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2 cards from this section. Quick, good the night before a test.
What is the formula for calculating tangent length?
Think about what parameters are involved in the tangent calculation.
Define the term 'deflection angle'.
Consider how it relates to line intersections.
What does the deflection angle represent?
Think about the measurement that represents curvature.
True or False: The length of the curve can be calculated directly from the radius.
Consider how both parameters are used in the formula.
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.
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.
Use the offset calculations learned in the section for each step.
4 more questions in this section. Enroll free to practise them all.
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