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Example data
| Scenario | Perimeter | Width | Method | Rate | Dilution | Waste |
|---|---|---|---|---|---|---|
| Typical perimeter trench | 60 m | 0.30 m | Linear | 5 L/m | 1:50 | 10% |
| Higher coverage strip | 45 m | 0.40 m | Area | 10 L/m² | 2% | 8% |
| Small foundation | 30 m | 0.25 m | Linear | 4 L/m | 1:33 | 5% |
These are illustrative inputs only. Always confirm your local code and the product label for permitted rates and mix ratios.
Formula used
- Treated strip area (m²) = Perimeter (m) × Trench width (m)
- Trench volume (m³) = Perimeter (m) × Width (m) × Depth (m)
- Trench capacity (L) = Trench volume (m³) × 1000
- Finished solution (L):
- Linear method: Perimeter (m) × Rate (L/m)
- Area method: Treated area (m²) × Rate (L/m²)
- Final solution with waste (L) = Finished solution × (1 + Waste% / 100)
- Concentrate (L) = Final solution × Concentrate fraction
- Water (L) = Final solution − Concentrate
- Containers to buy = ceil(Concentrate ÷ Container size)
- Concentrate fraction:
- Ratio mode: Conc parts ÷ (Conc parts + Water parts)
- Percent mode: Percent ÷ 100
How to use this calculator
- Measure the foundation perimeter and select the correct unit.
- Enter your intended trench width and depth.
- Select the method that matches your label guidance: linear or area rate.
- Enter the application rate from the label or project specification.
- Choose a dilution method and input the ratio or percent mixture.
- Add a waste factor to cover mixing losses and uneven absorption.
- Enter container size to estimate how many you should purchase.
- Click Calculate and review the totals above the form.
- Use CSV/PDF exports to keep job records and purchase notes.
Why volume planning matters for soil treatments
Accurate volume planning reduces downtime, wasted concentrate, and uneven application around the foundation. Under‑mixing can force extra batches, while over‑mixing increases disposal and compliance risk. This calculator converts measured perimeter and trench dimensions into a practical finished-solution target for procurement and batching. It also standardizes unit conversions so field notes and purchasing totals remain consistent.
Choosing the right application rate
Labels and specifications commonly express rates as liters per meter of perimeter or liters per square meter of treated strip. Linear rates suit perimeter trenching and rodding. Area rates suit wider treated zones, such as under‑slab bands or external apron strips. Select the method that matches your scope and documentation. When in doubt, use the rate stated for your construction type and soil condition.
Dilution and concentrate fraction
Most concentrates are mixed by a parts ratio, such as 1:50, or by a stated percent mixture. The calculator converts either input into a concentrate fraction, then splits the final solution into concentrate and water volumes. This supports consistent mixing across multiple tanks and helps prevent concentration drift between batches. For larger jobs, repeatable fractions improve crew handoffs and reduce rework.
Allowances for waste and site variability
Jobsite losses come from hose priming, tank residue, absorption differences, and small measurement errors. Adding a controlled waste factor improves the chance of completing the application without emergency resupply. Keep the allowance modest and record it, especially when inspections require documented quantities and mixing logs. If soil is highly porous or trenches are irregular, validate with a small test batch first.
Purchasing, batching, and record keeping
Container planning translates concentrate volume into whole containers, rounding up to avoid shortages. Use the trench capacity value as a geometric check, not an application directive. Export the CSV or PDF summary for work orders, safety files, and client handover notes, including the chosen rate, dilution, and measured dimensions. Store records with date, crew, and weather to support audits and warranty claims.
FAQs
Which units should I use for measurements?
Use the units you measured on site. The calculator converts feet, inches, millimeters, and centimeters into meters for consistent totals. Keep perimeter, width, and depth aligned with your field notes for easier verification and reporting.
Should trench depth change the required solution volume?
Depth is shown for geometric trench capacity only. Required solution volume is driven by the application rate on the label or specification. Use depth to sanity‑check trench dimensions, not to replace the stated rate.
How do I choose between linear and area methods?
Pick the method that matches your label direction or project specification. Perimeter trenching is often expressed as liters per meter, while wider treated strips may be expressed as liters per square meter.
What waste factor is reasonable?
Many crews allow 5–15% for hose priming, tank residue, and small measurement errors. Use a higher value only when site conditions justify it and document the reason for quality control and compliance.
How is concentrate volume calculated from a mix ratio?
The ratio is converted to a concentrate fraction: concentrate parts divided by total parts. That fraction is multiplied by the final finished-solution volume to produce concentrate required, and the remainder is water.
Can I export results for my job records?
Yes. After calculating, use the CSV or PDF buttons to download a summary of inputs and totals. Attach the file to work orders, inspection paperwork, or client closeout documentation.