Nagarjuna Construction Company Interview Questions, Process, and Tips

Q1. HR asking about qualification and experience releted questions.
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Q1. How to calculate shuttering quantity.
Ans. 
Shuttering quantity can be calculated by determining the surface area of the formwork and multiplying it by the depth of the concrete.
• Measure the length and width of the formwork

• Calculate the surface area by multiplying the length and width

• Multiply the surface area by the depth of the concrete to get the shuttering quantity

• Account for any additional formwork needed for corners or edges
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Q2. How to calculate steel quantity.
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Steel quantity can be calculated by using the formula: (D^2/162) x Length of steel
• Determine the diameter of the steel

• Calculate the length of the steel required

• Use the formula (D^2/162) x Length of steel to calculate the steel quantity

• Consider wastage and additional steel required for overlaps and joints
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Q3. What is the initial seting time
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Initial setting time is the time taken by cement to harden to a certain degree.
• Initial setting time is the time taken by cement to harden to a certain degree.

• It is the time elapsed between the moment water is added to the cement and the time when the paste starts losing its plasticity.

• The initial setting time of cement is generally around 30 minutes to 1 hour.

• It is an important property of cement as it determines the t...read more
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Q4. How to lap provide in column.
Ans. 
Lapping provides a smooth surface finish to the column.
• Clean the column thoroughly before lapping.

• Apply a lapping compound to the column surface.

• Use a lapping tool to rotate and move up and down the column.

• Continue lapping until the desired surface finish is achieved.

• Clean the column again after lapping to remove any residue.
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Q5. What is density of RCC.and pcc
Ans. 
Density of RCC is around 2500 kg/m3 and PCC is around 2400 kg/m3.
• RCC stands for Reinforced Cement Concrete and PCC stands for Plain Cement Concrete.

• Density of RCC depends on the mix design and the type of aggregates used.

• Density of PCC is lower than RCC due to absence of reinforcement.

• Density of concrete is an important factor in determining its strength and durability.
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Q6. What is different b/w OPC and ppc
Ans. 
OPC is Ordinary Portland Cement while PPC is Portland Pozzolana Cement.
• OPC is made from raw materials like limestone and clay while PPC is made from a mixture of pozzolanic material and OPC.

• PPC has higher durability and strength compared to OPC.

• PPC is more eco-friendly as it uses industrial waste as a raw material.

• OPC is commonly used for construction of buildings and bridges while PPC is used for marine structures, hy...read more
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Q7. What is density of sand , water and aggregate.
Ans. 
The density of sand, water, and aggregate varies depending on their composition and temperature.
• The density of sand ranges from 1300 to 1700 kg/m³.

• The density of water is 1000 kg/m³ at 4°C.

• The density of aggregate varies depending on its size and composition.

• The density of fine aggregate ranges from 1600 to 1800 kg/m³.

• The density of coarse aggregate ranges from 1200 to 1500 kg/m³.
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Q8. Why provide clear cover.
Ans. 
Clear cover provides protection and visibility.
• Clear cover protects the item from dust, dirt, and damage.

• Clear cover allows the item to be visible without removing the cover.

• Clear cover is commonly used for electronic devices, books, and documents.
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Q1. Electrical panal installation and connection
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Q2. External work complete
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Q3. Construction building in raising panal installation
Ans. 
Construction building in raising panel installation involves proper planning, coordination, and adherence to safety regulations.
• Ensure all necessary materials and equipment are available before starting the installation process

• Coordinate with other trades to ensure smooth workflow and avoid conflicts

• Follow safety regulations and guidelines to prevent accidents and injuries

• Properly train and supervise workers to ensure ...read more
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