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News from the working groups

DWA-A 161 and DWA-A 127 worksheets

Figure: Ingenieurbüro für Rohrstatik Dr.-Ing. Schmidt-Thrö

→ 1 Example of a pipeline installed in a curved jacking process

Figure: Ingenieurbüro für Rohrstatik Dr.-Ing. Schmidt-Thrö

Figure: Ingenieurbüro für Rohrstatik Dr.-Ing. Schmidt-Thrö

→ 2 Load transfer in the case of continuous and discontinuous pipe base support

Figure: Ingenieurbüro für Rohrstatik Dr.-Ing. Schmidt-Thrö

Introduction

Quite a number of papers were presented at past editions of this congress to report on progress in the drafting of the above worksheets. Since only little hands-on experience has been gained so far in applying the new DWA-A 161:2014 version, this paper highlights various new aspects and their consideration in structural analyses and in the use of related programs. Furthermore, points will be discussed that continue to leave room for interpretation.

The part on the DWA-A 127 worksheet will cover several newly introduced points and topics that have not yet been finalized.

It should...

Related articles:

Issue 02/2018 The new DWA-A 127 worksheet

Structural analysis of sewers and drains – what will change?

Worksheet A 127 is currently under revision, analogously to the already completed DWA-A 161. The aim of this paper is to discuss briefly the most significant changes in DWA-A 127-1, which correspond...

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Issue 02/2013

New checking regulations for pipes and manholes subjected to traffic loads

In this context, previous and frequent reports have appeared on new approaches for the structural design of pipes subjected to traffic loads. Since the final version of DWA-A 161 is scheduled to be...

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Issue 02/2018 The new Worksheet DWA-A 139

Construction and testing of drains and sewers

The revised edition of Worksheet DWA-A 139 includes the supplementary notes and further explanations on DIN EN 1610 Construction and testing of drains and sewers (Einbau und Prüfung von...

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Issue 02/2017 Update on DIN EN 1610, DWA-A 127, DWA-A 157

DWA-A 139 – Effects of excavator-mounted compactors on soil and installed pipelines

Joint publication of DIN EN 1610 and DWA Worksheet A 139 The publication of the German version of EN 1610:2015-12, Construction and testing of drains and sewers, necessitated a revision and...

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Issue 02/2019 Innovative pipe design

Jacking pipes made of reinforced concrete

In an urban environment and usually in lower lying areas mechanical pipe driving in contrast to the open-trench method is a pipe-laying method for sewers that reduces the restrictions for the...

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