← Junior Engineer
Past Questions
Septic tanks are designed primarily for:
A)
Drinking water storage
B)
Primary treatment of sewage
C)
Stormwater collection
D)
Rainwater harvesting
A septic tank is an underground wastewater treatment system used primarily for the primary treatment of sewage in areas without a centralized sewer system.
1. How it works: It acts as a sedimentation tank where sewage is held for a period of time. During this retention period, heavy organic solids settle to the bottom as sludge, and lighter materials (like grease and oil) float to the top as scum.
2. Biological Process: Anaerobic bacteria decompose the organic matter in the sludge, reducing the overall organic load.
3. Primary Treatment: Because it focuses on the physical separation of solids and initial biological degradation, it is classified as a primary treatment process. The effluent from the tank then typically flows into a soak pit or drainage field for secondary treatment.
Why other options are incorrect:
- Option (a): Drinking water storage requires sterile, sealed tanks to prevent contamination; a septic tank contains raw sewage.
- Option (c): Stormwater collection is handled by storm drains or detention ponds; putting stormwater into a septic tank would overload it and cause failure.
- Option (d): Rainwater harvesting involves collecting clean rain for reuse; septic tanks are for waste disposal.
Work order is issued after:
A)
Completion of work
B)
Bill is passed
C)
Execution of agreement
D)
Payment of earnest money
In the standard procurement and tendering process for civil engineering works, the sequence of events is as follows: 1. Invitation of Tenders -> 2. Evaluation and Selection of the lowest responsive bidder (L1) -> 3. Issuance of Letter of Acceptance (LoA) -> 4. Execution of the formal Agreement (Contract Signing) -> 5. Issuance of the Work Order. The Work Order is the official instruction to the contractor to commence the work on-site. It is issued only after the legal contract (Agreement) has been signed by both the client/department and the contractor to ensure that the terms, conditions, and legal obligations are binding.
Why other options are incorrect:
- (a) Completion of work: The work order is the starting trigger; it cannot be issued after the work is finished.
- (b) Bill is passed: Passing bills occurs during or after the execution of work, long after the work order has been issued.
- (d) Payment of earnest money: Earnest Money Deposit (EMD) is submitted at the time of bidding (tendering stage) to ensure the bidder does not withdraw their bid; it precedes the selection of the contractor and the signing of the agreement.
A bill shows excess quantity of concrete used than estimated. What should be checked first?
A)
Total bar length
B)
Cement cost
C)
Site measurements and deviations approved
D)
Bill format
In civil engineering estimation and billing, when the actual quantity of a material (like concrete) exceeds the estimated quantity, the first step in the verification process is to ensure that the quantity claimed in the bill matches the actual work executed on-site. This is done by checking the 'Site Measurements' recorded in the Measurement Book (MB). Furthermore, any increase in quantity beyond the sanctioned estimate is considered a 'deviation'. According to standard public works department (PWD) protocols, deviations must be formally approved by the competent authority to ensure the excess expenditure is justified and authorized.
Why other options are incorrect:
- Option (a) Total bar length: This relates to reinforcement steel, not the volume of concrete.
- Option (b) Cement cost: Cost is a financial outcome; the primary issue here is the 'quantity' of the material, which must be verified physically before checking the cost.
- Option (d) Bill format: The format of the bill is a clerical detail and does not explain or justify why more material was used than planned.
For public tenders, which publication is mandatory?
A)
e-Tender portal or national newspapers
B)
Private media and social media
C)
SMS notification
D)
Worksite banner
In public procurement and government tendering, the primary objective is to ensure transparency, fair competition, and wide publicity to attract the most competent bidders.
1. **e-Tender Portal**: Modern government guidelines (such as the General Financial Rules - GFR) mandate the use of electronic procurement systems (e-tendering) to minimize human interference and ensure a transparent audit trail.
2. **National Newspapers**: For high-value public tenders, publication in widely circulated national or regional newspapers is mandatory to ensure that the invitation is accessible to the general public and potential contractors across the country.
Why other options are incorrect:
- **Option b (Private media and social media)**: While these may be used for supplementary promotion, they are not legally recognized as mandatory official channels for public tender notifications due to lack of standardization and officiality.
- **Option c (SMS notification)**: SMS is a communication tool for alerts, not a formal publication medium for detailed tender notices.
- **Option d (Worksite banner)**: Banners are used for site identification or project information after a contract is awarded, not for the initial invitation of bids to the general public.
A road in hilly terrain frequently erodes during rains. Which immediate corrective measure is most effective?
A)
Increase Road width and road thickness
B)
Provide proper surface drainage and toe wall
C)
Add gravel on top of the surface road
D)
Install signboards at a prominent location
In hilly terrain, the primary cause of road erosion during rains is uncontrolled surface runoff and the instability of the road embankment.
1. **Surface Drainage:** Water flowing across the road surface or cascading down the slope acts as a powerful erosive agent. Providing proper surface drainage (such as side drains, chutes, and catch-water drains) ensures that water is collected and channeled safely away from the road structure, preventing the washing away of the pavement and subgrade.
2. **Toe Wall:** A toe wall is a retaining structure built at the base (toe) of the road embankment. It prevents the erosion of the embankment slope by protecting the base from scouring and providing structural stability against landslides or slope failure caused by saturation.
Why other options are incorrect:
- **Option a:** Increasing width and thickness does not address the cause of erosion (water flow) and may actually increase the load on an unstable slope, potentially worsening the situation.
- **Option c:** Adding gravel is a temporary 'patch' and not a corrective measure. Without drainage, the gravel will simply be washed away during the next heavy rain.
- **Option d:** Signboards are safety measures for traffic management; they have no physical effect on the structural erosion of the road.
The term ‘hardness’ in water refers to presence of:
A)
Suspended solids
B)
Calcium and magnesium salts
C)
Iron
D)
Algae
Hardness in water is a chemical characteristic defined by the concentration of multivalent metallic cations. Specifically, it refers to the presence of dissolved salts of calcium (Ca²⁺) and magnesium (Mg²⁺), such as bicarbonates, chlorides, and sulfates.
- Why option 'b' is correct: Calcium and magnesium ions react with soap to form an insoluble curd (scum), preventing the soap from lathering, which is the classic definition of water hardness.
- Why option 'a' is incorrect: Suspended solids refer to turbidity and particulate matter, which affect the clarity of water but not its chemical 'hardness'.
- Why option 'c' is incorrect: While iron (Fe²⁺/Fe³⁺) and manganese can contribute to hardness, the primary and defining components of water hardness in environmental engineering are calcium and magnesium.
- Why option 'd' is incorrect: Algae are biological organisms that cause organic pollution and taste/odor issues, not chemical hardness.
A work can commence only after obtaining:
A)
Drawing set submitted by contractor
B)
Administrative and technical sanction
C)
Final bill approval by competent authority
D)
Contractor’s bank details
In government engineering works and public procurement, a project must follow a strict legal and financial approval process before execution.
1. **Administrative Sanction (AS):** This is the formal approval by the competent administrative authority for the expenditure and the necessity of the work. It signifies that the government agrees to the project in principle.
2. **Technical Sanction (TS):** This is the approval of the detailed estimates, designs, and specifications by the competent technical authority (e.g., Chief Engineer or Superintending Engineer). It ensures that the design is sound and the cost estimate is realistic.
Without these two sanctions, no funds can be legally allocated, and no contract can be formally awarded or commenced.
Why other options are incorrect:
- **Option a:** Drawings submitted by the contractor (shop drawings) are for execution details, but the project cannot start without the primary government sanctions.
- **Option c:** Final bill approval happens at the end of the project, not before it commences.
- **Option d:** Bank details are required for payment processing, but they are a clerical requirement of the contract agreement, not the legal prerequisite for the work's commencement.
Which formula gives more accurate area under irregular curves?
A)
Mid-section formula
B)
Trapezoidal formula
C)
Simpson's rule
D)
Average end area method
In surveying and numerical integration, different methods are used to calculate the area under an irregular curve based on the assumption of the boundary shape between offsets.
1. **Trapezoidal Rule (Option b):** This method assumes that the boundary between two successive offsets is a straight line. It effectively approximates the area as a series of trapezoids. Because it ignores the curvature of the boundary, it is less accurate for highly irregular curves.
2. **Simpson's Rule (Option c):** Also known as Simpson's 1/3 rule, this method assumes that the boundary between three successive offsets is a parabolic arc (a second-degree polynomial). Since most natural irregular curves are better approximated by parabolas than by straight lines, Simpson's rule provides a significantly more accurate result than the Trapezoidal rule, provided the offsets are taken at equal intervals and the number of offsets is odd.
3. **Mid-section formula (Option a):** This is a simpler approximation that uses the midpoint value, which is generally less precise than the parabolic approximation of Simpson's rule.
4. **Average end area method (Option d):** This is primarily used in earthwork calculations for volumes between two cross-sections rather than calculating the area under a single irregular curve on a 2D plane.
Therefore, Simpson's rule is the most accurate method among the given options for calculating the area under irregular curves.
Traffic density is expressed as:
A)
Vehicles/hour
B)
LPCD
C)
Persons/m²
D)
Vehicles/km
In Highway Engineering, traffic flow characteristics are defined by three primary parameters: Flow (q), Speed (u), and Density (k).
1. Traffic Density (k) is defined as the number of vehicles occupying a unit length of a roadway at a given instant. Therefore, its unit is expressed as vehicles per unit length (e.g., vehicles/km or vehicles/mile).
2. Analysis of other options:
- Option (a) 'Vehicles/hour' refers to Traffic Volume or Flow (q), which is the number of vehicles passing a point per unit of time.
- Option (b) 'LPCD' (Litres Per Capita per Day) is a unit used in Water Supply Engineering to measure water demand.
- Option (c) 'Persons/m²' is a measure of crowd density or occupancy, not traffic density for vehicles on a highway.
The fundamental relationship between these parameters is given by the formula: Flow (q) = Density (k) × Speed (u).
Salvage value means:
A)
Sale value before use
B)
Expected resale value after useful life
C)
Net profit
D)
Depreciation amount
In estimation, costing, and accounting, 'Salvage Value' (also known as scrap value or residual value) is defined as the estimated amount that an asset is expected to be worth at the end of its useful life. It is the amount that can be recovered by selling the asset as scrap or for reuse after it is no longer functional or efficient for its original purpose.
Why other options are incorrect:
- Option (a) 'Sale value before use' refers to the initial purchase cost or market value at the time of acquisition.
- Option (c) 'Net profit' is the financial gain remaining after all operating expenses, taxes, and interests have been deducted from total revenue.
- Option (d) 'Depreciation amount' is the total loss in value of an asset over its useful life, calculated as (Original Cost - Salvage Value).
Steel structures are preferred over RCC when:
A)
High strength-to-weight ratio is required
B)
Low-rise construction is needed
C)
Bricks are not available
D)
Paint costs are low
Step-by-step reasoning:
1. **Analysis of Steel vs. RCC**: Structural steel has a significantly higher yield strength compared to concrete. Because steel is much stronger per unit area, the members required to carry a specific load are much smaller and lighter than those required for Reinforced Cement Concrete (RCC).
2. **Strength-to-Weight Ratio**: This ratio is a critical engineering metric. Steel's high strength-to-weight ratio allows for the construction of long-span structures (like bridges) and high-rise buildings while reducing the dead load on the foundations.
3. **Evaluating Option (a)**: This is the primary technical advantage of steel. When a project requires high strength without adding excessive mass (weight), steel is the preferred material.
4. **Evaluating Option (b)**: Low-rise construction is typically more economical using RCC or masonry; steel is generally preferred for high-rise or large-span structures.
5. **Evaluating Option (c)**: The availability of bricks relates to masonry work, not the fundamental structural choice between a steel frame and an RCC frame.
6. **Evaluating Option (d)**: Paint costs are a maintenance factor, not a structural reason for choosing steel over RCC. In fact, the need for periodic painting to prevent corrosion is often a disadvantage of steel compared to RCC.
A JE notices the contractor is claiming payment for items not recorded in MB. What should be done?
A)
Approve partial payment and request the contractor for justification
B)
Refer to SOR and enquire any possible clause for releasing payment
C)
Insist on physical measurement and proper MB entry before processing
D)
Cancel the contract and black-list the Contractor
In government engineering contracts, the Measurement Book (MB) is the primary legal and financial record of the work executed. It serves as the basis for all payments.
1. **The Role of the MB**: No payment can be legally processed or audited without a corresponding entry in the MB, as it provides the evidence of the quantity of work done.
2. **Verification Process**: If a contractor claims payment for items not recorded, the Junior Engineer (JE) must first verify if the work was actually performed. This is done through 'physical measurement' on-site.
3. **Correct Procedure**: Once the work is physically verified, the measurements must be recorded in the MB, signed by both the JE and the contractor, and then processed for payment.
Why other options are incorrect:
- **Option a**: Approving partial payment without a record is a violation of financial rules and constitutes a serious audit objection.
- **Option b**: The Schedule of Rates (SOR) provides the unit price of items, but it cannot substitute for the record of quantity (MB) for a specific project.
- **Option d**: Canceling a contract or blacklisting a contractor is an extreme disciplinary action. A claim for payment is a commercial dispute/administrative error and does not automatically constitute fraud or breach of contract unless proven otherwise.
Which process is used to remove suspended solids from water?
A)
Disinfection
B)
Sedimentation
C)
Aeration
D)
Chlorination
Step-by-step reasoning:
1. **Understanding the Goal**: The question asks for the process used to remove 'suspended solids' (particles that are larger than dissolved molecules and remain suspended in the water column) from water.
2. **Analyzing Option (b) Sedimentation**: Sedimentation is a physical water treatment process that uses gravity to remove suspended solids. When water is kept still or moved slowly in a sedimentation tank, heavier particles settle to the bottom over time, forming a sludge layer. This is the primary method for removing suspended solids.
3. **Analyzing Option (a) Disinfection**: Disinfection is the process of killing or inactivating pathogenic microorganisms (bacteria, viruses). It does not remove physical solids.
4. **Analyzing Option (c) Aeration**: Aeration involves bringing water and air into close contact to remove dissolved gases (like CO2 or H2S) or to oxidize dissolved metals (like iron and manganese). It is not used to remove suspended solids.
5. **Analyzing Option (d) Chlorination**: Chlorination is a specific type of disinfection using chlorine to kill microbes. Like general disinfection, it has no effect on the removal of suspended solids.
Conclusion: Sedimentation is the only process listed specifically designed for the removal of suspended solids.
Running account bill is prepared:
A)
Once after completion
B)
Only for material
C)
At sanction stage
D)
Periodically based on work done
In civil engineering contracts, a 'Running Account (RA) Bill' is an interim payment made to the contractor during the progress of the work.
1. Why Option (d) is correct: Large construction projects take months or years to complete. To maintain the contractor's cash flow and ensure the project continues without financial strain, payments are made periodically (e.g., monthly or after reaching specific milestones) based on the actual measurement of work completed up to that date.
2. Why Option (a) is incorrect: A bill prepared once after completion is called the 'Final Bill'.
3. Why Option (b) is incorrect: While materials brought to the site may sometimes be included in RA bills (depending on the contract terms), the primary purpose of an RA bill is to pay for the overall work executed, not just materials.
4. Why Option (c) is incorrect: The sanction stage is the administrative approval phase before the work begins; no work has been executed yet, so no bill can be prepared.
Alum is used in water treatment as a:
A)
Disinfectant
B)
Filter medium
C)
Coagulant
D)
Softener
Step-by-step reasoning:
1. **What is Alum?** Alum (Aluminum Sulfate) is a chemical compound commonly used in water treatment plants.
2. **Mechanism of Action:** Most impurities in raw water (like clay, silt, and organic matter) are colloidal particles that carry a negative electrical charge. Because they have the same charge, they repel each other and remain suspended, making the water turbid.
3. **Coagulation Process:** When Alum is added to water, it dissociates to release positively charged aluminum ions (Al³⁺). These positive ions neutralize the negative charges on the colloidal particles, allowing them to come together and form larger, heavier clumps called 'flocs'.
4. **Sedimentation:** These flocs then settle to the bottom of the tank due to gravity, effectively removing the turbidity from the water.
Evaluating other options:
- **a. Disinfectant:** Disinfectants (like Chlorine or Ozone) are used to kill pathogens/bacteria, not to remove suspended solids.
- **b. Filter medium:** Filter media are physical materials (like sand or anthracite) that trap particles as water passes through them.
- **d. Softener:** Water softeners (like lime or ion-exchange resins) are used to remove hardness ions (Calcium and Magnesium), not for general turbidity removal.
Two engineers calculate plastering quantity for same wall and get different values. What should be verified first?
A)
Plaster thickness
B)
Drawing scale
C)
Measurement deductions for openings
D)
Cement-sand ratio
In estimation and costing for plastering, the quantity is calculated as the surface area of the wall. The most common source of discrepancy between two engineers calculating the same wall is the application of 'deduction rules' for openings (doors, windows, ventilators). According to standard codes (like IS 1200 in India), there are specific rules for deductions: for example, openings up to 0.5 sqm may not be deducted, or deductions may be made for one face but not the other for small openings. If one engineer deducts all openings and the other follows the standard code rules for partial deductions, their final quantities will differ significantly.
Why other options are incorrect:
- a. Plaster thickness: Thickness affects the volume of materials (cement/sand) but not the 'quantity' of plastering, which is typically measured in square meters (area).
- b. Drawing scale: While a scale error is possible, professional engineers typically use dimensions written on the drawing rather than scaling manually. Even if scaled, it would affect the overall wall size, but the most frequent point of professional disagreement in plastering is the deduction logic.
- d. Cement-sand ratio: This affects the mix design and cost, but not the measured quantity of the surface area to be plastered.
Tachometric readings in hilly terrain vary frequently. What technique improves consistency?
A)
Use plane table
B)
Shift benchmark
C)
Take multiple readings and average them
D)
Ignore steep slopes
In tachometry, distance and elevation are determined by reading the staff through a telescope. In hilly terrain, several factors can cause inconsistency in readings: 1) The staff may not be held perfectly vertical due to the slope, 2) Sightlines may be obstructed or affected by atmospheric refraction, and 3) The operator may struggle to stabilize the instrument on uneven ground. To mitigate these random errors and improve the precision and consistency of the data, the standard surveying practice is to take multiple observations (readings) and calculate the arithmetic mean (average). This reduces the impact of outliers and accidental errors.
Why other options are incorrect:
- (a) Plane table surveying is a graphical method and does not improve the precision of tachometric (optical) readings.
- (b) Shifting the benchmark changes the reference point but does not reduce the variance or inconsistency of the readings themselves.
- (d) Ignoring steep slopes is technically impossible and professionally negligent in surveying, as the slope is a primary factor in calculating the horizontal distance and reduced level (RL) in tachometry.
The radius of curvature is least in:
A)
Highways
B)
Railways
C)
City roads
D)
Rural roads
The radius of curvature is least in city roads because urban roads are designed with tighter curves due to space constraints, frequent intersections, and lower design speeds. Smaller design speed allows smaller minimum curve radius. Railways generally require much larger radii for safe high-speed movement, highways also need relatively large radii for comfort and safety, and rural roads usually have gentler alignments with larger radii than city streets.
Which document forms the basis for inviting tenders?
A)
Rate analysis sheet
B)
Bill of Quantities (BOQ)
C)
Measurement Book
D)
Valuation report
In the process of tendering for civil engineering projects, the Bill of Quantities (BOQ) is the primary document used to invite tenders. It provides a detailed list of all items of work, their descriptions, and the estimated quantities required for the project. Contractors use the BOQ to quote their rates for each item, ensuring that all bidders are pricing the same scope of work, which allows for a fair and standardized comparison of bids.
Why other options are incorrect:
- a. Rate analysis sheet: This is an internal document used by the department to estimate the cost of an item based on labor, materials, and overheads; it is not shared with bidders as the basis for their quotes.
- c. Measurement Book: This is a legal record used during the execution of the project to record the actual quantities of work performed for payment purposes; it is not used to invite tenders.
- d. Valuation report: This is used to determine the current market value of a property or asset, typically for insurance, sale, or loan purposes, and is unrelated to the tendering process for new construction work.
Mobilization advance is:
A)
Refundable expense
B)
Advance payment to contractor to start work
C)
Bonus amount
D)
Excess deduction
Mobilization advance is a payment made by the client (employer) to the contractor at the beginning of a project. Its primary purpose is to provide the contractor with the necessary working capital to 'mobilize' resources, such as transporting heavy machinery to the site, setting up temporary site offices, hiring labor, and procuring initial materials. This ensures that the project starts promptly without the contractor facing liquidity issues. This advance is typically recovered by the client through proportional deductions from the contractor's subsequent running account (RA) bills.
Why other options are incorrect:
- Option (a): It is not a 'refundable expense' in the sense of a deposit; it is a loan/advance that is recovered from payments due to the contractor.
- Option (c): It is not a bonus; it is a pre-payment of the contract sum.
- Option (d): It is an advance payment, not a deduction (though its recovery involves deductions).
A contractor is delaying work repeatedly but blames frequent rainfall. What is the correct course of action?
A)
Terminate the contract immediately and seek justification
B)
Verify rainfall records and consider time extension only if justified
C)
Ignore the delay and let the contractor complete the work at the earliest
D)
Change the contractor and re-tender the project
In government contracting and civil engineering project management, delays caused by 'Force Majeure' or 'Acts of God' (such as abnormal rainfall) are typically grounds for a legitimate extension of time (EOT). However, the contractor cannot simply claim rainfall as a reason; the claim must be substantiated.
1. **Verification**: The Engineer-in-Charge must verify the claim against official meteorological data (rainfall records) to determine if the rainfall was 'exceptional' or 'above average' for that specific region and season.
2. **Justification**: If the records prove that the rainfall actually hindered the critical path of the project, a time extension is granted to avoid unfair liquidated damages.
Why other options are incorrect:
- **Option a**: Immediate termination is a drastic measure and would likely lead to legal disputes (arbitration) because the contractor has provided a reason that needs to be investigated first.
- **Option c**: Ignoring the delay is a failure of contract management. It leads to project slippage without documentation, making it impossible to hold the contractor accountable if the project fails.
- **Option d**: Re-tendering is an extreme step that causes massive project delays and cost overruns; it is only done after a formal termination process following a breach of contract.
Timber can be made reasonably fire resistant by?
A)
Soaking it in Ammonium Sulphate
B)
Coating with Tar Paint
C)
Pumping creosote oil into Timber under high pressure
D)
Seasoning process
Timber is naturally combustible. To make it fire-resistant, it must be treated with fire-retardant chemicals.
1. **Ammonium Sulphate (Option a):** This is a well-known fire-retardant chemical. When timber is soaked in a solution of ammonium sulphate, the chemical penetrates the wood fibers. Upon exposure to heat, it releases gases that dilute the oxygen around the wood and form a protective char layer, significantly slowing down the combustion process. This is a standard method for improving the fire resistance of timber.
2. **Tar Paint (Option b):** Tar is a hydrocarbon-based material and is highly flammable. Coating timber with tar paint would actually increase the fire risk rather than reduce it.
3. **Creosote Oil (Option c):** Creosote is used primarily for preservation against fungi, insects, and decay (especially for railway sleepers and electric poles). While it protects against biological attack, creosote is an oil-based product and is flammable.
4. **Seasoning process (Option d):** Seasoning is the process of reducing the moisture content of timber to improve its strength, stability, and durability. While dry wood ignites faster than green wood, seasoning itself is not a fire-resistance treatment; it is a preparation process for structural stability.
In analysis of rates, contractor’s profit is usually considered as:
A)
2%
B)
25%
C)
10 to 15%
D)
5%
In the process of 'Analysis of Rates' for civil engineering works, the total cost of an item is calculated by summing the costs of materials, labor, and plant/equipment. To arrive at the final rate to be charged to the client, two additional percentages are typically added to the prime cost: 1) Contractor's Profit and 2) Overhead charges (such as office rent, stationery, and supervision). Standard practice in government schedules of rates (like CPWD or State PWDs) generally allocates 10% to 15% for the contractor's profit. This margin covers the contractor's risk and provides a reasonable return on investment. Options a (2%), d (5%), and b (25%) are either too low to sustain a business or excessively high compared to industry standards for public works contracts.
Which pavement defect is most likely caused by repeated heavy loading?
A)
Bleeding
B)
Rutting
C)
Stripping
D)
Cracking
Step-by-step reasoning:
1. **Rutting** is defined as the longitudinal surface depression in the wheel paths of a flexible pavement. It is primarily caused by the permanent deformation of the asphalt layers or the underlying subgrade due to repeated heavy axle loads (cumulative traffic loading). This is a classic structural failure related to loading.
2. **Bleeding** (Option a) occurs when excess asphalt binder migrates to the surface, often due to overheating of the mix or using too much binder; it is a material/mix design issue, not primarily caused by loading.
3. **Stripping** (Option c) is the loss of adhesion between the asphalt binder and the aggregate, usually caused by the presence of moisture (water) penetrating the pavement; it is a moisture-induced failure.
4. **Cracking** (Option d) is a broad term. While heavy loading can cause fatigue cracking (alligator cracking), cracking can also be caused by temperature changes (thermal cracking), shrinkage, or reflection. However, 'Rutting' is the most specific and characteristic defect directly associated with the 'repeated heavy loading' causing permanent deformation in the wheel paths.
Which book is maintained to record all sanctioned works?
A)
Muster roll
B)
Register of works
C)
Cash book
D)
MB
In government engineering departments (such as PWD), specific registers are maintained for financial and administrative accountability.
1. **Register of Works (Correct):** This is the primary record used to maintain a comprehensive list of all works that have been officially sanctioned. It tracks the administrative approval, technical sanction, estimated cost, and the current status of each project.
2. **Muster Roll (Incorrect):** This is used to record the attendance of daily-wage laborers and to calculate their wages for payment.
3. **Cash Book (Incorrect):** This is a financial record used to track all monetary transactions (receipts and payments) of the office on a daily basis.
4. **MB (Measurement Book) (Incorrect):** The MB is the basic record of all measurements of work actually executed. It is used as the basis for preparing bills, but it does not serve as the master list of sanctioned works.