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Difference between HI method and Rise and Fall method.
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written 6.3 years ago by
teamques10
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• modified 6.3 years ago |
| Sr No. | HI Method (Collimation plane) | Rise and fall method |
|---|---|---|
| 1 | HI method is less tedious, more rapid and simple method | Rise and fall method is more tedious |
| 2 | In an HI method less calculation is required | Rise and fall method more calculation is required |
| 3 | HI method is less accurate | Rise and fall method is more accurate |
| 4 | There is no check on RL of intermediate points, hence possibilities of more mistake in calculation | There is cross-check on each RL of intermediate points, hence possibilities of less mistake in calculation |
| 5 | The error in the calculation of RL of any point is not carried forward | The mistake made in the calculation of RL of any point will be carried forward |
| 6 | Used for calculation the RL of profile levelling work, for preparation of contour map | Used for precise levelling, fly levelling and check to level |
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