Question
Download Solution PDFDuring the alignment of a road by using direct ranging, the surveyor raises both the hands above his head and then, brings them down as a signal for his assistant. The correct action taken by his assistant would be _________.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
Ranging:
- The process of establishing an intermediate point on a straight line between two endpoints is known as ranging.
- It is used when a survey line is longer than a chain length
- It is necessary to align intermediate points on the chain line so that the measurements are along the line.
Code of signals during ranging is as follows:
| The codes of signals which are used to direct the assistant while ranging a line | |
| Action | Meaning |
| Rapid sweeps with the right hand | Move considerably to the right |
| Rapid sweeps with the left hand | Move considerably to the left |
| Slow sweeps with the right hand | Move slowly to the right |
| Slow sweeps with the left hand | Move slowly to the left |
| Right arm extended | Continue to move to the right |
| Left-arm extended | Continue to move to the left |
| Right arm up and moved to the right | Plump the rod to the right |
| Left-arm up and moved to the left | Plump the rod to the left |
| Both arms above the head and then brought down | Correct |
| Both arms extended forward and depressed briskly | Fix |
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