Vibro stone columns
Vibro stone columns are unreinforced pile-like structural elements. They belong to the group of displacement piles and can be used as load-bearing or foundation elements for transferring loads from structures to load-bearing soil strata. The structural elements are produced on site in the in-situ subsoil.
Regulatory framework
There are no conclusive technical rules for the design and execution of these structural elements. DIBt grants general construction technique permits (aBG) for corresponding applications.
The executing company must submit a declaration of conformity stating that the executed columns comply with the provisions of the construction technique permit.
The use of these techniques for ground improvement is permitted from a regulatory point of view and does not require a construction technique permit. The specifications set out in Eurocode 7 (EN 1997) apply.
National procedure
To prepare an abZ/aBG for your construction product, we need an application from you. We recommend that you contact us prior to doing so. Feel free to send us your enquiry informally via email to dibt(at)dibt(.)de or to the competent technical contact listed in the top right.
For a first assessment, please send us the following information:
- Description of the construction product and its intended field of use
- e.g. material, configuration, number of sizes, variants, dimensions
- e.g. use in walls, ceilings, interior construction, building services
- Description of the construction technique and its field of application
- e.g. design of walls, ceilings, elements, etc., and interaction of components
- e.g. application in foundation engineering, reinforced concrete construction, building insulation; as load-bearing or non-load-bearing component; under static and quasi-static loading; fire exposure; other environmental exposures
- Information regarding impact on regulatory concerns
- in particular structural integrity, fire protection, health and environment protection, sound insulation as well as thermal performance
- Explanation of need for an abZ/aBG
- Do you significantly deviate from the Technical Building Rules?
- Or do neither Technical Building Rules nor generally recognised technical rules exist?
- Contact details
- preferably email address and/or telephone number, as well as name, organisation/company, and postal address
We will then contact you to clarify the next steps.
If you already hold a DIBt approval and/or construction technique permit and wish to apply for an amendment, supplement, or renewal, please use the form provided below.
- pdf-Datei Application for amendment / supplementation / renewal of a national technical approval and/or construction technique permit (4 pages ) Last updated: 10 April 2024; Application form
| Subject concerned | Applicant | Decision no. |
Validity
from / to |
|---|---|---|---|
| Betonrüttelsäulen | Keller Grundbau GmbH Kaiserleistraße 8 63067 Offenbach | Z-34.2-2 |
Z:
13.03.2024 G: 03.03.2029 |
| Vermörtelte Stopfsäulen (VSS), Fertigmörtel-Stopfsäulen (FSS) und Beton-Stopfsäulen (BSS) | Keller Grundbau GmbH Kaiserleistraße 8 63067 Offenbach | Z-34.2-3 |
Z:
04.10.2021 G: 03.10.2026 |
| Rüttel-Ortbeton-Pfähle (ROB-Pfähle), Rüttel-Stopfbeton-Säulen (RSB-Säulen), Vermörtelte Rüttelstopfverdichtungssäulen (RSVv-Säulen) | BAUER Spezialtiefbau GmbH BAUER-Straße 1 86529 Schrobenhausen | Z-34.2-5 |
Z:
12.02.2025 G: 04.08.2029 |
| Ortbetonrüttelsäulen (ORS) Ortbetonstopfsäulen (OSS) | PORR Spezialtiefbau GmbH Walter-Gropius-Straße 23 80807 München | Z-34.22-201 |
Z:
05.08.2024 G: 26.07.2029 |
| Rüttel-Betonsäulen (RBS) und Fertigbeton-Stopfsäulen (FBS) | ECOSOIL Ost GmbH Laugkfeld 29 01968 Senftenberg | Z-34.22-206 |
Z:
17.12.2025 G: 04.01.2031 |