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  • Kimoy

  • 問題数 60 • 10/30/2023

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    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