Sanitary - Manholes

Point feature displaying sanitary manholes. Manhole types include: cleanout, drop manhole, MH chamber, SAMP, vent manhole, and vertical bend. These are placed along sanitary mains allowing access to inspect and routinely clean pipes along the City's sanitary network. Updated as an ongoing process.展示市政污水检查井（sanitary manholes）的点要素（point feature）。检查井类型涵盖：清扫井（cleanout）、跌落井（drop manhole）、检查井室（MH chamber）、SAMP、通风井（vent manhole）以及垂直弯管检查井（vertical bend）。此类设施沿市政污水干管布设，可接入城市市政污水管网，用于开展管道巡检与日常清淤作业。本数据集将持续更新维护。