Searched for: faculty%3A%22Civil%255C%252BEngineering%255C%252Band%255C%252BGeosciences%22
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Clemens, F.H.L.R. (author)
Het gescheiden houden van ‘vies’ en ‘schoon’ is een principe dat zo normaal is geworden dat er eigenlijk nog nauwelijks vraagtekens bij worden gezet. Gescheiden inzameling van glas, papier, metaal, oude kleding etc. is in de meeste ontwikkelde landen al lang staand beleid. Publiciteitscampagnes en onderwijs hebben het publiek vertrouwd gemaakt...
journal article 2014
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Bruni, G. (author), Reinoso Rondinel, R.R. (author), Van de Giesen, N.C. (author), Clemens, F.H.L.R. (author), Ten Veldhuis, J.A.E. (author)
journal article 2014
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Van Riel, W.A.P. (author), Langeveld, J.G. (author), Herder, P.M. (author), Clemens, F.H.L.R. (author)
Decision-making for sewer asset management is partially based on intuition and often lacks explicit argumentation, hampering decision transparency and reproducibility. It is unknown to what extent each information source is appreciated by decision makers. Further insight into this relative importance and into implicit factors, improves...
conference paper 2014
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Spekkers, M.H. (author), Kok, M. (author), Clemens, F.H.L.R. (author), Ten Veldhuis, J.A.E. (author)
journal article 2014
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Stanic, N. (author), Langeveld, J.G. (author), Clemens, F.H.L.R. (author)
There is still a long way to go in understanding the behaviour of solids in sewers due to the difficulties in obtaining sufficient monitoring data to be able to understand the dominant processes. Laser profilers have shown to be capable of measuring the pipe interior, with a high accuracy, which is sufficient to be able to detect and quantify...
conference paper 2014
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Post, J.A.B. (author), Pothof, I.W.M. (author), Ten Veldhuis, J.A.E. (author), Langeveld, J.G. (author), Clemens, F.H.L.R. (author)
It remains unknown how lateral house connections affect the performance of the sewer system, since the assessment of serviceability is mainly based on the state of the main sewer system. Further insight into the contribution of lateral house connections to the overall level of service provided can aid to target investments to parts of the system...
conference paper 2014
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Rombouts, P.M.M. (author), Tralli, A. (author), Langeveld, J.G. (author), Verhaart, F. (author), Clemens, F.H.L.R. (author)
Being able to accurately determine weir discharges is of key importance in urban water management. The most common method is performing a level measurement and calculating the discharge using the standard weir equation. Since this equation is only valid in certain conditions, this can lead to large deviations from the actual discharge. In this...
conference paper 2014
document
Stanic, N. (author), Salet, T. (author), Langeveld, J.G. (author), Clemens, F.H.L.R. (author)
The principle of structural behaviour of buried concrete pipes is fairly understood, except for how material deterioration affects structural behaviour and performance. Consequently, information on the structural behaviour of deteriorated sewer pipes will contribute to better understanding of the changes in status, which is essential for...
conference paper 2014
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Bruni, G. (author), Reinoso Rondinel, R.R. (author), Van de Giesen, N.C. (author), Clemens, F.H.L.R. (author), Ten Veldhuis, J.A.E. (author)
Cities are increasingly vulnerable to floods generated by intense rainfall, because of their high degree of imperviousness, implementation of infrastructures, and changes in precipitation patterns due to climate change. Accurate information of convective storm characteristics at high spatial and temporal resolution is a crucial input for urban...
journal article 2014
document
Van Riel, W.A.P. (author), Langeveld, J.G. (author), Herder, P. (author), Clemens, F.H.L.R. (author)
conference paper 2013
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Spekkers, M.H. (author), Zhou, Q. (author), Arnbjerg-Nielsen, K. (author), Clemens, F.H.L.R. (author), ten Veldhuis, J.A.E. (author)
Sewer flooding due to extreme rainfall may result in considerable damage. Damage data to quantify costs of cleaning, drying, and replacing materials and goods are rare in literature. In this study, insurance claim data related to property damages were analysed for the municipality of Aarhus, Denmark. The aim of this paper was to study the extent...
conference paper 2013
document
Spekkers, M.H. (author), Kok, M. (author), Clemens, F.H.L.R. (author), Ten Veldhuis, J.A.E. (author)
Intense rainfall may locally cause considerable damage in cities, e.g. because of sewer floods. A better understanding of relationships between rainfall characteristics and rainfall-related damage can help insurers and flood authorities to respond more adequately to rainfall extremes. This paper aims to study to what extent weather radars can be...
conference paper 2013
document
Rombouts, P.M.M. (author), Schilperoort, R. (author), Langeveld, J.G. (author), Clemens, F.H.L.R. (author)
The objective of this paper is to demonstrate the applicability of, and need for, surrogate sensors as robust sensors for water quality based RTC. For this purpose 1.5 years of level, conductivity (EC) and turbidity (TU) measurements at 9 combined sewer overflow (CSO) locations have been performed and analysed to determine the most polluted CSO...
conference paper 2013
document
Van Riel, W.A.P. (author), Langeveld, J.G. (author), Herder, P.M. (author), Clemens, F.H.L.R. (author)
Passend rioleringsbeheer is nodig om voldoende dienstlevering te balanceren met investeringskosten. Besluitvorming binnen rioleringsbeheer kan echter bemoeilijkt worden door gebrek aan data en interacties met verschillende actoren. Deze beperkingen zorgen veelal voor niet heldere en niet reproduceerbare besluitvormingsprocessen, die voornamelijk...
journal article 2013
document
Dirksen, J. (author), Van der Steen, A. (author), Langeveld, J.G. (author), Clemens, F.H.L.R. (author)
Previous research learned that the reproducibility of visual sewer inspection data is poor (Dirksen et al.). Further research by Arjan et al. showed that the applied coding system has a major influence on the reproducibility. The aim of this study was to give relevant suggestions to improve the quality by defining defects that are in the current...
conference paper 2013
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Bruni, G. (author), Reinoso Rondinel, R.R. (author), Ten Veldhuis, J.A.E. (author), Russchenberg, H.W.J. (author), Clemens, F.H.L.R. (author)
This study aims to assess the impact of different temporal and spatial rainfall resolutions on the hydrological response of a higly urbanized area. The catchment under study is one of the pilot locations of RainGain Interreg IVB project, which aims at improving fine-scale measurement and prediction of rainfall to enhance urban pluvial flood...
conference paper 2013
document
Spekkers, M.H. (author), Kok, M. (author), Clemens, F.H.L.R. (author), Ten Veldhuis, J.A.E. (author)
In this paper, a database of water-related insurance damage claims related to private properties and content was analysed. The aim was to investigate whether the probability of occurrence of rainfall-related damage was associated with the intensity of rainfall. Rainfall data were used for the period of 2003–2009 in the Netherlands based on a...
journal article 2013
document
Van Riel, W.A.P. (author), Langeveld, J.G. (author), Herder, P.M. (author), Clemens, F.H.L.R. (author)
Sewer systems are capital-intensive infrastructures, requiring appropriate asset management to safeguard serviceability. In the Netherlands, effective sewer asset management is described by De Leeuw’s control paradigm. Reliable data and information are key elements in decision-making for rehabilitation and renewal of the assets. Rehabilitation...
conference paper 2012
document
Stanic, N. (author), Langeveld, J.G. (author), Clemens, F.H.L.R. (author)
Asset management is a prerequisite for maintaining the required level of serviceability of urban drainage systems. The required asset management effort to achieve a certain level of service is unclear due to sewer systems process and structure complexity. One of the main questions of asset management is what kind of information is needed, and...
conference paper 2012
document
Stanic, N. (author), Haan, C. (author), Tirion, M. (author), Langeveld, J.G. (author), Clemens, F.H.L.R. (author)
Sewer systems are costly to construct and even more costly to replace, requiring proper asset management Sewer asset management relies to a large extent on available information. In sewer systems where pipe corrosion is the dominant failure mechanism, visual inspection (CCTV) and core sampling are amongst the methods applied mostly to assess...
conference paper 2012
Searched for: faculty%3A%22Civil%255C%252BEngineering%255C%252Band%255C%252BGeosciences%22
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