4.17.1 限制性契约 ................................................................................................................ 12 4.17.2 规范和标准 ................................................................................................................ 12 4.17.3 系统布局 ................................................................................................................ 13 4.17.4 水力设计 ................................................................................................................ 14 4.17.5 设计流程 ................................................................................................................ 14 4.17.6 水力计算 ................................................................................................................ 17 4.17.7 管道 ............................................................................................................................. 17 4.17.8 清理人孔 ................................................................................................................ 18 4.17.9 空气阀 ............................................................................................................................. 18 4.17.10 排放位置 ................................................................................................................ 18 4.17.11 服务连接 ................................................................................................................ 18 4.17.12 私人泵单元一般要求...................................................................................................... 18 4.17.13 泵细节................................................................................................................... 19 4.17.14 泵室细节................................................................................................................... 20 4.17.15 管道细节................................................................................................................... 21 4.17.16 泵室通风................................................................................................................... 21 4.17.17 电气............................................................................................................................. 21 4.17.18 控件............................................................................................................................. 22 4.18 下水道系统抗震设计............................................................................................................. 23