8.1 - Two straights BA and AC
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Practice Questions
Test your understanding with targeted questions
What is the formula for calculating tangent length?
💡 Hint: Think about what parameters are involved in the tangent calculation.
Define the term 'deflection angle'.
💡 Hint: Consider how it relates to line intersections.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does the deflection angle represent?
💡 Hint: Think about the measurement that represents curvature.
True or False: The length of the curve can be calculated directly from the radius.
💡 Hint: Consider how both parameters are used in the formula.
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Challenge Problems
Push your limits with advanced challenges
A road layout needing to connect two straights, has a PI of 2000 m with a deflection angle of 72°. Calculate the tangent and curve lengths required to set this out using a radius of 80 m.
💡 Hint: Use the formulas correctly to derive each component.
Considering a deflection angle of 90° and a radius of 100 m, calculate the offsets and the positions of pegs every 10 m along a 33 m curve.
💡 Hint: Use the offset calculations learned in the section for each step.
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