FW10 — Cross-Section Survey and Earthwork Quantity Determination - Report

FW10 — Cross-Section Survey and Earthwork Quantity Determination

I — Project Details

Item	Record
Fieldwork / Project	FW10 — Cross-Section Survey and Earthwork Quantity Determination
Location	University Campus — Assigned Alignment
Date / Time	October 29, 2026; 1:00–4:00 PM
Group / Section	Group 1 / CE Surveying
Alignment	Sta. 0+000 to Sta. 0+060
Station Interval	20.000 m
Offsets	-6, -3, 0, +3, +6 m
Vertical Reference	BM-01 = 100.000 m
Volume Method	Average End Area
Weather / Ground	Clear; dry cross-section lines

II — Survey Team and Equipment Used

A — Survey Team

Member	Assignment / Description	Remarks
Student A	Party Chief	None
Student B	Level / Total Station Operator	None
Student C	Rod / Prism Person	None
Student D	Recorder	None
Student E	Stationing and Offset Assistant	None
Student F	Safety Observer	None

B — Equipment Used

Equipment / Instrument	ID / Description	Quantity	Remarks
Automatic Level	LV-02	1	Compensator checked
Leveling Rod	LR-05	1	Serviceable
Steel Tape	ST-04; 30 m	1	Used for stationing and offsets
Offset Stakes	Stations and ± offsets	20	Labeled
Turning Plate	TP-Plate-01	1	Stable
PPE Set	High-visibility vest and closed shoes	6	Complete

III — Project Sketch and Photo Documentation

A — Project Sketch and Cross-Section Figure

FW10 cross-section showing existing ground, design formation, and cut-fill areas — FW10 — Cross-Section and Earthwork Quantities

B — Google Maps Location Points

Point / Area	Map Record	Purpose / Limitation
Alignment limits	Verified pins for Sta. 0+000 and 0+060 required in actual report	Geographic context
Alignment route	Marked Google Maps line required in actual report	Site orientation and access
Stations and offsets	Field stationing record	Engineering geometry remains authoritative

C — Photo Documentation — Dedicated Page

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

Photo	Image File	Description
1	FW10-photo-01.jpg	Centerline station and offset points established
2	FW10-photo-02.jpg	Rod observation at a left-side offset
3	FW10-photo-03.jpg	Cross-section line viewed normal to the alignment
4	FW10-photo-04.jpg	Completed field notes showing station and offset labels

IV — Observations and Data

A — Existing Ground and Computed Formation Data

Station	Offset (m)	Existing Ground (m)	Design Formation (m)	Ground − Formation (m)	Condition
0+000	-6	100.400	99.880	+0.520	Cut
0+000	-3	100.250	99.940	+0.310	Cut
0+000	0	100.100	100.000	+0.100	Cut
0+000	+3	100.050	99.940	+0.110	Cut
0+000	+6	99.950	99.880	+0.070	Cut
0+020	-6	100.100	99.980	+0.120	Cut
0+020	-3	100.020	100.040	-0.020	Fill
0+020	0	100.050	100.100	-0.050	Fill
0+020	+3	100.120	100.040	+0.080	Cut
0+020	+6	100.080	99.980	+0.100	Cut
0+040	-6	100.000	100.080	-0.080	Fill
0+040	-3	100.050	100.140	-0.090	Fill
0+040	0	100.080	100.200	-0.120	Fill
0+040	+3	100.020	100.140	-0.120	Fill
0+040	+6	99.960	100.080	-0.120	Fill
0+060	-6	100.050	100.180	-0.130	Fill
0+060	-3	100.120	100.240	-0.120	Fill
0+060	0	100.180	100.300	-0.120	Fill
0+060	+3	100.110	100.240	-0.130	Fill
0+060	+6	100.000	100.180	-0.180	Fill

B — Cross-Section Areas

Station	Cut Area (m²)	Fill Area (m²)
0+000	2.445	0.000
0+020	0.498	0.138
0+040	0.000	1.290
0+060	0.000	1.575

C — Average-End-Area Volumes

Interval	Length (m)	Cut Volume (m³)	Fill Volume (m³)
0+000 to 0+020	20.000	29.431	1.381
0+020 to 0+040	20.000	4.981	14.281
0+040 to 0+060	20.000	0.000	28.650
Total	60.000	34.413	44.313

V — Computations and Assumptions

The centerline formation rises at $+0.50\%$ from 100.000 m at Sta. 0+000, with a symmetric $2.00\%$ crossfall:

E_f(x,o)=100.000+0.005x-0.02|o|

Example at Sta. 0+020, offset $-6\text{ m}$ :

E_f=100.000+0.005(20)-0.02(6)=99.980\text{ m}

At Sta. 0+020, each sign-changing strip is split at the interpolated zero crossing before cut and fill areas are summed. Cut and fill are not netted within the mixed section.

Average End Area:

V=\frac{A_1+A_2}{2}L

First-interval cut volume:

V_c=\frac{A_{0+000}+A_{0+020}}{2}(20)=29.431\text{ m}^3

Net geometric balance:

44.313-34.413=9.900\text{ m}^3\text{ fill excess}

Assumptions and conventions:

Left offsets are negative and right offsets are positive.
Positive ground-minus-formation is cut; negative is fill.
Ground changes linearly between measured offsets for trapezoidal area computation.
Volumes use the Average End Area method over 20.000 m intervals.
No shrinkage, swell, stripping, topsoil, or unsuitable-material factor is applied.
Reported volumes use unrounded section areas; the area table is rounded to three decimals.
Existing-ground observations remain separate from computed formation elevations and quantities.

VI — Remarks and Conclusions

A — Remarks

The alignment transitions from predominantly cut to fill.
Offset stationing, rod plumbing, interpolation across irregular ground, and missed break points are probable error sources.
Material factors are excluded; quantities are geometric only.
Mixed cut/fill at Sta. 0+020 was split at zero crossings.

B — Conclusion

The calculated geometric totals are 34.413 m³ cut and 44.313 m³ fill, giving 9.900 m³ fill excess under the Average End Area method. These values do not include construction material adjustment factors.

Example filename: `G#1-P#10-Cross Sections and Earthworks.pdf`