给排水工程设计至今已有一段相当长的历史,也取得了许多宝贵的经验。随着生产的发展,电子计算机技术的开发与普及,如何提高设计水平是值得我们很好研究的。作者认为目前的没计方法存在着两个缺点,即经验性和局限性。所谓经验性就是在设计中,所选用的设计控制参数以及计算方法很大程度上依赖于 The water supply and drainage engineering design has a long history and many valuable experiences have been obtained. With the development of production, the development and popularization of computer technology, how to improve the design level is worthy of our study. The author believes that there are two shortcomings in the current method of escaping, namely, experientiality and limitations. The so-called empiricism is that in the design, the selected design control parameters and calculation methods are largely dependent on