LAB
# 3
Calculating curve with using tangent lines.
Instrument
- Theodolite telescope
- Telescope stand
- Tape
 |
1. Set up theodolite at PI .Taping for T so that getting 2 points ; BC and EC ; was called subtangent crossing at PI . |
 |
2. Set 0 00' 00" degree at BC Then back focus to EC for deflection angle . |
 |
3. Calculating for R, C, L, E .Bring result of L after calculated devide for interval equal Arc volue. |
 |
4. Bring Arc for calculated deflection angle .Arc result using in find C (Chord) |
 |
5. Move in the theodolite at BC and bring result data ( deflection angle, chord ) .Ploting to draw a tangent lines . |
