The observation from a closed loop traverse around an obstacle

Home » Surveying » Surveying miscellaneous » Question

The observation from a closed loop traverse around an obstacle are

What is the value of the missing measurement (rounded off to the nearest 10 mm)?

1. 396.86 m
2. 396.79 m
3. 396.05 m
4. 396.94 m

Correct Option: A

Latitude of each segment = L × cos θ.
PQ = L cos 33.75°
QR = 300 × cos 86.3847 = 18.917
RS = 354.524 × cos 169.3819 = – 348.453
ST = 450 × cos 243.9003° = – 197.97
TP = 268 × cos 317.5° = 197.590
Since it is a closed loop traverse ∑ latitude = 0
∴ L cos 33.75° + 18.917 – 348.45 – 197.97 + 197.59.
∴ L = 369.89 m