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1️⃣ What is the role of a civil engineer on a construction site?
Answer:
A civil engineer plans, supervises, and executes construction activities as per drawings, specifications, and safety norms. Responsibilities include coordination with contractors, quality control, quantity measurement, material management, safety compliance, and timely completion of work.
2️⃣ What checks are required before starting concreting work?
Answer:
Check approved drawings, shuttering alignment, reinforcement spacing, cover blocks, embedments, formwork stability, and cleanliness. Ensure approved concrete mix, slump value, testing arrangements, and availability of vibration equipment before pouring.
3️⃣ What is M20, M25 concrete?
Answer:
M20, M25 indicate characteristic compressive strength of concrete in N/mm² at 28 days. M20 is commonly used for residential works, while M25 and above are used for structural elements requiring higher strength.
4️⃣ What is slump test and why is it important?
Answer:
Slump test measures workability of fresh concrete. It ensures concrete is neither too dry nor too wet, helping achieve proper compaction, strength, and durability at site.
5️⃣ What is curing and why is it necessary?
Answer:
Curing maintains moisture and temperature for concrete hydration. Proper curing improves strength, durability, and reduces cracks. Inadequate curing leads to weak and brittle concrete.
6️⃣ Difference between PCC and RCC?
Answer:
PCC (Plain Cement Concrete) does not contain steel reinforcement and is used for leveling or flooring. RCC (Reinforced Cement Concrete) contains steel bars to resist tensile forces and is used for structural elements.
7️⃣ What is shuttering and its purpose?
Answer:
Shuttering (formwork) is temporary support used to hold fresh concrete until it gains sufficient strength. Proper shuttering ensures correct shape, alignment, and surface finish.
8️⃣ What is reinforcement cover and why is it important?
Answer:
Cover is the distance between reinforcement and concrete surface. It protects steel from corrosion, fire, and weather effects, and ensures durability of structure.
9️⃣ What is bar bending schedule (BBS)?
Answer:
BBS is a detailed list of reinforcement bars including diameter, length, shape, and quantity. It helps in accurate material estimation, cutting, bending, and cost control.
🔟 What is foundation and its types?
Answer:
Foundation transfers structural load safely to soil. Types include shallow foundations (isolated, combined, raft) and deep foundations (pile, well foundation) depending on soil conditions and load.
1️⃣1️⃣ What is bearing capacity of soil?
Answer:
Bearing capacity is the maximum load soil can support without failure or excessive settlement. It is determined through soil investigation and tests.
1️⃣2️⃣ What is soil compaction?
Answer:
Soil compaction increases soil density by reducing air voids. It improves strength, stability, and reduces settlement. Proper compaction is essential for roads and foundations.
1️⃣3️⃣ Difference between load bearing and framed structure?
Answer:
Load bearing structures transfer load through walls, suitable for low-rise buildings. Framed structures use beams and columns, suitable for multi-storey buildings and large spans.
1️⃣4️⃣ What is expansion joint?
Answer:
Expansion joints allow movement due to temperature changes and prevent cracks in structures like bridges, buildings, and pavements.
1️⃣5️⃣ What is waterproofing and where is it used?
Answer:
Waterproofing prevents water penetration into structures. It is used in basements, roofs, toilets, tanks, and foundations to improve durability.
1️⃣6️⃣ What is QA/QC in civil construction?
Answer:
QA ensures proper processes and standards, while QC involves inspection and testing of materials and work. Together, they ensure construction quality and compliance.
1️⃣7️⃣ What is cube test?
Answer:
Cube test checks compressive strength of concrete. Concrete cubes are tested at 7 and 28 days to verify mix strength.
1️⃣8️⃣ What is segregation in concrete?
Answer:
Segregation occurs when aggregates separate from cement paste, leading to weak concrete. Proper mix design and handling prevent segregation.
1️⃣9️⃣ What is honeycombing?
Answer:
Honeycombing is formation of voids due to poor compaction or improper shuttering. It reduces strength and durability and must be repaired.
2️⃣0️⃣ What is structural drawing?
Answer:
Structural drawings show reinforcement details, sizes, and layout of beams, slabs, columns, and foundations. They guide construction execution.
2️⃣1️⃣ What safety measures are required at construction site?
Answer:
Use PPE, barricading, safe scaffolding, proper lifting methods, signage, and permit systems. Safety prevents accidents and legal issues.
2️⃣2️⃣ What is scaffolding and its types?
Answer:
Scaffolding provides temporary access at height. Types include single, double, cantilever, suspended, and mobile scaffolding.
2️⃣3️⃣ What is estimation and BOQ?
Answer:
Estimation calculates project cost, while BOQ (Bill of Quantities) lists item-wise quantities and rates for billing and planning.
2️⃣4️⃣ What is RA bill?
Answer:
RA (Running Account) bill is raised periodically based on work completed. It ensures contractor payments during project execution.
2️⃣5️⃣ What is curing period for concrete?
Answer:
Minimum curing period is 7 days for OPC cement and 10–14 days for blended cement to achieve required strength.
2️⃣6️⃣ What is setback in building construction?
Answer:
Setback is the minimum distance between building and plot boundary, as per local bylaws, for safety, ventilation, and access.
2️⃣7️⃣ What is plinth level?
Answer:
Plinth level is the level above ground separating foundation and superstructure. It protects building from flooding and dampness.
2️⃣8️⃣ What is formwork striking time?
Answer:
Striking time is the duration after which formwork can be removed. It depends on concrete strength, cement type, and temperature.
2️⃣9️⃣ What is site supervision?
Answer:
Site supervision ensures work is executed as per drawings, quality standards, and safety norms. It reduces errors and rework.
3️⃣0️⃣ Why should we hire you as a civil engineer?
Answer:
I bring practical site knowledge, quality focus, safety awareness, and teamwork skills. I can execute work efficiently while maintaining standards and deadlines.