問題一覧
1
if we increase the compwcion energy, what will happen to the max. dry density ( MDD )?
The Dry unit weight of soil will increase
2
The ground water table is located at a certain depth below the ground surface. This will cause an updward seepage. What would be the resulting effective stress at a certain point below the ground water table due to upward seepage
This will cause the decrease of effectiv stress at that point
3
The surface tension phenomenon is none of the reason that small insects can walk on water. determine the value of surface tension at normal room temperature
0.64 N/m
4
Determine the force why small insects can walk on the water
Surface Tension
5
It is soil whose present effective over burn pressure is less than that which the soil experienced in the past.
Over Consolidated
6
What happens when there is a lowering of water tabe?
There is a decrease of lateral pressure
7
What is the ratio of the weight of water to the weight of solids in a given volume of soil
Water Content
8
What is the ratio if the volume of water to the volume of voids?
Degree of Saturation
9
What is the ratio of the volume of voids to the volume total
Porosity
10
What is the ratio of the volume of voids to the volume of solids?
Void Ratio
11
The Cohesion Strength of Cohesive Soil is a compression strenth, C = k • qu. Where k is the equal to
.50
12
According to the USCS soil classification of a soild particles whose size is greater than 75 mm is called?
Cobbles
13
Section 302.4.5 of the NSCP (C101-10) provides that the slope of fill surface shall be no steeper than is safe for its intended use and shall not be steeper than ________.
1:2
14
Soil derifes its strength from its capacity to resist?
Shear
15
Which of the following is not a component of the soil mass
None in the List
16
The component of the Shear strength of a rock or soil that interparticle friction is called
Cohesion
17
In accordance with the USCS which are considered coarse grained if the passing thru no. 200 sieve is less than
50
18
One of the following foundation condition does not affect foundation settlement
None of the other choices
19
A process which water-saturated soil sediment temporarily loss strength and acts as a fluid
Liquefaction
20
A body placed ina liquid is buoyed up by a force equal to the weight if the displaced liquid. This principle of buoyancy was attributed to.
Archimedes
21
If with steady flow in any length or reach of stream, the average velocity at every cross-section is the same in that reach, the flow is said to be
Uniform
22
A ship is floating in seatwater is stable if the metacentric height is:
Above the Center of the Gravity
23
The volume of liquid passing a cross-section of a stream
Discharge
24
If the discharge passing a given cross-section of a stress is constant with time, the flow at that section is called:
Steady
25
When the path line of the individual particles of flowing liquid are irregular curves and continually cross each other and form a complicated network, the flow is called:
Turbulent
26
A pressure surge or wave caused when a fluid in motion is forced to stop or change direction suddenly (momentum change/ is reffered to in Hydraulics as
Water Hammer
27
A line joining the points of the highest elevation of water in a series of vertical open pipes rising from pipeline in which water flows under pressure is reffered to as:
Hydraulic Gradient
28
A cohesive soil deposit considered soft if the unconfined compression strength in kPa is between
24 to 48
29
Water has a maximum unit weight at temperature of
4 degree
30
The pressure exerted onto a liquid is transmitted undiminished to all portions of the liquid. The principle of mechanics is attributed to:
Pascal
31
In any stream flowing steadily without friction, the total energy contained is the same at every point in its path of low. This Principle is attributed to:
Bernoulli
32
The Largest grain dize that passes through a no. 200 siege in millimeters is
0.074 mm
33
The fractionof soils passing which sieve number is used for atterberg limots tests of soils
40
34
One of the following is not Characteristic of cohesionless soils:
High Shear strength
35
When at any instant, the number of particles passing every section of the stream are always equal, the flow is said to be:
Continuous
36
What would happen if the ground water table will be at the ground level?
Decrease in the vertical pressure
37
If the ground water table in a soil information rises as a resulting of flooding, the bearing capacity of the soil
Decreases
38
One of the following foundation condition does not affect the bearing capacity of the supporting soil.
Load imposed onto the soil
39
A line joining the points of the highest elevelation of water. In a series of vertical open pipes rising from a pipeline in which water flows under pressure is reffered to as:
Hydraulic Gradient
40
____ is device is used to determine the undrained shear strength of thr soil which consists of four equal-sized thin steel plates welded to a steel torque rod. The vane is pushed into the soil and Torque is applied at the top of the torque rod to rotate the vane at a uniform speed to cause failure
Shear Vane
41
______ is the most used property used in soil properties
Void Ratio
42
____ is a branch of hydraulics which deals with the study of forces ( including velocity and acceleration ) exerted by or upon liquid in motion
Hydrodynamic
43
________ is an abrupt rise in water surface which results from retarding water flowing at lower stage
Hydraulic Jump
44
The weight per unit volume of a liquid at a standard temperature and pressure is called _______
Specific Weight
45
In Civil Engineering, soil is _______
Uncemented aggregate
46
Specific Weight ov liquid ______
Does not vary on any other planet
47
Negative skin Friction on Piles _______
All of the choices
48
The metacentric height is the distance between the
Center of the gravity of the floating body and the metacenter
49
When the metacenter of a floating body is lower than the center of gravity, then the body will be in
Unstable
50
The intensity of vertical stress at a depth due to a point load acting on the surface of a semi- infinite elastic soil mass is
Directly proportional to the square of depth
51
The shear strength of a cohesionless soil is
Proportional to the tangent of the angle of shearing resistance
52
If the volume of voide is equal to the volume of solids, what is the porosity and void ratio equal to respectively
.5 and 1.0
53
Where is the metacenter for stable equilibrium
Above the center of gravity
54
Molecules of liquid gets attracted to
Surface Tension
55
In 1.3 C Nc + q Nq + 0.4(gama) B N(gama)
Angle of Friction
56
In AASHTO, soil greater than 75 mm is classified as
Cobbles
57
What test is not performed in a laboratory
Vane Test
58
In what plane is th additional stress (deviator streee) can affect the shear stress
Horizontal Plane
59
Triaxial Shear Test acts on what axis
all plane axis except x and y axis
60
The shear strength of soil _________
Increases with increase in normal stress