Hydraulics and Geotechnical Principle Engineering

Question 1

It is the ratio of volume of void spaces to volume of solid substance.

Answer 1

Void Ratio

Question 2

It is the ratio of volume of voids to the volume of soil sample / specimen.

Answer 2

Porosity

Question 3

It is the ratio of volume of water in the void spaces to volume of voids.

Answer 3

Degree of Saturation

Question 4

It is the ratio of water to the weight of solids in a given volume of soil.

Answer 4

Moisture Content

Question 5

Weight of soil per unit volume

Answer 5

Unit weight

Question 6

Weight of soil per unit volume without water

Answer 6

Dry unit weight

Question 7

The bulk unit weight of a soil when it is 100 percent saturated

Answer 7

Saturated unit weight

Question 8

Total wet / moist unit weight. It is the total weight over total volume

Answer 8

Bulk unit weight

Question 9

The hydraulic gradient that brings soil (essentially, coarse-grained soils) to static liquefaction

Answer 9

Critical hydraulic gradient, i

Question 10

The ratio of the total mass to the total volume of a unit of soil. Usually expressed as a unit weight where weight is interchanged with mass.

Answer 10

Density

Question 11

The ratio of the mass of the solids (soil grains) to the total unit volume of soil

Answer 11

Dry Density

Question 12

Density of granular soil relative to the minimum and maximum densities achieved for that particular soil.

Answer 12

Density Index / Relative Density

Question 13

Difference between the total density and the density of water.

Answer 13

Submerged / buoyant density

Question 14

Used to describe the degree of firmness of soil

Answer 14

Consistency

Question 15

The attraction of one water to another resulting from hydrogen bonding (water-water bond)

Answer 15

Cohesion

Question 16

It invloves the attraction of water molecule to a nonwater molecule (water-non water bond)

Answer 16

Adhesion

Question 17

The capacity of soil to adhere to other objects. It is estimated at mositure content that displays macimum adherence between thumb and forefinger.

Answer 17

Stickiness

Question 18

A field of measure of the ability of soil to withstand an applied stress or pressure as applied using the thumb and forefinger.

Answer 18

Rupture Resistance

Question 19

The limits of water content used to define soil behavior

Answer 19

Atterberg’s Limit

Question 20

The moisture content in percent required to close a distance of 12.7 mm along the bottom of the groove after 25 blows (defined as the moisture content at which soil beigns to behave as a liquid material and begins to flow)

Answer 20

Liquid Limit

Question 21

The device used in this method consists of a brass cup and a hard rubber. The brass cup is dropped onto the base by a cam operated by crank.

Answer 21

Cup Method to Determine Liquid Limit

Question 22

The moisture content at which the transition from semi-solid to plastic state.

Answer 22

Plastic Limit

Question 23

The moisture content at which the transition from solid to semi-solid takes place defined as the moisture content at which no further volume chnage occurs with further reduction in moisture content.

Answer 23

Shrinkage Limit

Question 24

Ratio which signifies the relative consistency of a cohesive in the natural state

Answer 24

Liquidity Index

Question 25

Degree of a soik can be molded or reworked causing permanent deformation without rupturing

Answer 25

Plasticity

Question 26

The ratio of the difference between the liquid limit and water content to the difference between the liquid limit and the plasticity index.

Answer 26

Consistency Index

Question 27

Difference between the liquid limit and plastic limit of a soil

Answer 27

Plasticity Index

Question 28

Soils formed by the weathered products at their place of origin

Answer 28

Residual soil

Question 29

Soils formed by deposition of quiet lakes

Answer 29

Lacustrine Soil

Question 30

Soils transported by running water and deposited along streams

Answer 30

Alluvial Soil

Question 31

Soils formed by the transportation and deposition of glaciers

Answer 31

Glacial Soil

Question 32

Soils deformed by deposition in the seas

Answer 32

Marine Soil

Question 33

Soil with occasional particles of quartz, fledspar, and other minerals

Answer 33

Gravel Soil

Question 34

Soil transported and deposited by wind

Answer 34

Aelian Soil

Question 35

Defined the ratio of the plasticty index to the percent of clay size fraction, by weight as activity.

Answer 35

Skempton

Question 36

Difference between the plastic and shrinkage limits.

Answer 36

Shrinkage Index

Question 37

Used to determine the grain size distribution of coarse-grained soil.

Answer 37

Sieve Analysis

Question 38

Used to determine the grain size distribution of the soils passing the No. 200 sieve.

Answer 38

Hydrometer Analysis

Question 39

This diameter in the particle size distribution curve corresponding to 10% finer. It is used to measure the hydraulic conductivity and drainage through the soil.

Answer 39

Effective size

Question 40

Used to determine the following four (4) parameters for a given soil.

Answer 40

Particle-Size Distribution Curve

Question 41

Defined as the ratio between the grain diameter (in mm) corresponding to 60% passing on the curve (D60) divided by the diameter of the 10% (D10) passing.

Answer 41

Coefficient of Uniformity

Question 42

Defined as the ratio between the square of the grain diameter (in mm) corresponding to 30% passing on the curve (D30) divided y the product of the grain diameter of the 60% passing and the diameter of the 10% passing.

Answer 42

Coefficient of Gradation

Question 43

A measure of the shape parameter obtained from a grain size distribution curve.

Answer 43

Coefficient of Curvature

Question 44

A type of soil in the particle size distribution curve in which most of the soil grains are the same.

Answer 44

Poorly Graded

Question 45

A system that has 8 major group for soil classification.

Answer 45

AASHTO System

Question 46

A system for soil classification that describes texture. It can be applied to most unconsolidated materials.

Answer 46

USCS System

Question 47

Soils with more than 50% by weight of grains retained on the #200 sieve (0.075 mm)

Answer 47

Coarse-grained soils

Question 48

Silt and Clay Soils. Soils containing particles smaller than No. 200 sieve or 0.075 mm in size according to the Unified Soil Classification System.

Answer 48

Fine-grained soils

Question 49

According to the USCS Soil Classification of a soil particle whose size is greater than 75 mm is called ____

Answer 49

Cobbles

Question 50

also called as Textural classification system

Answer 50

USDA System

Question 51

Soil particles which are finer (smaller) than 0.002 mm in size.

Answer 51

Clay