Exercise 23 |
Ex.23-1 What is tacheometry? Enumerate its uses. Ex.23-2 Describe the conditions under which tacheometric surveying is advantageous. Ex.23-3 What is an anallactic lens? State its significance in tachometric surveying. Ex.23-4 A tacheometer is placed at a station A and readings on a staff held vertical upon a B.M. of RL =100.0 meter and at station B are 0.640, 2.200, 3.760 and 0.010, 2.120, 4.230 m respectively. The angle of depression of the telescope in the first case is 6° 19' and in the second case is 7° 42'. Find the horizontal distance from A to B and the RL of station B, if the instrument has constants 100 and 0.5. Ex.23-5 To determine the distance between two points P and Q and elevation of Q, following observation were made:
Calculate the unknown parameters after establishing the fundamental relations. |