虹吸系统设计步骤Design steps of siphonic system
| 1 | 划分汇水区域，计算各区域的屋面面积 | 2 | 确定暴雨重现期，计算暴雨强度 |
| Divide watersheds, and calculate roof areas of various watersheds | Determine return period of rainstorm, and calculate intensity of rainstorm | ||
| 3 | 根据屋面面积，暴雨强度，计算雨水流量 | 4 | 布置雨水斗（按照荣成公司设计标准进行合理布置） |
| Calculate flow rate of rainwater in accordance with roof area and intensity of rainstorm | Arrange rainwater hoppers (in reasonable way according to design standards of Rongcheng Company) | ||
| 5 | 管道的布置（按照设计院的走向或是按照经验布置） | 6 | 绘制系统图 |
| Lay out pipelines (in accordance with trend defined by design institute or experiences) | Draw system diagrams | ||
| 7 | 方案审核确认 | 8 | 通过计算机专用软件进行管径校核 |
| Examine and confirm program | Verify pipe diameters via dedicated computer software | ||
| 9 | 系统完成 | ||
| Complete system |