Nagarjuna Construction Company Assistant Engineer Interview Questions, Process, and Tips

Q1. 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 ...read more
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Q2. How to prepare BBS
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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 Qu...read more
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Q1. Process of Transmission line construction
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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 prepar...read more
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Q2. Explained right from survey to foundation to erection, Stringing and commissioning
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Q1. Basics of concrete and mortars
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Q2. 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 ens...read more
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Q3. What is segregation?
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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 transportat...read more
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Q4. What is the process of brick work?
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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 reac...read more
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An written test conducted. Technical questions asked

Q1. Higher authorities took interview and asked few questions related to technical knowledge
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Q2. 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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