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Recent questions tagged geotechnicalengineering
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GATE2020CE17
In a twodimensional stress analysis, the state of stress at a point $P$ is $\begin{bmatrix} \sigma \end{bmatrix} = \begin{bmatrix}\sigma_{xx} &\tau_{xy} \\ \tau_{xy} &\sigma_{yy} \end{bmatrix}$ The necessary and sufficient condition for existence of the state of pure shear at ... $\tau_{xy}=0$ $\sigma_{xx}+\sigma_{yy}=0$ $(\sigma_{xx}\sigma_{yy})^2+4\tau^2_{xy}=0$
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Feb 28
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gate2020ce1
matrix
twodimensionalflow
geotechnicalengineering
0
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0
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2
GATE2020CE18
During the process of hydration of cement, due to increase in Dicalcium Silicate $(C_2S)$ content in cement clinker, the heat of hydration increases decreases initially decreases and then increases does not change
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Feb 28
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gate2020ce1
geotechnicalengineering
hydration
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0
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3
GATE2020CE19
The Los Angeles test for stone aggregates is used to examine abrasion resistance crushing strength soundness specific gravity
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Feb 28
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gate2020ce1
foundationengineering
geotechnicalengineering
0
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0
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4
GATE2020CE110
Which one of the following statements is. $\textbf{NOT}$ correct? A clay deposit with a liquidity index greater than unity is in a state of plastic consistency. The cohesion of normally consolidated clay is zero when triaxial test is conducted ... 's equation predicts higher value of vertical stress at a point directly beneath the load as compared to Westergaards's equation.
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gate2020ce1
geotechnicalengineering
0
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5
GATE2020CE111
In a soil investigation work at a site, Standard Penetration Test (SPT) was conducted at every $1.5\:m$ interval upto $30\: m$ depth. At $3\:m$ depth, the observed number of hammer blows for three successive $150\:mm$ penetrations were $8,6$ and $9$,respectively. The SPT Nvalue at $3\:m$ depth, is $23$ $17$ $15$ $14$
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Feb 28
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gate2020ce1
soilmechanics
geotechnicalengineering
spt
0
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0
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6
GATE2020CE122
In a drained triaxial compression test, a sample of sand fails at deviator stress of $150\:kPa$ under confining pressure of $50\:kPa$. The angle of internal friction (in degree, round off to the nearest integer) of the sample, is ______
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Feb 28
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gate2020ce1
soilmechanics
geotechnicalengineering
characteristicsofsand
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0
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7
GATE2020CE123
A fully submerged infinite sandy slope has an inclination of $30^\circ{}$ with the horizontal. The saturated unit weight and effective angle of internal friction of sand are $18\:kN/m^3$ and $38^\circ{}$ ... is parallel to the slope. Against shear failure of the slope, the factor of safety (round off to two decimal places) is ______.
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Feb 28
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2.7k
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gate2020ce1
foundationengineering
geotechnicalengineering
stabilityofslopes
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0
answers
8
GATE2020CE128
Distributed load(s) of $50\:kN/m$ may occupy position(s) (either continuously or in patches) on the girder $\textbf{PQRST}$ as shown in the figure (not drawn to the scale) The maximum negative (hogging) bending moment (in $kN.m$) that occurs at point $\textbf{R}$, is $22.50$ $56.25$ $93.75$ $150.00$
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Feb 28
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2.7k
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gate2020ce1
geotechnicalengineering
0
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0
answers
9
GATE2020CE134
The total stress paths corresponding to different loading conditions, for a soil specimen under the isotropically consolidated stress state (O), are shown below ... $OPIII, OQII, ORI, OSIV$ $OPI, OQIII, ORII, OSIV$
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Feb 28
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2.7k
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gate2020ce1
soilmechanics
geotechnicalengineering
stresspaths
0
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0
answers
10
GATE2020CE135
The soil profile at a site up to a depth of $10\:m$ is shown in the figure ( not drawn to the scale). The soil is preloaded with a uniform surcharge (q) of $70\:kN/m^2$ at the ground level. The water table is at a depth of $3\:m$ below ground level. The soil unit weight ... $kPa$) at points $P$ and $Q$, respectively, are $124$ and $204$ $36$ and $ 90$ $36$ and $126$ $54$ and $95$
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Feb 28
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2.7k
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gate2020ce1
foundationengineering
geotechnicalengineering
watertable
0
votes
0
answers
11
GATE2020CE146
A vertical retaining wall of $5\:m$ height has to support soil having unit weight of $18\:kN/m^3$ , effective cohesion of $12\:kN/m^2$, and effective friction angle of $30^\circ{}$ . As per Rankine's earth pressure theory and assuming that a ... has occurred, the lateral active thrust on the wall per meter length ( in $kN/m$ , round off to two decimal places), is __________
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Feb 28
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2.7k
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gate2020ce1
foundationengineering
geotechnicalengineering
rankine'stheory
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0
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12
GATE2020CE147
Water flows in the upward direction in a tank through $2.5\;m$ thick sand layer as shown in the figure. The void ratio and specific gravity of sand are $0.58$ and $2.7$, respectively. The sand is fully saturated. Unit weight of water is $10\:kN/m^3$. The ... (in $kPa$, round off to two decimal places) at point $\textbf{A}$, located $1\:m$ above the base of tank, is ______.
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Feb 28
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jothee
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2.7k
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gate2020ce1
geotechnicalengineering
soilmechanics
0
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0
answers
13
GATE2020CE148
A $10\:m$ thick clay layer is resting over a $3\:m$ thick sand layer and is submerged. A fill of $2\:m$ thick sand with unit weight of $20\:kN/m^3$ is placed above the clay layer to accelerate the rate of consolidation of the clay layer. ... settlement (in $mm$, round off to two decimal places) of the clay layer, $10$ years after the construction of the fill, is ______.
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Feb 28
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jothee
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2.7k
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gate2020ce1
foundationengineering
geotechnicalengineering
settlementanalysisinclays
0
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0
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14
GATE2020CE150
In a homogenous unconfined aquifer of area $3.00\:km^2$, the water table was at an elevation of $102.00\:m$. After a natural recharge of volume $0.90$ million cubic meter $(Mm^3)$, the water table rose to $103.20\:m$. After this recharge,ground ... $Mm^3$ and round off to two decimal places), is ______.
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Feb 28
in
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jothee
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2.7k
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gate2020ce1
watertable
foundationengineering
geotechnicalengineering
0
votes
0
answers
15
GATE2020CE153
A gaseous chemical has a concentration of $41.6\:\mu mol/m^3$ in air at $1$ atm pressure and temperature $293\:K$. The universal gas constant $R$ is $82.05\times10^{6}\;(m^3\:atm)/(mol\:K)$. Assuming that ideal gas law is valid , the concentration of the gaseous chemical (in ppm, round off to one decimal place), is ______.
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Feb 28
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2.7k
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gate2020ce1
soilmechanics
geotechnicalengineering
upliftpressure
temperature
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0
answers
16
GATE2020 CE26
The state of stress represented by Mohr’s circle shown in the figure is uniaxial tension biaxial tension of equal magnitude hydrostatic stress pure shear
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Feb 13
in
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jothee
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2.7k
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gate2020ce2
soilmechanics
geotechnicalengineering
mohr'scircle
stresspaths
0
votes
0
answers
17
GATE2020 CE210
Soil deposit formed due to transportation by wind is termed as aeolian deposit alluvial deposit estuarine deposit lacustrine deposit
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Feb 13
in
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jothee
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2.7k
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gate2020ce2
soilmechanics
geotechnicalengineering
soilstructureandfabric
0
votes
0
answers
18
GATE2020 CE211
A sample of $500\:g$ dry sand, when poured into a $2$ litre capacity cylinder which is partially filled with water, displaces $188\:cm^3$ of water. The density of water is $1\:g/cm^3.$ The specific gravity of the sand is $2.72$ $2.66$ $2.55$ $2.52$
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Feb 13
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gate2020ce2
geotechnicalengineering
soilmechanics
0
votes
0
answers
19
GATE2020 CE222
A soil has dry unit weight of $15.5\: kN/m^3$, specific gravity of $2.65$ and degree of saturation of $72\: %.$ Considering the unit weight of water as $10\: kN/m^3$, the water content of the soil (in $\%$ round off to two decimal places) is __________.
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Feb 13
in
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2.7k
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gate2020ce2
numericalanswers
soilmechanics
geotechnicalengineering
0
votes
0
answers
20
GATE2020 CE223
A onedimensional consolidation test is carried out on a standard $19\: mm$ thick clay sample. The oedometer’s deflection gauge indicates a reading of $2.1\: mm$, just before removal of the load, without allowing any swelling. The void ratio is $0.62$ at this stage. The initial void ratio (round off to two decimal places) of the standard specimen is __________.
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gate2020ce2
numericalanswers
soilmechanics
geotechnicalengineering
onedimensionalconsolidation
0
votes
0
answers
21
GATE2020 CE225
Two identically sized primary settling tanks receive water for $\text{TypeI}$ settling (discrete particles in dilute suspension) under laminar flow conditions. The Surface Overflow Rate (SOR) maintained in the two tanks are $30\ m^3/m^2.d$ and $15\: m^3/m^2.d$. ... $d_{15}$ respectively. The ratio, $\large \dfrac{d_{30}}{d_{15}}$ (round off to two decimal places), is ________.
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Feb 13
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2.7k
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gate2020ce2
numericalanswers
geotechnicalengineering
0
votes
0
answers
22
GATE2020 CE234
Permeability tests were carried out on the samples collected from two different layers as shown in the figure (not drawn to the scale). The relevant horizontal $(k_h)$ and vertical $(k_v)$ coefficients of permeability are indicated for each layer. The ratio of the equivalent horizontal to vertical coefficients of permeability, is $37.29$ $80.20$ $68.25$ $0.03$
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Feb 13
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2.7k
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gate2020ce2
coefficientofpermeability
soilmechanics
geotechnicalengineering
0
votes
0
answers
23
GATE2020 CE235
A $10\ m$ high slope of dry clay soil $\text{( unit weight}\: = 20 kN/m^3$), with a slope angle of $45^{\circ}$and the circular slip surface, is shown in the figure (not drawn to the scale). The weight of the slip wedge is denoted by $W$. The undrained unit cohesion $(c_u)$ is $60\: kPa$. The factor of safety of the slope against slip failure, is $1.84$ $1.57$ $0.58$ $1.67$
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Feb 13
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jothee
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2.7k
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gate2020ce2
geotechnicalengineering
characteristicsofclay
soilmechanics
0
votes
0
answers
24
GATE2020 CE246
A footing of size $2\: m \times 2\: m$ transferring a pressure of $200\: kN/m^2$, is place at a depth of $1.5\: m$ below the ground as shown in the figure (not drawn to the scale ). The clay stratum is normally consolidated. The clay has ... $\gamma_w= 10\: kN/m^3$, the primary consolidation settlement in (in mm, round off to two decimal places) of the clay stratum is ________.
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gate2020ce2
numericalanswers
foundationengineering
geotechnicalengineering
settlementanalysisinclays
0
votes
0
answers
25
GATE2020 CE247
A constanthead permeability test was conducted on a soil specimen under a hydraulic gradient of $2.5$. The soil specimen has specific gravity of $2.65$ and saturated water content of $20\%.$ If the coefficient of permeability of the soil is $0.1\: cm/s$, the seepage velocity (in $cm/s,$ round off to two decimal places) through the soil specimen is ________.
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Feb 13
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2.7k
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gate2020ce2
numericalanswers
soilmechanics
geotechnicalengineering
coefficientofpermeability
0
votes
0
answers
26
GATE2020 CE248
A $5\: m$ high vertical wall has a saturated clay backfill. The saturated unit weight and cohesion of clay are $18\: kN/m^3$ and $20\: kPa$, respectively. The angle of internal friction of clay is zero. In order to prevent development of tension zone, the ... tension zone, the minimum height (in $m$, round off to one decimal place) by which the wall has to be raised, is ________.
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gate2020ce2
numericalanswers
soilmechanics
geotechnicalengineering
0
votes
0
answers
27
GATE2017 CE24
Let $G$ be the specific gravity of soil solids, $w$ the water content in the soil sample, $\gamma_w$ the unit weight of water, and $\gamma_d$ ... $\gamma_d = \dfrac{Gw}{1 + \gamma_w} \\$ $\gamma_d = \dfrac{Gw}{1  \gamma_w}$
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Aug 7, 2019
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gatecse
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3.9k
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gate2017ce2
soilmechanics
geotechnicalengineering
0
votes
0
answers
28
GATE2017 CE217
The plate load test was conducted on a clayey strata by using a plate of $0.3 \: m \times 0.3 \: m$ dimensions, and the ultimate load per unit area for the plate for found to be $180$ kPa. The ultimate bearing capacity (in kPa) of a $2$ m wide square footing would be $27$ $180$ $1200$ $2000$
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gatecse
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gate2017ce2
foundationengineering
geotechnicalengineering
plateloadtest
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0
answers
29
GATE2017 CE221
A sheet pile has an embedment depth of $12$ m in a homogeneous soil stratum. The coefficient of permeability of soil is $10^{6} m/s$. Difference in the water levels between the two sides of the sheet pile is $4$ m. The flow net is constructed with ... of equipotential lines. The quantity of seepage (in $cm^3/s$ per m, up to one decimal place) under the sheet pile is _________
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gate2017ce2
numericalanswers
foundationengineering
geotechnicalengineering
typesofpiles
0
votes
0
answers
30
GATE2017 CE224
The infiltration capacity of a soil follows the Horton's exponential model, $f=c_1+c_2e^{kt}$. During an experiment, the initial infiltration capacity was observed to be $200$ mm/h. After a long time, the infiltration capacity was reduced $25$ mm/h. If the filtration capacity ... $k$ (in $h^{1}$, up to two decimal places) is ________
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gatecse
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gate2017ce2
numericalanswers
soilmechanics
geotechnicalengineering
0
votes
0
answers
31
GATE2017 CE234
Two identical concrete piles having the plan dimensions $50 \: cm \times 50 \: cm$ are driven into a homogeneous sandy layers as shown in the figures. Consider the bearing capacity factor $N_q$ for $\phi = 30 ^{\circ}$ as $24$. If $Q_{P1}$ and $Q_{P2}$ represent the ultimate point ... by about $100 \%$ $Q_{P1} > Q_{P2}$ by about $5 \%$ $Q_{P1} < Q_{P2}$ by about $5 \%$
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3.9k
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gate2017ce2
foundationengineering
geotechnicalengineering
bearingcapacity
typesofpiles
0
votes
0
answers
32
GATE2017 CE235
Following are the statements related to the stress paths in a triaxial testing of soils: If $\sigma_1 = \sigma_3$, the stress point lies at the origin of the $pq$ plot If $\sigma_1 = \sigma_3$, the stress point lies on the $p$axis of the $pq$ plot If $\sigma_1 > \sigma_3$, ...  True P  True; Q  False; R  True P  False; Q  True; R  False P  True; Q  False; R  False
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gate2017ce2
soilmechanics
geotechnicalengineering
stresspaths
0
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0
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33
GATE2017 CE237
For the construction of a highway, a cut is to be made as shown in the figure. The soil exhibits $c'=20$ kPa, $\phi'=18^{\circ}$, and the undrained shear strength $=80$ kPa. The unit weight of water is $9.81 kN/m^3$. The unit weights of the soil above and below the ground water ... conditions, respectively, would be $1.6$ and $0.9$ $0.9$ and $1.6$ $0.6$ and $1.2$ $1.2$ and $0.6$
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gate2017ce2
transportationengineering
shearstrength
soilmechanics
geotechnicalengineering
0
votes
0
answers
34
GATE2017 CE241
Two plates od $8$ mm thickness each are connected by a fillet weld of $6$ mm thickness as shown in the figure. The permissible stresses in the plate and the weld are $150$ MPa and $110$ MPa, respectively. Assuming the length of the weld shown in the figure to be the effective length, the permissible load $P$ (in kN) is ______
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gate2017ce2
numericalanswers
foundationengineering
geotechnicalengineering
plateloadtest
0
votes
0
answers
35
GATE2017 CE244
Consider a square shaped area ABCD on the ground with its centre at M as shown in the figure. Four concentrated vertical loads of $P=5000$ kN are applied on this area, one at each corner. The vertical stress increment (in kPa, up to one decimal place) due to these loads according to the Boussinesq’s equation, at a point $5$ m right below M, is _______
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gate2017ce2
numericalanswers
boussinesq'stheory
foundationengineering
geotechnicalengineering
0
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0
answers
36
GATE2019 CE1: 16
A retaining wall of height $H$ with smooth vertical backface supports a backfill inclined at an angle $\beta$ with the horizontal. The backfill consists of cohesionless soil having angle of internal friction $\phi$. If the active lateral thrust acting on the wall is $P_a$ ... $P_a$ acts at a height $H/3$ from the base of the wall and at an angle $\phi$ with the horizontal
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Feb 14, 2019
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gate2019ce1
soilmechanics
geotechnicalengineering
0
votes
0
answers
37
GATE2019 CE1: 17
In a soil specimen, the total stress, effective stress, hydraulic gradient and critical hydraulic gradient are $\sigma, \: \sigma’$, $i$ and $i_c$, respectively. For initiation of quicksand condition, which one of the following statements is TRUE? $\sigma’ \neq 0$ and $i=i_c$ $\sigma’ = 0$ and $i=i_c$ $\sigma’ \neq 0$ and $i \neq i_c$ $\sigma = 0$ and $i=i_c$
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gate2019ce1
soilmechanics
geotechnicalengineering
quicksandcondition
0
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0
answers
38
GATE2019 CE1: 20
A completely mixed dilute suspension of sand particles having diameters $0.25, \: 0.35, \: 0.40, \: 0.45$ and $0.50 \: mm$ are filled in a transparent glass column of diameter $10 \: cm$ and height $2.50 \: m$. The suspension is allowed to ... $0.45$ and $0.50 \: mm$ from the suspension is _________
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gate2019ce1
numericalanswers
geotechnicalengineering
foundationengineering
settlementanalysisinsands
0
votes
0
answers
39
GATE2019 CE1: 24
A soil has specific gravity of its solids equal to $2.65$. The mass density of water is $1000 \: kg/m^3$. Considering zero air voids and $10 \%$ moisture content of the soil sample, the dry density (in $kg /m^3$, round off to $1$ decimal place) would be ______
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gate2019ce1
numericalanswers
soilmechanics
geotechnicalengineering
0
votes
0
answers
40
GATE2019 CE1: 29
For the following statements: P  The lateral stress in the soil while being tested in an oedometer is always atrest. Q  For a perfectly rigid strip footing at deeper depths in a sand deposit, the vertical normal contact stress at the footing edge is greater than that at its centre. R  ... FALSE; Q  FALSE; R  TRUE P  TRUE; Q  TRUE; R  FALSE P  FALSE; Q  FALSE; R  FALSE
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gate2019ce1
soilmechanics
geotechnicalengineering
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