Case Studies
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Earthwork Volume Calculation With XGRIDS L2 Pro — 2,000m² Construction Site Survey, Turkey
Earthwork volume calculations have traditionally required multiple crew members spending hours taking point-by-point measurements across construction sites.
The Challenge
Earthwork volume calculations have traditionally required multiple crew members spending hours taking point-by-point measurements across construction sites. These spot measurements create gaps that must be filled through interpolation, introducing calculation errors and potential disputes over quantities for invoicing.
Compounding the problem: excavation sites often include steep slopes, unstable terrain, and other hazardous areas. Traditional methods require surveyors to physically enter these zones to capture measurements, which could create occupational health and safety risks that extend project liability.
The Solution
Atlıhan Engineering deployed the XGRIDS L2 Pro to survey a 2,000m² earthwork site, using ground control points (GCPs) measured with survey-grade GPS for coordinate transformation.
Field Efficiency:
The L2 Pro's continuous scanning eliminates the setup-move-setup cycle required by traditional surveying equipment, reducing a half-day task to under 15 minutes.
- Crew: 1 person (vs. 2+ with traditional methods)
- Scan time: 10 minutes in single pass (vs. ~3 hours)
- Coverage: Complete site coverage with zero interpolation gaps
Technical Results:
Colorized Point Cloud Model
Site Cross-Section
Colorized Point Cloud Model
Site Cross-Section
- Point density: ~1,000 points/m² (vs. maximum 1 point/m² with traditional methods)
- Accuracy: Point-based control tests showed no measurable difference from GPS measurements
- Processing: 4 hours point cloud processing + 1 hour CAD/reporting
Elevation model of the 2,000 square meter excavation site.
Cross-section profile extracted from the point cloud, with coordinate table showing elevation values at regular intervals.
Topographic map generated from L2 Pro point cloud.
Cross-section profile with coordinate table showing station points and elevations.
Why Complete Coverage Matters
Traditional methods might take measurements every 50cm to approach similar accuracy, increasing fieldwork tenfold. More critically, the L2 Pro's dense point cloud captures the true terrain surface rather than approximating it through interpolation. This eliminates calculation errors from data gaps, particularly in hard-to-reach areas like steep slopes where physical access poses safety risks.
Okan ATLIHAN, Atlıhan Engineering:
"It is totally trustable and better than traditional methods. Since all details are measured with no missing data in excavation sites or hard-to-reach areas, calculations are more accurate and precise. The client chose L2 Pro for speed, data completeness, and achieving more precise calculation results."
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