Plan injection work with clear volume estimates ahead. Compare void sizes across multiple pours quickly. Download a tidy summary for your job file now.
Estimate mudjacking grout volume for slabs accurately today. Include lift thickness, waste factor, and units easily. Export results to reports for crews and clients fast.
| Unit system | Length | Width | Thickness/Lift | Sections | Waste | Estimated total volume |
|---|---|---|---|---|---|---|
| Imperial | 20 ft | 10 ft | 1.5 in | 1 | 10% | ~9.17 ft³ (≈0.34 yd³) |
| Imperial | 30 ft | 12 ft | 2.0 in | 2 | 15% | ~138.00 ft³ (≈5.11 yd³) |
| Metric | 6.0 m | 3.0 m | 4.0 cm | 1 | 10% | ~0.79 m³ (≈792 L) |
Start by defining the slab sections that will be lifted. Measure length and width for each section, then confirm boundaries at joints, cracks, and edges that stop grout migration. Record measurements in the same units used on site to prevent conversion mistakes. Note any utility trenches or soft subgrade areas, because they can change void continuity and require phased pumping.
Void thickness drives volume more than any other input. Take several probe or level readings across the panel, especially near corners and midspan, then use an average lift thickness. If the slab is rocking, consider splitting the job into smaller sections with different thickness values. When the target is only re-support, use the minimum thickness that restores bearing, not the maximum gap observed.
Waste factor covers material left in lines, overfill at low points, and losses during mixing. Tight access, long hose runs, and frequent pauses typically increase waste. Many crews start with 10 percent, then adjust using previous job records and material behavior. If you expect backflow from relief cracks or open edges, add extra waste and plan containment.
For planning, cubic feet and cubic yards are useful for bulk ordering, while cubic meters and liters help when mixing in batches. This calculator converts outputs automatically, and the downloads provide a clean summary that can be shared with dispatch, foremen, and clients. If you track product yield per bag, you can estimate bag count and reduce staging delays. Include date, location, and crew notes for traceable reporting later.
Compare calculated volume to actual pump totals to refine future estimates. Track slab area, lift thickness, waste, hole count, and final elevation change. Record pressure behavior and refusal points, because they can indicate blocked flow paths. Consistent documentation supports cost control, prevents shortages, and improves bid accuracy over time. Over multiple projects, these records help standardize crew productivity and material forecasting.
It is the typical gap you want to fill under the slab. Measure several points, then use a realistic average. If thickness varies widely, calculate separate sections and add the totals.
Hole volume is usually small, but it can matter on dense drilling patterns or deep holes. Enable the hole allowance when you want a conservative estimate and cleaner reconciliation with pumped totals.
Start with 10% for straightforward access and short hose runs. Increase it for long lines, frequent starts, edge leakage, or uncertain void geometry. Use your past job data to calibrate.
Yes. Enter yield per bag to estimate bag count, or enter density to estimate total weight or mass. These estimates support staging, transport, and mixing plans, but always confirm product specifications.
Actual volume depends on void continuity, grout travel paths, refusal points, and overfill needed to stabilize the slab. Document pressures, lift achieved, and losses to refine future inputs and waste factors.
Use cubic yards or cubic meters for bulk purchasing and batching. Use cubic feet or liters for small-mix planning. The downloads capture inputs and outputs so your team can order consistently.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.