Construction & estimating · Site operations
Concrete pour planner calculator
Number of agitator trucks, trucks needed in rotation, pour duration, finish time and cost for a concrete pour.
Standard: Truck cycle · pump rate · pour duration
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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 |
|---|---|---|
| Pour volume | 84 | m³ |
| Truck capacity | 7.4 | m³ |
| Pump rated output | 45 | m³/h |
| Placing efficiency | 0.65 | |
| Plant supply limit | 40 | m³/h |
| Truck round trip | 75 | min |
| Start time (24 h) | 6.5 | h |
| Pump set-up and wash-out | 1.5 | h |
| Concrete rate | 290 | $/m³ |
| Pump hire | 260 | $/h |
Worked example — results
| Result | Value | Unit |
|---|---|---|
| Truck loads | 12 | |
| Effective placing rate | 29.3 | m³/h |
| Pour duration | 2.87 | h |
| Minutes per truck | 15.2 | min |
| Trucks in rotation | 6 | |
| Finish (decimal h) | 9.37 | h |
| Concrete + pump cost | $27,052 |
- ✓ Pour finishes before 15:00 — 9.4 h
Method, formulas and assumptions
- Rate = min(pump × efficiency, plant supply)
- Fleet = ⌈round trip / minutes per truck⌉ + 1 spare
- 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.