Practice A 1% Grade Meets A +2.0% Grade (19.1) - Solution

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9 questions

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6 sample questions

Question 1.
What is a grade in road design?
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Think about how steep a hill is.
Question 2.
What does chainage measure?
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Consider how we mark distances on roads.
3Question 3.
What is the purpose of calculating tangent lengths in road design?
- To determine the height of the curve
- To ensure smooth transitions between grades
- To measure the distance of the road
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Think about transitions when driving.
4Question 4.
True or False: The chainage is measured in kilometers.
- True
- False
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Consider common road measurement units.
Question 5.
If a highway section has a gradient change from -2% to +3%, explain the design considerations for setting out smooth curves and calculate the required curve lengths with a radius of 250 m.
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Remember to account for safety, vehicle speed, and visibility!
Question 6.
Design a road that connects a -1% grade to a +4% grade. Calculate the total length of the vertical curve needed and provide a tabulated summary of how chainage changes with distance on the curve.
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Break it down: consider each segment as you go!

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