Measurements
Use A + B mode when comparing against the supplied STI tank chart or when your GPR footprint is closer to the tank plan/body dimensions. Use A + C only where you actually know the tank diameter.
This is an estimating tool only. Confirm capacity using tank plate, bowser/site records, calibration charts, dip charts, potholing, or specialist tank contractor inspection where required.
Closest nominal capacity—
Actual chart capacity—
Confidence—
Enter two measurements, then press estimate.
Top matches
| Rank | Nominal | Actual | A / B / C dims | Matched on | Difference |
|---|
STI Consolidated Underground Tank Chart
| Type | Nominal L | Actual L | A overall | B body | C diameter | Mass kg |
|---|
Important note
The previous version treated the second number as a true cylinder diameter. That made a 3 m x 3 m entry calculate as a much larger tank. This version defaults to matching against the supplied chart dimensions A and B, so a tank around 3.2 m x 3.0 m returns the 5,000 L nominal tank.
Report wording
Based on the measured approximate UST dimensions of —, the closest reference match is a — nominal underground tank, with an actual chart capacity of —. This estimate is indicative only and should be verified against site records, calibration/dip charts, potholing or specialist tank contractor inspection.