Question 1
______ is an example of the end result method of quality control.
A. Slump
B. Unevenness
C. Soil compaction
D. Concreting
View Answer
Answer: Option B
Explanation:
The end result method uses both field and lab tests to ensure the quality of the work. The check for unevenness of the completed pavement is one such test. Slump, soil compaction and concreting are all examples of the process control method.
Question 2
IRC:43-1972 is referred to for quality control guidelines regarding which topic below?
A. Tools, equipment and appliances for rigid pavement
B. Tools, equipment and appliances for flexible pavement
C. Mix proportioning for rigid pavement
D. Mix proportioning for flexible pavements
View Answer
Answer: Option A
Explanation:
IRC:43-1972 is used for obtaining the guidelines on the tools, equipment and appliances that are used for quality control in the construction of rigid pavements. IRC:44-1972 is used for guidelines regarding the mix proportioning for rigid pavements.
Question 3
Table 3.3 in IRC:SP:11-1984 gives the summary of control tests for ______
A. DBM sub-base
B. WBM base
C. DBM base
D. WBM sub-base
View Answer
Answer: Option D
Explanation:
Table 3.3 summarizes the various control tests, their frequency of conductance and the code of reference for a WBM sub-base. There are tables with the same information for different types of sub-base like stone, brick soling, soil-gravel, mechanical-stabilized, lime-stabilized, cement modified soil and sand-bitumen mix.
Question 4
The aim of quality control is to prevent the defect.
A. True
B. False
View Answer
Answer: Option B
Explanation:
Quality control aims at finding the defect and improving it. Quality assurance is the term used to refer to the process of preventing the defect from taking place. Both terms are not the same as each other.
Question 5
The allowable tolerance of horizontal alignment for carriageway edges is ±25 mm.
A. True
B. False
View Answer
Answer: Option A
Explanation:
The horizontal alignment of the pavement must also be checked for its quality and prevent major failures. The tolerance of the same has been laid down in clause 7.2.2 IRC:SP:11-1984. For all highways except hill roads, the tolerance for carriageway edges is ±25 mm.
Question 6
The checking of the transverse profile of the pavement is done with the help of ______
A. Template
B. Wedge
C. Straight edge
D. Float
View Answer
Answer: Option A
Explanation:
The checking of the transverse profile of the pavement is done using camber boards or templates. The longitudinal profile is checked using a straight edge and wedge. A float is a tool that is used to smoothen the surface of concrete work.
Question 7
The quality control test for the rate of spread of binder is done based on IS 2386-1963.
A. True
B. False
View Answer
Answer: Option B
Explanation:
The quality control test for the rate of the binder is to be carried out according to Appendix 4 IRC:SP:11-1984 using the tray test vide. The frequency of the test is different for every type of material being used in pavement construction.
Question 8
The testing of parameters should be done in the proportion as ______ by the junior engineer, ______ by the executive engineer and ______ by the chief executive engineer.
A. 80, 10, 10 %
B. 70, 25, 5 %
C. 80, 15, 5 %
D. 70, 20, 10 %
View Answer
Answer: Option D
Explanation:
The tests to be carried out for ensuring quality control on the pavements is to be split among the levels of the engineers responsible for it. Most of the testing i.e. 70 % is done by the junior engineer. Then 20 % by the executive engineer and 10 % by the chief executive engineer.
Question 9
What are the different types of quality control?
A. Process control and target control
B. Operation control and target control
C. Process control and end result control
D. Operation control and end result control
View Answer
Answer: Option C
Explanation:
There are two different types of quality control methods being used over the years. They are process control and end result control. They have been outlined in detail in the IRC code.
Question 10
What are the key components of quality control?
A. Target and strategy
B. Target and variability
C. Strategy and result
D. Result and variability
View Answer
Answer: Option B
Explanation:
There are two key components of quality control. They are target and variability. These two components ensure the quality control of the processes – construction, maintenance and rehabilitation of highways.
Question 11
What are the main parameters to be tested for ensuring quality in the earthwork?
A. Borrow materials and compaction
B. Moisture content and compaction
C. Material properties and depth of earthwork
D. Density and deleterious materials
View Answer
Answer: Option A
Explanation:
The earthwork is the first step in the road construction process and its quality is of utmost importance. The tests on the properties of the borrow materials and the compaction are the main parameters to be checked.
Question 12
What does the code IRC:SP:57-2000 deal with?
A. Guidelines for quality of construction
B. Guidelines for quality of maintenance
C. Guidelines for quality systems
D. Guidelines for quality control
View Answer
Answer: Option C
Explanation:
IRC:SP:57-2000 is the code used to give the guidelines on the quality systems for roads. This deals with designing quality systems for all types of activities to be done on roads. It mainly gives ideas about quality assurance.
Question 13
What is the frequency of conducting the test for the quality of binder in the case of a bituminous penetration macadam?
A. Regularly
B. As required
C. Once per 500 m3
D. Once per 200 m3
View Answer
Answer: Option B
Explanation:
The quality of the binder should be tested as and when required. This has been clearly mentioned in Table 4.2 of IRC:SP:11-1984. Bituminous penetration macadam is used as a base course and it is necessary to check the quality of the binder as the need arises.
Question 14
Which code is referred to for the guidelines regarding quality control?
A. IRC:SP:12-2015
B. IRC:SP:11-1984
C. IRC:SP:12-1984
D. IRC:SP:11-2015
View Answer
Answer: Option B
Explanation:
IRC:SP:11-1984 is the code used to refer to while performing quality checks on the pavements. It is a handbook of quality control for the construction of roads and runways. IRC:SP:12-2015 gives the guidelines on parking.
Question 15
Which of the below is not a type of test performed on coarse aggregates in the rigid pavement for quality control?
A. Alkali-aggregate reaction
B. Los Angeles abrasion
C. Chemical test
D. Soundness
View Answer
Answer: Option C
Explanation:
The various tests to be performed on each material used in the rigid pavement are mentioned in Table 6.1 of IRC:SP:11-1984. In the table, for coarse aggregates, alkali-aggregate reaction, Los Angeles abrasion, impact and soundness tests are specific to it. The chemical test is done for ensuring water quality.
Question 16
Who is responsible for the decision to be taken on the end result method of quality control?
A. Designer
B. Government
C. Chief engineer
D. Construction agency
View Answer
Answer: Option D
Explanation:
In the method of end result quality control, the decisions are taken by the construction agency. The agency is responsible for making decisions regarding the selection of the construction method and the equipment for the same.