MODIFIED PIPE NETWORK MODEL FOR INCORPORATING PEAK-DEMAND REQUIREMENTS

In some states the design of branched pipes in rural water systems mus t be carried out based on pressure drops calculated using expected ins tantaneous peak flows. These instantaneous peak flows are based on the number of users served by the pipe link, and field measurements have led to various tables of recommended values. Hydraulic calculations us ing instantaneous peak flows require a special approach. This approach , which can be incorporated into a pipe network hydraulic model, is de scribed. An example illustrates the significant differences possible i n a hydraulic analysis using a conventional approach based on a peak p er-capita demand and a modified one based on satisfying instantaneous peak flow requirements.