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For a capillary rise in a soil mass, void size of which is assumed to be 20% of the effective size of the particle (D10), surface tension is observed to be 73 × 10-3 N/m. Calculate the value of empirical constant given by Hazen in cm2 void ratio of the soil sample is 0.30. Take γw = 10 kN/m3
Correct answer is between '0.43,0.45'. Can you explain this answer?
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For a capillary rise in a soil mass, void size of which is assumed to ...
Height of Capillary rise = 
Height of Capillary rise given by Hazen:
C = 0.435 cm2
Height of Capillary rise given by Hazen:
C = 0.435 cm2
Most Upvoted Answer
For a capillary rise in a soil mass, void size of which is assumed to ...
MN/m and the contact angle is 30 degrees. The soil particle size distribution curve is given below:
Diameter (mm) | % Finer
--- | ---
4.75 | 100
2.36 | 85
1.18 | 60
0.6 | 30
0.3 | 10
0.15 | 3
0.075 | 0.5
Effective size (D10) can be calculated from the particle size distribution curve using the following formula:
D10 = Σ (diameter × % finer) / 100
D10 = (4.75 × 100 + 2.36 × 85 + 1.18 × 60 + 0.6 × 30 + 0.3 × 10 + 0.15 × 3 + 0.075 × 0.5) / 100
D10 = 1.66 mm
Void size can be calculated as 20% of D10:
Void size = 0.2 × D10
Void size = 0.2 × 1.66
Void size = 0.332 mm
Capillary rise can be calculated using the following formula:
h = (2 × surface tension × cosθ) / (ρg × void size)
where h is the height of capillary rise, surface tension is 73 mN/m, contact angle is 30 degrees, ρ is the density of water (1000 kg/m³), g is the acceleration due to gravity (9.81 m/s²).
h = (2 × 73 × cos30) / (1000 × 9.81 × 0.332)
h = 0.029 m
Therefore, the capillary rise in the soil mass is 0.029 meters or 29 millimeters.
Diameter (mm) | % Finer
--- | ---
4.75 | 100
2.36 | 85
1.18 | 60
0.6 | 30
0.3 | 10
0.15 | 3
0.075 | 0.5
Effective size (D10) can be calculated from the particle size distribution curve using the following formula:
D10 = Σ (diameter × % finer) / 100
D10 = (4.75 × 100 + 2.36 × 85 + 1.18 × 60 + 0.6 × 30 + 0.3 × 10 + 0.15 × 3 + 0.075 × 0.5) / 100
D10 = 1.66 mm
Void size can be calculated as 20% of D10:
Void size = 0.2 × D10
Void size = 0.2 × 1.66
Void size = 0.332 mm
Capillary rise can be calculated using the following formula:
h = (2 × surface tension × cosθ) / (ρg × void size)
where h is the height of capillary rise, surface tension is 73 mN/m, contact angle is 30 degrees, ρ is the density of water (1000 kg/m³), g is the acceleration due to gravity (9.81 m/s²).
h = (2 × 73 × cos30) / (1000 × 9.81 × 0.332)
h = 0.029 m
Therefore, the capillary rise in the soil mass is 0.029 meters or 29 millimeters.
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For a capillary rise in a soil mass, void size of which is assumed to be 20% of the effective size of the particle (D10), surface tension is observed to be 73 × 10-3N/m. Calculate the value of empirical constant given by Hazen in cm2void ratio of the soil sample is 0.30. Take γw= 10 kN/m3Correct answer is between '0.43,0.45'. Can you explain this answer?
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For a capillary rise in a soil mass, void size of which is assumed to be 20% of the effective size of the particle (D10), surface tension is observed to be 73 × 10-3N/m. Calculate the value of empirical constant given by Hazen in cm2void ratio of the soil sample is 0.30. Take γw= 10 kN/m3Correct answer is between '0.43,0.45'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about For a capillary rise in a soil mass, void size of which is assumed to be 20% of the effective size of the particle (D10), surface tension is observed to be 73 × 10-3N/m. Calculate the value of empirical constant given by Hazen in cm2void ratio of the soil sample is 0.30. Take γw= 10 kN/m3Correct answer is between '0.43,0.45'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For a capillary rise in a soil mass, void size of which is assumed to be 20% of the effective size of the particle (D10), surface tension is observed to be 73 × 10-3N/m. Calculate the value of empirical constant given by Hazen in cm2void ratio of the soil sample is 0.30. Take γw= 10 kN/m3Correct answer is between '0.43,0.45'. Can you explain this answer?.
For a capillary rise in a soil mass, void size of which is assumed to be 20% of the effective size of the particle (D10), surface tension is observed to be 73 × 10-3N/m. Calculate the value of empirical constant given by Hazen in cm2void ratio of the soil sample is 0.30. Take γw= 10 kN/m3Correct answer is between '0.43,0.45'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about For a capillary rise in a soil mass, void size of which is assumed to be 20% of the effective size of the particle (D10), surface tension is observed to be 73 × 10-3N/m. Calculate the value of empirical constant given by Hazen in cm2void ratio of the soil sample is 0.30. Take γw= 10 kN/m3Correct answer is between '0.43,0.45'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For a capillary rise in a soil mass, void size of which is assumed to be 20% of the effective size of the particle (D10), surface tension is observed to be 73 × 10-3N/m. Calculate the value of empirical constant given by Hazen in cm2void ratio of the soil sample is 0.30. Take γw= 10 kN/m3Correct answer is between '0.43,0.45'. Can you explain this answer?.
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