2.4.2. Setting out the compound curve

Try these first

1. 1.

   What is a compound curve?

   Hint

   Think about how roads curve.

2. 2.

   What tool is commonly used to measure angles in setting out curves?

   Hint

   It helps in surveying and construction.

3. 3.

   What is a compound curve?

   • A straight path
   • A curve with one radius
   • A curve with two different radii

   Hint

   Consider the definition of curves in road design.

4. 4.

   True or False: Chainage refers to a unit of measurement used in laying out curves.

   • True
   • False

   Hint

   Recall how distances are measured along roads.

5. 5.

   Given a compound curve with two arcs of radii 30m and 50m, calculate the deflection angles and chainages needed at various tangent points, including potential adjustment for curvature.

   Hint

   Refer to the section on calculation methods for guidance.

6. 6.

   Design a practical layout of a compound curve for a road leading into a city park. Ensure to include necessary safety measures based on curve design principles.

   Hint

   Think about how the curve connects with surrounding roads and paths.