Registra3D
Topographic survey

Topographic survey with 3D laser scanning

We capture the exact geometry of terrain, urban developments, slopes and infrastructure with millimetre precision. Delivery of DTM, contour lines, volumes and topographic plans.

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Why traditional surveying falls short

A total station captures singular points: it leaves out most of the terrain geometry.

Measuring slopes, roofs or hard-to-reach areas is slow and risky with traditional methods.

Volume calculations based on cross-sections are approximate, not densely sampled.

Integrating topographic data with architectural or BIM plans requires manual reconciliation work.

Laser surveying: the entire terrain, not just a few points

3D laser scanning captures millions of points per station. Every square metre of terrain is documented with millimetre precision.

3D laser scanning of terrain and built elements in a single day (Trimble X7).

GNSS georeferencing to integrate with official cartography and land registry.

Digital terrain models (DTM) and contour lines at the density the project requires.

Cut/fill volume calculations with centimetre precision.

Direct integration with BIM workflows and urban development, civil engineering and building projects.

Topographic survey deliverables

Topographic DWG plans with contour lines

Georeferenced digital terrain model (DTM)

Triangulated 3D mesh for volume calculations

Classified point cloud (ground, vegetation, buildings)

Report with quality control and reference coordinates

Integration with ICGC / land registry cartography if required

Real case

Topographic survey of the Sitges seafront promenade. Combined terrestrial scanning + GNSS georeferencing. Delivery of topographic plans, DTM and a navigable 3D model.

Real case

Frequently asked questions about topographic surveying

A total station captures singular points (one by one). The scanner captures millions of points per station, documenting the entire terrain. For complex geometries or when dense information is needed, the scanner is far superior.
Yes. We combine laser scanning with GNSS so the point cloud is in ETRS89 / UTM coordinates. This allows integration with official ICGC cartography, the land registry and other surveys.
The Trimble X7 delivers ±2 mm at 10 m. Combined with GNSS for global georeferencing, the absolute error of the survey is typically 2-5 cm depending on terrain conditions and extent.
Our main tool is the Trimble X7 terrestrial laser scanner combined with GNSS. When a project requires aerial coverage (large extensions, slopes, inaccessible roofs) we coordinate with AESA-certified drone pilots as external collaborators.
From the initial and final point clouds we generate triangulated meshes. The difference between the two meshes yields the exact volume with centimetre precision. Far superior to the traditional cross-section method.

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We'll reply with timeline and indicative quote at no cost. Response in under 24 business hours.

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