Rohan Builders Civil Engineer Interview Questions, Process, and Tips

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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Q1. Concrete Proportion, density
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Pre and post pendamic

Q1. Ready to locate ?
Ans. 
Yes, I am ready to locate and work on various civil engineering projects.
• I am experienced in using GPS technology for site surveys and mapping.

• I am familiar with reading and interpreting blueprints and construction plans.

• I have knowledge of local building codes and regulations.

• I am prepared to travel to different project sites as needed.
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