Cut Fill Chainage Table Builder
A free, browser-based tool. Runs entirely in your browser — no sign up, nothing stored.
Chainage, existing & design RL
| Chainage (m) | Existing RL (m) | Design RL (m) | |
|---|---|---|---|
Cut = existing above design; fill = existing below design. Runs in your browser.
Cut / fill table
| Chainage | Existing | Design | Cut / fill |
|---|---|---|---|
| 0.000 | 50.000 | 50.200 | 0.200 fill |
| 10.000 | 50.500 | 50.200 | 0.300 cut |
| 20.000 | 51.000 | 50.200 | 0.800 cut |
Cut / fill = existing RL − design RL at each chainage. Volumes need a width and the average-end-area or prismoidal method — this is the level difference only.
How to use this calculator
- Enter the chainage, existing reduced level and design reduced level for each point.
- Add or remove rows to match your section or string line.
- Read the cut or fill at each chainage, with the maximum cut and fill.
How it works
At each chainage the level difference is existing RL − design RL: a positive value is cut (ground sits above the design), a negative value is fill (the design sits above the ground).
This builds the cut/fill column and the maximum cut and fill. It's the level difference only — earthwork volumes also need a width and the average-end-area or prismoidal method.
Worked example
Existing 50.0 / 50.5 / 51.0, design 50.2. Chainage 0 is 0.2 m fill, chainage 10 is 0.3 m cut, chainage 20 is 0.8 m cut — so the maximum cut is 0.8 m and the maximum fill is 0.2 m.
Frequently asked questions
Is cut existing minus design, or the other way round?
Existing minus design. If the existing ground is higher than the design, you cut it down (positive). If the design is higher, you fill up to it (negative).
Does this give me earthwork volumes?
No — it gives the cut/fill depth at each chainage. Volumes need the formation width and a method like average-end-area between chainages.
Is this official course material?
No. It is free study support mapped to surveying course levels — not official North Metropolitan TAFE content or advice. Always follow your lecturer and the official assessment brief, and check your own working.
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.