Millimetric Stockpile Volumetrics

Drone Stockpile Surveys & Volumetric Calculations

Eliminate inventory guesswork and hazardous manual grade walking. TerraX3D delivers rapid, certified drone volumetric calculations, cut/fill balancing, and 3D digital elevation models for mines, quarries, bulk aggregate yards, and construction earthworks across South Africa.

Request Stockpile Survey View Deliverables
Drone stockpile volumetric survey 3D terrain mesh
±1.0% Volumetric Precision
< 24h Report Turnaround
100% Zero-Hazard Survey
CAD & GIS Standard Formats

End-to-End Geospatial Volumetrics

Precision Cut, Fill & Stockyard Inventory

Traditional ground surveying of loose stockpiles is dangerous, slow, and leaves gaps in complex top surfaces. Our UAV LiDAR and photogrammetry workflows capture millions of coordinate points across the entire stockpile footprint in minutes.

Stockpile Volume & Tonnage

Automated base surface triangulation and digital terrain modeling calculate exact cubic meters (m³), combined with custom bulk density factors for certified financial stock auditing.

  • Coal, Aggregate, Sand & Ores
  • Monthly audit variance tracking

Cut & Fill Earthwork Analysis

Compare actual site ground progress directly against design CAD/TIN surfaces. Quantify cut volumes, fill deficits, and verify civil earthmoving contractor claims.

  • Heatmaps with elevation differentials
  • Interim progress billing validation

Quarry & Pit 3D Terrain Mapping

Generate high-resolution digital surface models (DSM) and ortho-rectified aerial basemaps of active quarry faces, highwalls, haul roads, and bench progressions.

  • Highwall slope stability inspection
  • Haul road gradient & safety auditing

Technical Deliverables & Compatibility

Certified outputs delivered directly to your civil engineering, GIS, and ERP platforms.

Deliverable Component Format / Specification Typical Use Case
Certified Volume PDF Report PDF, Excel CSV Financial auditing, monthly inventory reconciliation
3D Point Clouds LAS, LAZ, E57, XYZ Civil 3D, AutoCAD, Carlson, Bentley MicroStation
Digital Elevation Model (DEM/DTM) GeoTIFF, ESRI Grid, DXF Contours Hydrology modeling, drainage, slope analysis
High-Res Orthomosaic GeoTIFF (sub-2cm GSD), ECW, KML GIS visual layers, site boundary auditing, Google Earth
Frequently Asked Questions

Volumetric Surveying FAQ

Using RTK/PPK-enabled drone LiDAR and high-resolution photogrammetry with surveyed ground control points (GCPs), our volumetric calculations achieve accuracy margins within 1% to 2% of actual physical volume.
We calculate raw cubic meters (m³) using digital surface models (DSM) and multiply by material-specific laboratory or compaction density factors (t/m³) to provide certified tonnage reports.
Site flights typically take 1-3 hours depending on quarry/stockyard size, with full 3D volumetric reports, CAD contours, and cut/fill maps delivered within 24 to 48 hours.
Yes. We perform comparative surface-to-surface and surface-to-design elevation differential models to accurately quantify cut volumes, fill requirements, and net earthmoving balance.

Need Stockpile & Quarry Inventory Audited?

Contact our aerial geomatics team today for certified volumetric surveying and cut/fill analysis across Gauteng, Mpumalanga, Limpopo, and South Africa.

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