/m2in July and 100 kN/m2in Decemberc)200 kN/m2in February, 250 kN/m2in July and 180 kN/m2in Decemberd)300 kN/m2in February, 350 kN/m2in July and 280 kN/m2in DecemberCorrect answer is option 'B'. 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 Assuming that a river bed level does not change and the depth of water in the river was 10m, 15m, and 8m during the months of February, July and December respectively of a particular year. The average bulk density of the soil is 20 kN/m3. The density of water is 10 kN/m3. The effective stress at a depth of 10 m below the river bed during these months would bea)300 kN/m2, in February, 350 kN/m2 in July and 320 kN/m2in Decemberb)100 kN/m2in February, 100 kN/m2in July and 100 kN/m2in Decemberc)200 kN/m2in February, 250 kN/m2in July and 180 kN/m2in Decemberd)300 kN/m2in February, 350 kN/m2in July and 280 kN/m2in DecemberCorrect answer is option 'B'. Can you explain this answer?.
Assuming that a river bed level does not change and the depth of water in the river was 10m, 15m, and 8m during the months of February, July and December respectively of a particular year. The average bulk density of the soil is 20 kN/m3. The density of water is 10 kN/m3. The effective stress at a depth of 10 m below the river bed during these months would bea)300 kN/m2, in February, 350 kN/m2 in July and 320 kN/m2in Decemberb)100 kN/m2in February, 100 kN/m2in July and 100 kN/m2in Decemberc)200 kN/m2in February, 250 kN/m2in July and 180 kN/m2in Decemberd)300 kN/m2in February, 350 kN/m2in July and 280 kN/m2in DecemberCorrect answer is option 'B'. 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 Assuming that a river bed level does not change and the depth of water in the river was 10m, 15m, and 8m during the months of February, July and December respectively of a particular year. The average bulk density of the soil is 20 kN/m3. The density of water is 10 kN/m3. The effective stress at a depth of 10 m below the river bed during these months would bea)300 kN/m2, in February, 350 kN/m2 in July and 320 kN/m2in Decemberb)100 kN/m2in February, 100 kN/m2in July and 100 kN/m2in Decemberc)200 kN/m2in February, 250 kN/m2in July and 180 kN/m2in Decemberd)300 kN/m2in February, 350 kN/m2in July and 280 kN/m2in DecemberCorrect answer is option 'B'. 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 Assuming that a river bed level does not change and the depth of water in the river was 10m, 15m, and 8m during the months of February, July and December respectively of a particular year. The average bulk density of the soil is 20 kN/m3. The density of water is 10 kN/m3. The effective stress at a depth of 10 m below the river bed during these months would bea)300 kN/m2, in February, 350 kN/m2 in July and 320 kN/m2in Decemberb)100 kN/m2in February, 100 kN/m2in July and 100 kN/m2in Decemberc)200 kN/m2in February, 250 kN/m2in July and 180 kN/m2in Decemberd)300 kN/m2in February, 350 kN/m2in July and 280 kN/m2in DecemberCorrect answer is option 'B'. Can you explain this answer?.
Solutions for Assuming that a river bed level does not change and the depth of water in the river was 10m, 15m, and 8m during the months of February, July and December respectively of a particular year. The average bulk density of the soil is 20 kN/m3. The density of water is 10 kN/m3. The effective stress at a depth of 10 m below the river bed during these months would bea)300 kN/m2, in February, 350 kN/m2 in July and 320 kN/m2in Decemberb)100 kN/m2in February, 100 kN/m2in July and 100 kN/m2in Decemberc)200 kN/m2in February, 250 kN/m2in July and 180 kN/m2in Decemberd)300 kN/m2in February, 350 kN/m2in July and 280 kN/m2in DecemberCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Civil Engineering (CE).
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Here you can find the meaning of Assuming that a river bed level does not change and the depth of water in the river was 10m, 15m, and 8m during the months of February, July and December respectively of a particular year. The average bulk density of the soil is 20 kN/m3. The density of water is 10 kN/m3. The effective stress at a depth of 10 m below the river bed during these months would bea)300 kN/m2, in February, 350 kN/m2 in July and 320 kN/m2in Decemberb)100 kN/m2in February, 100 kN/m2in July and 100 kN/m2in Decemberc)200 kN/m2in February, 250 kN/m2in July and 180 kN/m2in Decemberd)300 kN/m2in February, 350 kN/m2in July and 280 kN/m2in DecemberCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Assuming that a river bed level does not change and the depth of water in the river was 10m, 15m, and 8m during the months of February, July and December respectively of a particular year. The average bulk density of the soil is 20 kN/m3. The density of water is 10 kN/m3. The effective stress at a depth of 10 m below the river bed during these months would bea)300 kN/m2, in February, 350 kN/m2 in July and 320 kN/m2in Decemberb)100 kN/m2in February, 100 kN/m2in July and 100 kN/m2in Decemberc)200 kN/m2in February, 250 kN/m2in July and 180 kN/m2in Decemberd)300 kN/m2in February, 350 kN/m2in July and 280 kN/m2in DecemberCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for Assuming that a river bed level does not change and the depth of water in the river was 10m, 15m, and 8m during the months of February, July and December respectively of a particular year. The average bulk density of the soil is 20 kN/m3. The density of water is 10 kN/m3. The effective stress at a depth of 10 m below the river bed during these months would bea)300 kN/m2, in February, 350 kN/m2 in July and 320 kN/m2in Decemberb)100 kN/m2in February, 100 kN/m2in July and 100 kN/m2in Decemberc)200 kN/m2in February, 250 kN/m2in July and 180 kN/m2in Decemberd)300 kN/m2in February, 350 kN/m2in July and 280 kN/m2in DecemberCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of Assuming that a river bed level does not change and the depth of water in the river was 10m, 15m, and 8m during the months of February, July and December respectively of a particular year. The average bulk density of the soil is 20 kN/m3. The density of water is 10 kN/m3. The effective stress at a depth of 10 m below the river bed during these months would bea)300 kN/m2, in February, 350 kN/m2 in July and 320 kN/m2in Decemberb)100 kN/m2in February, 100 kN/m2in July and 100 kN/m2in Decemberc)200 kN/m2in February, 250 kN/m2in July and 180 kN/m2in Decemberd)300 kN/m2in February, 350 kN/m2in July and 280 kN/m2in DecemberCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Assuming that a river bed level does not change and the depth of water in the river was 10m, 15m, and 8m during the months of February, July and December respectively of a particular year. The average bulk density of the soil is 20 kN/m3. The density of water is 10 kN/m3. The effective stress at a depth of 10 m below the river bed during these months would bea)300 kN/m2, in February, 350 kN/m2 in July and 320 kN/m2in Decemberb)100 kN/m2in February, 100 kN/m2in July and 100 kN/m2in Decemberc)200 kN/m2in February, 250 kN/m2in July and 180 kN/m2in Decemberd)300 kN/m2in February, 350 kN/m2in July and 280 kN/m2in DecemberCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Civil Engineering (CE) tests.
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