FW09 — Topographic Survey and Contour Map Preparation - Report

FW09 — Topographic Survey and Contour Map Preparation

I — Project Details

Item	Record
Fieldwork / Project	FW09 — Topographic Survey and Contour Map Preparation
Location	University Campus — Assigned Open Site
Date / Time	October 22, 2026; 1:00–4:00 PM
Group / Section	Group 1 / CE Surveying
Survey Type	Total-station topographic detail survey
Coordinate Reference	Assumed local coordinate system
Vertical Reference	CP-01 = 100.000 m
Contour Interval	0.25 m
Weather / Visibility	Clear; complete site coverage

II — Survey Team and Equipment Used

A — Survey Team

Member	Assignment / Description	Remarks
Student A	Party Chief	None
Student B	Total Station Operator	None
Student C	Prism Person	None
Student D	Recorder / Feature Coder	None
Student E	Control / Check Observer	None
Student F	Safety Observer	None

B — Equipment Used

Equipment / Instrument	ID / Description	Quantity	Remarks
Total Station	TS-02; 5″ least count	1	Raw file exported
Tripod	TP-03	1	Serviceable
Prism and Pole	PR-01 / PP-02	1 set	Pole bubble checked
Data Collector	DC-01	1	Codes and raw observations retained
Control Markers	CP-01 and CP-02	2	Stable
PPE Set	High-visibility vest and closed shoes	6	Complete

III — Project Sketch and Photo Documentation

A — Project Sketch and Finished Map

FW09 — Topographic Survey and Contour Map

B — Google Maps Location Points

Point / Area	Map Record	Purpose / Limitation
Survey-site boundary	Verified Google Maps polygon required in actual report	Geographic context and coverage
CP-01 and CP-02	Verified WGS84 points may be added when independently captured	Local control coordinates remain the computation basis
Detail points	Field codes and assumed local coordinates	Not Google Maps control points

C — Photo Documentation — Dedicated Page

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

Photo	Image File	Description
1	FW09-photo-01.jpg	Total station occupation at CP-01 and backsight to CP-02
2	FW09-photo-02.jpg	Prism positioned at a ground-detail point
3	FW09-photo-03.jpg	Feature coding at pavement edge and building vicinity
4	FW09-photo-04.jpg	Completed site coverage and control-check observation

IV — Observations and Data

A — Control Data

Control Point	Northing (m)	Easting (m)	Elevation (m)	Use
CP-01	1000.000	1000.000	100.000	Occupied/control
CP-02	1000.000	1060.000	100.720	Backsight/check

B — Raw Electronic Observation Register

Raw File	Contents	Record Count	Status
FW09-G1-raw.csv	Station setups, HA, VA/ZA, slope distance, HI, HR, point ID, and feature code	12 detail points plus CP-02 check	Original export retained with submission
FW09-G1-field-notes.pdf	Setup notes, sketches, code list, and repeated readings	1 field book record	Unaltered scan retained

The model page summarizes the raw-file register; an actual submission must append the complete electronic export rather than replace it with processed coordinates.

C — Processed Detail Points

Point	Code	Easting (m)	Northing (m)	Elevation (m)	Description
D01	GRD	1000.000	1020.000	100.360	Ground
D02	GRD	1020.000	1020.000	100.600	Ground
D03	EP	1040.000	1020.000	100.840	Pavement edge
D04	EP	1060.000	1020.000	101.080	Pavement edge
D05	GRD	1000.000	1040.000	100.720	Ground
D06	GRD	1020.000	1040.000	100.960	Ground
D07	BLDG	1040.000	1040.000	101.200	Building corner vicinity
D08	GRD	1060.000	1040.000	101.440	Ground
D09	GRD	1000.000	1060.000	101.080	Ground
D10	GRD	1020.000	1060.000	101.320	Ground
D11	GRD	1040.000	1060.000	101.560	Ground
D12	GRD	1060.000	1060.000	101.800	Ground

D — Independent Control Check and QA/QC

Quantity	Assigned CP-02	Check Observation	Difference
Northing (m)	1000.000	1000.002	+0.002
Easting (m)	1060.000	1059.998	-0.002
Elevation (m)	100.720	100.721	+0.001

Check	Result
Horizontal control-check discrepancy	0.0028 m
Point IDs unique and feature codes traceable	Yes
Contours consistent with spot elevations	Yes
North reference, scale, CI, and legend included	Yes

V — Computations and Assumptions

Horizontal control-check discrepancy:

d_c=\sqrt{(0.002)^2+(-0.002)^2}=0.002828\text{ m}\approx0.0028\text{ m}

Between D06 (100.960 m) and D07 (101.200 m), 20.000 m apart, the 101.00 m contour occurs at:

d=20.000\left(\frac{101.000-100.960}{101.200-100.960}\right)=3.333\text{ m}

Assumptions and conventions:

CP-01 and CP-02 define an assumed local coordinate and vertical system.
Linear contour interpolation is used between adjacent measured detail points.
The contour interval is 0.25 m.
Coded breaklines and physical features are preserved separately from terrain points.
Google Maps locations provide context only and do not transform the local control system.
The finished map is based on the full raw export registered in Section IV.

VI — Remarks and Conclusions

A — Remarks

The site rises generally from southwest to northeast.
Terrain contours and physical features are kept distinct for readability.
Prism plumbing, point selection, feature coding, instrument setup, and incomplete breakline coverage are probable error sources.
The CP-02 check was retained as an independent observation.

B — Conclusion

The control check closes horizontally by 0.0028 m and vertically by 0.001 m. The final map presents the control points, coded features, spot elevations, and 0.25 m contours, with raw electronic observations retained as a traceable submission attachment.

Example filename: `G#1-P#9-Topographic Survey.pdf`