The maximum pressure which a soil can carry without shear failure is
A. safe bearing capacity
B. net safe bearing capacity
C. net ultimate bearing capacity
D. ultimate bearing capacity
If the water content of a fully saturate soil mass is 100%, then the voids will be
A. less than specific gravity of soil
B. equal to specific gravity of soil
C. grater than specific gravity of soil
D. independent of specific gravity of soil
Compressibility of clayey soils will be
A. equal to that of sandy soil
B. greater than sandy soil
C. less than clayey soil
D. cannot say
The test that will be preferred for testing of shear strength of saturated clay is
A. direct shear test
B. vane shear test
C. triaxial test
D. unconfined compression test
Compressional waves and shear waves are which type of seismic waves?
A. Body waves
B. Surface waves
C. Rayleigh waves
D. Love waves
Which of the following is a component of shield for tunneling?
A. Liner plate
B. Trench jack
C. Stiffener
D. Cutting edge
Piles are usually driven by
A. diesel operated hammer
B. drop hammer
C. single acting steam hammer
D. all of the above
Percentage voids has value
A. in between 0 t0 100
B. less than 0
C. greater than 0
D. none of above
The plastic limit and liquid limit exist in
A. sandy soil
B. silty soil
C. gravel soil
D. clay soil
S wave is responsible for the movement which is
A. forth and back
B. side to side
C. oscillation
D. all sides
Which of the following lining is suitable for shield driven tunnels particulary in sub aqueous region?
A. concrete lining
B. stone lining
C. brick lining
D. cast iron lining
Which of the following classes represent earthquakes with magnitudes between 4 and 4.9
A. Moderate
B. Strong
C. Light
D. Very strong
Which of the following is considered to be an advantage of the heading and benching method of tunnel construction?
A. It is suitable for construction in unstable rocks
B. In this method, it is easy to install timber support
C. Tunneling can be continuous and the work can be expedited
D. In case of excessive water, it is easy to take correct steps
If the temperature at the time of test is more than that of callibration of the hydrometer, the hydrometer reading will be
A. same
B. more
C. less
D. none of above
The shearing strength of a cohesionless soil depends upon
A. dry density
B. rate of loading
C. confining pressure
D. nature of loading
The property of soil which is of great importance in finding settlement of structure is
A. permeability
B. shear strength
C. consolidation
D. compressibility
Total lateral earth pressure is proportional to
A. depth of soil
B. square of depth of soil
C. amgle of internal friction of soil
D. none of above
The water content of a soil at which the soil volume becomes constant is
A. plastic limit
B. liquid limit
C. shrinkage limit
D. solid limit
Which of the following methid is quickest to find the water content of soil
A. oven dry method
B. alcohol method
C. clacium carbide method
D. sand bath method
circular section of tunnel is not suitable for
A. carrying water
B. non cohesive soils
C. tunnels driven by shield method
D. placement of concrete
Which of the following plate is the most active tectonic plate?
A. Pacific plate
B. Eurasian plate
C. Indo-Australian plate
D. Soth african plate
Uniformity coefficiient of well graded soil is
A. 1
B. less than 2
C. 2
D. greater than 2
Black cotton soil is not suitable for foundation because of its
A. black colour
B. low bearing capacity
C. cohesive particles
D. swelling and shrinkage nature
The void ratio of a soil is defined as the ratio of
A. volume of voids to total volume
B. volume of voids to volume of solids
C. volume of solids to total volume
D. volume of water to volume of voids
The degree of saturation of a completely dry soil sample is
A. 100%
B. 50%
C. 0%
D. cannot be determined
Among the following soil types, which generally has the highest coefficient of permeability?
A. Clay
B. Silt
C. Sand
D. Gravel
The Richter scale is a measure of the ______ of an earthquake.
A. intensity
B. magnitude
C. duration
D. focal depth
The shape generally preferred for highway/railway tunnels driven through hard, self-supporting rock is
A. circular
B. horseshoe
C. rectangular
D. elliptical
The Standard Penetration Test (SPT) is primarily used to estimate the
A. permeability of soil
B. relative density and bearing capacity of soil
C. compaction characteristics of soil
D. Atterberg limits of soil
An undisturbed sample of soil has a volume of 100 cm³ and weight 180 gram. The soil sample when dried for 24 hours in an oven, weights 160 gram. The dry density of the soil is:
A. 1.4
B. 1.5
C. 1.6
D. 1.7
The ratio of plasticity index to clay fraction is known as:
A. flow index
B. activity number
C. toughness index
D. liquidity index
The most suitable soil for compressed air tunneling is
A. silt
B. clay
C. sand
D. gravel
The intensity scale of earthquake is called
A. Mercali Scale
B. Richter scale
C. Number scale
D. None of above
Dry density of soil is equal to
A. mass of solid to the volume of solid
B. mass of solid to the toal volume of soil
C. density of soil in the dried condition
D. none of above
In stokes' law the terminal velocity of particle is
A. proportional to the radius of the particle
B. proportional to the square of the radius of particle
C. inversely proportional to the square of the radius of particle
D. none of above
Total lateral earth pressure is proportional to:
A. depth of soil
B. square of depth of soil
C. angle of internal friction of soil
D. none of the above
Convergent plate boundaries are also known as
A. subduction plate boundary
B. Constructive plate boundary
C. tranform plate boundary
D. conservative plate boundary
If D is the diameter of the tunnel the empirical formula to calculate the thickness of the lining is given by
A. 42 D
B. 82 D
Note: The supplied formula options appear incomplete or corrupted; verify the original before relying on them.
C. 104 D
D. 124 D
Which of the following is not useful for engineering purpose as proposed by atterberg?
A. Plastic limit
B. soild limit
C. liquid linit
D. shrinkage limit
In illite mineral, the bond between the structural unit is
A. Hydrogen bond
B. potassium bond
C. water moilecules bond
D. covalent bond
The angle of internal friction is maximum for
A. angular grained loose sand
B. angular grained dense sand
C. round grained dense sand
D. round granied loose sand
The water content at which a soil changes from the plastic state to the liquid state is called the:
A. shrinkage limit
B. plastic limit
C. liquid limit
D. flow index
The field test commonly used to determine the in-situ bearing capacity of soil at shallow depth is the:
A. plate load test
B. consolidation test
C. triaxial compression test
D. hydrometer test
The specific gravity of most soil solids generally lies within the range of:
A. 1.0 - 1.5
B. 2.65 - 2.75
C. 3.5 - 4.0
D. 5.0 - 6.0
According to Terzaghi's theory, the long-term settlement of a saturated clay layer under sustained load is mainly due to:
A. instantaneous elastic compression
B. consolidation caused by expulsion of pore water
C. creep of soil grains only
D. shear failure of the soil
The point on the earth's surface located directly above the focus of an earthquake is called the:
A. epicenter
B. hypocenter
C. seismic zone
D. fault line
The tunneling method most suitable for soft ground where advance support is required ahead of excavation is the:
A. shield method
B. full-face method
C. heading and benching method
D. drill and blast method
During seepage through a soil, direction of seepage is always
A. Parallel to equipotential lines
B. Perpendicular to equipotential lines
C. Perpendicular to stream lines
D. None of above
Relative density of soil is a measure of
A. The amount of clay present in the soil
B. The water content of the soil
C. Compactness of soil structure
D. acidity of soil
The flat surface along which a rock layer has been tilted or folded is called.......
A. Cleavage
B. fault
C. dip
Note: The wording and supplied key need review: dip is the angle or direction of inclination, not a flat surface.
D. strike
To obtain grain size distribution, hydrometer analysis is appropriate for.......
A. Peats
B. Sands and gravels
C. Silts and clays
D. all of above
The effective size of soil is...
A. D10
B. D20
C. D50
D. D60
The dry density of soil is 1.5g / c * m ^ 1 If the saturation water content is 50%, then its saturated density and submerged density will respectively be…
A. 1.5g / c *m ^ 3 and 1g / c* m ^ 3
B. 2.25g / c *m ^ 3 and 1.25 g / c* m ^ 3
Note: The units in the source appear corrupted; the intended unit may be g/cm³.
C. 2 g / c *m ^ 3 and 1g / c* m ^ 3
D. 2.5g / c *m ^ 3 and 1.5 g / c* m ^ 3
An 'overconsolidated' clay is one that, in its geological history, has been subjected to:
A. a lower effective stress than the present overburden stress
B. purely elastic compression only
C. no stress history at all
D. a higher effective stress in the past than the current overburden stress
A commonly used ground-improvement technique for increasing the bearing capacity of loose sandy soils in-situ is:
A. pre-loading exclusively
B. vibro-compaction
C. lime stabilization exclusively
D. chemical grouting exclusively
The 'active earth pressure' condition develops behind a retaining wall when the wall:
A. remains perfectly rigid with no movement
B. is completely removed
C. moves slightly away from the backfill
D. moves slightly into the backfill
'Piping failure' occurring in an earth dam or beneath a hydraulic structure is caused by:
A. overtopping of the structure
B. shear failure of the downstream slope
C. excessive uniform settlement
D. progressive internal erosion of soil due to seepage
A geological 'fault' is defined as a fracture in rock:
A. along which relative displacement of the rock masses has occurred
B. that represents a simple fold in rock strata
C. that represents only a zone of weathered rock
D. along which no relative displacement has occurred
The 'stand-up time' of a tunnel excavation refers to the time for which:
A. ventilation fans must run continuously
B. an unsupported excavation remains stable before support becomes necessary
C. concrete lining takes to fully cure
D. workers may safely rest inside the tunnel
A narrow gradation of soil is called
A. gap gradation
B. uniform gradation
C. rich gradation
D. open gradation
Textural classification is best suited for
A. clay soil
B. clayey sand
C. coarse grained soil
D. sandy clay
The soil water which is impossible to remove from soil is
A. structural water
B. capillary water
C. free water
D. pore water
Circular section of tunnel is not suitable for
A. carrying water
B. non cohesive soil
C. tunnel driven shield method
D. placement of concrete lining
Approximately what percentage of earthquake occur at plate boundary?
A. 0.1
B. 0.3
C. 0.6
D. 0.9
The maximum water content at which a reduction in water content does not cause a decrease in volume of soil mass is known as
A. liquid limit
B. plastic limit
C. shrinkage limit
D. permeability limit