Rohan Builders Civil Engineer Interview Questions and Answers for Experienced

Basic questions for civil engineers included topics from Structural Engineering, Surveying, Geotechnical Engineering, and Concrete Technology.

Q1. Density of steel, concrete, bricks
Ans. 
Density of steel, concrete, bricks
• Steel: 7850 kg/m^3

• Concrete: 2400 kg/m^3

• Bricks: 1900-2100 kg/m^3
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Q2. What types of equipment are used for leveling and what are the different types of surveys?
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Various types of equipment such as levels, theodolites, and total stations are used for leveling. Different types of surveys include topographic, construction, and boundary surveys.
• Equipment used for leveling include levels, theodolites, and total stations

• Levels are used for basic leveling tasks, theodolites for measuring angles and distances, and total stations for combined angle and distance measurements

• Types of surv...read more
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Q3. Different types Of cement.
Ans. 
Different types of cement include Portland cement, rapid hardening cement, low heat cement, and sulfate resisting cement.
• Portland cement is the most common type used in construction.

• Rapid hardening cement sets quickly and gains strength faster than other types.

• Low heat cement generates less heat during hydration, making it suitable for large concrete structures.

• Sulfate resisting cement is used in environments with high
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Q1. What is the full form of SBC
Ans. 
SBC stands for Safe Bearing Capacity.
• SBC is the maximum pressure that can be applied to the soil without causing shear failure.

• It is an important factor in the design of foundations for structures.

• Example: The SBC of a particular soil type is 200 kN/m^2.
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Q2. Find different RLs from the given figure
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Different RLs can be found by measuring the vertical distance between points on the figure.
• Measure the vertical distance between points A and B to find RL AB

• Measure the vertical distance between points C and D to find RL CD

• Measure the vertical distance between points E and F to find RL EF
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Q1. What is the Diamter of TBM
Ans. 
The diameter of a Tunnel Boring Machine (TBM) varies depending on the project requirements and can range from a few meters to over 15 meters.
• The diameter of a TBM is typically determined by the size of the tunnel being constructed.

• TBMs used for subway tunnels may have a smaller diameter compared to those used for large transportation tunnels.

• Some TBMs can have diameters exceeding 15 meters for mega tunneling projects.

• T...read more
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Q1. Please provide a brief introduction about yourself.
Ans. 
Experienced civil engineer with a passion for sustainable infrastructure projects.
• Graduated with a degree in Civil Engineering from XYZ University

• Worked for 5 years at ABC Construction Company on various projects

• Specialize in structural design and project management

• Passionate about incorporating green building practices into projects
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Q2. Can you describe your internship experience?
Ans. 
I completed a 6-month internship at a construction firm where I worked on various projects under the guidance of senior engineers.
• Assisted in site inspections and surveys

• Prepared design drawings using AutoCAD

• Assisted in project planning and scheduling

• Participated in meetings with clients and contractors

• Learned about construction materials and techniques
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Q3. Prepare Geotech,Rcc,concetre propeely
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Q1. Estimation and budget related
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Q1. Basic process follows while billing and budgeting
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Q1. Salary negotiations
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Q1. Process of water treatment plant
Ans. 
Water treatment plant process involves several steps to remove impurities and make water safe for consumption.
• Coagulation: Chemicals are added to water to make impurities clump together.

• Sedimentation: The clumped impurities settle at the bottom of the tank.

• Filtration: Water passes through layers of sand, gravel, and charcoal to remove remaining impurities.

• Disinfection: Chlorine or other chemicals are added to kill bact...read more
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Q2. Bar bending schedule
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Q3. Concrete mix design
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Q1. Previous experience
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Q2. About previous project
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Q1. Different types of cement.
Ans. 
Different types of cement include Portland cement, rapid-hardening cement, and sulfate-resistant cement.
• Portland cement is the most common type used in construction.

• Rapid-hardening cement sets quickly and is ideal for cold weather construction.

• Sulfate-resistant cement is used in areas with high sulfate content in soil or water.

• White cement is used for architectural purposes to create a clean, bright finish.

• Low-heat cem...read more
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Q2. Types of Structure.
Ans. 
Structures can be categorized into buildings, bridges, dams, towers, and tunnels.
• Buildings: Residential, commercial, industrial

• Bridges: Beam, arch, suspension

• Dams: Gravity, arch, buttress

• Towers: Communication, observation

• Tunnels: Road, rail, water
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Q1. What is the RL in survey
Ans. 
RL in survey stands for Reduced Level, which is the height of a point relative to a chosen reference point.
• RL is used in surveying to determine the elevation of points on the ground.

• It is usually measured in meters or feet above or below a specific reference point, such as a benchmark.

• RL is important for designing drainage systems, roads, and buildings to ensure proper water flow and structural stability.

• Example: If a ...read more
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Q2. What is payback period?
Ans. 
Payback period is the time it takes for an investment to generate enough cash flow to cover its initial cost.
• Payback period is a financial metric used to evaluate the time it takes for an investment to recoup its initial cost.

• It is calculated by dividing the initial investment by the annual cash inflows generated by the investment.

• A shorter payback period is generally preferred as it indicates a quicker return on inves...read more
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