Development of worksheet DWA-A 127-1
Static calculation of drainage systems
6 February 2019: The German Association for Water, Wastewater and Waste e. V. (DWA) plans to develop a worksheet DWA-A 127-1 "Static calculation of drainage systems - Part 1: Fundamentals". The technical committee ES-5 "Construction" (chairman: Dipl.-Ing. Jörg Henning Werker) has commissioned the DWA working group ES-5.4 "Static calculation of sewage pipes and sewers" (spokesman: Bauass. Dipl.-Ing. Karl-Heinz Flick).
The worksheet will contain a general introduction to statics and its fundamentals as well as explanations of the safety level, the process flow and references to the other worksheets and information sheets in the series. Furthermore, references and connections with the associated rules (e.g. Worksheet DWA-A 139, Worksheet DWA-A 125, etc.) are to be explained. In particular, the linking of static calculation and construction execution is in the foreground.
The ATV-DVWK-A 127 worksheet has proved its worth for the static verification of underground sewers and sewers and has been included in the European series of standards DIN EN 1295 "Static calculation of underground pipelines under various loading conditions".
In the meantime, topics have been added to the static analyses in drainage systems, such as
- Landfill leachate pipes
- Renovation systems
- Profiled plastic pipes
- Shafts [Manholes]
In future, these and other topics will be summarised in the planned set of rules, for which the introductory Part 1 "Fundamentals" will be developed.
The working and information sheets of the main committee drainage systems, which deal with the topic "static calculation", are to be summarised in this set of rules with the main title "Static calculation of drainage systems". The working and information sheet series DWA-A/M 127 is structured as follows:
| Rule set number | Title of the part of the set of rules | Status/Comments |
| DWA-A 127-1 | Fundamentals | Newly developed; project description has been published. |
| DWA-A 127-2 | Solid wall pipes in trench installation | Currently published as ATV-DVWK-A 127, revised as Part 2 of the A/M series 127 |
| DWA-A 127-3 | Profiled plastic pipes in trench installation | Currently under development. [IngSoft actively participates.] |
| DWA-A 127-4 | Cylindrical, underground shafts | Currently under development. [IngSoft actively participates.] |
| DWA-A 127-5 | Pipe jacking | Currently published as worksheet DWA-A 161. The future revision will appear as part 5 of the A/M series 127. |
| DWA-A 127-6 | Rehabilitation using lining and assembly methods | Currently published as worksheet DWA-A 143-2. The future revision will appear as part 6 of the A/M series 127. |
| DWA-A 127-7 | Refurbished structures | Will be newly developed; project description still pending |
| DWA-A 127-10 | Material characteristics | Currently being developed; published as draft April 2018 |
The DWA welcomes instructions for processing.
DWA Federal Headquarters
Dipl.-Ing. Christian Berger
Theodor-Heuss-Allee 17, 53773 Hennef, Germany
Phone +49 2242 872-126
Fax. +49 2242 872-184
E-mail: Team-ES_at_dwa.de
Source: DWA PRESS INFORMATION 5/2019 [in German]
