Pressure Junction vs Transition vs Manhole

  Product(s): SewerGEMS, SewerCAD, StormCAD,  CivilStorm
  Version(s): CONNECT Edition, V8i
  Environment: N\A
  Area: Modeling

 

Problem

What are the differences between the pressure junction, transition and manhole elements?

When should I use the element type transition node versus a manhole with the structure type set to transition node?

Solution

The most appropriate element type depends on what it will be used to simulate. The following lists differences between the elements Transition and Manhole (Structure Type: Transition Node).

 

 

Pressure Junction

Transition

Manhole

Has a structure that extends vertically?

No

Yes, if "Set Top to Ground Elevation?" is set to False.

Yes

Can surcharge and pressurize?

Yes

Yes

Yes, if "bolted cover" option is set to True.

Can have inflow?

Yes

No

Yes

Can overflow into surface storage?

No

No

Yes, if "bolted cover" option is set to False.

Can have cross-sections as upstream and downstream node elements if connected by a channel/

No, can't connect to channels.

No, can't connect to channels.

Yes

 

The following picture shows an example of a Transition element between circular pipes:

 

The following picture shows an example of the use of a transition element between prismatic channel conduits:

See Also

Help Article: Connecting Elements

Help Article: Connectivity Rules for Storm and Sanitary Models

  Original Author: Craig Calvin
Anonymous
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