An overflow (Streichwehr/Leaping weir) is a component in relief structures and channels for diverting wastewater in different directions. A maximum amount of water flows to the wastewater treatment plant, while excess water (e.g., during heavy rain) is diverted via a sill/weir into a receiving water body. A Streichwehr is an overflow with a weir built parallel to the flow direction; a Leaping weir has a bottom opening. This object is recorded as a point object (Device > Overflow) to ensure topological connections for hydraulic calculations. Using this asset type as a StationEquipmentLine also allows recording the precise position, length, and orientation as a lineobject.

Linear structural components ina shaft or structure that are not hydraulically relevant and are not considered in the hydraulic calculation (e.g., step, berm, gutter, heat exchanger).

Dry weather downpipe or swanneck downpipe in a drop shaft, for diverting inflow in dry weather and light rain (source: VSA). A vertical pipe at the junction of a sewer and a shaft. The pipe allows for better and more controlled water conveyance in dry weather. Although assigned to the shaft in terms of content, it is hydraulically considered a component of the sewer/line. Its upper elevation is defined as the inlet height into the shaft for correct hydraulic consideration. This asset type allows for capturing the linear vertical geometry of the downpipe for 3D visualization. For hydraulic calculation, capturing the geometry is not mandatory, and the downpipe can then be recorded as a non-spatial object "DownpipeEdge".

NarrowingFlowChannel(AssetTypeCode: 855) is a structural modification of a sewer line (SewerInstallationEquipmentLine,AssetGroupCode: 850) designed to increase the flow velocity of wastewater during dry weather. This is achieved by reducing the cross-sectional area of the channel.