【Daily Question】Utilities - Water Supply and Drainage - 20190121
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Which of the following statements regarding the hydraulic calculation of water supply networks is incorrect? () a. Similar to the layout planning of pipe networks, the hydraulic calculation of such networks is also limited to the main pipes; the actual network is simplified by retaining the main pipelines and omitting those that are secondary and have less impact on hydraulic conditions. However, the simplified network still manages to reflect the actual water usage patterns. b. Generally, the more a network is simplified, the less computational work is required. c. An overly simplified network will inevitably result in calculation outcomes that differ significantly from the actual water usage patterns. In large cities, it is not possible to omit certain pipe diameters, while in small towns this can be done to avoid deviations from the actual usage patterns. d. Simplifying the diagram of a pipe network serves to simplify its structure while ensuring that the calculation results remain close to the actual conditions. Answer: c
c. An overly simplified pipe network inevitably leads to greater discrepancies between the calculation results and the actual water usage patterns; for example, pipe diameters cannot be ignored in large cities, while this can be done in small towns in order to avoid deviations from the actual water usage