3.5. Chandra, A.M., (2005), Plane Surveying, New Age International Publishers.

Try these first

1. 1.

   What is the deflection angle in road surveying?

   Hint

   Think about the angle formed when two lines meet.

2. 2.

   Draw a simple circular curve and label its elements.

   Hint

   Use a compass for accurate curves.

3. 3.

   What is the primary purpose of transition curves?

   • To connect two straight lines
   • To smooth road turns
   • To increase deflection

   Hint

   Think about comfort and safety while making turns.

4. 4.

   True or False: Super-elevation is not necessary on flat curves.

   • True
   • False

   Hint

   Consider how centrifugal force affects vehicles on curves.

5. 5.

   A proposed road deflects 36 degrees and requires a transition radius determined at 100m. Calculate the length needed for the transition curve.

   Hint

   Ensure to check the conversion of degrees!

6. 6.

   Calculate the maximum super-elevation required for a circular curve with a radius of 200m where a vehicle is traveling at 70km/h.

   Hint

   Remember to convert km/h to m/s first!