2.57. A circular curve of radius 900 m is to be constructed between two straights of a proposed highway...

Try these first

1. 1.

   What is the definition of tangent length in the context of highway design?

   Hint

   Think about where the curve connects to the straights.

2. 2.

   Describe deflection angle.

   Hint

   It guides how the tangents meet before curving.

3. 3.

   What does the tangent length refer to in highway planning?

   • Distance to the curve entrance
   • Distance to the curve exit
   • Distance to midpoint

   Hint

   Think of it as a lead into the curve.

4. 4.

   True or False: The deflection angle is only important for defining circular curves.

   • True
   • False

   Hint

   Consider its relevance beyond just circular curves.

5. 5.

   A highway curve has a radius of 750 m and a deflection angle of 15°. Calculate the tangent lengths, circular length, and provide chainages if the intersection point is at 2000 m.

   Hint

   Make sure to check your angle conversion!

6. 6.

   If a road with a 900 m radius curve is being redesigned with a deflection angle of 18°, calculate all necessary data required for setting it out properly.

   Hint

   Follow step-by-step for clarity!