Franz Tscheikner-Gratl

Franz Tscheikner-Gratl
Norwegian University of Science and Technology | NTNU · Department of Civil and Environmental Engineering

PhD
Associate professor for urban water systems at NTNU

About

32
Publications
5,765
Reads
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611
Citations
Citations since 2016
20 Research Items
575 Citations
2016201720182019202020212022020406080100120
2016201720182019202020212022020406080100120
2016201720182019202020212022020406080100120
2016201720182019202020212022020406080100120
Additional affiliations
April 2019 - present
Norwegian University of Science and Technology
Position
  • Professor (Associate)
September 2018 - January 2019
Delft University of Technology
Position
  • PostDoc Position
March 2017 - March 2018
Delft University of Technology
Position
  • Senior Researcher

Publications

Publications (32)
Article
Due to the changes in water management, from the construction of new systems to the rehabilitation of existing networks, integrated strategic rehabilitation management has become more and more important. Consequently, this paper shows a method that considers sewer and water distribution networks against environmental factors (e.g. street network an...
Article
In the past decades, the main focus of water supply management has moved from construction of new water supply networks to rehabilitation and adaptation of the existing infrastructure. The decision-making process for the rehabilitation management relies heavily on the quality of the applied deterioration model. A recurring problem in the applicatio...
Article
The urban water structure is aging and in need of rehabilitation. Further, the need to address future challenges (climate change, urban development) also arise lines. This study investigates if it is possible to combine rehabilitation and adaptation measures. To do so, we combined an urban development model, an urban drainage model and a rehabilita...
Article
From a scientific point of view, it is unquestioned that numerical models for technical systems need to be calibrated. However, in sufficiently calibrated models are still used in engineering practice. Case studies in the scientific literature that deal with urban water management are mostly large cities, while little attention is paid to the diffe...
Article
The decisions taken in rehabilitation planning for the urban water networks will have a long lasting impact on the functionality and quality of future services provided by urban infrastructure. These decisions can be assisted by different approaches ranging from linear depreciation for estimating the economic value of the network over using a deter...
Article
Full-text available
Among the most important decisions water companies must make are Pipeline Rehabilitation Plans (PRPs) for Water Distribution Networks (WDNs). Such plans are faced with a variety of problems in prioritizing the pipes and in determining their preferred rehabilitation strategies. In this regard, an expert decision-making group can aid water companies...
Conference Paper
Norway’s water utilities lose on average 30 % of valuable drinking water through leaks. Many municipalities are transitioning from a passive to an active leak control strategy to reduce these unnecessary losses by utilizing model-based leak localization approaches. These model-based methods find leaks by combining sensor data with hydraulic compute...
Article
Full-text available
The prosperity of urban life is dependent on its infrastructure. Urban underground infrastructure components (assets) are aging and need regular monitoring, maintenance and rehabilitation. These assets are often placed under pavements and in close vicinity to each other. Managing them in a coordinated way is rational considering costs and disruptio...
Conference Paper
Full-text available
Brief abstract summary: (Limit-Max 100 words) Traditionally, model-based approaches are widely used for leak detection in Water Distribution Networks (WDNs). However, these methods are computationally expensive for larger networks and are highly dependent on the model accuracy. In this work, we propose a hybrid modelling framework for leak detectio...
Article
Full-text available
Sensors used for wastewater flow measurements need to be robust and are, consequently, expensive pieces of hardware that must be maintained regularly to function correctly in the hazardous environment of sewers. Remote sensing can remedy these issues, as the lack of direct contact between sensor and sewage reduces the hardware demands and need for...
Article
Full-text available
Visual inspection is currently the industry standard for assessing sewer and stormwater pipelines – a method prone to uncertainties as shown by previous studies. The data gathered from the visual inspection procedures is the main information base on which rehabilitation and replacement strategies are founded in current practice. Consequently, this...
Article
This study assessed the feasibility of electrochemical oxidation (EO) for the removal of organic compounds in cold climate regions. A two-level full factorial design was used to test the effect of three factors, temperature (6/20 °C), anode material (Pt/BDD) and pH (7/10) on the degradation of Bisphenol A. Due to the use of a chloride electrolyte,...
Article
Full-text available
Sewer asset management gained momentum and importance in recent years due to economic considerations , since infrastructure maintenance and rehabilitation directly represent major investments. Because physical urban water infrastructure has life expectancies of up to 100 years or more, contemporary urban drainage systems are strongly influenced by...
Article
Full-text available
Receiving water quality simulation in highly urbanised areas requires the integration of several processes occurring at different space-time scales. These integrated catchment models deliver results with a significant uncertainty level associated. Still, uncertainty analysis is seldom applied in practice and the relative contribution of the individ...
Article
Full-text available
The calibration of models for urban drainage systems has become more and more important as especially the usage of detailed models has increased considerably over the last years as the basis for planning and design. Still the effects originating from the choice of data used for model calibration are little known and advice on planning measurement c...
Article
Full-text available
This paper aims to stimulate discussion based on the experiences derived from the QUICS project (Quantifying Uncertainty in Integrated Catchment Studies). First it briefly discusses the current state of knowledge on uncertainties in sub-models of integrated catchment models and the existing frameworks for analysing uncertainty. Furthermore, it comp...
Article
The hydraulic verification of combined sewer systems as well as the assessment of combined sewer overflows (CSOs) can be conducted using a hydrodynamic model. Unfortunately, long-term simulations with hydrodynamic models for the assessment of CSOs can cause unacceptably long computation times. Using only a series of storm events instead of a precip...
Article
Urban drainage systems are designed to capture the runoff for a certain return period of a design rainfall event. Typically, numerical models are used, which are calibrated by comparing model response and measured system performance. The applicability of such models to predict the system behaviour under extreme events is unclear, as usually then no...
Article
Pipe failure modelling is an important tool for strategic rehabilitation planning of urban water distribution infrastructure. Rehabilitation predictions are mostly based on existing network data and historical failure records, both of varying quality. This paper presents a framework for the extraction and processing of such data to use it for train...
Article
Full-text available
Although calibration of a hydrodynamic model depends on the availability of measurement data representing the system behavior, advice for the planning of necessary measurement campaigns for model calibration is scarce. This work tries to address this question of efficient measurement site selection on a network scale for the objective of calibratin...
Technical Report
Full-text available
This deliverable provides a framework for the application of uncertainty analysis in integrated urban water modelling. Its structure aims to provide a help for modellers by including the different uncertainties into a good modelling approach. Therefore, next to extensive literature for further information, a real world case study, which exemplary s...
Article
Urban drainage networks are under constant pressure caused by a permanently changing environment. For proactive planning, management, and adaptation of urban water infrastructure, a robust and comprehensive knowledge base is needed as decision support. This paper shows an integrated approach for decision support consisting of urban development mode...
Conference Paper
A closed landfill site has still to be managed for several decades in aftercare operation. Current studies predict that for almost all landfill sites the aftercare operation has to be prolonged for several decades in contrast to previously made assumptions. This means higher costs and economic problems for owners as the provision made cannot cope....
Conference Paper
The lifespan of urban water networks (e.g. water supply and sewer) and other infrastructure systems (gas distribution, streets, etc.) is limited. While for networks in larger municipalities (>50,000 inhabitants) various rehabilitation models exist, rehabilitation management of networks in small municipalities (water supply, sewer, gas supply, etc.)...
Conference Paper
As structures in urban water management have life expectancies up to 100 years and more, implemented water systems today are strongly influenced by historical decisions. In the same way, the current decisions will have a long-term impact on the systems. Therefore, it is also important to understand the decisions made in the past and its influence o...
Article
Aufgrund fehlender Modelle bzw. lückenhafter Daten ist man bei der Rehabilitierungsplanung von kleineren Wasserversorgungsnetzwerken zumeist auf Experteneinschätzungen angewiesen. Da in Österreich diese Expertendaten aber nicht strukturiert verfügbar sind, wurde in zehn (Markt-)Gemeinden bzw. Städten in Tirol und Vorarlberg, jeweils fünf pro Bundes...
Article
Rehabilitation management of small water supply networks usually depends on expert knowledge and experience, as models and reliable data for these networks are often missing. A structured compilation of this expert knowledge does not exist in Austria. Therefore a survey in ten municipalities of small to medium size in Tyrol and Vorarlberg was carri...
Article
Full-text available
Due to the change in water management from construction of new to rehabilitation of existing networks strategic rehabilitation management becomes more and more important. To deal with the upcoming rehabilitation demand in times of limited public budgets the identification of areas with high priority for rehabilitation is necessary. Consequently thi...
Article
Building measures in sewer systems are increasingly driven by rehabilitation/retrofitting and adaptation needs. Aging infrastructure together with changing boundary conditions (due to climate change, land-use change, demographic change) and also changing design standards and legislation require a prospective design to preserve the functionality of...

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Cited By

Projects

Projects (2)
Project
Quantifying Uncertainty in Integrated Catchment Studies (QUICS) was an EU funded FP7 Marie Curie Initial Training Network (ITN) which ran for 4 years from 1st June 2014. Outputs will continue to be added after the end of the project, many of the fellows will continue to work on PhDs into 2019. The overall aim of QUICS is to provide high levels of training and carry out research in order to take the implementation of the Water Framework Directive (WFD) to the next level and improve water quality management by assessing the uncertainty of integrated catchment model water quality predictions. The project will employ twelve Early Stage Researchers (PhD Fellows) and four Experienced Researchers. The QUICS ITN comprises 9 partners who are universities, research institutes and commercial enterprises where the researchers will be based. The project also includes 7 associate partners who are involved in training and also host the researchers during secondments. This project has received funding from the European Union’s Seventh Framework Programme for research, technological development and demonstration under grant agreement no 607000. For further information see www.quics.eu.