1.15.6. Types of direct levelling

Try these first

1. 1.

   What is the formula used in simple levelling?

   Hint

   Consider how we define a benchmark.

2. 2.

   What type of levelling is used for far-off points?

   Hint

   Think about measurements taken at various stations.

3. 3.

   What is the primary use of simple levelling?

   • To project profiles
   • To measure quick elevation differences
   • To create cross-sections

   Hint

   Think about the closeness of the points involved.

4. 4.

   True or False: Differential levelling can only be performed using one instrument setup.

   • True
   • False

   Hint

   Consider if long distances can be accurately measured from one spot.

5. 5.

   A fly levelling process started with a benchmark at 99.500 m. Given BS readings of 1.050 m and FS readings of 2.850 m for the first point, calculate the RL.

   Hint

   Use the fly levelling technique to connect the readings.

6. 6.

   In reciprocal levelling across a river, readings at point A provide a height of 10.500 m, while point B provides 10.350 m. How do you find the true difference in heights?

   Hint

   Consider both sets of readings when calculating.