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When the curve is to be set out over a rough ground, the method used is
- a)Two Theodolite method
- b)Rankine method
- c)Tachometric method
- d)Either 1 or 3
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
When the curve is to be set out over a rough ground, the method used i...
Two theodolite method: In this method, curves are staked out by angular measurements only. Accuracy attained in this method is quite high. Thus, the method is used when higher accuracy is required and when the topography is rough or field condition is difficult. Whenever curve is to be set out over rough ground this method is adopted.
Tacheometric Method: This method is sometimes used when the ground is rough and chaining cannot be done accurately. The usual table of tangential angles can be used to obtain the direction of the respective points on the curve.
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When the curve is to be set out over a rough ground, the method used i...
Setting out a Curve over Rough Ground
Setting out a curve over rough ground requires careful planning and accurate measurements. The method used for this task depends on the complexity of the curve and the available equipment. The two most common methods used are:
1. Two Theodolite Method: In this method, two theodolites are used to measure the angles between the tangent and the chord at each end of the curve. The theodolites are set up at each end of the curve, and the angles are measured from the tangent to the chord. The intersection of the two lines gives the center point of the curve.
2. Tachometric Method: This method uses a tacheometer or a total station to measure the angles and distances along the curve. The instrument is set up at each end of the curve, and the angles and distances are measured along the curve. The data is then used to calculate the coordinates of the center point of the curve.
Rankine method is not used for setting out a curve over rough ground.
Conclusion
The most suitable methods for setting out a curve over rough ground are the Two Theodolite Method and Tachometric Method. Both methods require careful planning and accurate measurements to ensure the curve is correctly positioned.
Setting out a curve over rough ground requires careful planning and accurate measurements. The method used for this task depends on the complexity of the curve and the available equipment. The two most common methods used are:
1. Two Theodolite Method: In this method, two theodolites are used to measure the angles between the tangent and the chord at each end of the curve. The theodolites are set up at each end of the curve, and the angles are measured from the tangent to the chord. The intersection of the two lines gives the center point of the curve.
2. Tachometric Method: This method uses a tacheometer or a total station to measure the angles and distances along the curve. The instrument is set up at each end of the curve, and the angles and distances are measured along the curve. The data is then used to calculate the coordinates of the center point of the curve.
Rankine method is not used for setting out a curve over rough ground.
Conclusion
The most suitable methods for setting out a curve over rough ground are the Two Theodolite Method and Tachometric Method. Both methods require careful planning and accurate measurements to ensure the curve is correctly positioned.
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When the curve is to be set out over a rough ground, the method used isa)Two Theodolite methodb)Rankine methodc)Tachometric methodd)Either 1 or 3Correct answer is option 'D'. Can you explain this answer?
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