100+ Site Engineer Interview Questions and Answers for Freshers

Shuttering work involves creating formwork for concrete structures before pouring concrete.

• Prepare the area by leveling and compacting the ground

• Construct the formwork using plywood, timber, or steel

• Install necessary supports and bracing to hold the formwork in place

• Ensure the formwork is watertight to prevent leakage of concrete

• Remove the formwork after the concrete has cured

• Inspect the quality of the shuttering work before pouring concrete

Corrosion resistant bars are not used due to their higher cost and limited availability.

• Corrosion resistant bars are more expensive compared to regular steel bars.

• Corrosion resistant bars may not be readily available in all locations.

• In some cases, the level of corrosion in the environment may not warrant the use of corrosion resistant bars.

• Proper concrete cover and other protective measures can be sufficient to prevent corrosion of regular steel bars.

Staggered bar spacing should be at least 1.5 times the diameter of the bar, and lapping distance should be at least 50 times the diameter of the bar.

• Staggered bar spacing should be minimum 1.5 times the diameter of the bar

• Lapping distance should be minimum 50 times the diameter of the bar

Knowledge of material is crucial for a Site Engineer to ensure proper selection, usage, and handling of construction materials.

• Understanding the properties and characteristics of different materials

• Knowledge of material testing and quality control procedures

• Ability to read and interpret material specifications and drawings

• Familiarity with local building codes and regulations

• Awareness of environmental impact and sustainability of materials

• Examples: concrete, steel, wood, aspha...read more

Retarder in concrete mix is a chemical additive used to slow down the setting time of concrete.

• Retarders help in preventing the concrete from setting too quickly, allowing more time for placement and finishing.

• They are commonly used in hot weather conditions to prevent premature setting.

• Examples of retarders include lignosulfonates, sugars, and citric acid.

Construction refers to the process of building or assembling structures, infrastructure, or buildings.

• Construction involves planning, designing, and executing a project.

• It includes activities such as excavation, foundation work, framing, roofing, and finishing.

• Construction can be for residential, commercial, or industrial purposes.

• It requires the use of various tools and equipment, as well as skilled labor.

• Examples of construction projects include building a house, constructi...read more

Initial setting time is the time taken for the cement to harden to a certain degree, while final setting time is the time taken for the cement to completely harden.

• Initial setting time is typically around 30 minutes to 1 hour after adding water to the cement.

• Final setting time is usually around 2 to 4 hours after adding water to the cement.

• Setting time can vary based on the type of cement and environmental conditions.

• Setting time can be tested using Vicat apparatus.

Types of grounding include earthing, grounding through rods, and grounding through plates.

• Earthing: connecting the electrical system to the ground to prevent electric shock and protect equipment

• Grounding through rods: using metal rods buried in the ground to provide a path for electrical currents to dissipate

• Grounding through plates: using metal plates connected to the electrical system and buried in the ground for grounding purposes

There are several types of pipe joints including threaded, flanged, welded, soldered, and brazed joints.

• Threaded joints are commonly used for small diameter pipes.

• Flanged joints are used for larger diameter pipes and high-pressure applications.

• Welded joints are permanent and require skilled labor.

• Soldered joints are used for copper pipes in plumbing applications.

• Brazed joints are similar to soldered joints but use a higher temperature and filler metal.

M25 ratio is a common concrete mix ratio. To calculate the quantity of one cubic meter of concrete, you need to know the ratio of cement, sand, and aggregate.

• M25 ratio is 1:1:2 (1 part cement, 1 part sand, 2 parts aggregate)

• To calculate the quantity of one cubic meter of concrete, you need to add the ratios together (1+1+2=4)

• Assuming the total volume of concrete is 1 cubic meter, the quantity of each material would be: Cement = 1/4 cubic meter, Sand = 1/4 cubic meter, Aggrega...read more

Site problems can be managed by identifying the root cause, developing a plan of action, and implementing solutions.

• Identify the root cause of the problem

• Develop a plan of action to address the problem

• Implement solutions to resolve the problem

• Communicate with stakeholders to keep them informed

• Document the problem and the steps taken to resolve it

I have a strong technical knowledge about pipeline design, construction, and maintenance.

• I am familiar with different types of pipelines such as oil, gas, water, and sewage pipelines.

• I have experience in designing pipeline routes, selecting materials, and calculating pressure drops.

• I am knowledgeable about pipeline construction techniques, including welding, trenching, and backfilling.

• I am skilled in pipeline inspection and maintenance, including leak detection, corrosion con...read more

Quantities of cement, sand, and coarse aggregate depend on the mix design and required strength of concrete.

• The mix design determines the ratio of cement, sand, and coarse aggregate.

• The strength of concrete required also affects the quantities of materials used.

• The water-cement ratio is also an important factor in determining the quantities of materials.

• The quantities are usually expressed in terms of weight or volume.

• For example, a common mix design for concrete is 1:2:3, wh...read more

A raft is a type of foundation that spreads the load of a building over a large area.

• Raft foundation is a type of shallow foundation.

• It is used when the soil is weak and cannot support the weight of the building.

• It consists of a thick concrete slab that extends over the entire area of the building.

• The slab is reinforced with steel bars to provide additional strength.

• Examples of buildings that use raft foundation include high-rise buildings, bridges, and industrial structures.

Analog signals are continuous signals that vary in amplitude and frequency over time.

• Analog signals can take on any value within a certain range

• They are used in audio transmission, video transmission, and many other applications

• Analog signals are susceptible to noise and distortion

• Examples include sound waves, voltage levels, and temperature readings

Digital signals are discrete, quantized representations of analog signals used in digital communication systems.

• Digital signals consist of a series of binary values (0s and 1s).

• They are used in digital devices such as computers, smartphones, and digital cameras.

• Digital signals are more resistant to noise compared to analog signals.

• Examples of digital signals include Ethernet, USB, HDMI, and WiFi signals.

The weight of steel can be calculated using the formula: weight = volume x density

• To calculate the weight of steel, you need to know the volume and density of the steel

• The volume of steel can be calculated using the formula: volume = length x width x height

• The density of steel is typically around 7850 kg/m^3

• Multiply the volume by the density to get the weight of steel

HDD machine uses a rotating drill to bore underground tunnels for laying pipes or cables.

• HDD stands for Horizontal Directional Drilling

• The machine uses a drill stem with a cutting head to bore through soil and rock

• The drill stem is rotated by a motor and pushed forward by hydraulic pressure

• The machine can steer the drill head to follow a predetermined path

• The borehole is then enlarged using a reamer to create a tunnel for the pipe or cable

• HDD is commonly used for installing u...read more

Water cement ratio is the ratio of the weight of water to the weight of cement used in a concrete mix.

• Water cement ratio affects the strength and durability of concrete.

• Lower water cement ratio results in stronger concrete but may be difficult to work with.

• Typical water cement ratio ranges from 0.4 to 0.6 for normal strength concrete.

• Excess water can lead to lower strength and durability of concrete.

Soil capacity can be measured by conducting a soil test to determine its bearing capacity.

• Conduct a soil test to determine the soil's bearing capacity

• Use a penetrometer to measure the soil's resistance to penetration

• Calculate the soil's bearing capacity based on the test results

• Factors that affect soil capacity include soil type, moisture content, and compaction

• Soil capacity is important in determining the type and size of foundation to be used in construction

Plastering is a process of applying a thin layer of cement mortar over the surface of walls and ceilings.

• Prepare the surface by cleaning and dampening it

• Apply a coat of primer to improve adhesion

• Mix plastering material with water to form a smooth paste

• Apply the first coat of plaster using a trowel

• Allow the first coat to dry and then apply the second coat

• Smooth and level the surface with a float or trowel

• Finish the surface with a final coat of plaster

• Allow the plaster to dry a...read more

Load refers to the amount of force or weight that a structure or material can withstand. There are different types of loads that can affect a structure.

• Types of loads include dead load, live load, wind load, seismic load, and snow load.

• Dead load is the weight of the structure itself and any permanent fixtures or equipment.

• Live load is the weight of people, furniture, and other temporary items that may be present in the structure.

• Wind load is the force exerted by wind on the s...read more

The size of concrete cube typically used for testing is 150mm x 150mm x 150mm.

• Standard size for concrete cube testing is 150mm x 150mm x 150mm

• Other common sizes include 100mm x 100mm x 100mm and 200mm x 200mm x 200mm

• Size may vary depending on specific project requirements

A diode is a semiconductor device that allows current to flow in one direction only.

• Semiconductor device

• Allows current flow in one direction

• Commonly used in rectifiers and voltage regulators

Modbus is a communication protocol used for transmitting information between electronic devices over serial lines.

• Modbus is commonly used in industrial automation for connecting electronic devices such as programmable logic controllers (PLCs) and sensors.

• It is a master-slave protocol, where a master device initiates communication and slave devices respond to requests.

• Modbus messages typically include information such as device addresses, function codes, data values, and error...read more

S.M.P.S. stands for Switched Mode Power Supply.

• S.M.P.S. is a type of power supply that uses a switching regulator to convert electrical power efficiently.

• It is commonly used in electronic devices such as computers, TVs, and LED lights.

• S.M.P.S. is more efficient and lighter than traditional linear power supplies.

• It provides a stable output voltage regardless of input voltage fluctuations.

A transducer is a device that converts one form of energy into another form.

• Transducers can convert various types of energy such as electrical, mechanical, thermal, or optical.

• Examples of transducers include microphones (sound to electrical), speakers (electrical to sound), and thermocouples (thermal to electrical).

Electricity is a form of energy resulting from the movement of charged particles.

• Electricity is the flow of electrons through a conductor.

• It can be generated by various means such as chemical reactions, nuclear reactions, and electromagnetic induction.

• Electricity is used to power various devices and appliances such as lights, computers, and refrigerators.

• It can be dangerous if not handled properly and can cause electric shock or fire.

• Electricity can be measured in units of vo...read more

Under and over reinforcement in beams and columns refers to the amount of reinforcement provided in relation to the required strength of the structure.

• Under reinforcement occurs when the amount of reinforcement provided is less than what is required for the structure to carry the design loads.

• Over reinforcement occurs when the amount of reinforcement provided is more than what is required for the structure, leading to wastage of materials and potential construction issues.

• Pro...read more

Concrete mix refers to the combination of ingredients used to create concrete, including cement, aggregates, water, and admixtures.

• Concrete mix typically consists of cement, aggregates (such as sand and gravel), water, and sometimes admixtures.

• The ratio of these ingredients can vary depending on the desired strength, workability, and durability of the concrete.

• For example, a common concrete mix for general use is 1 part cement, 2 parts sand, 3 parts gravel, and enough water t...read more

Honeycomb and bleeding are terms used in concrete construction to describe surface defects.

• Honeycomb refers to voids or gaps left in the concrete surface due to poor compaction.

• Bleeding is the process where excess water in the concrete mix rises to the surface, leaving a layer of water on top.

• Both honeycomb and bleeding can weaken the concrete and affect its durability.

• Proper compaction and curing techniques can help prevent honeycomb and bleeding in concrete construction.

Piles are vertical structural elements used to transfer loads from the superstructure to the underlying soil or rock.

• Types of piles include driven piles, cast-in-place piles, and helical piles.

• Driven piles are installed by driving them into the ground using impact hammers or vibratory hammers.

• Cast-in-place piles are formed by pouring concrete into a drilled hole in the ground.

• Helical piles are screwed into the ground using a rotating helical plate.

• Piles can also be classified...read more

Clear cover to main reinforcement is the distance between the outer surface of concrete and the nearest surface of the reinforcement.

• Clear cover is important to protect the reinforcement from corrosion and fire damage.

• It is specified in the design and varies depending on the type of structure and environmental conditions.

• For example, in a residential building, the clear cover may be around 25mm to 50mm.

• In a marine structure, the clear cover may need to be increased to 75mm or...read more

Ohm's law relates voltage, current, and resistance in an electrical circuit.

• Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points.

• The formula for Ohm's law is V = IR, where V is voltage, I is current, and R is resistance.

• Ohm's law can be used to calculate the voltage, current, or resistance in a circuit, given the other two values.

• Ohm's law is fundamental to the study of electrical engineering an...read more

The staircase angle depends on the height and length of the stairs. It is usually between 30 to 45 degrees.

• Staircase angle is the angle between the horizontal and the slope of the stairs.

• It is important to consider the comfort and safety of users when determining the staircase angle.

• The angle should not be too steep or too shallow.

• The standard staircase angle is between 30 to 45 degrees.

• Factors such as building codes, space availability, and user needs can affect the staircas...read more

Torque is a rotational force while thrust is a linear force.

• Torque is the force that causes an object to rotate around an axis.

• Thrust is the force that propels an object in a linear direction.

• Torque is measured in Newton-meters (Nm) while thrust is measured in Newtons (N).

• Examples of torque include turning a wrench or opening a door while examples of thrust include a rocket taking off or a car accelerating.

• Both torque and thrust are important in engineering and mechanics.

Quality can be checked through various methods and techniques.

• Conducting inspections and audits

• Performing tests and measurements

• Reviewing documentation and records

• Ensuring compliance with standards and regulations

• Using quality control tools and techniques

• Monitoring and analyzing data

• Implementing corrective and preventive actions

Anchorage length is the length of reinforcement required to transfer the load from the structure to the anchor or support.

• Anchorage length is determined by the type of reinforcement and the design load.

• It is important to ensure that the anchorage length is sufficient to prevent failure.

• Examples of anchorage length include the length of rebar embedded in concrete or the length of tendons in post-tensioned structures.

Bar bending schedule is a document that provides details of reinforcement steel bars used in construction.

• It includes information like bar diameter, length, shape, and number of bars required for each structural element.

• It helps in estimating the quantity of steel required for a project and ensures that the reinforcement is placed correctly.

• It is prepared by a structural engineer or a detailer and is used by the site engineer for construction.

• It is an important document for e...read more

Bleeding is the process of air escaping from fresh concrete mix and rising to the surface.

• Bleeding occurs when water in the concrete mix rises to the surface due to settlement of solid particles.

• It can lead to surface defects if not properly managed.

• Bleeding can be reduced by using proper mix design and techniques like vibration or adding admixtures.

• Excessive bleeding can weaken the surface of the concrete.

• Examples: Water accumulating on the surface of freshly poured concrete...read more

Cable laying involves the process of installing cables in a specific location. IR value types of batti refer to the insulation resistance value of electrical equipment.

• Cable laying involves planning the route, trenching, laying the cables, and backfilling.

• IR value types of batti refer to the insulation resistance value of electrical equipment, which is crucial for ensuring safety and preventing electrical faults.

• Examples of IR value types include Class A, Class B, and Class C...read more

M indicates the mix design of concrete in M25, where M stands for Mix and 25 represents the compressive strength of concrete in N/mm^2 after 28 days.

• M indicates the mix design of concrete

• 25 represents the compressive strength of concrete in N/mm^2 after 28 days

• Different grades of concrete have different M values, such as M20, M30, etc.

M20 is a type of concrete mix commonly used in construction for bridges and other structures.

• M20 refers to the mix ratio of cement, sand, and aggregate in concrete, with 1 part cement, 1.5 parts sand, and 3 parts aggregate.

• It is a commonly used grade of concrete for medium strength applications in construction.

• M20 concrete is suitable for foundations, beams, columns, and slabs in bridges and buildings.

• The strength of M20 concrete is typically around 20 megapascals (MPa) after...read more

DI stands for Direct Instruction, a teaching method where the teacher leads the students in learning. AI stands for Artificial Intelligence, the simulation of human intelligence processes by machines.

• DI involves the teacher directly instructing students on the content and skills to be learned.

• AI involves machines performing tasks that typically require human intelligence, such as visual perception, speech recognition, decision-making, and language translation.

• DI is a traditio...read more

The number of bricks required for a 1 cubic meter brick wall depends on the size of the bricks used.

• Standard size bricks are 190mm x 90mm x 90mm

• For a 1 cum brick wall using standard size bricks, approximately 500 bricks are needed

• Different brick sizes will require different quantities

A CCTV camera is a surveillance device that captures and records video footage for security purposes.

• CCTV stands for Closed Circuit Television.

• It is commonly used in public spaces, businesses, and homes to monitor and deter criminal activity.

• CCTV cameras can be connected to a network for remote viewing and recording.

• They are often equipped with features like motion detection and night vision.

• The recorded footage can be used as evidence in investigations or for reviewing incid...read more

RCC stands for Reinforced Cement Concrete.

• RCC is a composite material made of cement, sand, aggregates, and reinforcement steel.

• It is used in construction for making beams, columns, slabs, and other structural elements.

• The reinforcement steel is added to provide tensile strength to the concrete.

• RCC structures are durable, strong, and can withstand heavy loads and adverse weather conditions.

• Examples of RCC structures include bridges, dams, high-rise buildings, and retaining wa...read more