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Central contact

Heidelbergstraße 7
07554 Korbußen/b. Gera
Tel.: 036602-141 0
Fax: 036602-141 41

Main contact person:
Mrs. Franziska Mittag


Quality management system

Trigis Geoservices is certified

The internal quality management system of TRIGIS GeoServices ensures the fulfillment of the increasingly complex requirements of our services.

Standardized processes for project management and the thorough expert control of intermediate and final products are the guarantee for a high quality data product.

Remote sensing

For the certification a PSI deformation analysis was generated. This was tested and accepted by the DLR. TRIGIS is therefore certified throughout the EU for collaboration on regional and national terrestrial movement maps.

Persistent scatter interferometry

This method is based on satellite-supported radar images. Deformations of the earth's surface are measured on the basis of suitable reflections from buildings, rails, bridges, etc.

TRIGIS services:

  • For Amsterdam 39 Envisat photographs from 2003 – 2007 were evaluated.
  • For the Alkmaar region approximately 100 ERS photographs from 1992 – 2001 were evaluated, in addition to the 39 Envisat photographs from 2003 – 2007
  • For Amsterdam approximately 250,000 PSI measuring points were identified and evaluated
  • For Alkmaar approximately 256,000 PSI measuring points resulting from the ERS data and approximately 106,000 PSI measuring points from the Envisat data were evaluated.


Each measuring point describes the deformation history of the measured object with millimeter accuracy for the period indicated.

The DLR controlled and confirmed the results of the deformation calculations. The accuracy of the deformation rates (standard deviation) was determined to be 0.46 mm/year.

TRIGIS GeoServices is prequalified

Prequalification is the upstream and commission-independent testing and certification of proof of qualification according to the tendering and contract awarding ordinance for services (VOL). The company must have these documents in order to provide proof of its expertise, performance capability, compliance with legislation and reliability when bidding for public projects.


Advantages – a plus in terms of efficiency, seriousness and reliability

A prequalification means vastly higher legal security for both the company and the public client than the submission of individual items of proof. Prequalification limits formal exclusion criteria, also from very interesting offers, to an absolute minimum.

The nation-wide prequalification database for the supplier and services area includes all companies examined by commission consulting agencies or by chambers of industry and commerce for their suitability in the VOL area. These companies can be found according to different search criteria, such as name, location or industry code.

Further information can be found under

Quality assurance in building construction

Current investigations of DEKRA* show a consistently high level of serious structural defects in Germany.

In residential buildings alone, a damage level of 1.4 billion Euros per year was determined. The structural defects and their follow-up costs result in unplanned and extremely high additional costs for many building owners. These can easily exceed closely calculated financing plans. However, accompanying building quality monitoring can significantly reduce this cost risk.

Especially for complex projects, extended quality monitoring on the basis of a QA concept is absolutely essential and economically meaningful. This QA concept is developed together with the building owners, planning experts and building surveyors.


  • Fast recognition of defects
  • Immediate reaction
  • Demanding more care and better quality from the building contractors



The advantages of a QA concept accompanying building construction are apparent:

  • Building defects are verifiably minimized or completely avoided.
  • Building schedules are less jeopardized.
  • Additional costs are avoided.n


In relation to possible building damage the costs of quality monitoring are marginal and clearly defined from the start.


Quality monitoring accompanying building construction includes the following modules:

  • Building site and building elevation networks
  • Setting out axes and formwork controls
  • Elevation specifications and control
  • Evenness controls
  • Alignment and precision plumbing
  • Façade control measurements and setting out
  • Volume and mass calculations
  • As-built and building documentatio
  • Motion and deformation measurements

*SECOND DEKRA -REPORT ON BUILDING DEFECTS; DEKRA Real Estate Expertise GmbH; Saarbrücken, 2008