The Engineered Design of Building Drainage Systems

The Engineered Design of Building Drainage Systems addresses the central problem of building drainage design, namely the unsteady nature of the flow within the drainage system following the random operation of system appliances. The flow within building drainage systems is identified as belonging to the general family of unsteady flow conditions: solution techniques are proposed, based upon the mathematical method of characteristics. Computing models based on these mathematical solutions and techniques are both formulated and fully validated for full-scale building drainage networks. The application of the computer model to the prediction of flow depths and flow rates at any point within a multi-storey network at any point in time during a simulation, is clearly presented. - - The text is seen as a necessary bridge between the practical application of drainage design and the theoretical fluid mechanics and mathematical basis of the unsteady flow conditions. It contains original material which illustrates techniques for the fully time-dependent prediction of flow conditions within complex drainage systems, covering both free-surface partially-filled waste water pipeflows and the entrained air flows found in vertical stacks and vent systems. The authors also give a clear indication of the relationship between the new technology presented and the methodologies for drainage design in current use. - - The readership includes both professional design engineers and also students of building services engineering who are interested in the applications of unsteady flow theory to building drainage systems. Researchers in the general area of drainage and vent system design would also find the mathematical models and the validated computer programs of direct application.