Earthworks: cut-and-fill and volume calculations
A volume calculation is the difference between two surfaces: existing ground versus the design surface (cut and fill), or the ground on two different dates (periodic earthworks). A dense drone-derived terrain model uses far more points than the traditional cross-section method — and the result is repeatable.
What you get
Cut and fill volumes (m³) and the balance, a cut/fill heat map, cross-sections at your chosen interval (DWG), a calculation schedule (XLSX) and a PDF report covering method, accuracy and assumptions.
Applications
- Interim valuations and quantity checks
- Stockpile and quarry volumetrics
- Cut/fill balance planning
- Laydown and spoil area monitoring
Interim valuations and quantity verification, stockpile measurement (sand, aggregate, coal, scrap), quarry production tracking, cut/fill balance planning, laydown and spoil area monitoring, and fill settlement checks.
How it’s calculated
The existing ground is surveyed by drone and a DTM is produced; the design surface is imported or built digitally. The difference between the two surfaces is calculated cell by cell, with cross-sections provided for comparison using the average end area method.
What affects accuracy
Ground control, vegetation (the ground isn’t visible), standing water and how stockpile toes are defined. Reusing the same control points on repeat surveys keeps periods consistent.
How it works
- ScopingWe confirm the site location and extent, the deliverables you need and the accuracy required, and check airspace permissions and site conditions.
- Flight planning and ground controlOverlap, flight altitude and ground sampling distance (GSD) are set to meet the spec; ground control points (GCPs) are surveyed with GNSS where required.
- Data captureThe site is flown to plan, capturing imagery and position data with RTK/PPK positioning.
- Photogrammetric processingImages are aligned, a dense point cloud and surface model are generated and tied to the GCPs, and accuracy is verified against independent checkpoints.
- QA and deliveryDeliverables are produced in your coordinate reference system (e.g. ITRF96 / TM zone) and file formats, and handed over with an accuracy report.
File formats
PDF report, DWG sections, XLSX
FAQs
How quickly can you measure a stockpile?
The flight itself usually takes hours; processing and reporting time depends on the site. We confirm turnaround at the proposal stage.
Can the report be used in a valuation dispute?
Yes. It documents the method, dated survey data and accuracy figures, so it can be used to compare quantities between the parties and submitted to the client’s engineer.
What if there’s no design surface?
We compare surveys from two dates (periodic earthworks) or calculate volume against a specified reference level.
Services behind this deliverable
Geomatics and engineering surveying
Topographic surveys, setting out, spot height plans, existing conditions surveys, cut-and-fill and volumes, as-built, road, corridor, utility and mine surveys — carried out under a licensed survey engineer.
Aerial mapping
Drone photogrammetry, RTK/PPK surveying, orthomosaics, topographic surveys, DSM/DTM, point clouds, volumes and cross-sections — the data capture layer of Dronemeters.
Monitoring and change detection
Construction and mine progress monitoring, cut-and-fill change, development, forest, coastline, erosion and landslide monitoring; time-series orthomosaics, 4D GIS and scheduled flights.
Related deliverables
3D terrain model
A 3D model of the ground and everything on it — surface model (DSM), bare-earth model (DTM), classified point cloud and textured mesh.
GeoTIFF (DSM/DTM), LAS/LAZ, OBJ, 3D TilesProgress monitoring
A dated record of surface change and construction progress, built by comparing surveys flown on different dates.
GeoTIFF, SHP, PDFTopographic survey
A layered, scaled digital survey to Turkish large-scale mapping standards, with spot heights, contours, buildings and site features.
DWG, DXF, NCZ