DELIVERABLES AND QUALITY CONTROL FOR VARIOUS TYPES OF LAND SURVEY

When you appoint NPM Geomatics to undertake a survey for your project, you can expect us to undertake the survey and supply you with deliverables and data which are correct, complete and comprehensive.

For topographic, site and setting out surveys, there are a host of different survey specifications used in the industry. Some are outdated versions of TMH11. Some are copied from foreign websites, which introduce unfamiliar terminology and uneceesary requirements in the local South African context.

Therefore, our bespoke Land Survey Specifications Matrix helps Built Environment Professionals provide appropriate and relevant survey specifications for tender and quote documents. The Matrix is available by emailing us on [email protected] and requesting the document. (Soon to be available on our upgraded website!)

All cadastral and property surveys must meet the requirements of the Land Survey Act (8/1997) in order to be accepted by the Surveyor General. This is especially true for beacon verification surveys. And it is essential to insist that the Beacon Certificate is signed by a Professional Land Surveyor.

Rigorous internal Health & Safety, Field and Office checking routines ensure that you receive survey data which you can rely on for your designs and projects.

Our deliverables are reliable and high quality data, aligned to the requirements of TMH11, our bespoke land survey protocols, or the Land Survey Act.

For example. For a standard topographic or tachy survey, NPM Geomatics, Professional Land Surveyors commit to providing a professional service with the following deliverables:

1. Land surveys are connected to the SA Hartebeeshoek 1994 datum, based on the WGS84 ellipsoid.

2. Heights are provided relative to mean sea level.

3. A survey of all visible features, floor levels, invert levels, change in slope, and other critical features. We do not simply survey a grid and hope for the best! In open areas, a grid of 15 – 20m is utilised, depending on the scope of the project.

4. For strip surveys, cross sections at 10m, 15m or 20m are provided, depending on the scope of the project.

5. Use of Total Station for hard standing surfaces, when required by project specification.

6. Use of digital level for benchmark heights, when required by project specification.

7. Use of survey grade RTK GPS, with SA2010 Geoid model for improved height accuracy for all other measurements.

8. A minimum of 2 concrete benchmarks, with a metal name tag, are provided for future use at construction phase.

9. A comprehensive Survey Report, signed by a professional land surveyor, detailing project methodology, equipment used, accuracy, establishment of control and any essential information of relevance to the client.

10. Control list of benchmarks with descriptions and method of fixing height.

11. Code list of all points in the DTM, with descriptions of the codes.

12. 3D drawing of all features and annotations, with 3D contours and 3D triangles, supplied as a DWG CAD file and PDF print.

13. DTM in Civil Designer ASCII format with breaklines, plus Land XML format. (Model Maker .tot file on request).

14. Where applicable, accurate cadastral data which has been reconstructed by a Professional Land Surveyor.

15. Where applicable, a cadastral overlay sourced from a public domain database which is provided for information purposes only.