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Nagarjuna Construction Company

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10+ Ingenx Technology Interview Questions and Answers

Updated 9 Nov 2024
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Q1. Why do we take only 1 set of cube sample at a casting of concrete of 5 or less than 5 Meter cube.

Ans.

Only 1 set of cube sample is taken at a casting of concrete of 5 or less than 5 Meter cube to save cost and time.

  • Taking multiple samples would increase the cost of testing.

  • The strength of concrete is usually consistent within a small volume.

  • ASTM C31 allows for only 1 set of samples for small volume concrete.

  • If the first set of samples fails, additional samples can be taken for verification.

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Q2. How do we take slump for casting of concrete and what if when we go rise about 50 meter height ...is their any difference in slump value as we go rise or in high rise buildings

Ans.

Slump for casting of concrete is measured using a cone. Slump value may decrease as height increases in high rise buildings.

  • Slump is measured using a cone and the difference between the height of the cone and the height of the concrete after it settles is the slump value.

  • As height increases in high rise buildings, the pressure on the concrete increases, which may cause the slump value to decrease.

  • To maintain the desired slump value, additives such as plasticizers or superplas...read more

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Q3. What if we r doing a casting of concrete and in the meantime rain comes and continue for 2 days what would be the right bonding agent for recasting of concrete

Ans.

The right bonding agent for recasting of concrete after rain would be a polymer-modified cementitious bonding agent.

  • The surface should be cleaned and dried before applying the bonding agent.

  • The bonding agent should be applied in a thin layer using a brush or roller.

  • The recasting of concrete should be done within the specified time frame mentioned by the bonding agent manufacturer.

  • Examples of polymer-modified cementitious bonding agents are SikaLatex R and Ardex P 82.

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Q4. Shear force and bending moment description and calculation..

Ans.

Shear force is the force perpendicular to the beam and bending moment is the torque that causes bending of the beam.

  • Shear force is calculated by finding the algebraic sum of all the forces acting on one side of the beam.

  • Bending moment is calculated by finding the algebraic sum of all the moments acting on one side of the beam.

  • Shear force and bending moment diagrams are used to visualize the distribution of these forces along the length of the beam.

  • These calculations are impor...read more

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Q5. What do you mean by slump test?

Ans.

Slump test is a concrete testing method to measure the consistency and workability of fresh concrete.

  • Slump test is performed by filling a mold with fresh concrete, then removing the mold and measuring how much the concrete slumps or settles.

  • The result of the slump test indicates the workability of the concrete mix - a higher slump value indicates higher workability.

  • The slump test is commonly used in construction to ensure the concrete mix meets the desired consistency for pro...read more

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Q6. What is the process of brick work?

Ans.

The process of brick work involves laying bricks in a specific pattern using mortar to create walls or structures.

  • Prepare the surface by cleaning and dampening it

  • Lay a bed of mortar on the surface

  • Place the bricks in the desired pattern, ensuring they are level and aligned

  • Use a trowel to add more mortar between the bricks to secure them in place

  • Repeat the process for each layer of bricks until the desired height is reached

  • Finish by filling any gaps with mortar and smoothing th...read more

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Q7. What is minimum cement used for M30 grade of concrete. Answer is 320 kg

Ans.

Minimum cement required for M30 grade of concrete is 320 kg.

  • M30 grade of concrete requires a minimum cement content of 320 kg/m3

  • The cement content may vary based on factors such as water-cement ratio, aggregate type, and quality of cement used

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Q8. Details for RCC road construction with specifications

Ans.

RCC road construction involves using reinforced concrete for durability and strength.

  • RCC stands for Reinforced Cement Concrete

  • Specifications include using high-quality cement, aggregates, and steel reinforcement

  • Proper compaction and curing are essential for durability

  • Thickness of the RCC road depends on traffic load and subgrade conditions

  • Joint spacing should be as per design specifications

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Q9. Construction materials in details

Ans.

Construction materials are substances used for building and construction purposes.

  • Construction materials include cement, concrete, bricks, steel, wood, and glass.

  • Cement is a binding agent used in the production of concrete.

  • Concrete is a mixture of cement, sand, gravel, and water, used for construction.

  • Bricks are rectangular blocks made of clay or concrete, used for building walls.

  • Steel is a strong and durable material used for structural purposes.

  • Wood is commonly used for fra...read more

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Q10. Describe the whole process of piling

Ans.

Piling is a construction technique used to strengthen the foundation of a building by driving piles into the ground.

  • Piling involves driving long, slender columns (piles) into the ground to provide support for structures.

  • The process starts with site investigation to determine soil conditions and load-bearing capacity.

  • Piles can be made of concrete, steel, or timber, depending on the project requirements.

  • Piles are driven into the ground using various methods such as impact hamme...read more

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Q11. Size of covering block

Ans.

The size of covering block is determined based on the type of structure and its requirements.

  • The size of covering block is usually specified in the design drawings or specifications.

  • It is important to consider the dimensions and spacing of reinforcement bars when determining the size of covering block.

  • The covering block should provide adequate protection to the reinforcement bars from fire, corrosion, and other environmental factors.

  • The size of covering block may vary dependi...read more

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Q12. Some workings activities of Building construction

Ans.

Building construction activities include excavation, foundation work, framing, roofing, electrical work, plumbing, and finishing.

  • Excavation: Digging the foundation and preparing the site

  • Foundation work: Pouring concrete and setting the foundation

  • Framing: Building the structure's skeleton with wood or steel beams

  • Roofing: Installing the roof materials

  • Electrical work: Wiring the building for electricity

  • Plumbing: Installing pipes and fixtures for water and sewage

  • Finishing: Adding...read more

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Q13. What is segregation?

Ans.

Segregation is the separation of different components of a mixture based on their physical properties.

  • Segregation occurs when particles of different sizes, shapes, or densities separate from each other.

  • For example, in a concrete mix, larger aggregates tend to settle at the bottom while smaller particles rise to the top.

  • Segregation can also occur in granular materials like sand and gravel during handling and transportation.

  • Proper mixing and handling techniques can help prevent...read more

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Q14. Length of development

Ans.

The length of development refers to the duration it takes to complete a project or task.

  • The length of development can vary depending on the complexity of the project.

  • Factors such as team size, resources, and scope can also impact the length of development.

  • It is important to set realistic timelines and milestones to ensure efficient development.

  • For example, a simple website development project may take a few weeks, while a complex software application may take several months o...read more

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Q15. CMDI AND HDPE DIFFERENCE

Ans.

CMDI and HDPE are two different types of plastic materials used in various applications.

  • CMDI stands for Chlorinated Polyethylene Modified Polyethylene and is a thermoplastic elastomer used in wire and cable insulation, automotive parts, and roofing membranes.

  • HDPE stands for High-Density Polyethylene and is a thermoplastic polymer used in packaging, pipes, and construction materials.

  • CMDI has better resistance to chemicals and weathering than HDPE.

  • HDPE has better stiffness and ...read more

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Q16. Process of Transmission line construction

Ans.

Transmission line construction involves planning, design, material procurement, site preparation, tower erection, conductor stringing, and testing.

  • Planning involves route selection, environmental impact assessment, and obtaining necessary permits.

  • Design includes determining tower locations, conductor size, and insulator type.

  • Material procurement involves sourcing towers, conductors, insulators, and hardware.

  • Site preparation includes clearing vegetation, leveling land, and set...read more

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Q17. How to prepare BBS

Ans.

BBS preparation involves calculating quantities of steel reinforcement required for construction projects.

  • Start by studying the structural drawings and specifications provided

  • Identify the different structural elements like beams, columns, slabs, etc.

  • Calculate the total length of each type of reinforcement required

  • Use standard formulas and codes to determine the quantity of steel bars needed

  • Prepare a detailed Bill of Quantities (BOQ) listing all the steel reinforcement materia...read more

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Interview Process at Ingenx Technology

based on 21 interviews
1 Interview rounds
Technical Round
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