External tendons
For external post-tensioning, the tendons lie outside the cross-section of the concrete member, but inside the envelope of the structure. These post-tensioning systems are used for prestressing concrete members made of normal weight concrete. They are largely designed in accordance with DIN EN 1992-1-1:2011-01 in conjunction with DIN EN 1992-1-1/NA:2013.
Regulatory framework
DIBt grants national technical approvals (abZ) for post-tensioning systems and their components.
European Technical Assessments (ETAs) can also be issued for post-tensioning kits.
Please note that there are no conclusive technical rules for the design and execution of structural works using prestressing systems – except for pre-tensioning at the factory in accordance with DIN EN 1992‑1‑1:2011‑01, Clause 5.10. In cases which are relevant from a regulatory point of view, a construction technique permit (aBG) is generally required. DIBt grants general construction technique permits for prestressing applications.
Note: The lists below may still include approvals for a construction technique, also called 'application approvals'. As a result of the revision of the Model Building Code (MBO) in 2016 followed by the revision of the applicable Building Codes of the federal states (LBO), these are successively being replaced by construction technique permits or will expire.
National procedure
A national technical approval (abZ) and/or oder general construction technique permit (aBG) is granted upon application (see Model Building Code (MBO), Sections 16a(2) and18(2) and (4)). This also applies to amendments and supplements to, or renewals of existing approvals and/or construction technique permits.
No formal requirements apply. The following information is needed: name and address of the applicant, description of the product and/or construction technique and its field of use or application, type of decision required (new decision, amendment or supplement to, or renewal of, an existing decision).
Please feel free to use the template below.
- pdf-Datei Application for a national technical approval and/or construction technique permit (4 pages ) Version: 10 April 2024; Application form
- 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
- pdf-Datei Guideline: How to provide drawings for national technical approvals and general construction technique permits (5 pages ) Version: July 2017
European Technical Assessment (ETA)
To start the ETA procedure, please submit the form below. We will then check if the prerequisites for issuing an ETA are met, i.e., in particular, if the product is not fully covered by an existing harmonised standard. If the prerequisites are met, we will check whether a European Assessment Document (EAD) covering the requested assessment scope already exists or still needs to be developed. If an EAD needs to be developed or amended, a complete technical file needs to be established before the procedure can begin.
- pdf-Datei Form for requesting a European Technical Assessment (ETA) (2 pages ) Last updated: 10 April 2024
| Subject concerned | Applicant | Decision no. |
Validity
from / to |
|---|---|---|---|
| Litzenspannverfahren VT-CMM KD für externe Vorspannung | BBR VT International Ltd Bahnstraße 23 8603 SCHWERZENBACH/ZURICH SCHWEIZ | Z-13.3-110 |
Z:
15.10.2020 G: 03.09.2025 |
| BBV Externes Litzenspannverfahren Typ EW für Türme von Windenergieanlagen | BBV Systems GmbH Industriestraße 98 67240 Bobenheim-Roxheim | Z-13.3-133 |
Z:
11.01.2024 G: 21.12.2028 |
| SUSPA-Monolitzenspannverfahren für externe Anordnung nach DIN EN 1992-1-1 | DYWIDAG-Systems International GmbH Neuhofweg 5 85716 Unterschleissheim | Z-13.3-135 |
Z:
06.05.2020 G: 02.03.2025 |
| SUSPA-Draht EX für Windenergieanlagen | DYWIDAG-Systems International GmbH Neuhofweg 5 85716 Unterschleissheim | Z-13.3-141 |
Z:
16.04.2021 G: 25.03.2026 |
| Litzenspannverfahren VT-CMM D/KD für Windenergieanlagen | BBR VT International Ltd Ringstrasse 2 8603 SCHWERZENBACH/ZURICH SCHWEIZ | Z-13.3-143 |
Z:
12.03.2024 G: 16.04.2029 |
| BBV Typ LoE für externe Vorspannung und Anwendungsbestimmungen | BBV Systems GmbH Industriestraße 98 67240 Bobenheim-Roxheim | Z-13.3-157 |
Z:
05.03.2021 G: 03.07.2025 |
| Litzenspannverfahren VT-CMM D für externe Vorspannung | BBR VT International Ltd Bahnstraße 23 8603 SCHWERZENBACH/ZURICH SCHWEIZ | Z-13.3-78 |
Z:
15.10.2020 G: 21.09.2025 |
| Anwendungsregeln für das Litzenspannverfahren VBT 1 bis 16 extern nach ETA 10/0006 für externe Vorspannung | Gleitbau Ges. m.b. H. VBT-Systems Itzlinger Hauptstraße 105 5020 SALZBURG ÖSTERREICH | Z-13.73-100006 |
Z:
28.09.2020 G: 03.09.2025 |
| Anwendungsregeln für das BBV externe Spannverfahren Typ E nach ETA 11/0123 | BBV Systems GmbH Industriestraße 98 67240 Bobenheim-Roxheim | Z-13.73-110123 |
Z:
23.01.2020 G: 23.01.2025 |
| Anwendungsregeln für das Spannverfahren SUSPA-Draht Ex nach ETA-20/0810 | DYWIDAG-Systems International GmbH Neuhofweg 5 85716 Unterschleissheim | Z-13.73-200810 |
Z:
08.04.2021 G: 25.03.2026 |
| Anwendungsregeln für das Stabspannsystem zum Vorspannen von Tragwerken, extern nach ETA-05/0122 | Stahlwerk Annahütte Max Aicher GmbH & Co. KG Max-Aicher-Allee 1-2 83404 Ainring-Hammerau | Z-13.73-50122 |
Z:
15.11.2023 G: 15.11.2028 |
| Anwendungsregeln für das Stabspannsystem nach ETA-05/0123 zum externen Vorspannen von Tragwerken | DYWIDAG-Systems International GmbH Neuhofweg 5 85716 Unterschleißheim | Z-13.73-50123 |
Z:
11.07.2023 G: 28.06.2028 |
| Anwendungsregeln für das Spannverfahren SUSPA-Draht Ex nach ETA-07/0186 | DYWIDAG-Systems International GmbH Neuhofweg 5 85716 Unterschleissheim | Z-13.73-70186 |
Z:
25.03.2021 G: 25.03.2026 |
| Subject concerned | Applicant | Decision no. | Issued on |
|---|---|---|---|
| VBT BE 1 to 16 | Gleitbau Ges. m.b. H. VBT-Systems Itzlinger Hauptstraße 105 5020 SALZBURG ÖSTERREICH | ETA-10/0006 |
01.09.2015 |
| Anchor Heads for Ground anchors | Richard Münch GmbH Rüther-Münch-Straße 1-3 07926 Gefell DEUTSCHLAND | ETA-15/0551 |
29.01.2016 |
| BBV Anchor Heads for Ground anchors with 2 to 31 strands | BBV Systems GmbH Industriestraße 98 67240 Bobenheim-Roxheim DEUTSCHLAND | ETA-16/0262 |
14.10.2016 |