Survey on the Condition of Road Gully Systems in Germany (Part 1)
Apr 30, 2009
Since the second half of the 19th century, waste water systems are built and run systematically in Germany according to the respective engineering rules to be considered. In the sense of the Water Resources Act, they serve for draining of sewage, that is to say, for collecting, draining off, treating, discharging, seepage, and for the land treatment of waste water. From an economic point of view, drain and sewer systems as "systems for collecting and discharging sewage in the form of waste water and/or surface water" represent the most important part. In compliance with DIN EN 752 [1], they include the area where the sewage leaves a building or a roof drain, or where it enters a road gully, up to the point where the wastewater is discharged into a wastewater treatment plant or receiving water. According to this definition, a drain and sewer system consists of three parts, namely the sewer system, the drain system, and the road drainage.
- General Information on the Drain and Sewer Network
- General Information on Road Gullies
- Cleaning of Road Gullies
- Inspection of Road Gullies
- Rehabilitation of Road Gullies
- Road gullies with floor drain, also called dry systems or road gullies for dry sludge (Straßenabläufe mit Bodenauslauf, auch Trockensystem oder Straßenablauf für Trockenschlamm) [6], subsequently called SB in short (see Figure 8 a and b).
- Road gullies with sludge space, also called wet systems or road gullies for wet sludge (Straßenabläufe mit Schlammraum, auch Nasssystem oder Straßenablauf für Nassschlamm) [6], subsequently called SS in short (see Figure 8 c and d).
[2] Berger, C.; Lohaus, J.: Zustand der Kanalisation in Deutschland – Ergebnisse der DWA-Umfrage 2004, Hennef (2004).
[3] Federal Statistical Office: Öffentliche Wasserversorgung und Abwasserbeseitigung 1998, UmweltTechnical Series 19, Volume 2.1, Publishing house: Metzler und Pöschel, Stuttgart, 2001.
[4] Falk, Ch., Weidemann, S.: Zustand, Sanierungsbedarf und Sanierungsmöglichkeiten der Einsteigschächte in kommunalen Entwässerungsnetzen; Ergebnisse einer im Auftrag der Elastogran GmbH, Lemförde durchgeführten Umfrage, September, 2004.
[5] DIN 4052 (2006): Betonteile und Eimer für Straßenabläufe; Teil 1: Bauart und Einbau (Concrete elements and buckets for road gullies; Part 1: General requirements and installation); Teil 2: Zusammenstellungen und Bezeichnungen (Part 2: Summary and designations); Teil 3: Betonteile (Part 3: Concrete elements); Teil 4: Eimer (Part 4: Buckets), Publishing House: Beuth Verlag, Berlin.
[6] RAS-Ew (2005): Richtlinien für die Anlage von Straßen (RAS), Teil: Entwässerung (RAS-Ew), Forschungsgesellschaft für Straßen- und Verkehrswesen (FGSV), Köln (Cologne).
[7] Stein, R. (2008): Auswirkungen optimierter Straßenabläufe auf Feststoffeinträge in Kanalisationen (Effects of optimised road gullies on the entry of solids into the sewer system), Dissertation, RWTH-Aachen.
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