Site investigation · Laboratory: rock & aggregates
Sand equivalent calculator
Sand equivalent from clay and sand readings in the graduated cylinder (mean of trials).
Standard: AS 1141.26 · ASTM D2419
Open the live calculator → All site investigation calculators
Inputs in the worked example
The live calculator starts with these values; change any of them and every result, check and diagram updates instantly.
| Input | Value | Unit |
|---|---|---|
| Trials: clay reading, sand reading | 5.2, 3.4 5.0, 3.3 | |
| Specification min | 50 |
Worked example — results
| Result | Value | Unit |
|---|---|---|
| Sand equivalent (mean) | 65.69 |
- ✓ SE ≥ min
Method, formulas and assumptions
- Sand equivalent (mean) = AVERAGE([t.se]) = 65.692
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For preliminary design and education. Check every result against the current standard and your own engineering judgement before use.