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問題一覧
1
The weight per unit volume of a liquid at a standard temperature and pressure is called:
Specific Weight
2
In Civil Engineering, soil is _______.
Uncemented Aggregate
3
Specific Weight of liquid _________.
Does not vary on any other planet
4
Negative Skin Friction on Piles ________.
All of the above
5
The metacentric height is the distance between the ______.
Center of gravity of the floating body and the metacenter
6
When the metacenter of a floating body is lower than the center of gravity, then the body will be in _______.
Unstable equilibrium
7
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
8
The shear strength of a cohesionless soil is ______.
Proportional to the tangent of the angle of shearing resistance
9
If the volume of voids is eaual to the volume of solids, what is the porosity and void ratio equal to respectively?
0.5 and 1.0
10
Where is the metacenter for stable equilibrium?
Above the center of gravity
11
Molecules of liquid gets attracted to _______.
Surface Tension
12
Nc, Nq, and Ny are function of _______.
Angle of Friction
13
In AASHTO, soil greather than 75mm is classified as _______.
Cobbles
14
Ratio of weight of water to the weight of solid particles.
Water Content
15
What test is NOT performed in laboratory?
Vane Test
16
In what plane is the additional stress (deviator stress) can affect the shear stress?
Horizontal Plane
17
Triaxial Shear Test acts on what axis?
All plane axis except x and y axis
18
The Shear Strength of a soil _______.
Increases with increase normal stress
19
______ is a device used to determine the undrained shear streghth of the soil which consists of four equal-sized thin steel plates welded to a steel torque rod.
Shear Vane
20
______ is the most used property in soil properties.
Void Ratio
21
______ is a branch of hydraulics which deals with the study of forces (including velocity and acceleration) exerted by or upon liquids in motion.
Hydrodynamics
22
______ is an abrupt rise in water surface which results from retarding water flowing at lower stage.
Hydraulic Jump
23
It occurs in soils of saturated cohesionless particles such as sand and causes a sudden drop in shear strength and its bearing capacity. In effect, the soil turns to a liquid, allowing everything it previously supported to sink.
Liquefaction
24
A cohesive soil deposit is considered SOFT if the unconfined compression strength in kPa is between:
24 to 48
25
Section 302.2.2 of the NSCP provides that the slope of cut surfaces shall be no steeper than is safe for intended use and shall be no steeper than ______.
1 to 2
26
What would happen if the ground water table will be at the ground level?
Decrease in the Vertical Pressure
27
If the ground water table in soil formation rises as a resulting of flooding, the bearing capacity of the soil _____.
Decrease
28
One of the following conditions DOES NOT affect the bearing capacity of the supporting soil:
Load imposed onto the soil
29
A line joining the points of the highest elevation of water in a series of vertical open pipes rising from a pipeline in which water flows under pressure is referred to as:
Hydraulic Gradient
30
A Pressure Surge or Wave caused when a fluid in motion is forced to stop or change direction suddenly (momentum change) is referred to in Hydraulics as:
Water Hammer
31
When at any instant, the number of particles passing every section of the stream are always equal, the flow is said to be ______.
Continuous Flow
32
A granular soil deposit is considered MEDIUM if the blow count of a standard penetration is between:
10 to 30
33
NOT characterisitic of cohesionless soils:
High Shear Strength
34
Prone to Settlement under vibratory load.
40
35
The fraction of soil passing which sieve number is used for Atterberg Limits tests of soils?
40
36
The ratio between the volume of the water and the volume of the voids in a soil mass.
Degree of Saturation
37
The ratio between the volume of voids and the total volume of the soil mass.
Porosity
38
Water has a maximum unit weight at a temperature of __.
4 Degree Celsius
39
PRINCIPLE: The pressure exerted onto a liquid is transmitted undiminished to all portions of the liquid.
Pascal
40
PRINCIPLE: In any stream flowing steadily without friction, the total energy contained is the same at every point in its path of low.
Bernoulli
41
The largest grain size that passed a no. 200 in mm is ___.
0.0740mm
42
When the path lines of the individual particles of a flowing liquid are irregular curves and continually cross each other and form a complicated network.
Turbulent Flow
43
In the Cohesion Strength, k is equal to ____.
0.50
44
Soil derives its strength from its capacity to resist ____.
Shear
45
NOT component of the soil mass:
None of the above
46
The component of Shear Strength of a rock or soil that interparticle friction.
Cohesion
47
In USCS, which are considered coarse grained if the passing through no. 200 sieve is less than ____.
50
48
DOES NOT affect foundation settlement:
None of the above
49
A process by which water-saturated soil sediment temporarily loss strength and acts as a fluid.
Liquefaction
50
PRINCIPLE: A body placed in a liquid is buoyed up by a force equal to the weight of the displaced liquid.
Archimedes
51
If with steady flow in any length or reach of a steam, the average velocity at ever cross-section is the same in that reach.
Uniform Flow
52
A ship floating in seawater is stable if the metacentric height is:
Above the center of gravity
53
The volume of liquid passing a cross-section of a steam.
Discharge
54
If the discharge passing a given cross-section of a stress is constant with time.
Steady Flow
55
Value of surface tension at normal room temperature.
0.064 N/m
56
The force why small insects can walk on the water.
Surface Tension
57
It is a soil whose present effective over burn pressure is less than that which the soil experienced in the past.
Over Consolidated
58
What happens when there is a lowering of water table?
There is a decrease of lateral pressure
59
The ratio of the volume of voids and the volume of solids.
Void Ratio
60
The groud water table is located at a certain depth below the ground surface. This will cause an upward seepage. What would be the resulting effective stress at a certain point below the ground water table due to the upward seepage?
This will cause the decrease of the effective stress at that point
61
If we increase the compaction energy, what will happen to the maximum dry density (MDD)?
The dry unit weight of soil will increase