1.3.2 - By offsets perpendicular to the tangents
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Practice Questions
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What does the term 'offset' refer to in the context of curves?
💡 Hint: Think about how far you need to go from a straight line to reach the curve.
What is the formula for the exact offset?
💡 Hint: This formula involves the radius and the distance from the tangent.
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Interactive Quizzes
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What is the formula for calculating the exact offset?
💡 Hint: Recall the relationship between radius and offsets.
True or False: An approximate calculation for large circles is always used.
💡 Hint: Consider when exact calculations might be more necessary.
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Challenge Problems
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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.
💡 Hint: Make sure to square the radius and the distance properly!
Discuss the implications of choosing an approximate calculation over an exact one when setting out tight curves.
💡 Hint: Think about the accuracy needed in tight curves when vehicles travel at high speeds.
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