Current News:

Register Now! 24th SAG Workshop - 15th – 16th June 2026

  • Invitation – 24th SAG Workshop - Topic: Exploring Measurement Instruments from Different Manufacturers  !SAFE THE DATE! 15th - 16th June 2026 Frankfurt am Main This workshop will be a collaborative space to explore the diverse range of measurement instruments and technical approaches used in static pulling tests and sonic tomography. The goal is to deepen technical skills and share know-how through practical handling and the study of field practices. Downloading this PDF will provide you with more information and a link to the registration form: More… … Read More
  • Dr. Ing. Lothar Wessolly has passed away - Dr. Ing. Lothar Wessolly passed away on 8 February 2026. Together with other colleagues, Lothar Wessolly founded the SAG Baumstatik e.V. in October 1996 and led the association as its first chairman for more than 12 years. → Obituary Dr. Ing. Lothar Wessoly … Read More
  • Report – Summer School & Lecture Day 2025 - From 28 September to 1 October 2025, 32 participants from nine countries gathered in Białowieża on Poland's eastern border for the second Summer School organised by the Sachverständigen Arbeitsgemeinschaft Baumstatik e. V (SAG). The event, which lasted several days, concluded with a lecture day, to which the general public was also invited. Immediately afterwards, on 2 October, the SAG held its annual general meeting. This year's Summer School began on Sunday, 28 September, with a highlight: divided into three groups,… … Read More

The Tree

is a complex biological organism whose functions are often only partially understood. Obviously, we can only promote and deepen this understanding if we adopt a broad interdisciplinary approach. For this purpose, all rationally comprehensible findings and research approaches should be noted and tested impartially for their practical applicability.

The SAG does not only want to use the resources of its members, but also aims for a specialist discussion with all representatives of specialist disciplines outside the SAG. Our work is not aimed at representing the interests of individual research methods and approaches. Existing methods should be discussed, evaluated and, as far as possible, integrated and further developed on the basis of new findings.

 

We

  • over 70 members
  • out of 11 countries
  • regular workshops
  • and membership meetings
  • lively exchange
  • open for new members!

Expert Skills

The expert working group Baumstatik is an internationally registered and non-profit association.
Our members come from the fields of forestry and engineering, biology, mycology, tree care and horticulture. These skills and experiences flow into an interdisciplinary collaboration.

The members of the disciplinary SAG Baumstatik e.V. have a wealth of experience in the field of tree statics. In addition to the high level of knowledge in the respective subject area, this is based, among other things, on the preparation of several thousand safety assessments on trees, on the basis of statically integrated, injury-free tensile tests. Our expertise is also reflected in the fact that almost all members of the SAG are publicly appointed and sworn in as experts (öbv SV) and thus act as appraisers in court.