40+ RSL Trading Contracting & Services Interview Questions and Answers

Design procedure for PQC using M40 grade concrete

• Minimum cement content of 360kg per cum

• Flexural strength of 4.5MPA and compressive strength of 40MPA after 28-day curing

• Dowel bars and tie bars provided for load transfer and prevention of cracking and deflection

• PQC mix prepared in pre-mix batching plant and transported to site

• Separation membrane and texturing and sawing operations performed for proper finishing

• 28-day curing with sprinkler water and hessian cloth and gunny bags...read more

Design procedure for laying M15 grade concrete with specific requirements for cement content, compressive strength, and compaction.

• Use M15 grade concrete with aggregate and cement ratio of 1:2

• Minimum cement content of 150kg per cum, or 120kg per cum if flyash is more than 20%

• Ensure compressive strength of 10MPA after 7 days curing, with no sample below 7.5MPA

• Ensure DLC premix batching plant material is homogeneous and uniform

• Transport DLC from premix batching plant to site by...read more

The question is about the specifications of different layers in a flexible pavement.

• The embankment layer has a thickness of 3m and is compacted at 95% with large size soil particles and effective CBR as per design.

• The subgrade layer has a total thickness of 500mm and is compacted at 97% with large size soil particles and effective CBR as per design.

• The GSB layer has a total thickness of 300mm and is a mixture of aggregate chips and stone dust with large size grains of 65mm to...read more

Different types of carriage way include single lane, multilane, intermediate lane, two lane, three lane, and four lane.

• Single lane has a width of 3.75m

• Multilane has a width of 3.50m

• Intermediate lane has a width of 5.5m

• Two lane has a width of 7.5m

• Three lane has a width of 10.50m

• Four lane has a width of 7.5m + 7.5m

Grades of concrete, cement, and steel are important in civil engineering.

• Grades of concrete refer to the strength and durability of the concrete mix.

• Common grades of concrete include M10, M15, M20, M25, etc.

• Grades of cement indicate the compressive strength of the cement.

• Common grades of cement include 33, 43, and 53.

• Grades of steel refer to the strength and ductility of the steel used in construction.

• Common grades of steel include Fe250, Fe415, Fe500, etc.

The number of transformer ratings required for 50 households depends on their power consumption and distribution network.

• The power consumption of each household needs to be determined

• The distribution network and voltage level also affect the transformer rating

• Assuming an average power consumption of 1 kW per household, a 50 kW transformer may be required

• However, this can vary greatly depending on the specific circumstances

Yes, I have 3 years of experience working with G.s.b in highway 3D system (Trimble) as an assistant surveyor on a railway project in Chasma, Gujarat.

• Experience working with G.s.b in highway 3D system (Trimble) for 3 years

• Currently working as an assistant surveyor at Ashoka Buildcon on a railway project in Chasma, Gujarat

FIDIC is a standard form of contract used in the construction industry, covering compliance, delay events, and relevant articles.

• FIDIC stands for International Federation of Consulting Engineers

• It provides a framework for construction contracts, including compliance requirements and procedures for handling delay events

• Key articles in FIDIC contracts include those related to variations, claims, and dispute resolution

• I have experience handling FIDIC contracts in previous roles,...read more

DTR structure consists of transformer, rectifier, and filter components.

• Transformer: used to step down the voltage from the power source

• Rectifier: used to convert AC to DC

• Filter: used to smooth out the DC output

• Components may include diodes, capacitors, resistors, and inductors

• Example: DTR structure is commonly used in power supplies for electronic devices

Trade union disputes can be handled through collective bargaining by following a set procedure.

• Establish communication with the union representatives and understand their demands

• Negotiate and come to a mutually beneficial agreement

• If negotiations fail, seek the help of a mediator or arbitrator

• Ensure compliance with legal requirements and company policies

• Maintain a positive relationship with the union to prevent future disputes

Explanation of cess level, embedded length and OHE quality maintenance.

• Cess level is the height difference between the rail top and the OHE contact wire.

• Embedded length is the length of the OHE mast embedded in the foundation.

• OHE quality maintenance involves regular inspection, cleaning, and replacement of worn-out components.

• Proper tensioning of the contact wire and ensuring adequate clearance between the wire and other structures is also important.

• Regular measurement of the...read more

Finishing in construction refers to the final touches and treatments applied to a building's interior and exterior surfaces.

• Finishing includes activities such as painting, tiling, flooring, ceiling installation, and fixture installation.

• The finishing sequence in a building typically starts with structural work, followed by mechanical and electrical installations, and ends with finishing touches.

• Examples of finishing materials include paint, wallpaper, tiles, carpet, wood floo...read more

OHE dependency on Signal, Mast, Earthing and Bonding explained.

• OHE is dependent on signals for safe operation.

• Masts are used to support the overhead wires and provide insulation.

• Obligatory masts are those that are required for safe operation and are placed at specific intervals.

• Earthing and bonding are important for safety and to prevent electrical interference.

• Earthing provides a path for electrical current to flow safely to the ground.

• Bonding connects all metal parts of the...read more

To take work front on sites, clear communication, proper planning, and effective coordination are necessary.

• Establish clear communication channels with all stakeholders involved in the project.

• Plan the work in advance and ensure that all necessary resources are available on site.

• Coordinate with the site team regularly to ensure that work is progressing smoothly and any issues are addressed promptly.

• Ensure that all necessary permits and approvals are obtained before starting w...read more

The volume of concrete refers to the amount of space occupied by concrete.

• Volume of concrete is measured in cubic units (e.g., cubic meters or cubic feet).

• It is calculated by multiplying the length, width, and height of the concrete element.

• For example, if a concrete slab has a length of 5 meters, width of 3 meters, and height of 0.15 meters, the volume of concrete would be 5 x 3 x 0.15 = 2.25 cubic meters.

Kerb painting and road marking are techniques used to designate specific areas on roads for various purposes.

• Kerb painting involves painting the edges of the road, usually in a specific color, to indicate parking restrictions, loading zones, or pedestrian crossings.

• Road marking includes painting lines, symbols, and signs on the road surface to guide traffic, indicate lanes, show pedestrian crossings, and warn of hazards.

• Reflective materials are often used in road marking to i...read more

Embankment is a raised bank or wall built to carry a road or to hold back water.

• Embankment is a raised structure made of earth or other materials to support a road or railway.

• Earthwork process involves moving, processing, and placing soil or rock to create embankments, excavations, or other earth structures.

• Embankments are commonly used in road construction to elevate the road above the surrounding terrain.

• Earthwork process includes cutting, filling, compaction, and grading o...read more

Finalizing CTC involves considering various factors like cost of living, market rates, company budget, and employee qualifications.

• Consider cost of living in the location of posting

• Compare market rates for similar positions in the area

• Ensure the CTC fits within the company's budget constraints

• Take into account the qualifications and experience of the employee

• Negotiate if necessary to reach a mutually beneficial CTC

Store activity involves managing the inward and outward flow of goods in a systematic process.

• Inward process includes receiving goods, checking for quality and quantity, and updating inventory records.

• Outward process involves picking items for delivery, packing, and shipping to customers or other stores.

• Proper documentation and record-keeping are essential for tracking stock levels and ensuring accuracy.

• Regular stock audits help in identifying discrepancies and maintaining in...read more

DTR stands for Data Terminal Ready.

• DTR is a control signal used in serial communication.

• It indicates that a data terminal equipment (DTE) is ready to communicate.

• DTR is typically used to signal the start of a connection or to reset a device.

• In RS-232 communication, DTR is often used to control the flow of data.

• For example, when DTR is set to high, it indicates that the DTE is ready to send or receive data.

Project planning is the process of defining project goals, objectives, tasks, timelines, and resources needed to complete the project.

• Identifying project goals and objectives

• Breaking down the project into smaller tasks

• Creating a timeline for each task

• Allocating resources needed for each task

• Monitoring progress and making adjustments as needed

Power panels wiring can be done for both 230V below and above requirements.

• Power panels can be wired for 230V below by using appropriate gauge wires and ensuring proper connections.

• For 230V above requirements, higher gauge wires and suitable circuit breakers should be used to handle the increased voltage.

• It is important to follow electrical codes and safety guidelines when wiring power panels for different voltage requirements.

The cut length of spiral stirrup for a pile is determined based on the diameter of the pile and the spacing required for the stirrups.

• Calculate the circumference of the pile using the formula C = π * d, where d is the diameter of the pile.

• Determine the spacing required for the spiral stirrups based on design specifications.

• Multiply the circumference of the pile by the number of required spiral stirrups to get the total length needed.

• Add extra length for overlapping and bendin...read more

Trade unions at site can be handled by effective communication, negotiation and conflict resolution.

• Establish a positive relationship with the union representatives

• Listen to their concerns and address them in a timely manner

• Negotiate and compromise on issues to reach a mutually beneficial agreement

• Create a grievance redressal mechanism to resolve conflicts

• Ensure compliance with labor laws and regulations

• Provide a safe and healthy work environment for employees

• Train managers a...read more

5S of Store refers to Sort, Set in order, Shine, Standardize, Sustain. Process of store activities involves receiving, storing, issuing, and inventory management.

• Sort: Remove unnecessary items from the store to create more space and improve efficiency.

• Set in order: Organize items in a logical manner for easy access and retrieval.

• Shine: Keep the store clean and well-maintained to ensure a safe and healthy work environment.

• Standardize: Establish standard operating procedures fo...read more

The type of plaster used, its thickness, and the dosage of waterproofing depend on the specific requirements of the project.

• Type of plaster can vary based on the project requirements, such as gypsum plaster, cement plaster, or lime plaster.

• The thickness of the plaster is typically around 12-15mm for internal walls and 20mm for external walls.

• Waterproofing dosage depends on the type of waterproofing material used, such as liquid waterproofing membranes or cementitious waterpro...read more

CCTV installation involves mounting cameras, running cables, and configuring devices for monitoring and recording.

• Mount cameras in strategic locations for optimal coverage

• Run cables to connect cameras to recording devices

• Configure recording devices for continuous monitoring and storage

• Set up remote access for viewing footage from anywhere

Planning is the process of setting goals, determining the actions needed to achieve those goals, and creating a timeline for completion.

• Planning involves identifying objectives and defining the steps required to reach them.

• It includes creating a detailed schedule or timeline to ensure tasks are completed in a timely manner.

• Effective planning considers resources, constraints, and potential risks.

• It helps in organizing and prioritizing tasks, allocating resources efficiently, a...read more

Productivity of machinery and manpower is crucial for efficient operations.

• Efficient machinery and skilled manpower can increase productivity.

• Regular maintenance of machinery can prevent downtime and increase productivity.

• Proper training and motivation of manpower can also improve productivity.

• Use of automation and technology can further enhance productivity.

• Productivity can be measured using metrics such as output per hour or per employee.

Standard thumb rule in estimation

• Thumb rule is a rough estimate based on experience

• It is not accurate and can vary based on project

• Example: 1 hour per page for content writing

• Example: 1 month per developer for a software project

DTC structure stands for Direct Torque Control structure, a control method used in AC motor drives for precise torque and speed control.

• DTC structure is a control technique used in AC motor drives to directly control torque and flux without the need for a separate speed controller.

• It is based on the principle of controlling the torque and flux by selecting the appropriate voltage vectors in the motor.

• DTC structure offers fast and accurate torque response compared to tradition...read more

Various construction machineries used in the industry

• Excavators

• Bulldozers

• Cranes

• Dump trucks

• Concrete mixers

Volume of concrete refers to the amount of space occupied by concrete.

• Volume of concrete is measured in cubic meters or cubic feet.

• It is calculated by multiplying the length, width, and height of the concrete structure.

• For example, if a concrete slab is 10 meters long, 5 meters wide, and 0.15 meters thick, the volume of concrete would be 7.5 cubic meters.

• The volume of concrete is an important factor in determining the amount of materials needed for a construction project.

Transformer types include step-up, step-down, isolation, autotransformer, and distribution transformers.

• Step-up transformer increases voltage output

• Step-down transformer decreases voltage output

• Isolation transformer provides electrical isolation between primary and secondary windings

• Autotransformer has a single winding with multiple taps for different voltage levels

• Distribution transformer is used to supply power to residential and commercial areas

Kerb laying is the process of installing and positioning curbs along the edges of roads or pavements.

• Kerb laying involves setting out the alignment and levels for the curbs.

• The curbs are then placed and fixed in position using concrete or other suitable materials.

• Kerb laying helps define the edges of roads, provide structural support, and prevent vehicles from driving off the road.

• Properly laid curbs enhance the overall aesthetics and functionality of the road or pavement.

• Exa...read more

PQC laying stands for Pavement Quality Concrete laying, which is the final layer of concrete pavement on roads.

• PQC laying is the process of laying the final layer of concrete pavement on roads.

• It is done after the base and sub-base layers have been prepared and compacted.

• PQC laying ensures a smooth and durable surface for vehicles to travel on.

• Proper curing of PQC is essential to prevent cracks and ensure longevity.

• Examples of PQC laying can be seen on highways and city roads...read more

RCC drain is a reinforced concrete drain used for efficient drainage of rainwater or wastewater.

• RCC drain is made of reinforced concrete to provide strength and durability.

• It is used to efficiently channel rainwater or wastewater away from roads, buildings, or other structures.

• RCC drains come in various shapes and sizes depending on the specific drainage requirements.

• These drains are commonly used in urban areas to prevent waterlogging and flooding.

• Regular maintenance is requ...read more

Types of motors include AC motors, DC motors, synchronous motors, and induction motors.

• AC motors: Alternating current motors that are commonly used in household appliances and industrial applications.

• DC motors: Direct current motors that are used in applications where speed control is important, such as in electric vehicles.

• Synchronous motors: Motors that operate at a fixed speed and are often used in applications where precise timing is required, such as in clocks.

• Induction ...read more

CT stands for Current Transformer and PT stands for Potential Transformer. They are used in electrical systems for measurement and protection purposes.

• CT is used to measure current in high voltage circuits by stepping down the current to a safe level for measurement.

• PT is used to measure voltage in high voltage circuits by stepping down the voltage to a safe level for measurement.

• Both CT and PT are essential components in power systems for accurate measurement and protection ...read more

A store is a physical or virtual location where goods or services are kept for sale or distribution.

• Stores can be retail stores, online stores, warehouses, etc.

• They typically hold inventory of products for customers to purchase.

• Stores can also refer to a place where items are stored for future use or distribution.

Axial load on column refers to the vertical force acting on the column, typically due to the weight of the structure it supports.

• Axial load is the force that acts along the longitudinal axis of the column.

• It is important to consider axial load in column design to ensure structural stability.

• Examples of factors affecting axial load include dead loads, live loads, and wind loads on the structure.

LA, AB switch is used in electrical engineering to switch between two different signal sources or destinations.

• LA, AB switch is commonly used in audio and video equipment to switch between different inputs or outputs.

• It allows for easy switching between two different signal sources or destinations without having to physically disconnect and reconnect cables.

• The switch typically has two positions - one for each signal source or destination.

• Examples of LA, AB switches include m...read more

Bitumen is a sticky, black, highly viscous liquid or semi-solid form of petroleum.

• Bitumen is commonly used in road construction for asphalt pavement.

• It is also used in waterproofing products, such as roofing felt and sealing compounds.

• Bitumen is a byproduct of the distillation of crude oil.

• It is composed of complex hydrocarbons and contains sulfur, nitrogen, and oxygen compounds.

NOTE-5S is a system used for organizing and categorizing inventory in a store.

• NOTE-5S is a method of organizing inventory based on five principles: Sort, Set in order, Shine, Standardize, and Sustain.

• Sort involves removing unnecessary items from inventory to improve efficiency.

• Set in order involves arranging items in a logical and efficient manner.

• Shine involves keeping the inventory area clean and organized.

• Standardize involves creating consistent processes for inventory man...read more

Depreciation is the allocation of the cost of a tangible asset over its useful life.

• Depreciation is a non-cash expense that reduces the value of an asset over time.

• Common methods of depreciation include straight-line, double-declining balance, and units of production.

• Depreciation is important for accurately reflecting the true value of assets on the balance sheet.

• It is crucial for financial reporting and tax purposes.

• Depreciation expense is recorded on the income statement an...read more

Government grants are typically recognized as income when they are received, but may need to be recognized as deferred income and recognized over time if they are intended to fund specific future expenses.

• Government grants are usually recognized as income when received

• However, if the grant is intended to fund specific future expenses, it may need to be recognized as deferred income and recognized over time

• The treatment of government grants may vary depending on the specific t...read more