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DutchSurvey
Civil engineering — Precision   Leveling
Civil engineering

Precision Leveling

Elevation precision down to a tenth of a millimeter

Overview

Get reliable elevation data accurate to a tenth of a millimeter.

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.

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.

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.

Equipment & software

Leica DNA03Precision leveling staffsTotal station
Precision Leveling
NAPLevelingPrecision
Our approach

How we work.

From intake to delivery. Every step aligned with your schedule.

1

NAP referencing

We locate the nearest NAP benchmark and tie our measurement to it. This guarantees a reliable reference for all elevation measurements.

2

Leveling

With a digital leveling instrument we measure the elevation differences between all requested points. Every measurement is performed both ways for verification.

3

Closure check

We close the measurement loop on a second NAP point or the starting point to verify accuracy. The closing error must fall within the agreed tolerance.

4

Reporting

You receive an overview with all measured elevations relative to NAP, including an accuracy analysis and any deviations.

What we deliver

What you can expect.

Precision leveling (0.1mm accuracy)

NAP referencing

Settlement measurements

Floor verification and flatness measurements

SectorsFoundation checksFloor measurements in warehouses and hallsDikes and flood defensesConstruction projects
Frequently asked questions

FAQ.

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.

Pelle van OostWeComplete

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.

Marian KwakernaakParticulier

The dimensional control service was excellent. The team delivered accurate and timely results, which kept the project running smoothly.

Melvin van DrieOpdrachtgever
Request a quote

More about Precision Leveling?

We are happy to discuss the options for your project. Reach out to Michael for personal advice, no strings attached.

MvD
Michael van Drie
Owner Dutch Survey BV

No-obligation advice on the approach for your project. Usually a response within 24 hours.