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With reference to tunnelling, which of the following factors are to be considered for deciding the size of the shaft?
1. System used for hoisting
2. Size of the muck car
3. Quantity of muck to be lifted
4. Eventual use of the shaft
Select the correct answer using the codes given below:
  • a)
    1 , 2 and 3
  • b)
    1 and 4
  • c)
    2, 3 and 4
  • d)
    1, 2, 3 and 4
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
With reference to tunnelling, which of the following factors are to be...
Size of shaft depends upon the following factors:
(i) Quantity of muck to be handled
(ii) Nature of hoisting system
(iii) Nature of equipment used in tunnelling
(iv) Number of labourers needed for tunnelling
(v) Space required to carry pipes and wires
(vi) Eventual use of the shaft.
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Most Upvoted Answer
With reference to tunnelling, which of the following factors are to be...
Factors to Consider for Deciding the Size of the Shaft in Tunnelling

Tunnelling operations involve the construction of underground tunnels or passages for various purposes such as transportation, mining, or utility installations. One of the key considerations in tunnelling is the size of the shaft, which is the vertical access point to the tunnel. The size of the shaft is determined by several factors, including the system used for hoisting, the size of the muck car, the quantity of muck to be lifted, and the eventual use of the shaft. Let's discuss each factor in detail:

1. System used for hoisting:
The choice of hoisting system plays a crucial role in determining the size of the shaft. Different hoisting systems have different space requirements and load capacities. For example, if a large-scale hoisting system such as a double-drum friction hoist is used, it may require a larger shaft to accommodate the equipment and ensure safe and efficient operation.

2. Size of the muck car:
The muck car is used to transport the excavated material or muck from the tunnel face to the surface. The size and capacity of the muck car influence the size of the shaft. A larger muck car may require a larger shaft to allow for smooth loading and unloading operations. Additionally, the size of the muck car also affects the overall productivity of the tunnelling operation.

3. Quantity of muck to be lifted:
The volume and weight of the muck to be lifted from the tunnel to the surface impact the size of the shaft. If a large quantity of muck is generated during tunnelling, a larger shaft with increased capacity may be required to handle the muck efficiently. The size of the shaft should be able to accommodate the expected muck flow rate and prevent any congestion or delays in the hoisting process.

4. Eventual use of the shaft:
The eventual use of the shaft also influences its size. If the shaft is intended for future use, such as for ventilation, emergency access, or for the installation of additional utilities, a larger size may be required. It is important to consider the long-term requirements of the shaft to avoid the need for costly modifications or expansions in the future.

In conclusion, when deciding the size of the shaft in tunnelling, factors such as the hoisting system, size of the muck car, quantity of muck to be lifted, and eventual use of the shaft need to be considered. These factors ensure the safe and efficient operation of the tunnelling project and cater to the specific requirements of the project.
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With reference to tunnelling, which of the following factors are to be considered for deciding the size of the shaft?1. System used for hoisting2. Size of the muck car3. Quantity of muck to be lifted4. Eventual use of the shaftSelect the correct answer using the codes given below:a)1 , 2 and 3b)1 and 4c)2, 3 and 4d)1, 2, 3 and 4Correct answer is option 'D'. Can you explain this answer?
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With reference to tunnelling, which of the following factors are to be considered for deciding the size of the shaft?1. System used for hoisting2. Size of the muck car3. Quantity of muck to be lifted4. Eventual use of the shaftSelect the correct answer using the codes given below:a)1 , 2 and 3b)1 and 4c)2, 3 and 4d)1, 2, 3 and 4Correct answer is option 'D'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about With reference to tunnelling, which of the following factors are to be considered for deciding the size of the shaft?1. System used for hoisting2. Size of the muck car3. Quantity of muck to be lifted4. Eventual use of the shaftSelect the correct answer using the codes given below:a)1 , 2 and 3b)1 and 4c)2, 3 and 4d)1, 2, 3 and 4Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for With reference to tunnelling, which of the following factors are to be considered for deciding the size of the shaft?1. System used for hoisting2. Size of the muck car3. Quantity of muck to be lifted4. Eventual use of the shaftSelect the correct answer using the codes given below:a)1 , 2 and 3b)1 and 4c)2, 3 and 4d)1, 2, 3 and 4Correct answer is option 'D'. Can you explain this answer?.
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