A critical stage in any contract, it is important to realise the importance of precise, control and level datum's.

By correctly traversing survey control and applying any necessary corrections, a tight, error free system can be assured. Local grids that are parallel to square gridlines and transformed CAD drawings can then be created to facilitate setting out.

Primary, Secondary and GPS Survey Control

The key to accurate and reliable setting out or survey is a three dimensional network of control, Virtually all projects start with the establishment of control, whether prior to the Topographic survey or initial setting out. ASES can provide and maintain control through the various phases of development. In addition to the use of Leica TS60 high accuracy totalstations we implement the use of Leica Digital levels and Barcode Invar staff for high accuracy level (Z) requirement control.

With access to the Ordnance Survey and by using Leica RTK rovers we can quickly provide primary control in OS National grid.

Removed or missing control can be resolved using GPS or local networks replaced by creating a best fit control network, ensuring setting out is relative to key structures.

Mini 360

The provisions of datum's at various stages in the job can be easily transferred where required, for example at brickwork stage or accurate height referencing for screeding at any floor level.

Whatever the requirement, the latest, calibrated instruments are used, ensuring minimised error from the whole to the part.

Time to discuss your project…

We are ready to talk about your requirements to see how we can help you.

Get in Touch


  • GPS Survey Control
  • Precise Levelling
  • Traversing
  • Best Fit
  • OS Ordnance Survey

Explore Further


Setting Out

With over 20 years’ of site experience ASES specialise in setting out at any stage of a project. We understand the importance of accuracy in setting…

View Service