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•  Haul road has an  important role in the production of open cast mine. In the mining gradient of haul road at any place not more than 1 in 16. Important duty of surveyor check and survey of proposed

Procedure:-

(1) Survey of proposed road with all details.
(2) complete the levelling work along the centre line of the proposed road.
(3) Make a plan and section.
(4)Calculate cut and fill from calculation or section drawing.

 ST B.S I.S F.S H.I R.L DIST A 2.81 102.81 100 0 B 1.31 101.5 15 C 2.15 0.32 104.64 102.49 30 D 1.73 102.91 45 E 3.31 0.54 107.41 104.1 60 F 0.68 106.73 90

Difference of R.L -A to F = 6.73 mt
In the above calculation, the gradient of the proposed road is 1 in 13.37. We observed that the 1in 13.37 gradient is more than compression to 1in 16. we should extend the length of the proposed road

Total length will be proposed road -16*6.73= 107.68 mt.

 ST DIST R.L Cal of proposed RL PROPOSED RL Cutting A 0 100 100 100 0 B 15 101.5 100+15/16 100.93 0.57 C 30 102.49 100+30/16 101.87 0.62 D 45 102.91 100+45/16 102.81 0.1 E 60 104.1 100+60/16 103.75 0.35 F 75 105.41 100+75/16 104.68 0.73 G 90 106.73 100+90/16 105.62 1.11 H 107.68 106.73 100+107.68/16 106.73 0
For setting the proposed RL on the ground by use of peg at a given distance. Draw the pegs on given distance and write of the cut length on it for direction of supervisor or operator.

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