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For reasons of safety, excavations and trenches with sloping walls, as well as sloped edges, are only to be accessed after the stability of the earth or rock walls is ensured. This also holds true for excavations and trenched yet to be lined, for as long as the respective shoring has not been inserted [DIN4124:2002]. |
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In addition, according to [DIN4124:2002], protective strips have to be established around the edge of the excavation or trench, as well as at access points. These protective strips have to be at least 2 ft (0.61 m) in width, preferably horizontal and have to be kept free of excavation material and other obstacles. (Image: Safeguarding of trenches and shafts without lining for depths > 4 ft / 1.25 m and ≤ 6 ft / 1.75 m in accordance with [DIN4124c] – … |
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Animation: Exercise Work safety - Minimum working distance [Animation: visaplan GmbH]. This interactive object is only visible in the online version of the module. |
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Animation: Exercise Work safety - Excavator – Danger zone [Animation: visaplan GmbH]. This interactive object is only visible in the online version of the module. |
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Animation: Exercise Work safety - Traffic control [Animation: visaplan GmbH]. This interactive object is only visible in the online version of the module. |
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Congratulations! You have successfully finished this lesson. Next you will have the opportunity to review the newly acquired knowledge with an interactive questionnaire. You can of course still navigate back to any point in the lessons if you wish to review a specific point or subject. Stay curious! |
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May 13, 2019 The aspects of occupational health and safety that must be taken into account in the context of civil engineering work, especially in the construction of pipelines and sewers using the open cut method, are very diverse. They harbor a considerable potential for danger for those working on the construction site, but also for uninvolved persons. After completing this module, you will have knowledge regarding:
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Apr 14, 2005 Publication with friendly permission of the MUNLV NRW, Düsseldorf, Germany. Imprint Editor Compilation and Editing Picture Editors This guideline was originally published in German by the Ministry for Environment … |
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Jun 29, 2004 (Image: Dr.-Ing. Robert Stein) To the proper development of new construction areas also belongs the sewage disposal, of course. Also in the future it will remain necessary to build sewers new within the scope of site development. When rehabilitating sewers, which will be one of the main tasks of the local authorities, municipalities or sewer operators in the future, to an increasing degree a new line is chosen in dependence on its load and its condition, … |
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May 28, 2004
According to latest estimations [Dohma97], in the Federal Republic of Germany approximately 2000 km of sewers will have to be newly installed each year until 2015 with an investment volume of over 1.2 billion € per year. Over 80% of these sewers are < DN/ID … |
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Aug 03, 2005 For planning, draft, call for tenders, construction preparation, realisation, final acceptance and billing of construction measures for the new installation of sewers by means of trenchless installation, all EN standards and regulations by the DWA (German Association for Water, Wastewater and Waste e.V., since November 2004 called ATV or ATV-DVWK), which are valid in the Federal Republic of Germany for the planning and construction of drain and sewer … |
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Aug 03, 2005
(e.g. methods mts 400 [FI-mts], RVS 80 and 160 [FI-Wirthb], BM 300, 400 and 500 [FI-Bohrt], PBA … |
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Aug 03, 2005 (e.g. methods mts 400 [FI-mts], RVS 80 and 160 [FI-Wirthb], BM 300, 400 and 500 [FI-Bohrt], PBA 85 [FI-Schmi])
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Aug 03, 2005 |
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May 28, 2004 (e.g. method BM 500 [FI-Bohrt])
Method of operation and sequence 1st phase: steered pilot boring (bore hole diameter 419 mm) to the target shaft according to the soil removal principle with the help of a jacking station installed … |
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Aug 03, 2005 In general the following techniques of unmanned, steerable pilot pipe jacking, in the literature also known as guided boring, are applied, whereas the jacking is always carried out in two (Abschnitt 3.1.1.1) (Abschnitt 3.1.2) or a maximum of three (Abschnitt 3.1.1.2) sequential phases:
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May 28, 2004 (e.g. methods mts 1000 [FI-mts], RVS 100 A and 250 A [FI-Wirthb])
Method of operation … |
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May 28, 2004 (e.g. methods AVN [FI-Herreb], mts 1000 [FI-mts], RVS 100 AS and 250 AS [FI-Wirthb], MTB-S [FI-Hazem]) (Image: Microtunnelling with hydraulic spoil removal in single phase jacking) Method of operation and sequence Microtunnelling with hydraulic spoil removal is characterized by the jacking of pipes with simultaneous full-face excavation of the mechanically and liquid pressure balanced working face. Further features are a cutting head and continuous … |
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Aug 03, 2005 (e.g. methods AVP [FI-Herreb], MTB-P [FI-Hazem]) (Image: Microtunnelling with pneumatic spoil removal) Method of operation and sequence Microtunnelling with pneumatic spoil removal on the basis of a suction plant is characterized by the jacking of pipes with simultaneous full-surface excavation by a cutting head of the mechanically or earth-pressure balanced working face as well as by the continuous conveying of spoil out of the excavation chamber inside … |
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Aug 03, 2005 The unmanned, steerable microtunnelling techniques employed base generally on the principle of soil removal. Depending on the way of conveying the spoil, it is differentiated between:
In all cases the different soil- and rock types are taken into account by the different … |
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Aug 03, 2005
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Aug 03, 2005 On the German market more or less standardized jacking pipes, which are made of various materials and which are also employed in the open-cut method of construction and also have different nominal sizes, are offered for the application case at hand and for the methods dealt with here by observing ATV-A 125E [ATVA125:1996], EN 12889 [DINEN12889:2000], EN 14457 [DINEN14457:2004] and the corresponding product standards (Bild 4.1) (Bild 4.1) (Bild 4.1) |
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Aug 03, 2005 The connections of jacking pipes, called pipe joints or joints in the following, must ensure that the following criteria are met:
Examples of suitable pipe joints in the form of flexible, non-restrained socket and spigot joints according to EN 14457 [DINEN14457:… |
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Aug 03, 2005 Jacking pipes are to be delivered packed and are to be stored on the construction site in such way that they are secured against rolling and sliding also in the case of individual withdrawal [ATVA125:1996] [BGI780]. Excessive stacking heights should be avoided so that pipes in the lower part of the stacks are not overloaded. Stacks of pipes shall not be placed close to open trenches or shafts. Pipes with protective coatings shall not be stored where … |
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