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Past Questions — 2025
Which estimate is prepared in the earliest stage of a project to assess its feasibility?
A)
Revised estimate
B)
Supplementary estimate
C)
Preliminary estimate
D)
Detailed estimate
In civil engineering estimation and costing, different types of estimates are prepared at different stages of a project's lifecycle:
1. **Preliminary Estimate (Approximate Estimate):** This is prepared at the very beginning (earliest stage) of a project. Its primary purpose is to obtain administrative approval and to assess the financial and technical feasibility of the project before investing time and resources into detailed designs.
2. **Detailed Estimate:** This is prepared after the preliminary estimate is approved. It involves a complete breakdown of quantities (Bill of Quantities) and rates, providing an accurate cost of the project. It is used for technical sanction and tendering.
3. **Revised Estimate:** This is prepared when the original detailed estimate is found to be insufficient, usually because the expenditure exceeds the original sanctioned amount by more than 5% or the deviations are significant.
4. **Supplementary Estimate:** This is prepared when additional works are added to the project that were not included in the original detailed estimate.
Therefore, for assessing feasibility at the earliest stage, the Preliminary Estimate is the correct choice.
A traffic signal leads to frequent congestion. What should be evaluated first?
A)
Color brightness
B)
Age of signal
C)
Location of pole
D)
Signal timing and traffic volume pattern
In Transportation Engineering, congestion at a signalized intersection is primarily a function of the relationship between the demand (traffic volume) and the capacity (determined by signal timing).
1. **Signal Timing**: The 'Green time' allocated to a specific approach must be sufficient to clear the queue formed during the red interval. If the cycle length or split is poorly designed, vehicles will accumulate, leading to congestion.
2. **Traffic Volume Pattern**: Understanding peak hours, directional distribution, and turning movements is essential to determine if the current signal timing is still appropriate for the actual traffic flow.
Why other options are incorrect:
- **a. Color brightness**: This is a visibility/safety issue, not a cause of systemic congestion.
- **b. Age of signal**: The age of the hardware does not cause congestion unless the signal has failed completely; a 10-year-old signal and a 1-year-old signal function identically if the timing logic is the same.
- **c. Location of pole**: While pole placement affects visibility and sight distance, it does not typically cause frequent congestion unless it physically obstructs the roadway.
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 liquidity to 'mobilize' resources, which includes transporting heavy machinery to the site, setting up temporary site offices, hiring labor, and procuring initial raw materials. This ensures that the project starts promptly without the contractor facing financial bottlenecks. This advance is not a gift or bonus; it 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): While it is recovered later, it is not a 'refundable expense' in the accounting sense (like a security deposit); it is a prepayment for work to be performed.
- Option (c): It is not a bonus; it is a loan/advance that must be paid back through work progress.
- Option (d): It is an advance payment (credit to contractor), not a deduction (debit from contractor).
In analysis of rates, contractor’s profit is usually considered as:
A)
2%
B)
25%
C)
10 to 15%
D)
5%
In the analysis of rates for civil engineering works, the total cost of an item is calculated by adding the cost of materials, labor, and plant/machinery. To this prime cost, additional percentages are added to cover overheads and profit.
1. **Overheads**: These include office rent, staff salaries, electricity, and other administrative expenses. These typically range from 5% to 10%.
2. **Contractor's Profit**: This is the net gain the contractor expects for executing the work and taking the associated risks. In standard practice and according to most Public Works Department (PWD) norms and textbooks on Estimation and Costing, the contractor's profit is generally considered to be between 10% and 15%.
Comparing the options:
- Option (a) 2% and (d) 5% are too low to cover the risks and business costs of a construction firm.
- Option (b) 25% is excessively high and would make the bid uncompetitive in a government tender process.
- Option (c) 10 to 15% aligns with the industry standard for rate analysis.
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 a underground wastewater collection tank where sewage is stored. It functions as a primary treatment unit through two main processes: sedimentation and anaerobic digestion. 1. Sedimentation: Heavier organic and inorganic solids settle to the bottom to form a layer of sludge. 2. Anaerobic Digestion: Bacteria break down the organic matter in the absence of oxygen. The resulting liquid (effluent) is then typically discharged into a soak pit or drainage field for further secondary treatment.
Why other options are incorrect:
- Option (a) Drinking water storage: Septic tanks handle waste (sewage), which is contaminated and hazardous; they are never used for potable water.
- Option (c) Stormwater collection: Stormwater is typically handled by separate storm drains or detention ponds to prevent the septic system from overflowing or flooding.
- Option (d) Rainwater harvesting: This involves collecting clean rain for reuse, whereas a septic tank is designed for the disposal and treatment of waste.
An estimate for a public building was underquoted by 15%. During execution, rates increased sharply. What action is most appropriate?
A)
Revise the estimate with current cost index and seek approval
B)
Issue a new tender
C)
Cancel the project
D)
Request contractor to continue at old rates
In public works and government contracting, when an estimate is found to be inadequate due to underquoting or sharp increases in material and labor rates during execution, the standard administrative procedure is to revise the estimate. This is typically done using a 'Cost Index' (a percentage increase applied to the basic schedule of rates to reflect current market conditions). Once the revised estimate reflects the actual current costs, it must be submitted to the competent authority for technical sanction and financial approval to ensure the project has sufficient funding to reach completion.
Why other options are incorrect:
- Option b (Issue a new tender): This is impractical if the project is already under execution, as it would lead to legal disputes with the current contractor and significant delays.
- Option c (Cancel the project): This is an extreme measure and not a standard engineering management response to a cost overrun in a public building.
- Option d (Request contractor to continue at old rates): This is unrealistic and often leads to the contractor abandoning the site or compromising the quality of work, as they cannot sustain losses due to sharp market rate increases.
In analysis of rates, contractor’s profit is usually considered as:
A)
2%
B)
25%
C)
10 to 15%
D)
5%
In the analysis of rates for civil engineering works, the total cost of an item is calculated by adding the cost of materials, labor, and equipment. To this prime cost, additional percentages are added to cover overheads and profit.
1. **Overheads**: These include office rent, electricity, stationery, and staff salaries, typically ranging from 2% to 5%.
2. **Contractor's Profit**: This is the reward for the contractor's risk and management. In standard practice and according to most Public Works Department (PWD) guidelines and textbooks on Estimation and Costing, the contractor's profit is generally considered to be between 10% and 15%.
Comparing the options:
- Option (a) 2% and (d) 5% are too low to cover the risks and operational costs of a construction firm.
- Option (b) 25% is excessively high and would make the bid uncompetitive in a government tender process.
- Option (c) 10 to 15% aligns with the industry standard for rate analysis.
A contract is said to be completed when:
A)
All work is executed and recorded with final measurements
B)
Running bill is submitted
C)
Contractor leaves site
D)
Defect liability ends
In civil engineering contracts and estimation/costing, a contract is considered 'completed' from a technical and administrative standpoint when the physical work is finished according to the specifications and the 'Final Measurement' is recorded in the Measurement Book (MB). The final measurement is the basis for the final bill, which settles all financial accounts between the client and the contractor.
Why other options are incorrect:
- Option (b): A running bill (interim payment) is submitted periodically during the progress of the work, not at the end.
- Option (c): A contractor leaving the site does not legally or technically signify completion; the work must be verified and measured first.
- Option (d): The Defect Liability Period (DLP) begins AFTER the work is completed and handed over. While the final payment (including retention money) might be released after the DLP, the 'completion of the contract work' refers to the execution and measurement phase.
The unit of measurement for RCC in footings is:
A)
RMT
B)
Sq.m
C)
Cum
D)
Kg
In civil engineering estimation and costing, the unit of measurement for an item is determined by the nature of the work and the volume of material involved.
1. **RCC (Reinforced Cement Concrete)**: Concrete is a three-dimensional material. For structural elements like footings, columns, beams, and slabs, the quantity is calculated by multiplying length × width × thickness (or depth). Therefore, the standard unit of measurement is cubic meters (Cum or m³).
2. **Analysis of other options**:
- **RMT (Running Meter)**: Used for linear items such as pipes, railings, or cornices where the cross-section is constant.
- **Sq.m (Square Meter)**: Used for surface area measurements such as plastering, painting, or flooring.
- **Kg (Kilogram)**: Used for measuring the weight of reinforcement steel, but not the concrete itself.
Since footings are bulk concrete structures, they are measured in cubic meters (Cum).
The sinking fund is created for:
A)
Construction cost
B)
Labor charges
C)
Running cost
D)
Future replacement of a structure
A Sinking Fund is a fund formed by setting aside a certain amount of money periodically (usually annually) at a fixed rate of interest so that at the end of the useful life of a structure or asset, the accumulated amount is sufficient to replace the asset or pay off a debt.
- Option (a) Construction cost: This is the initial capital expenditure (CAPEX) required to build the structure, not a fund created for future use.
- Option (b) Labor charges: These are operational or construction expenses paid as the work progresses.
- Option (c) Running cost: Also known as Operation and Maintenance (O&M) costs, these are recurring expenses for the daily functioning of the structure.
- Option (d) Future replacement of a structure: This is the correct definition. Since structures have a limited lifespan, a sinking fund ensures that the cost of reconstruction or replacement is available without causing a sudden financial burden at the end of the asset's life.
The value of CBR is mainly used to design:
A)
Rigid pavement
B)
Flexible pavement
C)
Bridges
D)
Shoulders
The California Bearing Ratio (CBR) is a penetration test used to evaluate the mechanical strength of road subgrades and base courses. It is specifically the primary parameter used in the design of flexible pavements (such as asphalt roads) to determine the required thickness of the pavement layers. The logic is that a lower CBR value (weaker soil) requires a thicker pavement structure to distribute the traffic load effectively to the subgrade.
Why other options are incorrect:
- Rigid pavements (Option a) are designed based on the Modulus of Subgrade Reaction (k-value), which measures the deformation of the slab under load, rather than the CBR value.
- Bridges (Option c) are structural elements designed based on load-bearing capacity of piles or foundations (bearing capacity of soil), not CBR.
- Shoulders (Option d) are components of the road, but the CBR value is used to design the overall pavement structure, not specifically the shoulders alone.
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 a watertight underground container used for the onsite treatment of sewage. Its primary function is to provide primary treatment through two main processes: 1. Sedimentation: Heavier organic solids settle to the bottom to form a layer of sludge. 2. Anaerobic Digestion: Bacteria break down the organic matter in the absence of oxygen. The resulting liquid (effluent) is then typically discharged into a soak pit or drainage field for further secondary treatment.
Why other options are incorrect:
- Option (a) Drinking water storage: Septic tanks contain raw sewage and pathogens; they are the opposite of potable water storage.
- Option (c) Stormwater collection: Stormwater is typically handled by separate storm drains or detention ponds; introducing stormwater into a septic tank would overload it and cause failure.
- Option (d) Rainwater harvesting: This involves collecting clean rain for reuse, whereas a septic tank is designed for waste disposal.
A traffic signal leads to frequent congestion. What should be evaluated first?
A)
Color brightness
B)
Age of signal
C)
Location of pole
D)
Signal timing and traffic volume pattern
In Transportation Engineering, congestion at a signalized intersection is primarily a function of the relationship between the demand (traffic volume) and the capacity (provided by the signal timing). To resolve congestion, an engineer must first perform a traffic volume study to determine the peak hour flow and analyze the current signal timing (cycle length, green time, and red time) to see if the capacity is sufficient to handle the demand.
- Option (a) Color brightness: This is a visibility/maintenance issue and does not cause systemic congestion.
- Option (b) Age of signal: The age of the hardware is irrelevant as long as the signal is functioning correctly.
- Option (c) Location of pole: While pole placement is important for visibility and safety, it does not typically cause frequent congestion unless it physically obstructs the roadway.
- Option (d) Signal timing and traffic volume pattern: This is the fundamental engineering approach to traffic management. If the green time is too short for the volume of cars arriving, a queue will build up, leading to congestion.
Which code governs general steel design in India?
A)
IS 456
B)
IS 3370
C)
IS 800
D)
IS 875 Part 2
The correct code for the general design of steel structures in India is IS 800. The current version (IS 800:2007) specifies the requirements for the design of steel structures using the Limit State Method (LSM).
Analysis of other options:
- IS 456: This is the code of practice for Plain and Reinforced Concrete (RCC).
- IS 3370: This code governs the design and construction of concrete structures for the storage of liquids (Water Tanks).
- IS 875 Part 2: This is part of the code for Design Loads for Buildings, specifically dealing with Wind Loads.
The term ‘tender’ in government contracts refers to:
A)
Completion report submitted by a contractor
B)
Drawing set submitted by a contractor to perform the specified work
C)
Bid submitted by a contractor to perform the specified work
D)
Inspection record submitted by a contractor to perform the specified work
In the context of civil engineering and government contracts, a 'Tender' is an invitation for bids for the execution of a specific project. When a contractor responds to this invitation by submitting a formal offer (bid) stating the price and terms under which they are willing to execute the work, that document is referred to as the tender.
Analysis of options:
- Option (a) is incorrect because a completion report is submitted after the work is finished, not at the bidding stage.
- Option (b) is incorrect because drawings are typically provided by the department (client) to the contractor, or submitted as 'shop drawings' during execution, not as the tender itself.
- Option (c) is correct as it accurately describes the tender as a bid/offer to perform work.
- Option (d) is incorrect because inspection records are quality control documents generated during the construction phase.
Theodolite is primarily used to measure:
A)
Horizontal and vertical angles
B)
Vertical distance
C)
Height difference
D)
Compass bearing
A theodolite is a precision optical instrument used in surveying and engineering specifically designed to measure angles in both the horizontal and vertical planes.
1. **Horizontal Angles:** These are measured by rotating the instrument around its vertical axis to determine the angle between two points on a horizontal plane.
2. **Vertical Angles:** These are measured by tilting the telescope around its horizontal axis to determine the angle of elevation or depression relative to the horizon.
Why other options are incorrect:
- **Option b (Vertical distance):** While a theodolite can be used as part of a trigonometric leveling process to calculate vertical distance, it does not measure distance directly; it measures angles.
- **Option c (Height difference):** Similar to vertical distance, height difference is a derived value calculated using the vertical angle and a known horizontal distance, not a direct measurement of the instrument.
- **Option d (Compass bearing):** While some theodolites have integrated compasses, the primary purpose of a theodolite is the measurement of angles. Compass bearings are the primary function of a Prismatic Compass or a Surveyor's Compass.
Which pavement defect is most likely caused by repeated heavy loading?
A)
Bleeding
B)
Rutting
C)
Stripping
D)
Cracking
Step-by-step reasoning: 1. Analysis of the defect: Rutting refers to the longitudinal depressions formed in the wheel paths of a pavement. 2. Cause of Rutting: It is primarily caused by the permanent deformation of the asphalt layers or the underlying subgrade due to repeated heavy axle loads (traffic loading). This is a result of cumulative plastic deformation. 3. Evaluation of other options: (a) Bleeding occurs when excess bitumen rises to the surface, usually due to overheating or excessive binder content, not primarily loading. (c) Stripping is the loss of adhesion between the aggregate and the binder, typically caused by moisture/water penetration. (d) Cracking is a broad term; while fatigue cracking (alligator cracking) is caused by loading, 'Rutting' is the most specific and characteristic defect associated specifically with the 'repeated heavy loading' causing deformation in the wheel paths. Therefore, Rutting is the most accurate answer for the described cause.
Which equipment is used to test aggregate abrasion value?
A)
Impact testing machine
B)
Los Angeles abrasion machine
C)
Ductility machine
D)
CBR testing device
The Aggregate Abrasion Value is a measure of the hardness and resistance of aggregates to wear and degradation. The standard equipment used for this test is the Los Angeles abrasion machine, which consists of a rotating steel drum containing a specified number of abrasive charges (steel balls). As the drum rotates, the aggregates are subjected to both abrasion and impact, simulating the wear and tear they would experience in a pavement.
Analysis of other options:
- a. Impact testing machine: Used to determine the Aggregate Impact Value (AIV), which measures the resistance of aggregates to sudden shock or impact (toughness), not abrasion.
- c. Ductility machine: Used to test the ductility of metals (like steel reinforcement bars), measuring the degree to which a material can sustain plastic deformation under tensile stress.
- d. CBR testing device: The California Bearing Ratio (CBR) test is used to evaluate the mechanical strength of subgrade soil and base course materials, not the abrasion of aggregates.
If contractor’s quoted rates are abnormally low, what risk arises during execution?
A)
Substandard quality or work abandonment
B)
Fast completion
C)
Higher taxes
D)
Bonus claims
In civil engineering estimation and contracting, 'abnormally low bids' (also known as under-quoting) occur when a contractor submits a bid significantly lower than the estimated cost or the average of other bids. This creates a high financial risk during the execution phase. To maintain a profit margin or avoid losses, the contractor may attempt to cut costs by using inferior materials or skipping essential quality control steps, leading to 'substandard quality.' Furthermore, if the contractor realizes the project is financially unsustainable, they may face insolvency or simply stop working, leading to 'work abandonment.'
Analysis of other options:
- Option b (Fast completion) is incorrect because low funding usually leads to slower progress due to lack of resources or labor payment delays.
- Option c (Higher taxes) is incorrect as taxes are statutory and independent of the contractor's quoted rates.
- Option d (Bonus claims) is incorrect because bonuses are typically awarded for early completion or exceptional performance, not as a result of low bidding.
Security deposit is usually deducted from:
A)
Final payment only as percentage of bill value
B)
Material cost as percentage of bill value
C)
Bank guarantee as percentage of bill value
D)
Each running bill as percentage of bill value
In civil engineering contracts, a Security Deposit (SD) is a sum of money retained by the client (owner) to ensure that the contractor completes the work according to the specifications and corrects any defects that may appear during the defect liability period.
1. **Mechanism**: Instead of asking for a lump sum upfront, the security deposit is typically deducted as a fixed percentage (usually 5% to 10%) from every 'Running Account' (RA) bill submitted by the contractor.
2. **Purpose**: This ensures that the client has a financial hold over the contractor throughout the duration of the project, providing leverage to ensure quality and completion.
3. **Why other options are incorrect**:
- Option (a): Deducting only from the final payment is risky for the client, as the contractor might abandon the site before the final bill is processed.
- Option (b): Material cost is a component of the bill, but the SD is calculated on the total value of the work done (bill value), not just the materials.
- Option (c): A Bank Guarantee is an alternative to a cash security deposit (Performance Guarantee), not something from which a deposit is 'deducted'.
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 for the work completed during a specific period.
1. **Why Option (d) is correct**: Large construction projects take months or years to complete. To maintain the contractor's cash flow for labor and materials, payments are made periodically (e.g., monthly or after reaching specific milestones) based on the actual measurement of work executed on-site.
2. **Why Option (a) is incorrect**: A bill prepared once after completion is called the 'Final Bill'.
3. **Why Option (b) is incorrect**: While material at site may be included in some RA bills, the primary purpose of an RA bill is to pay for the total work done (labor + material + overheads), not just materials.
4. **Why Option (c) is incorrect**: The sanction stage is the administrative approval phase before the work even begins; no work has been executed yet, so no bill can be prepared.
The unit of moment of inertia in steel design is:
A)
N/m
B)
kN
C)
kg/m²
D)
mm⁴ or cm⁴
The Moment of Inertia (also known as the second moment of area) is a geometric property of an area that describes how its points are distributed with regard to an axis. Mathematically, it is defined as the integral of the square of the distance from the axis to the element of area: I = ∫y² dA. Since 'y' is a length (measured in mm or cm) and 'dA' is an area (measured in mm² or cm²), the resulting unit is length to the fourth power (L⁴). In steel design, where sections are typically measured in millimeters or centimeters, the standard units are mm⁴ or cm⁴.
Analysis of other options:
- Option (a) N/m is a unit of linear load or stiffness.
- Option (b) kN is a unit of force.
- Option (c) kg/m² is a unit of area density or surface mass.
Which is a disadvantage of steel tanks over RCC tanks?
A)
Easy fabrication
B)
Prone to corrosion
C)
High ductility
D)
Light weight
To determine the disadvantage of steel tanks compared to Reinforced Cement Concrete (RCC) tanks, we evaluate the properties of both materials:
1. **Corrosion (Option b):** Steel is highly susceptible to oxidation (rusting) when exposed to water and air. While coatings and galvanization can mitigate this, it remains a primary disadvantage and requires regular maintenance. RCC, while subject to reinforcement corrosion (carbonation/chloride attack), is generally more durable in wet environments without constant surface treatment.
2. **Fabrication (Option a):** Steel tanks are prefabricated in shops and assembled on-site, making them much faster and easier to construct than RCC tanks, which require formwork, curing, and long setting times. This is an advantage, not a disadvantage.
3. **Ductility (Option c):** Steel is inherently more ductile than concrete. This allows steel tanks to withstand seismic loads or ground settlements better without sudden brittle failure. This is an advantage.
4. **Weight (Option d):** Steel tanks have a much higher strength-to-weight ratio than RCC. They are significantly lighter, reducing the load on the foundation. This is an advantage.
Therefore, the only negative attribute listed is the susceptibility to corrosion.
The widening of pavement on curves is done to:
A)
Counteract centrifugal force and accommodate vehicle turning
B)
Avoid accidents and reduce psychological fear
C)
Increase Road length
D)
Reduce sight distance
Widening of pavement on horizontal curves (known as 'Extra Widening') is necessary for two primary reasons: 1. Mechanical Widening: When a vehicle negotiates a curve, the rear wheels do not follow the same path as the front wheels (off-tracking). This requires additional width to accommodate the vehicle's turning geometry. 2. Psychological Widening: Drivers tend to maintain a greater side clearance from the edge of the pavement on curves due to the centrifugal force acting on the vehicle and the perceived risk, which creates a psychological need for more space. Option (a) correctly captures the physical requirement of accommodating the vehicle's turn and the effect of centrifugal force. Option (b) is a partial reason (psychological), but (a) is more comprehensive. Option (c) is incorrect as widening increases width, not length. Option (d) is incorrect as widening does not reduce sight distance; in fact, sight distance is often improved by removing obstructions on the inside of the curve.
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 engineering works (such as those under the PWD or Local Administration Department), transparency and fair competition are mandatory. To ensure maximum reach and prevent favoritism, public tenders must be advertised through official channels.
1. **e-Tender Portals**: Modern government guidelines (like the General Financial Rules - GFR) mandate the use of electronic procurement systems (e-procurement) to ensure a transparent, paperless, and auditable process.
2. **National Newspapers**: For high-value projects, publishing a 'Notice Inviting Tender' (NIT) in widely circulated national or regional newspapers is a legal requirement to ensure that all eligible contractors are aware of the opportunity.
Other options are incorrect because:
- **Option b**: Private media and social media are supplementary and lack the legal authority or formal verification required for public procurement.
- **Option c**: SMS notifications are used for alerts but cannot serve as the primary legal publication of a tender document.
- **Option d**: Worksite banners are used for project information after a contract is awarded, not for the initial invitation of bids.