Unbonded tendons
For internal unbonded post-tensioning, the prestressing tendons are arranged in a duct filled with a special corrosion protection system. 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 |
|---|---|---|---|
| SUSPA-Drahtspannverfahren intern ohne Verbund | DYWIDAG-Systems International GmbH Neuhofweg 5 85716 Unterschleissheim | Z-13.2-109 |
Z:
03.07.2024 G: 02.04.2029 |
| VBT-Monolitzenspannverfahren ohne Verbund nach DIN EN 1992-1-1 und DIN EN 1992-2 | VBT Vorspann- und Brückentechnologie GmbH Brookstraße 27 49497 Mettingen | Z-13.2-124 |
Z:
06.07.2022 G: 02.07.2027 |
| SUSPA-Monolitzenspannverfahren für Ringspannglieder nach DIN EN 1992-1-1 | DYWIDAG-Systems International GmbH Neuhofweg 5 85716 Unterschleißheim | Z-13.2-40 |
Z:
07.07.2022 G: 03.07.2027 |
| BBV Litzenspannverfahren Typ Lo ohne Verbund und Anwendungsbestimmungen | BBV Systems GmbH Industriestraße 98 67240 Bobenheim-Roxheim | Z-13.2-70 |
Z:
29.11.2023 G: 14.06.2027 |
| SUSPA-Monolitzenspannverfahren ohne Verbund für nachträglichen Einbau nach DIN EN 1992-1-1 | DYWIDAG-Systems International GmbH Neuhofweg 5 85716 Unterschleissheim | Z-13.2-95 |
Z:
06.05.2020 G: 02.03.2025 |
| Litzenspannverfahren zum internen Vorspannen von Tragwerken mittels Vorspannsystem VBT-BI ohne Verbund nach ETA-10/0308 | Gleitbau Ges. m.b. H. VBT-Systems Itzlinger Hauptstraße 105 5020 SALZBURG ÖSTERREICH | Z-13.72-100308 |
Z:
14.06.2024 G: 22.12.2028 |
| BBV internes Spannverfahren ohne Verbund nach ETA-13/0810 | BBV Systems GmbH Industriestraße 98 67240 Bobenheim-Roxheim | Z-13.72-130810 |
Z:
07.02.2020 G: 07.02.2025 |
| Monolitzen-Spannverfahren ohne Verbund zum internen Vorspannen von Tragwerken mittels des Vorspannsystems DYWIDAG-Einzelmonolitzenverankerung nach ETA-13/0814 | DYWIDAG-Systems International GmbH Neuhofweg 5 85716 Unterschleissheim | Z-13.72-130814 |
Z:
04.10.2024 G: 18.07.2029 |
| DSI Monolitzenspannverfahren L1-L7 mit Gussankern - allgemeine Bauartgenehmigung für die ETA-19/0077 | DYWIDAG-Systems International GmbH Neuhofweg 5 85716 Unterschleissheim | Z-13.72-190077 |
Z:
23.04.2021 G: 09.12.2024 |
| Allgemeine Bauartgenehmigung für das Stabspannverfahren nach ETA-21/0054 "Macalloy 1030" intern ohne Verbund | BBV Systems GmbH Industriestraße 98 67240 Bobenheim-Roxheim | Z-13.72-210054 |
Z:
21.12.2022 G: 21.12.2027 |
| Anwendungsregeln für das SUSPA/DSI Monolitzenspannverfahren ohne Verbund mit 1 bis 5 Monolitzen nach ETA-03/0036 | DYWIDAG-Systems International GmbH Neuhofweg 5 85716 Unterschleissheim | Z-13.72-30036 |
Z:
19.06.2023 G: 16.06.2028 |
| Anwendungsregeln für das Stabspannsystem zum Vorspannen von Tragwerken, intern ohne Verbund nach ETA-05/0122 | STAHLWERK ANNAHÜTTE Max-Aicher GmbH & Co. KG Max-Aicher-Allee 1+2 83404 Ainring - Hammerau | Z-13.72-50122 |
Z:
15.11.2023 G: 15.11.2028 |
| Anwendungsregeln für das Stabspannsystem nach ETA-05/0123 zum internen Vorspannen von Tragwerken ohne Verbund | DYWIDAG-Systems International GmbH Neuhofweg 5 85716 Unterschleißheim | Z-13.72-50123 |
Z:
11.07.2023 G: 28.06.2028 |
| Anwendungsregeln für das BBR VT CONA CMM - Spannverfahren ohne Verbund mit 01, 02 und 04 Litzen nach ETA-06/0165 vom 22.07.2016 | BBR VT International Ltd Ringstrasse 2 8603 SCHWERZENBACH/ZURICH SCHWEIZ | Z-13.72-60165 |
Z:
17.12.2021 G: 21.10.2026 |