Computer · Surveying
A levelling work was carried out along a falling gradient using a dumpy level and a levelling staff of 4 m length. The following successive five readings were taken: 1.455 m, 2.36 m, 0.59 m, 1.78 m, and 1.12 m. The level was shifted to a new set up after the second reading. What is the correct order of booking the readings in the field book? (BS - Back sight, FS - Fore sight, IS - Intermediate sight)
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BS, FS, BS, IS, FS
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