摘要：通过对当前新建的典型普通多层住宅生活给水系统详细的水力计算，得出在设定的流速范围内管道和水表的口径及水头损失。从而得出为满足使用要求需要的室外干管水压，最后对涉及的有关问题进行了讨论。

关键词：住宅建筑 水力计算 水头损失

Hydraulic Calculation of Water Supply Line for Residential Building

　　Abstract: Minute hydraulic calculation was conducted for newly constructed multi-story residential buildings. The size and headlosses of the water supplying pipeline and meters under pre-decided flowrate were obtained and then the necessary pressure of outdoor water mains could be determined. Also some related problems were discussed.

0　概述
　　 规范GBJ15-88(简称规范)第2.6.3条规定：给水管的管径应根据设计秒流量、室外管网能保证的水压和最不利处的配水点所……