Practice Rankine’s Method Of Tangential Angles (2.1) - Linear methods of setting out curves

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9 questions

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Exercise
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6 sample questions

Question 1.
What is a deflection angle?
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Think about how curves are measured.
Question 2.
What instrument is commonly used in Rankine’s method?
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This instrument measures angles.
3Question 3.
What is the formula for calculating deflection angles in Rankine's method?
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Remember the components - chord and radius?
4Question 4.
The total deflection angle for multi-chord curves can be calculated as the sum of what?
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Think about how angles build upon each other.
Question 5.
You have a radius of 75m and a chord length of 60m. Calculate the deflection angle and explain why it's essential.
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Plug into the formula and think of the implications of misalignment.
Question 6.
If you mistakenly calculated the deflection angles without subtracting for a left-handed curve, what might the consequence be?
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What role do adjustments play in maintaining accuracy?

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