Precision Leveling
Elevation precision down to a tenth of a millimeter
What is a leveling survey?
In a leveling survey we record the height difference between points relative to a fixed reference. In the Netherlands that reference is almost always the Normaal Amsterdams Peil (NAP).
In a country where large parts lie below sea level, reliable elevation measurements are essential. Whether it is a foundation check, a floor flatness measurement or settlement monitoring: the elevation has to be right, down to a tenth of a millimeter.
Equipment & software
- Leica DNA03
- Precision leveling staffs
- Total station
Elevation survey referenced to NAP
We perform precision leveling in line with the Normaal Amsterdams Peil (NAP, the Dutch national height reference). By tying our measurements to NAP benchmarks in the area, we guarantee that your elevation data fits the national reference system. That is essential for permits, structural calculations and preventing flooding.
Precision leveling as the most accurate method
Besides precise leveling (the most accurate method) we also deploy trigonometric height measurements and GNSS, depending on the required accuracy and the situation on site.
When is a height survey required on your project?
A height survey is needed for foundation work, floor verification, settlement monitoring and dike inspections. It also applies when drainage levels or sewer connections have to be set relative to NAP. Which method we use depends on the accuracy your project requires.
Floor flatness surveys in warehouses and halls
In warehouses and production halls we measure the floor for flatness. With the leveling instrument we record the elevation at every measurement point, so you can see where the floor deviates and over what distance. You use that result when accepting a new floor or when deciding whether an existing floor needs repair.
What you receive after the leveling survey
Precision leveling (0.1mm accuracy)
NAP referencing
Settlement measurements
Floor verification and flatness measurements
Frequently asked questions about leveling surveys
The most asked questions about Precision Leveling. Question not listed? Feel free to get in touch.
NAP (Normaal Amsterdams Peil) is the national reference level for elevations in the Netherlands. Tying measurements to NAP makes them comparable with other projects and usable for permits and structural calculations.
With our digital leveling instrument (Leica DNA03) we achieve an accuracy of 0.1mm per kilometer double-leveled. This is the most accurate method for elevation measurements.
For foundation work, floor verification, settlement monitoring, dike inspections and any project where elevation relative to NAP is relevant. Also for determining drainage levels and sewer connections.
Precise leveling is the most accurate method (0.1mm). GPS elevation measurements are faster but less accurate (2 to 3cm). For foundations and precision work we use leveling. For terrain surveys, GPS is often sufficient.
“We are very satisfied with the dimensional control service across various projects. From the very first contact, communication has run smoothly.”
“Michael had everything worked out the day before and was able to come the very next day. Delivers good work and is professional. We are very satisfied.”
“The dimensional control service was excellent. The team delivered accurate and timely results, which kept the project running smoothly.”
Services often combined with leveling surveys
Deformation Monitoring
Detect settlement before damage occurs. Periodic measurements at quay walls, bridges and industrial structures give you timely insight.
As-built Verification
Verify that everything is where it should be. As-built measurements make deviations immediately visible so you can adjust in time.
Land Surveying
Lay the geodetic foundation for your project. From site survey and topography to setting out, so your construction team can get started immediately.
Request a quote for Precision Leveling
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