|
|
|
|||||
|
|
|
|||||
|
|
|
|||||
|
|
|
|||||
|
|
|
|||||
|
|
|
|||||
|
|
|
|||||
|
|
|
|||||
|
|
|
|||||
|
|
|
|||||
|
|
|
|||||
|
|
|
|||||
|
|
Feb 16, 2011 Rehabilitation and Maintenance of Drains and Sewers Structure and Limiting Conditions of Sewer Systems - Historical Outline (Image: Standardised sewer cross sections with geometric values for fully filled to DIN 4263 (04.91) [DIN4263]) Sewers with the most varying cross sections and dimensions have been used since the beginning of modern sewage technology and some are still in use to this day. The most important cross-sectional shapes are the circular, the normal ovoid and the normal arch cross sections (Bild 1.3). The circular cross section was and still is preferred in … |
|||||
|
|
Nov 02, 2004 Rehabilitation and Maintenance of Drains and Sewers Structure and Limiting Conditions of Sewer Systems - Historical Outline Depth of cover is designated in EN 1610 [DINEN1610:1997] as the "vertical distance from the top of the pipe barrel to the surface". The depth of the cellar bottom to be drained normally defines the minimum depth of cover of the combined water and wastewater sewers. Taking into account the required minimum gradients of 1.0 % to 2.0 % for the laterals and pipes whose course follows the access path under all the supply lines, and the depth of the cellar … |
|||||
|
|
Nov 02, 2004 Rehabilitation and Maintenance of Drains and Sewers Structure and Limiting Conditions of Sewer Systems - Historical Outline Sewage is a mixture of water with the most varied solids among which there are also those that settle. Their sedimentation inside the sewers can be prevented if the velocity of discharge is not allowed to fall below a certain value. Frühling (1910) [Frühl10] and Braubach (1925) [Braub25] state that this value in larger collectors must not average less than 0.6 m/s to 0.7 m/s and that in smaller pipes, which sometimes run dry, about one-and-a-half … |
|||||
|
|
Nov 02, 2004 Private domain sewers are "Inaccessible pipelines laid in the earth or in the foundation that usually carry sewage to the lateral" [DIN1986:1998] (Bild 1.9.1) (Bild 1.9.1) (Bild 1.9.1).
|
|||||
|
|
Mar 02, 2011 News The World Bank The World Bank Board of Directors today approved a US$15 million grant to help Haiti’s efforts to fight the cholera epidemic.
|
|||||
|
|
Mar 09, 2011 News SusCon 3rd SusCon – International Conference on Sustainable Business and Consumption on 28/29 June 2011, in Nuremberg
|
|||||
|
|
Mar 10, 2011 News AFD (Agence française de Développement) This platform is open to all actors concerned by public water services and aims to improve drinking water supply services in small towns in developing countries.
|
|||||
|
|
Mar 16, 2011 News Asian Development Bank The Asian Development Bank's (ADB's) Board of Directors has approved a $1 billion financial support facility that will help improve clean water access for three million families in Viet Nam, including half a million poor households who will receive their own piped water connection for the first time.
|
|||||
|
|
(Image: Example of a water distribution system [DINEN805]) Water supply systems provide reliable and safe potable water supply to society as well as a water supply for commerce, trade, industry, agriculture and fire fighting. The actual distribution of water for the consumer is taken over by the water distribution system consisting of pipelines (water piping), water reservoirs, pumping stations and other installations. According to European standard … |
|||||
|
|
At the start of the 1960's, Germany started introducing energy-rich natural gas, which replaced the town gas generated from coal as well as the coke gas supplied over long distances that were available at the time [Altma83]. According to EN 12007 [DINEN12007-1], gas is a gaseous fuel that is gaseous at a temperature from 15°C and at atmospheric pressure (1.01325 bar absolute). It is used for supplying households with energy for heating, cooking and … |
|||||
|
|
District heating is a pipe guided energy whereby the thermal energy is generated by a central generating plant, usually a steam power plant or heating plant, and is fed with the aid of a compressor via pressure pipes to the consumer for space heating, hot water heating or production purposes and from there is led back again to the power or heating plant [AGFW93]. A difference is made between regional and district heating supply depending on the centralization … |
|||||
|
|
The largest number of drain and sewer systems are designated as gravity systems [DINEN752b] [DINEN476:1997] where, according to EN 752-1 [DINEN752b] "flow is caused by the force of gravity and where the pipeline (remarks: gravity pipe [DINEN12889:2000]) is designed normally to operate partially full". In the Federal Republic of Germany, drain and sewer systems are divided into two parts: drain systems and sewer systems. Drain systems are understood, … |
|||||
|
|
(Image: Arrangement of a pressure sewerage system (PSS) [DINEN1671]) According to EN 1671 [DINEN1671] a pressure sewerage system (PSS) is a "system for transporting domestic wastewater comprising a single pressure pipe or a branched network of pressure pipes (Remarks: branched or meshed network (Abschnitt 1.1.1)) where the pressure generating equipment is always located at the upstream end of the pressure pipe(s). The disposal point is the point the … |
35 search results:
