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Option 1 : Its value decreases
Explanation:
Long wall and short wall method:
- In the long and short wall methods, the length of longwall generally reduces from earthwork to brickwork in superstructure whereas the length of the short wall rises.
Mathematically,
Long wall-length = Length of centre line of longwall + Width of item
Short wall-length = Length of centre line of short wall - Width of item
As the width of the foundation wall is greater than the width of brickwork. It is concluded that short wall length is increased from foundation to brickwork.
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