Pick up the correct statement regarding the centre line method of estimating a building:

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OSSC JE (Civil) 2015 (Special Drive) Official Paper
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  1. Product of the centre line of the walls and area of cross-section of any item, gives total quantity of the item
  2. The centre line is worked out separately for different sections of the walls of a building
  3. The centre line length is reduced by half the layer of the main wall joining the partition wall
  4. All of these
  5. None of these

Answer (Detailed Solution Below)

Option 4 : All of these
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Concept:

Centre-line Method:

In the centre line method, the total centre line length of the walls in a building is calculated and then multiplied by the breadth and depth of the respective item to get the total quantity. Or in other words, the total centre length of the walls in a building is multiplied by the cross-section area gives the total quantity.

  • The centre line is worked out separately for different sections of walls of a building
  • The centre line length is reduced by half the layer of the main wall joining the partition wall
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