VRAJ INFRASTRUCTURE Civil Engineer Interview Questions and Answers

Q1. What is the Least Count of dumpy level Staff Reading ?
Ans. 
The least count of a dumpy level staff reading is typically 0.01 ft or 1 mm.
• The least count is the smallest measurement that can be read on the scale of the dumpy level staff.

• For most dumpy levels, the least count is 0.01 ft or 1 mm.

• This means that the dumpy level can measure differences in elevation as small as 0.01 ft or 1 mm.
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Q2. Why Concrete Cover is provided for reinforcement ?
Ans. 
Concrete cover is provided for reinforcement to protect it from corrosion, fire, and other environmental factors.
• Concrete cover protects reinforcement from corrosion by preventing exposure to moisture and aggressive chemicals.

• It provides fire resistance by acting as a barrier between the reinforcement and the fire.

• Concrete cover helps in maintaining the bond between reinforcement and concrete, ensuring structural integ...read more
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Q3. What is tha volume of 50 kg bag of cement ?
Ans. 
The volume of a 50 kg bag of cement varies depending on the density of the cement.
• The volume of cement can be calculated using the formula: Volume = Mass / Density

• The density of cement typically ranges from 1.1 to 1.6 g/cm^3

• For example, if the density of the cement is 1.4 g/cm^3, the volume of a 50 kg bag would be approximately 35.71 liters
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Q4. What is Dessity of steel ?
Ans. 
Ductility of steel refers to its ability to deform without breaking under stress.
• Ductility is a crucial property in structural engineering as it allows steel to be shaped and formed into various structures.

• Steel with high ductility can undergo significant deformation before failure.

• Ductility is often measured by the percentage of elongation or reduction in area during a tensile test.

• Examples of ductile materials includ
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Q5. What is tha size of concrete Cube ?
Ans. 
The size of a concrete cube is typically 150mm x 150mm x 150mm.
• Standard size of a concrete cube is 150mm x 150mm x 150mm

• Used for testing the compressive strength of concrete

• Other sizes like 100mm x 100mm x 100mm or 200mm x 200mm x 200mm may also be used
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Q6. What is tha Role of a Civil Engineer at Site ?
Ans. 
Civil engineers at site are responsible for overseeing construction projects, ensuring they are completed safely, on time, and within budget.
• Supervising construction activities to ensure compliance with design specifications and safety standards

• Managing resources and materials efficiently to meet project deadlines

• Collaborating with architects, contractors, and other stakeholders to resolve any issues that may arise

• Cond...read more
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Q7. What is tha minimum concrete grade for RCC work ?
Ans. 
Minimum concrete grade for RCC work is M20.
• Minimum concrete grade for RCC work is M20 as per IS 456:2000.

• Higher grades like M25, M30, M35, etc. can also be used depending on structural requirements.

• Concrete grades indicate the compressive strength of concrete after 28 days of curing.

• Higher grades are used for structures requiring higher strength like bridges, high-rise buildings, etc.
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Q8. What is rha dsssity of Unit wait of cement ?
Ans. 
The density of unit weight of cement is typically around 1440 kg/m^3.
• The density of unit weight of cement is commonly around 1440 kg/m^3.

• This value can vary slightly depending on the type and brand of cement.

• Density is a measure of mass per unit volume, in this case, kilograms per cubic meter.
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Q9. What is tha Grade of Cement ?
Ans. 
Grade of cement refers to the strength of the cement as per the compressive strength test.
• Grade of cement is determined by the compressive strength of cement mortar cubes at 28 days of curing.

• Common grades of cement include 33, 43, and 53 where the number represents the compressive strength in MPa.

• Higher grade cement is used for structures requiring higher strength like bridges and high-rise buildings.
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Q10. What is the Slump value of concrete for Normal RCC work
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The slump value of concrete for Normal RCC work is typically between 25-75 mm.
• The slump value of concrete for Normal RCC work is usually around 50 mm.

• The slump value can vary based on the specific requirements of the project and the mix design.

• A higher slump value indicates a more workable concrete mix, while a lower slump value may be used for specialized applications.

• It is important to test the slump value of concret...read more
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Q11. How many cube filled for 1 cubic meter concrete ?
Ans. 
Generally, 7-8 bags of cement are required to fill 1 cubic meter of concrete.
• On average, 7-8 bags of cement are needed to fill 1 cubic meter of concrete.

• The exact number of bags may vary based on the mix design and proportions used.

• For example, if each bag of cement is 50 kg, then 7 bags would be 350 kg and 8 bags would be 400 kg.
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Building and roads related

Q1. Salary and other details
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Q1. Building and roads project related
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Q2. Like part of building
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Q1. Steel estimation in a beam
Ans. 
Steel estimation in a beam involves calculating the quantity of steel required for reinforcement.
• Calculate the total length of steel bars required based on the dimensions of the beam and the spacing of the bars.

• Determine the diameter of the steel bars to be used for reinforcement.

• Consider the grade of steel and the design requirements to calculate the total weight of steel needed.

• Account for wastage and additional rein...read more
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Q2. What was your role in the last job
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Q1. Tell me about yourself
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Q2. Tell me about the projects you have been involved in.
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Q1. What is your expectation
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Q1. What is most important thing in your life, is that will give you success?
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Q2. What's your perfect field in this job?
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Q3. How do you handle any new problems?
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Q4. Do you have any extra qualities?
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Q5. Why should we hire you?
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Quality control and waste management

Maths reasoning and core subjects

Q1. Any technical questions ask me
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Q2. Difrance between OPC cement and PPC cement
Ans. 
OPC cement is made from limestone and clay, while PPC cement is made from fly ash and clay.
• OPC cement has higher strength and is used for construction of high-rise buildings and bridges.

• PPC cement has better workability and is used for plastering and finishing works.

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

• OPC cement is costlier than PPC cement.

• OPC cement is commonly used in areas w...read more
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Q3. What is two way slab
Ans. 
A two way slab is a type of reinforced concrete slab that is supported by beams on all four sides.
• Two way slab is used in buildings with large column spacing

• It is designed to resist both positive and negative bending moments

• It is commonly used in parking garages, commercial buildings, and residential buildings

• Two way slab is more economical than one way slab for larger spans
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Q1. What is the full form of SBC
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Q2. Find different RLs from the given figure
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Q1. What is the Diamter of TBM
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