HGE

Question 1

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

Answer 1

hydraulic gradient

Question 2

According to ASTM D2487-17, particles of rock that will pass a 3-in (75 mm) sieve and be retained on a No. 4 (4.75 mm) US standard sieve is called

Answer 2

gravel

Question 3

NSCP 302.2 Cuts: Unless otherwise recommended in the approved geotechnical engineering report or engineering report, cuts shall conform to the provisions of this section. In the absence of an approved geotechnical engineering report, these provisions may be waived for cuts ________ meters or less in height, involving intact rock or hard soil, that are not intended to support structures.

Answer 3

3

Question 4

NSCP 302.4 Fills: Unless otherwise recommended in the approved geotechnical engineering report, fills shall conform to the provisions of this section. In the absence of an approved geotechnical engineering report or engineering report, these provisions may be waived for minor fills (H ≤ ________ m) not intended to support structures.

Answer 4

2

Question 5

NSCP 302.4.5 Slopes: The slope of cut surfaces shall be no steeper than is safe for the intended use and shall be no steeper than 1 unit vertical in ________ units horizontal unless substantiating data justifying steeper slopes are submitted and approved.

Answer 5

2

Question 6

NSCP 302.4.4 Compaction: All fills shall be compacted in litis not exceeding ________ cm in thickness to a minimum of 90 percent of maximum density as determined by ASTM Standard D-1557.

Answer 6

20

Question 7

The elastic tendency of liquids which makes them acquire the least surface area possible. It is responsible, for example, when an object or insect such as mosquitoes that is denser than water is able to float or run along the water surface.

Answer 7

surface tension

Question 8

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

Answer 8

water hammer

Question 9

If the ground water table in a soil formation rises as a resulting of flooding, the bearing capacity of the soil

Answer 9

decreases

Question 10

One of the following foundation conditions does not affect the bearing capacity of the supporting soil.

Answer 10

Load imposed onto the soil

Question 11

What is the most used property in soil mechanics?

Answer 11

void ratio

Question 12

It is the ratio of weight of the water to the weight of the soil solid particles.

Answer 12

water content

Question 13

NSCP 302.5.2 Top of Cut Slope: The top of cut slopes shall not be made nearer to a site boundary line than one fifth of the vertical height of cut with a minimum of 0.6 m and a maximum of ________. The setback may need to be increased for any required interceptor drains.

Answer 13

3 m

Question 14

NSCP 302.5.3 Toe of Fill Slope: The toe of a fill slope shall be made not nearer to the site boundary line than one half the height of the slope with a minimum of 0.6 m and a maximum of ________.

Answer 14

6 m

Question 15

The state of fluidity occurring generally in granular soils.

Answer 15

liquefaction

Question 16

The ability of soil to allow water to flow through it.

Answer 16

permeability

Question 17

The moisture content of a soil, at which a given amount of compaction produces the highest value of dry density.

Answer 17

optimum moisture content

Question 18

The water content corresponding to the limit between the liquid and plastic states of consistency of the soil.

Answer 18

liquid limit

Question 19

The water content corresponding to the lowest water content at which the soil becomes plastic.

Answer 19

plastic limit

Question 20

The weight of water expressed as a percentage of the total dry weight of a soil material:

Answer 20

natural moisture content

Question 21

The highest pressure which a structure can exert on a blank of earth without causing it move in the direction of the pressure:

Answer 21

active pressure

Question 22

A measure of size of mineral particles of soils or rock: a physical characteristic of the particles of soil which affects its mechanical properties: used in classification and identification of soils:

Answer 22

sieve analysis

Question 23

An instrument to measure the density of soil:

Answer 23

densometer

Question 24

A foundation failure in which a surface of rupture is formed in the soil, the foundation settles considerably and probably tilts to one side and heaving of the soil occurs on one or both sides of the foundation:

Answer 24

shearing failure

Question 25

The horizontal pressure that an earth mass exerts on a wall:

Answer 25

active

Question 26

Plasticity index is:

Answer 26

the numerical difference between the liquid limits and the plastic limits

Question 27

It is the pressure at a point equal to the depth of that point below ground water level times the unit weight of water. This head is considered in the design of basement floors and similar horizontal elements below the water table.

Answer 27

hydrostatic pressure

Question 27

Water content corresponding to the limit between the liquid and plastic states of consistency of a soil:

Answer 27

liquid limit

Question 28

The lowest water content at which a soil becomes plastic.

Answer 28

plastic limit

Question 29

The process by which a liquid is drawn into and tends to fill permeable pores in a porous solid and increase is mass of a porous solid resulting from the penetration of a liquid into its permeable pores known as:

Answer 29

absorption

Question 30

The state in which two surface are held together by interfacial effects which may consist of molecular forces, interlocking action, or both are known as:

Answer 30

adhesion

Question 31

The maximum unit pressure to which a soil or other material should be subjected to guard against shear failure or excessive settlement is known as:

Answer 31

allowable bearing capacity

Question 32

An arbitrary water contents (shrinkage limit, plastic limit, liquid limit) determined by standard test that define the boundaries between the different states of consistency of plastic soils is called as:

Answer 32

Atterberg Limits

Question 33

The ratio of the volume of water in the void spaces to the volume of voids is called:

Answer 33

degree of saturation

Question 34

The ratio of the weight of the soil specimen to the volume of the soil specimen is called:

Answer 34

moist unit weight

Question 35

In granular soils, the degree of compaction in the field can be measured and is known as:

Answer 35

relative density

Question 36

The moisture content which the soil changes from a semi-solid state to a solid state is defined as

Answer 36

shrinkage limit

Question 37

The moisture content which the soil changes from plastic to a semi-solid stage is defined as

Answer 37

plastic limit

Question 38

The difference between liquid limit and the plastic limit of a soil.

Answer 38

plasticity index

Question 39

The percentage of moisture content at which a groove closure of 12.5 mm occurs at 25 blows is known as:

Answer 39

liquid limit

Question 40

The moisture content at which the soil changes from a liquid to plastic stage is

Answer 40

liquid limit

Question 41

The gradual increase in the effective stress in the clay layer which causes gradual settlements over a period of time is.

Answer 41

consolidation

Question 42

Compaction of soil increases its density and produces some effects such as: a. an increase in shear strength of the soil b. a decrease in future settlement of soil c. decrease in its permeability d. all of the above

Answer 42

all of the above

Question 43

It is wearing away of the ground surface as a result of the movement of wind or water

Answer 43

erosion

Question 44

It is a graphical or pictorial method for solving normal and shear stresses on any plane once the stresses on orthogonal planes are known. This method uses the simple properties of a circle and simplifies the calculation necessary for determining the stresses.

Answer 44

Mohr's Circle

Question 45

The phenomenon in which water rises above the groundwater table against the pull of gravity but it is in contact with the water table as its source.

Answer 45

capillarity rise

Question 46

The theory that is based on the concept of a failure wedge bounded by the wall face and by a failure surface passing through the toe of the retaining wall is

Answer 46

Coulomb's Theory

Question 47

The flow of water along contact surface between structure and soil or rock foundations, especially in dams is termed as:

Answer 47

seepage

Question 48

It is a pressure caused by the weight of earth or its sideways pressure.

Answer 48

earth pressure

Question 49

____________________ is widely employed as an in-situ technique to assess the undrained shear strength of soil, particularly in the case of soft clays. The experiment is conducted using a specialized apparatus comprising of a cylindrical rod affixed with blades, which is put into the soil and subsequently rotated.

Answer 49

Vane shear test

Question 50

The component of shear strength of a rock or soil that interparticle friction is called

Answer 50

cohesion

Question 51

A ship floating in seawater is stable if the metacenter

Answer 51

is above the center of gravity

Question 52

Soil derives its strength from its capacity to resist

Answer 52

shear

Question 53

Which of the following is not a component of the soil mass? a. minerals b. organic matter c. gas d. none in the list

Answer 53

none in the list

Question 54

If with steady flow in any length or reach of a stream, the average velocity at every cross section is the same in that reach, the flow is said to be

Answer 54

uniform

Question 55

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

Answer 55

turbulent

Question 56

In USCS, a solid having a size larger than the No. 200 sieve (0.074 mm) but smaller than the No. 4 sieve (4.75 mm opening) is called

Answer 56

sand

Question 57

If the discharge passing a specific cross-sectional area of a pipe remains constant with time, the flow at that particular section is referred to as

Answer 57

steady

Question 58

not a characteristic of cohesionless soil

Answer 58

practically impermeable

Question 59

At any given moment, the number of particles passing every section of the stream is equal, the flow at that particular section is referred to as

Answer 59

continuous

Question 60

A granular soul deposit is considered medium dense if the blow count of a standard penetration test is between _______.

Answer 60

10 to 30

Question 61

The unit weight of dry air (at 0°C and standard barometer pressure) in N/meter³ is

Answer 61

12.7

Question 62

The pressure exerted onto a liquid is transmitted equally and undiminished to all portions of the liquid. Thus principle in fluid mechanics is known as

Answer 62

Pascal's

Question 63

For the value of atmospheric pressure at sea level used in engineering practice, evaluate about how high, in meters, is the atmosphere above sea level

Answer 63

8500

Question 64

Not a characteristic of cohesive soil

Answer 64

Low shear strength

Question 65

Largest grain size that may pass through a No. 200 sieve

Answer 65

0.074 mm

Question 66

Atterberg limit tests is done on aggregates that pass through what sieve size

Answer 66

No. 40 mesh or 0.425 mm