I — Project Details

II — Survey Team and Equipment Used

A — Survey Team

B — Equipment Used

III — Project Sketch and Photo Documentation

A — Project Sketch

Enlarge

B — Google Maps Location Points

C — Photo Documentation — Dedicated Page

Reserve one complete report page for the embedded original images represented by this register.

IV — Observations and Data

A — Raw Stadia Observations

B — Reduced Results

C — Independent Reference Check

V — Computations and Assumptions

For a vertical rod and inclined sight:

$$s=U-L$$ $$H=Ks\cos^2\theta+C\cos\theta$$ $$V=\frac{Ks}{2}\sin 2\theta+C\sin\theta$$

Representative P-01 reduction:

$$s=1.842-1.222=0.620\text{ m}$$ $$H=100(0.620)\cos^2(5^\circ20')=61.464\text{ m}$$ $$E_{P01}=100.000+1.500+5.738-1.532=105.706\text{ m}$$

Independent difference:

$$\%\text{ difference}=\frac{|61.464-61.480|}{61.480}(100)=0.026\%$$

Assumptions and conventions:

• The stadia rod is vertical at each target.
• $K=100$ and $C=0.000\text{ m}$ are adopted instrument constants.
• Positive vertical angle is uphill; negative is downhill.
• The middle-hair reading is retained in every elevation computation.
• No curvature/refraction correction is applied at these classroom distances.

VI — Remarks and Conclusions

A — Remarks

• The three sights demonstrate uphill, downhill, and horizontal reductions.
• Rod plumbing, stadia-hair interpolation, vertical-angle reading, and instrument-height measurement are probable error sources.
• The taped check is independent and does not overwrite the tacheometric result.

B — Conclusion

The reduced horizontal distances are 61.464 m, 47.747 m, and 55.000 m for P-01 through P-03. The P-01 result differs from the taped reference by 0.016 m (0.026%), supporting the internal consistency of the model observations.

Example filename: `G#1-P#6-Tacheometry.pdf`