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The correction to be applied to each 30 metre chain length along θ° slope, is
- a)30 (cosθ - 1)m
- b)30 (sinθ - 1)m
- c)30 (secθ - 1)m,
- d)30 (tanθ - 1)m
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The correction to be applied to each 30 metre chain length along &thet...
Let 'L' be the distance measured along the slope inclined at angle 'θ' as shown in the figure:
Hypotenusal correction = Radial length on horizontal Plane - Projection of inclined length on a horizontal plane
∴ Hypotenusal correction = L - L × cos θ
∴ Correction = L × ( 1- cos θ) = 30( 1 - cos θ)
Therefore, correct answer is A.
Most Upvoted Answer
The correction to be applied to each 30 metre chain length along &thet...
The survey line is called the chaining correction. This correction takes into account any errors or variations in the length of the chain due to temperature, tension, or wear and tear. The chaining correction is usually calculated by measuring the true length of the chain against a standard reference length and then applying a correction factor to each chain length along the survey line. This ensures that the survey measurements are accurate and reliable.
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The correction to be applied to each 30 metre chain length along θ° slope, isa)30 (cosθ - 1)mb)30 (sinθ- 1)mc)30 (secθ - 1)m,d)30 (tanθ - 1)mCorrect answer is option 'A'. Can you explain this answer?
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