Hey everyone! Welcome to our blog post on civil engineering MCQs, focusing on RCC Structure Design. It’s all about building strong stuff that doesn’t fall!
RCC, or Reinforced Cement Concrete, is a type of concrete mixed with steel bars or mesh to make it super strong. It’s used for building bridges, buildings, and dams. Think of it as a superhero version of concrete that can take on more weight and last a long time.
Civil Engineering students can access a comprehensive collection of MCQ (Multiple-Choice Questions) and answers related to RCC (Reinforced Concrete) Structures Design. These resources are designed to assist students in preparing for GATE exams, various technical interviews, competitive examinations, and other entrance exams. The RCC Structures Design MCQ section is a crucial chapter for both civil engineering and GATE students.
1. What is the primary purpose of reinforcement in RCC?
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Explanation:
Reinforcement in RCC is primarily used to resist tensile forces because concrete is weak in tension but strong in compression.
2. The minimum cover in RCC beams should not be less than:
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Explanation:
The minimum cover in RCC beams is usually 20 mm to protect the steel from corrosion and to provide fire resistance.
3. The term 'M20' in concrete mix design refers to:
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Explanation:
'M20' refers to the characteristic compressive strength of 20 MegaPascals (MPa) in 28 days.
4. Slenderness ratio in a column is defined as:
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Explanation:
Slenderness ratio is the ratio of the effective length of the column to its least lateral dimension, affecting its load-bearing capacity and buckling behavior.
5. The process of arranging the reinforcement and casting concrete around it is known as:
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Explanation:
Concreting is the process of placing and finishing concrete around the reinforcement bars.
6. In RCC, segregation refers to:
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Explanation:
Segregation is the separation of the components of concrete, leading to an inconsistent mix.
7. The modulus of elasticity of concrete is primarily dependent on its:
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Explanation:
The modulus of elasticity of concrete is closely related to its compressive strength.
8. What does the term 'curing' in concrete technology refer to?
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Explanation:
Curing is the process of maintaining adequate moisture, temperature, and time to allow the concrete to achieve its desired properties.
9. The design of a beam in RCC primarily involves:
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Explanation:
Designing an RCC beam involves calculating bending moments and shear forces to determine the size and amount of reinforcement required.
10. The term 'workability' of concrete refers to:
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Explanation:
Workability refers to how easily the concrete can be mixed, placed, compacted, and finished.
11. Dowel bars in concrete pavement primarily serve to:
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Explanation:
Dowel bars are used to transfer loads across joints in concrete pavement, ensuring smooth transfer of vehicles.
12. What is the common method to test the compressive strength of concrete?
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The cube test is a common method to determine the compressive strength of concrete, where cubes are crushed at a specific age.
13. In RCC, creep refers to:
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Explanation:
Creep in concrete is the phenomenon of gradual deformation under a sustained load over time.
14. The main purpose of providing stirrups in a beam is to:
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Explanation:
Stirrups are provided in RCC beams to resist shear forces and prevent shear failure.
15. In the context of RCC, what does the term 'spalling' refer to?
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Explanation:
Spalling refers to the breaking off of concrete surface layers, often due to internal stresses or corrosion of reinforcement.
16. The process of mixing cement, sand, aggregate, and water to form concrete is known as:
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Explanation:
Batching is the process of measuring and combining the ingredients of concrete in specified proportions.
17. In an under-reinforced RCC beam, failure occurs due to:
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Explanation:
In an under-reinforced beam, the steel reinforcement yields before the concrete reaches its ultimate strength, leading to a ductile failure mode.
18. Which of the following is not a characteristic of a good quality concrete?
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Explanation:
Good quality concrete should have high strength, along with workability, durability, and impermeability.
19. The bending moment in a simply supported beam carrying a uniform distributed load is highest at:
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Explanation:
In a simply supported beam with a uniform load, the maximum bending moment occurs at the center.
20. Pre-stressed concrete differs from reinforced concrete in that it:
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Explanation:
Pre-stressed concrete involves pre-loading the concrete to induce a compressive stress, which counteracts the tensile stresses due to applied loads.
21. The lap length in RCC beams is provided to:
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Explanation:
Lap length is provided to ensure a proper bond between overlapping reinforcement bars, maintaining the structural integrity.
22. In an RCC column, the longitudinal reinforcement is provided to resist:
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Explanation:
Longitudinal reinforcement in a column primarily resists compressive forces.
23. The 'Grade of concrete' refers to:
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Explanation:
The grade of concrete indicates its characteristic compressive strength.
24. The phenomenon of loss of moisture from concrete is known as:
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Explanation:
Shrinkage is the process of concrete losing moisture, which can lead to cracks if not properly managed.
25. In RCC, the term 'honeycombing' refers to:
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Explanation:
Honeycombing refers to the presence of voids and gaps in concrete, often due to improper compaction or mixing.
These questions provide a foundational understanding of RCC structure design, suitable for beginners in Civil Engineering.