Laboratory and Field Tests
Laboratory and Field Tests
Solved Example: 9072-01
In order to obtain a good quality of undisturbed soil the area ratio of the sampling tube should be: (TN TRB Civil 2012)
A. 8%
B. 16%
C. 24%
D. 32%
Correct Answer: A
Solved Example: 9072-02
Shelby tube is one of the most widely used devices for: (MP Sub Engg Civil Sep 2018 Shift II)
A. Drilling rocks and cobbles
B. Measuring effective stress
C. Wash borings
D. Collecting undisturbed soil samples
Correct Answer: D
Solved Example: 9072-03
The type of soil sample collected using wash boring technique is: (JKSSB JE CE Shift II Oct 2021)
A. Representative
B. Zero-representative
C. Undisturbed
D. Zero disturbed
Correct Answer: B
Solved Example: 9072-04
Auger boring is suited for which of the following exploratory strata? (Gujarat Engg Service 2019 Civil Part I)
A. Partly saturated sands, silts and medium to stiff cohesive soils
B. All types of soils and rocks except fissured rocks
C. Practically all types of soils except hard and cemented soil or rock
D. All types of soils and rocks except loose sands and soft sticky clays
Correct Answer: A
Solved Example: 9072-05
Undisturbed soil samples are obtained by: (UKPSC AE Civil 2013 Paper I)
A. Thick-walled samplers
B. Direct excavations
C. Thin-walled samplers
D. Augers
Correct Answer: C
Solved Example: 9072-06
What should be the minimum depth of exploration below an isolated footing? (HPPSC AE Civil 2016)
A. Equal to width of footing
B. One and half times the width of footing
C. Three times the width of footing
D. Three times the depth of footing
Correct Answer: B
Solved Example: 9072-07
The degree of disturbance of the sample collected by the sampler is expressed by a term called the 'area ratio'. If the outer diameter and inner diameter of the sampler are D$_o$ and D$_i$ respectively, the area ratio is given by: (GATE CE 2014 Set I)
A. $\dfrac{{D_o^2 - D_i^2}}{{D_i^2}}$
B. $\dfrac{{D_o^2 - D_i^2}}{{D_i^2}}$
C. $\dfrac{{D_o^2 - D_i^2}}{{D_o^2}}$
D. $\dfrac{{D_i^2 - D_o^2}}{{D_o^2}}$
Correct Answer: A
Solved Example: 9072-08
For sampling saturated sands and other soft and wet soils satisfactorily, the most suitable soil sampler is: (BPSC AE Paper V Civil 2019)
A. Open drive thin-walled sampler
B. Standard split-spoon sampler
C. Stationary piston sampler
D. Rotary sampler
Correct Answer: A