30+ Shree Datta Travels Interview Questions and Answers

A site engineer is responsible for overseeing construction projects and ensuring they are completed according to plans and specifications. A supervisor is a higher-level position that manages and coordinates the work of site engineers and other construction personnel.

• Site engineer: responsible for overseeing construction projects, ensuring compliance with plans and specifications

• Supervisor: higher-level position that manages and coordinates the work of site engineers and othe...read more

Silk percentage in sand is zero.

• Silk is a natural fiber produced by silkworms, while sand is composed of small particles of minerals.

• Silk and sand have completely different compositions and properties.

• There is no silk present in sand, so the silk percentage in sand is zero.

Construction machinery uses various types of oils depending on their functions.

• There are different types of oils used in construction machinery such as engine oil, hydraulic oil, gear oil, transmission oil, and brake oil.

• Engine oil is used to lubricate the engine and prevent wear and tear.

• Hydraulic oil is used to transfer power in hydraulic systems.

• Gear oil is used to lubricate gears and bearings in gearboxes.

• Transmission oil is used to lubricate the transmission system.

• Brake...read more

Quantity estimation of concrete, steel, and earthwork involves calculating the amount of materials needed for a construction project.

• Calculate the volume of concrete required by multiplying the dimensions of the structure (length, width, height) and adding a suitable wastage factor.

• Estimate the quantity of steel by determining the total length of bars needed based on the structural drawings and specifications.

• For earthwork, calculate the volume of excavation or filling requir...read more

Gears are mechanical components that transmit power and motion between rotating shafts. There are various types of gears.

• Spur gears are the most common type and have straight teeth.

• Helical gears have angled teeth and provide smoother operation.

• Bevel gears transmit power between shafts that are not parallel.

• Worm gears have a screw-like thread and are used for high reduction ratios.

• Planetary gears have a central gear that rotates around other gears.

• Rack and pinion gears convert...read more

Building construction process involves planning, designing, permitting, and construction phases.

• Planning phase includes site selection, feasibility studies, and budgeting.

• Designing phase involves architectural and structural design.

• Permitting phase requires obtaining necessary approvals and permits from local authorities.

• Construction phase includes site preparation, foundation work, structural framing, and finishing.

• Quality control and safety measures are implemented througho...read more

The m20 grade ratio refers to the mix ratio of cement, sand, and aggregate used in concrete construction.

• The m20 grade ratio is commonly used for general construction purposes.

• The ratio for m20 grade concrete is 1:1.5:3, which means 1 part cement, 1.5 parts sand, and 3 parts aggregate by volume.

• For example, if you need to make 1 cubic meter of m20 grade concrete, you would need 1/5 cubic meter of cement, 1.5/5 cubic meter of sand, and 3/5 cubic meter of aggregate.

A centrifugal pump is a mechanical device that uses centrifugal force to transport fluids. There are two types: radial and axial.

• Centrifugal pumps are commonly used in industrial and domestic applications.

• Radial pumps have a volute casing and are used for low flow and high head applications.

• Axial pumps have a propeller and are used for high flow and low head applications.

• Centrifugal pumps are easy to install and maintain.

• They are not suitable for high viscosity fluids or flui...read more

Stress is the force applied per unit area, while strain is the deformation caused by stress.

• Stress is measured in units of force per unit area, such as pounds per square inch (psi) or newtons per square meter (N/m²).

• Strain is the ratio of the change in length or shape of an object to its original length or shape.

• Stress and strain are related by the material's modulus of elasticity, which is a measure of how much the material will deform under stress.

• The stress-strain diagram ...read more

Allowable wastage of steel in construction projects is typically around 2-3%.

• Allowable wastage of steel is usually around 2-3% in construction projects.

• Wastage can occur due to cutting, bending, and handling of steel bars.

• Excessive wastage can lead to cost overruns and delays in construction.

• Contractors should aim to minimize wastage through careful planning and efficient use of materials.

Daily maintenance schedules of machineries

• Check oil levels and top up if necessary

• Inspect and clean filters

• Check for any signs of wear and tear

• Lubricate moving parts

• Check for any leaks or unusual noises

• Perform any necessary repairs or replacements

• Keep a record of maintenance performed

SI and CI engines are types of internal combustion engines used in vehicles and machinery.

• SI engine stands for Spark Ignition engine, also known as gasoline engine.

• CI engine stands for Compression Ignition engine, also known as diesel engine.

• SI engines use a spark plug to ignite the fuel-air mixture, while CI engines use compression to ignite the fuel.

• SI engines are commonly used in cars, motorcycles, and small machinery, while CI engines are used in larger vehicles and machi...read more

Engine failure can be caused by various factors such as overheating, lack of maintenance, wear and tear, and manufacturing defects.

• Overheating due to lack of coolant or oil

• Lack of maintenance such as not changing oil or air filters

• Wear and tear of engine components such as pistons, bearings, and valves

• Manufacturing defects such as faulty parts or poor assembly

• Fuel contamination or incorrect fuel usage

• Improper installation or repairs

• Environmental factors such as water or debri...read more

Knocking is a phenomenon where the air-fuel mixture in the engine cylinder ignites spontaneously before the spark plug fires.

• Knocking is also known as detonation or pinging.

• It can cause engine damage if not addressed.

• It occurs when the air-fuel mixture in the cylinder ignites prematurely due to high pressure and temperature.

• It can be caused by low-quality fuel, incorrect ignition timing, or engine overheating.

• To prevent knocking, use high-quality fuel, maintain proper ignitio...read more

Spare parts of vehicles are essential for maintenance and repair purposes.

• Spare parts include items like tires, batteries, filters, and brake pads.

• It is important to have a well-stocked inventory of spare parts to ensure quick repairs and minimize downtime.

• Regularly updating the stock of spare parts based on demand and usage is crucial for efficient operations.

• Quality of spare parts is key to ensuring the safety and performance of vehicles.

• Having a reliable supplier for spare...read more

Tunnel lining is the process of constructing a protective layer inside a tunnel to provide stability and prevent water ingress.

• Tunnel lining can be done using various methods such as shotcrete, precast concrete segments, and cast-in-place concrete.

• Shotcrete involves spraying a mixture of cement, sand, and water onto the tunnel walls using a high-pressure hose.

• Precast concrete segments are manufactured off-site and then transported to the tunnel where they are assembled to for...read more

Pumps and turbines are used to transfer fluids and convert energy respectively.

• Pumps are used to transfer fluids from one place to another, while turbines are used to convert energy from one form to another.

• Types of pumps include centrifugal, positive displacement, and axial flow pumps.

• Types of turbines include steam, gas, and hydraulic turbines.

• The main difference between pumps and turbines is that pumps add energy to fluids, while turbines extract energy from fluids.

• Pumps a...read more

To repair a hydraulic pump, first identify the problem and then disassemble the pump to replace or repair the faulty parts.

• Identify the problem by checking for leaks, unusual noises, or loss of pressure.

• Disassemble the pump carefully, taking note of the order of parts and any seals or gaskets.

• Inspect the parts for damage or wear, and replace any faulty components.

• Reassemble the pump, making sure all parts are properly aligned and tightened.

• Test the pump to ensure it is functi...read more

Different types of concrete used in construction include ready-mix concrete, precast concrete, high-strength concrete, and lightweight concrete.

• Ready-mix concrete is a mixture of cement, water, and aggregates that is delivered in a truck and poured on site.

• Precast concrete is made in a controlled environment and then transported to the construction site for installation.

• High-strength concrete is designed to withstand heavy loads and is often used in structures like bridges an...read more

Vibrators are used in gantries for compacting concrete and ensuring its strength and durability.

• Vibrators are used to remove air bubbles and excess water from freshly poured concrete.

• They help in achieving proper compaction and density of the concrete.

• Vibrators are commonly used in the construction of bridges, dams, and other large structures.

• They can be handheld or attached to the gantry for larger-scale operations.

• Examples of vibrators used in gantries include internal vibr...read more

Gantry lining is a construction technique used to reinforce and stabilize tunnels or underground structures.

• Gantry lining involves the installation of precast concrete segments or steel plates along the tunnel walls.

• These segments or plates are carefully positioned and secured to form a continuous lining.

• The lining provides structural support, prevents soil or water ingress, and enhances the overall stability of the tunnel.

• Gantry lining can be used in various civil engineerin...read more

To manage a store effectively, one must have a system in place for organizing inventory, tracking incoming and outgoing materials, and ensuring efficient operations.

• Implement a proper inventory management system to keep track of stock levels and reorder when necessary

• Establish clear procedures for receiving and inspecting incoming materials to ensure quality and accuracy

• Create a system for organizing products in the store to optimize space and make it easy to locate items

• Trai...read more

The density of concrete is a measure of its mass per unit volume.

• Density of concrete typically ranges from 2200 to 2500 kg/m³.

• The density can vary depending on the composition and aggregates used.

• Lightweight concrete has lower density, around 1600 to 2000 kg/m³.

• High-density concrete, used for radiation shielding, can have density up to 6000 kg/m³.

The weight of 1m 16 mm steel depends on the density of steel.

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

• The density of steel is approximately 7.85 grams per cubic centimeter

• To calculate the weight of 1m 16 mm steel, we need to calculate its volume first

• The volume of a cylinder (steel rod) can be calculated using the formula: volume = π x radius^2 x height

• In this case, the radius would be half of the diameter (16 mm), which is 8 mm or 0.8...read more

Different types of steel used in construction include carbon steel, alloy steel, stainless steel, and tool steel.

• Carbon steel is the most common type used in construction due to its strength and affordability.

• Alloy steel contains additional elements such as manganese, silicon, and copper to enhance its properties.

• Stainless steel is corrosion-resistant and often used in environments where rust is a concern.

• Tool steel is used for making tools and equipment due to its hardness a...read more

There are several types of water pumps used for different applications.

• Centrifugal pumps

• Submersible pumps

• Reciprocating pumps

• Diaphragm pumps

• Jet pumps

• Gear pumps

• Screw pumps

• Vane pumps

• Axial flow pumps

• Mixed flow pumps

A store is a place where goods are kept for sale, and the store department is responsible for managing inventory, organizing products, and ensuring customer satisfaction.

• A store is a physical location where products are stored and sold to customers.

• The store department is in charge of managing inventory levels to ensure products are always available for customers.

• Store department staff organize products on shelves, create attractive displays, and assist customers with finding...read more

Types of soils used in construction include clay, sand, silt, and gravel.

• Clay: used for lining ponds and as a base for roads

• Sand: used for making concrete and mortar

• Silt: used for filling embankments and as a base for roads

• Gravel: used for drainage and as a base for roads

Types of foundations in construction include shallow foundations, deep foundations, and specialized foundations.

• Shallow foundations: spread footings, mat foundations

• Deep foundations: piles, drilled shafts

• Specialized foundations: caissons, piers

Reinforcement is the process of encouraging or strengthening a behavior by providing a reward or consequence.

• Reinforcement can be positive (adding a reward) or negative (removing a consequence).

• Examples include giving a child a sticker for completing chores (positive reinforcement) or taking away TV time for misbehaving (negative reinforcement).

Steel bars are commonly used in construction for reinforcement purposes.

• Steel bars are categorized based on their composition and properties, such as carbon steel, alloy steel, and stainless steel.

• Different types of steel bars include TMT bars, deformed bars, mild steel bars, and high tensile strength bars.

Different types of bridges include beam bridges, truss bridges, arch bridges, suspension bridges, and cable-stayed bridges.

• Beam bridges are the simplest type, consisting of a horizontal beam supported by piers at each end.

• Truss bridges have a framework of connected elements forming triangular units for support.

• Arch bridges have a curved structure that distributes weight evenly and is often used for longer spans.

• Suspension bridges have cables hanging from towers that support t...read more

Hydraulic circuit of an excavator controls the flow of hydraulic fluid to power various functions of the machine.

• The hydraulic circuit consists of a hydraulic pump, control valves, cylinders, and hydraulic fluid.

• The pump draws in hydraulic fluid and pressurizes it to power the excavator's hydraulic system.

• Control valves regulate the flow of hydraulic fluid to different components of the excavator, such as the boom, arm, and bucket.

• Cylinders use the pressurized hydraulic fluid...read more