Construction & estimating · Site operations
Compaction production and lifts calculator
Number of lifts, roller output and days to place and compact a fill platform.
Standard: Roller output = W·v·t·E / passes
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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 |
|---|---|---|
| Fill area | 4200 | m² |
| Fill height | 1.8 | m |
| Loose lift thickness | 250 | mm |
| Effective roller width | 1.9 | m |
| Rolling speed | 3.5 | km/h |
| Passes per lift | 6 | |
| Job efficiency | 0.75 | |
| Hours per day | 9 | h |
Worked example — results
| Result | Value | Unit |
|---|---|---|
| Lifts | 8 | |
| Roller output | 207.8 | m³/h |
| Fill volume | 7,560 | m³ |
| Roller hours | 36.4 | h |
| Working days | 4.0 | d |
Method, formulas and assumptions
- Output = W × v × 1000 × lift × E / passes
- Confirm passes and lift thickness with a compaction trial and the earthworks specification
- Rates and productivities are example inputs. Replace them with supplier, plant-hire and crew figures for your site.
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For preliminary design and education. Check every result against the current standard and your own engineering judgement before use.