Part B2

Front 1

If the plasticity index of a soil has a numerical value of 0, the soil is:

Back 1

Non plastic

Front 2

Moisture content of soil is generally based on:

Back 2

Degree of saturation

Front 3

When rolling on embankment materials, the soil must be at:

Back 3

Optimum moisture content

Front 4

The method used in determining the relative strength of soil is:

Back 4

Soil penetration test

Front 5

A soil with a classification of A-3 is considered:

Back 5

Fine sand

Front 6

When a soil has a CBR value of 2%, the soil is considered

Back 6

Weak

Front 7

The strength of a subgrade is the principal factor in:

Back 7

Determining the thickness of the pavement

Front 8

It is the process of improving the properties of soil to make it suitable for a particular purpose:

Back 8

Stabilization method

Front 9

Generally, embankment material requires a compaction of:

Back 9

95%

Front 10

Soil with liquid limit exceeding 80 or plasticity index exceeding 55 is considered:

Back 10

Unsuitable material

Front 11

In order to determine the degree of compaction of in-placed base materials the test used is

Back 11

Field density test

Front 12

The particle size distribution of a soil is usually determined by

Back 12

Sieve analysis

Front 13

The strength of a subgrade is assessed by

Back 13

California bearing ratio

Front 14

Which of the following engineering properties of a granular soil is not included in the group:

Back 14

Compressive due to static load

Front 15

An embankment with a thickness of 0.55m shall be compacted to ensure its stability. How many layers will you compact and what is the minimum compaction requirement?

Back 15

3layers/ 95% min compaction requirement

Front 16

The higher the plasticity index in a soil is an indication of

Back 16

Clayee materials

Front 17

An abrasion test is conducted in the laboratory, showing the following data.Compute for the % abrasion loss.Original weight = 5000gWeight retained in No. 10 sieve = 3500gWeight passing in No. 10 sieve = 2500g

Back 17

30

Front 18

Which of the following is not used in the conduct of sieve analysis?

Back 18

Volumetric flask

Front 19

sampling base course materials from a roadway is being obtained at random by

Back 19

At least 3 equal increments

Front 20

Sampling of soil aggregates in a big stockpile shall be done by taking sample from___________.

Back 20

Bottom middle and top of stockpile

Front 21

Moisture-density relation is referred to

Back 21

Compaction test

Front 22

In Item 201, the designed level and transverse slope as shown in the plans with a permitted variation from design of:

Back 22

-10mm

Front 23

In conducting CBR the specimen shall be soaked for:

Back 23

96 hrs

Front 24

A very stable subgrade should require a CBR value of

Back 24

15% or more

Front 25

In conducting test for liquid and plastic limit, soil requirement must be

Back 25

Passing no 40 sieve

Front 26

The required plasticity index in item 200 is:

Back 26

Not greater than 12

Front 27

An Item 201 is to be incorporated in an unpaved road with a volume of 10,500 cu.m. how many Quality test is required?

Back 27

7

Front 28

In order to determine the mass percent of wearing resistance of coarse materials, the test to be conducted is

Back 28

Abrasion test

Front 29

Usually before concrete pouring is undertaken, the degree of compaction of a prepared base material shall be checked by

Back 29

Field density test

Front 30

The required CBR value in an aggregate base course:

Back 30

80% minimum