03. How to correctly insert Valves, Reducers Or Other Components After Elbow Or After Tee in AutoPIP

Applies To
Version(s):2004, XM, V8i 
Area: Modeling
Original Author:Bentley Technical Support Group
Date Logged
& Current Version
Mar. 2015


How to correctly insert Valves, Reducers Or Other Components After Elbow Or After Tee in AutoPIPE?


A bend component is made up of 4 node points:

A. Near Point - automatically generated
B. Tagent Interface Point (TIP) - user generated
C. Far Point - automatically generated
D. Mid Point (if enabled) - user specified between Near and Far Point.

AutoPIPE does not allow users to insert the next node point or component between the Bend's Near and Far points. If done, the bend cannot be drawn and a error message (E732-3: Not enough clearance to fit bend xxx) will be mentioned in the Tools> Model Consistency check report.

Solution, the user must first enter a pipe run directly after an elbow whose length is just beyond the automatically generated Near OR Far points before adding the next piping component.

This means that there will be 2 points, a bend point and a run point, very close to one another. The should not be exactly in the same location, or another warning will be displayed about a zero length run (W726-6: Near zero length element at point XXX)

The same technique is used for inserting valves and other components directly after a tee, AutoPIPE requires that the user first input a run of pipe after the tee before inserting the component to model the leg / branch weld points of the tee.

AutoPPE will adjust the elbow's stiffness if it detects a flange or valve component within a defined distance from an elbow, see the next item below for more details: "Q4. When a flanged elbow is modeled in AutoPIPE, does it affect the stiffness of the elbow in the analysis? If so, how?"

See Also

Bentley AutoPIPE

External Links

Bentley Technical Support KnowledgeBase

Bentley LEARN Server

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