HPGE terms
問題一覧
1
In accordance with the Unified Soils Classification System, a soil grain having a size greater than No.200 sieve opening(0.074mm) but less than that of a No. 4 sieve (4.75mm opening) is called
Sand
2
A granular soil deposit is considered medium dense if the blow count of a standard penetration test is between
10 to 30
3
If the ground water table in a soil formation rises as a result of flooding, the bearing capacity of the soil
Decreases
4
Which of the following is NOT a characteristic of a cohesionless soil
Practically impermeable
5
In a standard penetration test, medium dense sand have number of blows of:
10 to 30
6
Acronym of AASHTO
American Association of State Highway and Transportation Officials
7
Acronym of USDA
U.S Department of Agriculture
8
Acronym of MIT
Massachusetts Institute of Technology
9
Acronym of ASTM
American Society of Testing and Materials
10
At what temperature (Degree Celsius) at which liquid water has the highest density?
4
11
The pressure exerted onto a liquid is transmitted equally and undiminished to all portions of the liquid. This principle in fluid mechanics is known as:
Pascals
12
Which of the following is not a characteristic of cohesive soil
Possess low shear strength
13
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, the flow is called
Turbulent
14
A line joining the points of 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
15
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
16
Is the component of shear strength of arock or soil that is independent of interparticle friction
Cohesion
17
A phenomenon in which the strength and stiffness of a soil is reduced by earthquake shaking or other rapid loading
Liquefaction
18
A pike of sand keeps from spreading out like a liquid because the weight of the sand keeps the grains stuck together in their current arrangement, mostly out of static friction. This weight and pressure is called
Effective stress
19
Which of the following is not a soil component?
Gas
20
A practice or procedure used to assess the particle size distribution (also called gradation) of a granular material. The size distribution is often of critical importance to the way the material performs ins use
Sieve analysis
21
According to USCS, what do you call a soil grain with grain size greater than 4.75mm but less than 75mm?
Gravel
22
Which of the following does not affect the settlement of a footing
None of these
23
Section302.4.1 NSCP. Steepness of the fill(above natural ground) shall not exceed
1:2
24
Section 302.2.2 NSCP. Steepness of the cut shall not exceed
1:2
25
A cohesive soil deposit is considered soft if the unconfined compression strength, in kPa, is between
0 to 24
26
A cohesive soil deposit is considered medium if the unconfined compression strength, in kPa, is between
24 to 48
27
A cohesive soil deposit is considered stiff clay if the unconfined compression strength, in kPa, is between
48 to 96
28
A cohesive soil deposit is considered very stiff clay if the unconfined compression strength, in kPa, is between
96 to 192
29
A cohesive soil deposit is considered hard if the unconfined compression strength, in kPa, is between
92 to 383
30
It is the instantaneous process of reducing the volume voids due to expulsion of pore air
Compaction
31
It is a time dependent process of reducing the volume voids durle to expulsion of pore water and plastic readjustment of soil solids
Consolidation
32
It is defined as the deformation of soil due to vertical stress. Also, defined as the vertical movement of the ground due to increased vertical stresses are applied to the ground surface
Settlement
33
Caused by elastic deformation of dry, moist and saturated soils, without any change in moisture content.
Immediate settlement
34
Caused by a volume change in saturated cohesive soils due to expulsion of water that occupies the void spaces.
Primary consolidated settlement
35
Caused by plastic readjustment of soil fabrics. it is an additional form of compression that occurs at constant effective stress
Secondary consolidation settlement
36
A material is _________ if it contains continuous voids
Permeable
37
It states that the velocity of flow of water through saturated soil is directly proportional to the hydraulic gradient
Darcy's Law
38
A test in which the hydraulic gradient is constant throughout the duration of experiment
Constant head permeability
39
A test in which the hydraulic gradient is continuously changing through the duration of experiment
Falling head test
40
The pressure exerted onto a liquid is transmitted equally and undiminished to all portions of the liquid. This principle in fluid mechanics is known as
Pascals
41
In any stream flowing steadily without friction the total energy contained is the same at every point in it's path of flow. This principle is attributed to
Bernoulli
42
Atmospheric pressure at sea level
101.325 kPa
43
Unit weight of air (at sea level and at 15°C)
12 N/m^3
44
What is the largest grain size that may pass through a No. 200 sieve?
0.074mm
45
It is the stress resulting from particle-to-particle contact of soil
Effective stress
46
It is the stress induced by water-pressure
Pore-water pressure
47
The ratio, expressed as a percentage of the amount if consolidation at a given time within soil mass, to the total amount of consolidation obtainable under a given stress condition
Degree of consolidation
48
It is the parameter used to describe the rate at which saturated clay or other soil undergoes consolidation, or compaction, when subjected to an increase in pressure
Coefficient of Consolidation
49
It is the volume decrease of aunit volume of soil per unit increase of effective pressure during compression
Coefficient of volume compressibility
50
It is the parameter used to find the consolidation coefficient with time taken for consolidation settlement in soil. it is non dimensional number
Time factor
51
It is the slope of void ratio pressure curve when both are plotted on an arithmetic scale
Coefficient of compressibility
52
The same idea that water moves upwards through a small tube against the force of gravity, water in soil moves upwards through a soil pores or the spaces between soil particles.
Capillary rise
53
It is used to determine the in-situ denseness or looseness of a granular soil
Relative density
54
It is the densification of soil by removal of air which requires mechanical energy
Soil compaction
55
The degree of compaction measured in terms of what?
Dry unit weight
56
The moisture content at which the maximum dry unit weight is attained is called
Optimum moisture content
57
It is defined as the ratio of the in-place, dry density of a soil or aggregate to the test maximum dry density of the same soil or aggregate when compacted by a specific test method
Relative compaction
58
What are the soil compaction apparatus?
Standard Proctor Mold and Hammer, Sand Cone Apparatus, Rubber Balloon Apparatus
59
Lab experiment to determine the optimum moisture content at which the soil can achieve it's maximum dry density
Standard Proctor Mold Apparatus
60
Approximately how many times is the pressure of mercury greater than the pressure exerted by water
13.6
61
A common method to measure the shear strength parameters of soil or rock material
Triaxial test
62
A soil mass is said to be in plastic equilibrium
Verge of failure
63
soil shall be considered expansive if plasticity index is _____ or greater
15
問題一覧
1
In accordance with the Unified Soils Classification System, a soil grain having a size greater than No.200 sieve opening(0.074mm) but less than that of a No. 4 sieve (4.75mm opening) is called
Sand
2
A granular soil deposit is considered medium dense if the blow count of a standard penetration test is between
10 to 30
3
If the ground water table in a soil formation rises as a result of flooding, the bearing capacity of the soil
Decreases
4
Which of the following is NOT a characteristic of a cohesionless soil
Practically impermeable
5
In a standard penetration test, medium dense sand have number of blows of:
10 to 30
6
Acronym of AASHTO
American Association of State Highway and Transportation Officials
7
Acronym of USDA
U.S Department of Agriculture
8
Acronym of MIT
Massachusetts Institute of Technology
9
Acronym of ASTM
American Society of Testing and Materials
10
At what temperature (Degree Celsius) at which liquid water has the highest density?
4
11
The pressure exerted onto a liquid is transmitted equally and undiminished to all portions of the liquid. This principle in fluid mechanics is known as:
Pascals
12
Which of the following is not a characteristic of cohesive soil
Possess low shear strength
13
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, the flow is called
Turbulent
14
A line joining the points of 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
15
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
16
Is the component of shear strength of arock or soil that is independent of interparticle friction
Cohesion
17
A phenomenon in which the strength and stiffness of a soil is reduced by earthquake shaking or other rapid loading
Liquefaction
18
A pike of sand keeps from spreading out like a liquid because the weight of the sand keeps the grains stuck together in their current arrangement, mostly out of static friction. This weight and pressure is called
Effective stress
19
Which of the following is not a soil component?
Gas
20
A practice or procedure used to assess the particle size distribution (also called gradation) of a granular material. The size distribution is often of critical importance to the way the material performs ins use
Sieve analysis
21
According to USCS, what do you call a soil grain with grain size greater than 4.75mm but less than 75mm?
Gravel
22
Which of the following does not affect the settlement of a footing
None of these
23
Section302.4.1 NSCP. Steepness of the fill(above natural ground) shall not exceed
1:2
24
Section 302.2.2 NSCP. Steepness of the cut shall not exceed
1:2
25
A cohesive soil deposit is considered soft if the unconfined compression strength, in kPa, is between
0 to 24
26
A cohesive soil deposit is considered medium if the unconfined compression strength, in kPa, is between
24 to 48
27
A cohesive soil deposit is considered stiff clay if the unconfined compression strength, in kPa, is between
48 to 96
28
A cohesive soil deposit is considered very stiff clay if the unconfined compression strength, in kPa, is between
96 to 192
29
A cohesive soil deposit is considered hard if the unconfined compression strength, in kPa, is between
92 to 383
30
It is the instantaneous process of reducing the volume voids due to expulsion of pore air
Compaction
31
It is a time dependent process of reducing the volume voids durle to expulsion of pore water and plastic readjustment of soil solids
Consolidation
32
It is defined as the deformation of soil due to vertical stress. Also, defined as the vertical movement of the ground due to increased vertical stresses are applied to the ground surface
Settlement
33
Caused by elastic deformation of dry, moist and saturated soils, without any change in moisture content.
Immediate settlement
34
Caused by a volume change in saturated cohesive soils due to expulsion of water that occupies the void spaces.
Primary consolidated settlement
35
Caused by plastic readjustment of soil fabrics. it is an additional form of compression that occurs at constant effective stress
Secondary consolidation settlement
36
A material is _________ if it contains continuous voids
Permeable
37
It states that the velocity of flow of water through saturated soil is directly proportional to the hydraulic gradient
Darcy's Law
38
A test in which the hydraulic gradient is constant throughout the duration of experiment
Constant head permeability
39
A test in which the hydraulic gradient is continuously changing through the duration of experiment
Falling head test
40
The pressure exerted onto a liquid is transmitted equally and undiminished to all portions of the liquid. This principle in fluid mechanics is known as
Pascals
41
In any stream flowing steadily without friction the total energy contained is the same at every point in it's path of flow. This principle is attributed to
Bernoulli
42
Atmospheric pressure at sea level
101.325 kPa
43
Unit weight of air (at sea level and at 15°C)
12 N/m^3
44
What is the largest grain size that may pass through a No. 200 sieve?
0.074mm
45
It is the stress resulting from particle-to-particle contact of soil
Effective stress
46
It is the stress induced by water-pressure
Pore-water pressure
47
The ratio, expressed as a percentage of the amount if consolidation at a given time within soil mass, to the total amount of consolidation obtainable under a given stress condition
Degree of consolidation
48
It is the parameter used to describe the rate at which saturated clay or other soil undergoes consolidation, or compaction, when subjected to an increase in pressure
Coefficient of Consolidation
49
It is the volume decrease of aunit volume of soil per unit increase of effective pressure during compression
Coefficient of volume compressibility
50
It is the parameter used to find the consolidation coefficient with time taken for consolidation settlement in soil. it is non dimensional number
Time factor
51
It is the slope of void ratio pressure curve when both are plotted on an arithmetic scale
Coefficient of compressibility
52
The same idea that water moves upwards through a small tube against the force of gravity, water in soil moves upwards through a soil pores or the spaces between soil particles.
Capillary rise
53
It is used to determine the in-situ denseness or looseness of a granular soil
Relative density
54
It is the densification of soil by removal of air which requires mechanical energy
Soil compaction
55
The degree of compaction measured in terms of what?
Dry unit weight
56
The moisture content at which the maximum dry unit weight is attained is called
Optimum moisture content
57
It is defined as the ratio of the in-place, dry density of a soil or aggregate to the test maximum dry density of the same soil or aggregate when compacted by a specific test method
Relative compaction
58
What are the soil compaction apparatus?
Standard Proctor Mold and Hammer, Sand Cone Apparatus, Rubber Balloon Apparatus
59
Lab experiment to determine the optimum moisture content at which the soil can achieve it's maximum dry density
Standard Proctor Mold Apparatus
60
Approximately how many times is the pressure of mercury greater than the pressure exerted by water
13.6
61
A common method to measure the shear strength parameters of soil or rock material
Triaxial test
62
A soil mass is said to be in plastic equilibrium
Verge of failure
63
soil shall be considered expansive if plasticity index is _____ or greater
15