The control of water leaks in water distribution networks represents a critical issue for all utilities involved in drinking water supply. This paper deals with the detection of water leaks by using vibration monitoring techniques. The long-term objective is the development of a system for the automatic early detection of burst leaks in service pipes. An experimental campaign was started in ord...

Filamentous fungi in drinking water can block water pipes, can cause organoleptic biodeterioration, and are a source of pathogens. There are increasing reports of the involvement of the organisms in biofilms. This present study describes a sampling device that can be inserted directly into pipes within water distribution systems, allowing biofilm formation in situ. Calcofluor White M2R staining...

Many stormwater modeling problems consider watersheds comprised of complex flow networks including surfaces, streets, pipes, and channels. Ideally, hydrologic methods would be used to model the accumulation of runoff on surfaces while hydraulic methods would be used to explicitly model the flow in each street, pipe, and channel. In many practical circumstances, however, only the largest pipes a...

An increasing prevalence of smoking in Jordan has been noted and this necessitates understanding the social behaviours that have lead to this habit. This cross-sectional, descriptive study determined the prevalence of smoking among Jordanians in relation to demographics with a focus on 4 types of tobacco products-cigarettes, waterpipes, cigars and pipes. A population sample of 3196 adults aged ...

To develop an effective preventive or proactive repair and replacement action plan, water utilities often rely on water main failure prediction models. However, in the prediction modeling water mains failure, uncertainty is inherent regardless of quality and quantity of data used in model-data fusion. To improve the understanding of water main failure processes, a new and effective Bayesian fra...

Pressurized pipe networks used for fresh-water distribution can take advantage of recent advances in sensing technologies and data-interpretation to evaluate their performance. In this paper, a leak-detection and a sensor placement methodology are proposed based on leak-scenario falsification. The approach includes modeling and measurement uncertainties during the leak detection process. The pe...

A detailed experimental study of sound propagation in liquids contained by pipes constructed of polymeric materials is discussed. Experiments were conducted with vertically aligned cylinders containing water ensonified at one end by a piston-driven sound source. Significant sound attenuation (as much as 60 dB} was observed in pipes made of flexible polymeric materials, the effect increasing wit...