Swell, shrink, and truck loads
Loose and compacted volumes from a bank volume with your swell and shrink factors, and the truck loads to haul it.
Experimental: not yet fully verified. How results are checked
That is 1,250 yd³ loose, or 105 truck loads.
- Truck loads
Provenance
- Computed by
- survey.earthwork.shrink-swell 1.0.0, core 0.1.0
- Model
- Loose = bank × (1 + swell); compacted = bank × (1 − shrink)
- Accuracy
- Exact for the factors given; real factors vary with soil and moisture
- Notes
- 1 shown with the answer
- Cites
- Ghilani, C. D., and Wolf, P. R., Pearson, Elementary Surveying: An Introduction to Geomatics
Something look off?
How we got thisFormula, worked example, sources, and proof
Model: Loose = bank × (1 + swell); compacted = bank × (1 − shrink)
Accuracy: Exact for the factors given; real factors vary with soil and moisture
Worked example: 1,000 bank yd³ at 25% swell in 12 yd³ trucks. Source: add-survey-suite scenario: 1,250 loose yd³, 105 loads. It is golden test vector v001, and every build checks the tool still gives its answer within its tolerance.
You enter
- Bank volume
- 1000 yd3
- Swell
- 25
- Truck capacity
- 12 yd3
You get
- Loose volume
- 1,250 yd³
- Truck loads
- 105
Review: Not yet independently reviewed by a licensed surveyor.
Last verified: 2026-09-23, when a maintainer last confirmed this tool's sources at the issuer. See the sources ledger.
Status: version 1.0.0, core 0.1.0. See this tool in the verification report.
Checked against: 5 golden test vectors (download the test vectors, each with its source and tolerance). See how results are checked and every source.
Sources
- Elementary Surveying: An Introduction to Geomatics, Ghilani, C. D., and Wolf, P. R., Pearson, 16th edition. Chapters 10 (traverse computations), 12 (area), 24 (horizontal curves), 25 (vertical curves), 26 (volumes).
Experimental means this tool has not yet met the stable bar: at least 20 golden vectors, differential tests, and an independent worked example.