In Bentley OpenUtilities Designer, the Standard Data Model defines wastewater points as simple nodes in the network.

• Pipe Network Structures are features providing access and convergence of pipes at strategic network locations and facilitate changes in gradient. These are represented by Wastewater Manhole, Access Chamber, Metering Chamber and Junction Chamber features.
  • Manhole - Used for access to the underground pipe network for inspection and maintenance purposes, to vent noxious gases and provide additional storage during surcharge conditions. Manholes are also installed at changes in the gradient and direction of the pipeline, and at points in the network where multiple pipes converge.
  • Access Chamber - shallow depth chambers that provide simple access for cursory inspection and routine cleaning and maintenance that does not require entry by a maintenance operative.
  • Junction Chamber – This is a part of the sewer system where the flow from one or more sewers joins or converges into the main sewer where the main sewer bifurcates.
  • Metering Chamber - chambers that provide simple access to measure network flow.
• Flow Control Structures are features to alter network flow and debris entrapment.
  • Flume – Artificial constructions in a channel or pipe that leads water from dam or weir aside from the natural flow.
  • Orifice – Controls the discharge from a tank or pond and comprises a plate with a hole (usually circular) that allows flow to pass through in a controlled way.
  • Outfall – Network flow’s discharge point of treated effluent.
  • Screen – Used to trap debris in a sewer system, for example in a sediment trap, entrance to a treatment works or exit at an outfall/overflow.
  • Sluice – Channel that is controlled at its head typically by rectangular gate or penstock. Used to control the outflow from tanks or storage ponds. Refers to any gate that operates by allowing water to flow under it. When fully lowered flow can pass over the top and it then operates as a weir.
  • Weir – A passive flow control structure that alters the flow of water in a sewer without intervention. Weirs are commonly used in sewer systems at overflow relief pipes/channels allowing excessive flow at a prescribed depth to divert to an overflow device such as a tank or outfall.
  • Wetwell – A holding facility for gravity-flow where a set level is pumped to a forced main to a higher grade elevation.
• Wastewater valves (Wastewater Control Valve, Wastewater Isolation Valve and Wastewater Relief Valve) are features which control or limit network flow.
  • Control Valve – Used to control flow, pressure, level conditions in the sewer by moderating the opening and closing of the valve in response to conditions experienced elsewhere in the sewer network via signals received from controllers that compare the operating “set-point” to a variable measured by sensors installed in the sewer that monitor changes in the variable over time.
  • Isolation Valve – Valve to isolate area of the network. Either complexly open or completely closed so it not used to moderate flow.
  • Relief Valve – Valve used to control or limit the increase of pressure in a system or vessel caused by equipment failure.
• Wastewater Pump provides flow in the wastewater network where gravity fails to provide the necessary flow.
• Wastewater Lateral Connection Points are designed for connecting lateral lines to a wastewater pipe and can be placed anywhere along a wastewater pipe.
• Wastewater Fittings are connectors between two or more wastewater pipes, or indicate a connection on the pipe itself (e.g. welding, threading, heat fusion, sealing, mechanical or solvent coupling). The openness of the placement routines allows for fittings to be placed on pipes or, alternatively, pipes to be connected to fittings.
• Wastewater cleanouts (Pipe Cleanout and Lateral Cleanout) are capped vertical pipes connected to network pipes (Pipe, Lateral Pipe and Siphon) having a removable cap to provide restricted access for cleaning and maintenance.