Abstract: Assessment of the reliability of a water distribution system through evaluation of all possible combinations of mechanical (pipe) failure is computationally intensive. It is nonpolynomial (NP) hard. An approach is proposed ...

Abstract: An approach to facilitate the development and verification of a geographic information system for managing a water‐distribution network data base is proposed. The approach, which was developed for use in reliability analysis ...

Abstract: The starting point to determine optimal well design and operation should be that which maximizes net present worth. Optimal design is important because it maximizes the potential of the well; however, optimal operation of ...

Abstract: A methodology for quantifying the variation in pipe failure rates associated with temporal and spatial clustering of water‐main failures is developed. In the first stage a cross‐referencing scheme is used to determine the ...

Abstract: The upper surface profile of a rectangular free overfall is modeled using the free-fall parabolic equation. Empirical and semiempirical relationships for the unknown quantities in this equation are presented. It was found ...

Abstract: This technical note describes an experimental study of the free overfall from a rectangular channel with differing slopes and bed roughnesses. The relationship between the upstream critical depth and brink depth is explored ...

Abstract: Recent studies on the behavior of the simple free-hanging configuration for flexible risers have shown that, for very deepwater levels, they are reaching their technical and economic limits. ...