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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
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Spekkers, M.H. (author), Clemens, F.H.L.R. (author), ten Veldhuis, Marie-claire (author)The objective of this study was to identify the main failure mechanisms behind water-related building damage and to investigate to what extent these processes are related to characteristics of buildings and rainfall events. Results are based on the mining of property level insurance damage data, for a case study in Rotterdam, the Netherlands....conference paper 2014
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- 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
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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
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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
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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
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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
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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
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- van Daal-Rombouts, P.M.M. (author), Langeveld, J.G. (author), Clemens, F.H.L.R. (author) conference paper 2013
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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 high numbers of damage claims were associated with high rainfall intensities. Rainfall data were used for the period of 2003–2010 in the Netherlands based on a network of 33 automatic rain...journal article 2012
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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
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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
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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
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Pothof, I.W.M. (author), Clemens, F.H.L.R. (author)Air-water flow is an undesired condition in water pipelines and hydropower tunnels. Water pipelines and wastewater pressure mains in particular are subject to air pocket accumulation in downward sloping reaches, such as inverted siphons or terrain slopes. Air pockets cause energy losses and an associated capacity reduction. Despite its practical...conference paper 2012
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Rombouts, P.M.M. (author), Clemens, F.H.L.R. (author), Ten Veldhuis, J.A.E. (author), Pothof, I.W.M. (author), Langeveld, J.G. (author)Van 3 tot en met 7 september 2012 is de negende Urban Drainage Modelling conferentie gehouden in Belgrado, de hoofdstad van Seme. Hieronder volgt een verslag van de indrukken die zijn opgedaan in Servië en de belangrijkste, wetenschappelijke ontwikkelingen die aan de orde zijn gekomen. Het congres had een vol wetenschappelijk programma, mede...journal article 2012
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Stanic, N. (author), Langeveld, J.G. (author), Clemens, F.H.L.R. (author)Rioleringsbeheer is een eerste vereiste om het gewenste niveau van functioneren van de riolering te behouden. Welke inspanning op het gebied van rioleringsbeheer nodig is om een bepaald niveau van functioneren te bereiken is onduidelijk, omdat zowel de processen in als de structuur van de rioolstelsels complex zijn. Een belangrijke vraag hierbij...journal article 2012
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Nienhuis, J. (author), De Haan, C. (author), Langeveld, J.G. (author), Klootwijk, M. (author), Clemens, F.H.L.R. (author)Distributed Temperature Sensing (DTS) with fiber-optic cables is a powerful tool to detect illicit connections in storm sewer systems. High frequency temperature measurements along the in-sewer cable create a detailed representation of temperature anomalies due to illicit discharges. The detection limits of the monitoring equipment itself are...conference paper 2012