Which of the following with respect to Centre Line method is NOT true?

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SSC JE Civil 15 Nov 2022 Shift 3 Official Paper
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  1. If two walls come from opposite directions and meet a wall at the same junction, then there will be one junction (as per centre line method).
  2. Total quantity for an item is obtained by multiplying the total centre line length by the respective breadth and height.
  3. At the corners of the building where two walls meet, no subtraction or addition is required for the centre line length.
  4. For a building having different types of walls, each set of wall has to be dealt with separately.

Answer (Detailed Solution Below)

Option 1 : If two walls come from opposite directions and meet a wall at the same junction, then there will be one junction (as per centre line method).
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Detailed Solution

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Concept:

Centre Line Method:

  • In this method of estimation, the total center line length of walls in a building is first calculated, then the center line length is multiplied by the breadth and depth of the respective items to get the total quantity of that item.
  • This method is quick but requires special attention and consideration at the junctions meeting points of partition or cross walls, etc.
  • For rectangular, circular, and polygon (hexagonal, octagonal, etc.) buildings having no inter or cross walls, this method is quite simple.
  • Half the width is deducted at the junction points as it is considered twice while estimating through the centre line method.

F1 Madhuri Engineering 23.01.2023 D26

  • No deductions are required at corners during estimating through centre line method.
  • For buildings having different types of walls, each set of walls shall have to dealt with separately.
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