Stepping of Chaining on sloping ground.
Horizontal distance between A and B is required to be measured.
Procedure:
i) A portion of tape say 2 to 4m is stretched horizontally with one end resting on ground and other end held horizontally at convenient height.
ii) The point vertically below the other end transferred on the ground with the help of plumb bob (Say C).
iii) The next step start from the C and the method is continued till point B reached.
Then,
Procedure : To measure the horizontal distance between points A & B on sloping ground following steps should be followed ( Refer above figure.)
1. Starting from point A, the chain is unfolded and straightens by applying jerks up to maximum possible distance (say P1) without any sag in it.
2. Now suspend the plumb bob from point P1 vertically to touch the ground at point P2.
3. Measure the horizontal distance on straightened chain using tally, ring and links as d(AP1).
4. Now repeat and follow the same steps at point P2 and P4 to measure the horizontal distances d(P2P3) and d(P4P5) to reach at point B.
5. Finally calculate total chained distance as d(AB) = d(AP1) + d(P2P3) + d(P4P5)