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The topmost layer is loose, clean sand, 1.5 meter thick. Its vertical permeability can be estimated using Hazen’s formula with C = 1.5 and D10 = 0.016mm. Its horizontal permeability is known to be 350% of the Kv. Below the sand stratum is a layer of marl, 3.5 meters thick, with a kv = Kh = 10-4 m/s. what is the Equivalent Horizontal permeability for the upper 5 m in cm/sec?
  • a)
    1.102 x 10-4
  • b)
    2.102 x 10-4
  • c)
    1.002 x 10-4
  • d)
    2.002 x 10-4
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The topmost layer is loose, clean sand, 1.5 meter thick. Its vertical...
Given that the vertical permeability in sand layer can be estimated using Allen- Hazen’s formula
Kv = C (D10)2
C = 1.5 and D10 = 0.016mm
Kv = 0.0384 x 10-3 cm/sec
Horizontal permeability for sandy layer is 350% of Kv
i.e. Kh = 3.5 (0.0384 x10-3 ) = 0.134 x10-3 cm/sec
Kh(equ) =(K1H1+K2H2)/(H1+H2)
Here K1 = 0.134 x10-3 cm/sec; H1 = 1.5m
K2 = 10-4 cm/sec; H2 = 3.5m
On substituting, we get Kh(equ) = 1.102 x 10-4 cm/sec
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The topmost layer is loose, clean sand, 1.5 meter thick. Its vertical permeability can be estimated using Hazen’s formula with C = 1.5 and D10 = 0.016mm. Its horizontal permeability is known to be 350% of the Kv. Below the sand stratum is a layer of marl, 3.5 meters thick, with a kv = Kh = 10-4 m/s. what is the Equivalent Horizontal permeability for the upper 5 m in cm/sec?a)1.102 x 10-4b)2.102 x 10-4c)1.002 x 10-4d)2.002 x 10-4Correct answer is option 'A'. Can you explain this answer?
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The topmost layer is loose, clean sand, 1.5 meter thick. Its vertical permeability can be estimated using Hazen’s formula with C = 1.5 and D10 = 0.016mm. Its horizontal permeability is known to be 350% of the Kv. Below the sand stratum is a layer of marl, 3.5 meters thick, with a kv = Kh = 10-4 m/s. what is the Equivalent Horizontal permeability for the upper 5 m in cm/sec?a)1.102 x 10-4b)2.102 x 10-4c)1.002 x 10-4d)2.002 x 10-4Correct answer is option 'A'. Can you explain this answer? for GATE 2024 is part of GATE preparation. The Question and answers have been prepared according to the GATE exam syllabus. Information about The topmost layer is loose, clean sand, 1.5 meter thick. Its vertical permeability can be estimated using Hazen’s formula with C = 1.5 and D10 = 0.016mm. Its horizontal permeability is known to be 350% of the Kv. Below the sand stratum is a layer of marl, 3.5 meters thick, with a kv = Kh = 10-4 m/s. what is the Equivalent Horizontal permeability for the upper 5 m in cm/sec?a)1.102 x 10-4b)2.102 x 10-4c)1.002 x 10-4d)2.002 x 10-4Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for GATE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The topmost layer is loose, clean sand, 1.5 meter thick. Its vertical permeability can be estimated using Hazen’s formula with C = 1.5 and D10 = 0.016mm. Its horizontal permeability is known to be 350% of the Kv. Below the sand stratum is a layer of marl, 3.5 meters thick, with a kv = Kh = 10-4 m/s. what is the Equivalent Horizontal permeability for the upper 5 m in cm/sec?a)1.102 x 10-4b)2.102 x 10-4c)1.002 x 10-4d)2.002 x 10-4Correct answer is option 'A'. Can you explain this answer?.
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