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DWA-A 131E - Activated Sludge Plants (6/2016)

Special IFAT-Offer: price 35% offUsing the dimensioning values recommended in this Standard, the minimum requirements for municipal wastewater with single-stage activated sludge plants can be met or bettered at national level. In contrast to earlier editions, in which the dimensioning procedure for nitrifying and denitrifying activated sludge plants was based on the measured BOD5 load... Learn More

DWA-A 100E - Urban Drainage (12/2006)

As a framework of action concerning the detailed regulations for urban drainage, this Standard is intended to Learn More

DWA-A 118E - Hydraulic Dimensioning (3/2012)

This DWA Standard concerns the dimensioning and verification of drain and sewer systems, which are mainly operated as gravity systems and which serve for the discharge of domestic and industrial wastewater, surface water and combined wastewater. It contains guidance for determining the quantities of wastewater to be discharged, taking into account both the replanning and the recalculation of exist... Learn More

DWA-A 125E - Pipe Jacking (12/2008)

This Standard deals with the underground installation of pre-fabricated pipes with different geometry of the cross-section. During the installation, a cavity is created in the ground by displacing, ramming, drilling, pressing or other installation. The pipes are pulled, pushed or pressed into this cavity or existing sewers or pipelines are passed and/or replaced. For shield drives (e. g. segment l... Learn More

DWA-A 138E - Facilities for Percipitation (4/2005)

The Standard ATV-A-138 dated January 1990 has been revised and increased it considerably in the area of application. In addition the symbols used have been matched to those in Standard ATV-DVWK-A 198 published in April 2003. The recording of all surfaces providing runoff in one standard with notes on special regulations enables a comparable taking into account of the demands of soil and water poll... Learn More

DWA-M 144-3E - ZTV Hose Liner Process (11/2012)

Damaged drains and sewers represent a hazard to the environment, especially the groundwater and soil. Various experiences have been made in rehabilitating damage using renovation processes with locally cured hose liners. Part 3 of the Advisory Guideline DWA-M 144 supplies supplementary harmonised, standardised technical contract conditions (ZTV) for this process. The supplementary technical contra... Learn More

DWA-M 149-4 - geographical techniques (7/2008)

The Advisory Leaflet makes recommendations and provides information on measuring techniques, by means of which bedding defects and cavities can be detected in the surrounding of earth-buried pipelines. It describes possible applications and application limits of the measurement methods ground-penetrating radar (GPR), geoelectricity as well as seismic technology.Additionally, research and developme... Learn More

DWA-M 153 - Action for Dealing Stormwater (8/2007)

This DWA-Guideline includes recommendations how to treat rainwater quantitatively and qualitatively in modified drainage patterns or serperate sewerage systems. It analyzes and structures complexe correlations as follows: - pollution and quantity of rainwater regarding to utilisation and pavement of origin surface, - protection requirement of groundwater, - protection requireme... Learn More

DWA-A 161E - Static calculation (3/2014)

The standard was published in May 2018, based on the German edition of March 2014 in the corrected version of October 2017. This standard applies to the structural calculation of pipes with a circular cross-section which are installed according to the pipe jacking method in a straight or bending direction in non-cohesive or cohesive soils (loose soils as according to DIN 18319) with static force ... Learn More

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