8. Example 2.16:

Try these first

1. 1.

   What is the formula to calculate tangent length?

   Hint

   Think about what parameters define the curve.

2. 2.

   Define chainage in your own words.

   Hint

   Consider how we use this in surveying.

3. 3.

   What formula do you use to find tangent length?

   • R * sin(Δ/2)
   • R * tan(Δ/2)
   • R * cos(Δ/2)

   Hint

   Consider which function relates to angles and sides.

4. 4.

   True or False: The curve length can be found by multiplying the radius by the deflection angle.

   • True
   • False

   Hint

   Recall the formula for curve length.

5. 5.

   Design a curve between two points with 130° and 110° angles, given radius R=350 m. Calculate the length and chainage.

   Hint

   Map out your calculations step-wise.

6. 6.

   Two lines converge at a point with angles 160° and 200°. Calculate the necessary curves with an R of 250 m.

   Hint

   Focus on angle conversions when necessary.