Practice By Offsets Perpendicular To The Tangents (1.3.2) - Linear methods of setting out curves

Practice: By offsets perpendicular to the tangents

Lesson 1.3.2Linear methods of setting out curves

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8 questions

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2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What does the term 'offset' refer to in the context of curves?
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Think about how far you need to go from a straight line to reach the curve.
Question 2.
What is the formula for the exact offset?
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This formula involves the radius and the distance from the tangent.
3Question 3.
What is the formula for calculating the exact offset?
- O = R + sqrt(R^2 + x^2)
- O = R - sqrt(R^2 - x^2)
- O = sqrt(R^2 + x^2)
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Recall the relationship between radius and offsets.
4Question 4.
True or False: An approximate calculation for large circles is always used.
- True
- False
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Consider when exact calculations might be more necessary.
Question 5.
In a construction project, the radius of curvature is 120 meters, and the measurement is taken 30 meters from the tangent. Calculate the exact offset.
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Make sure to square the radius and the distance properly!
Question 6.
Discuss the implications of choosing an approximate calculation over an exact one when setting out tight curves.
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Think about the accuracy needed in tight curves when vehicles travel at high speeds.

4 more questions in this section. Enroll free to practise them all.