Pipe Connection represents a pipe with a circular cross section. The flow routing through a Pipe Connection is described in Analysis of Connections.
Parameters to specify:
Length, Slope, either Manning's n or Colebrook-White Roughness, Diameter/Base Width, see Connections Inputs.
Upstream (US) Cover Level, Upstream Invert Level, Downstream (DS) Cover Level and Downstream Invert Level.
Entering a value for Manning's n or Colebrook-White Roughness will clear the value of the other. Manning's n is used by default.
If the Slope or Downstream Invert Level are changed by the user the other variable will be updated to match the slope.
Where possible connection levels are automatically set from Surface Data data, existing Stormwater Controls - SWC and existing Junctions. This is done following the rules below but can be overruled by the user. Where levels have been overruled by the user or by the Pipe Sizing procedure the values will be shown in red to indicate they are no longer following the rules below and will not be automatically updated.
US Cover Level
DS Cover Level
US Invert Level
DS Invert Level
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