
(a)
State whether the statement “thinner the wall, the higher is the area ratio of a sampling tube” is true or false.
(a)

Answer to Problem 12.1P
The given statement is
Explanation of Solution
Show the expression for the area ratio.
Here,
As per the formula, the area has the direct proportional relationship with the value of
The formula denotes if the wall thickness of the sampling tube is high, the area ratio will be higher and vice versa.
Hence, the given statement is
(b)
State whether the statement “samples recovered from the split-spoon samplers are highly disturbed” is true or false.
(b)

Answer to Problem 12.1P
The given statement is
Explanation of Solution
Split-spoon samplers are used to obtain representative samples suitable for the field examination of soil texture and fabric. The samples obtained by this process are highly disturbed.
Hence, the given statement is
(c)
State whether the statement “
(c)

Answer to Problem 12.1P
The given statement is
Explanation of Solution
Express the relationship between standard penetration numbers
In
Thus, the value of
Hence, the given statement is
(d)
State whether the statement “
(d)

Answer to Problem 12.1P
The given statement is
Explanation of Solution
Express the relationship between the effective overburden pressure
Here,
The value of
The value of
The value of
Hence, the given statement is
(e)
State whether the statement “vane shear test can be carried out in sands” is true or false.
(e)

Answer to Problem 12.1P
The given statement is
Explanation of Solution
The un-drained shear strength of soft clay is estimated directly by the Vane shear test. Reliable results only in medium stiff clays and soft clays are obtained from the field vane shear test.
Vane shear test is valid for only cohesive soil and it is not suitable for clays which contain sand or silt laminations in it.
Hence, the given statement is
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Chapter 12 Solutions
Fundamentals of Geotechnical Engineering (MindTap Course List)
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- The benchmark is 00.00. The backsights are 6.00, 9.32 and 13.75 and 14.00 The foresights are 6.00, 9.00 and 3.22. What is the height of the instrument? H.I. - 100.00 - 124.85 - 43.07- 24.85arrow_forwardThe benchmark is 100.00. The backsights are 4.00, 6.32 and 12.75. The foresights are 6.00, 9.00 and 3.22. What is the elevation of the point? - 95.14 - 123.08 - 104.85 - 81.78arrow_forwardDetermine the stiffness matirx of the entire truss in Global co-ordinate system, clearly indicate the degrees of freedom numbers in the stiffness matrix.arrow_forward
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