1.8. Example 1.26: Horizontal Distance and Elevation Calculation

Try these first

1. 1.

   What is a tacheometer used for?

   Hint

   Think about the functions of a surveying instrument.

2. 2.

   What does RL stand for in surveying?

   Hint

   Consider what it refers to in relation to height.

3. 3.

   What principle does a tacheometer operate under?

   • Measuring angles only
   • Calculating distances and elevations
   • Only for horizontal measurement

   Hint

   Think about the combination of features in the instrument.

4. 4.

   True or False: Tacheometry is only useful for short distances.

   • True
   • False

   Hint

   Consider the capability of the tool.

5. 5.

   A tacheometer at point P measures readings of 1.5 m and 2.4 m from points Q and R at different angles of elevation. If the RL is known to be 200 m and the height of the instrument is 1.2 m, calculate the horizontal distance and elevation of Q.

   Hint

   Ensure to calculate each angle effectively before applying to the formula.

6. 6.

   Given a tacheometric survey with a measurement of 100 m horizontal distance to a height of 6 m above a reference level of 50 m, determine the angle of elevation.

   Hint

   Think about how the opposite side relates to the base distance.