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03-r: Export Model to STAAD Using PipeLink (*.pipelink) command in AutoPIPE

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Comments, Questions, and Answers about exporting a file to STAAD using PipeLINK

Attention: Please see the following document installed with AutoPIPE: PIPELINK_tutorial.pdf

Item #0

How to export model from AutoPIPE to STAAD using Export> "Model to STADD using Pipelink (*.pipelink)" command?

Answer:

See WIKI here.

Item #1

Is the integration between AutoPIPE and STAAD.PRO software version dependent?

Answer:

Yes, it is version dependent to a degree. You must have installed AutoPIPE V8i 09.03.xx.xx and higher, in addition, you must have installed STAAD 2007 and higher as these are the version where the PIPELINK command was  first introduced. After that you can have any combinations of AutoPIPE to STAAD version as there is no feature requirements between the application versions. 

Item #2

Is there a limitation for exporting loads to STAAD using pipe link? if so how many?

Answer:

Yes there is a limitation, no more than 332 load case can be exported by AutoPIPE V8i 09.06.00.xx and lower. This was logged under CAE-TR-11136 and will be fixed in AutoPIPE V8i 09.06.01.xx and higher.

Note: AutoPIPE combinations are not exported to STAAD, because Structural load combinations are different to Piping load combinations including different factors applied to different types of loads so only the load cases are transferred.

Item #3

Can AutoPIPE export the beam structure to STAAD using pipelink?

Answer:

Please see the following AutoPIPE help section:
Help > Contents> Contents Tab> Command Reference> File Commands> Export> Model to STAAD Using PipeLink

As seen in the online help:

The following data will be exported:

    • PipeLink revision information
    • Model information
    • Piping Geometry as an ADI
    • Pipe Supports
    • Pipe Support Connections
    • Supports
    • Support Loads
    • Anchors
    • Anchor Loads

Only those items listed above are exported to STAAD. As such, BEAMS are not listed and thus are not exported to STAAD. However, structure created in STAAD are able to be imported into AutoPIPE.

Item #4

Will the exported piping model include weight and stiffness so we can do mode shape with structural model together in STAAD.Pro. 

Answer: 

Please see the the Item #3 answer above for exactly what is exported by AutoPIPE to STAAD.

AutoPIPE's Geometry and loads can be seen in STAAD. However, the piping geometry does not have pipe properties, it is just a graphical representation showing the piping layout. The STAAD structural model is only able to import the support reactions as loads from AutoPIPE. Subsequently one can do a frequency analysis in STAAD in which these imported loads can be considered as masses along with the structural masses. The stiffness of the pipe cannot be considered.

A better option would to be exporting the STAAD structure back to AutoPIPE for a complete dynamic analysis the considers both piping and structure. See following file for workflow scenarios:

C:\ Bentley\ AutoPIPE V8i SELECTseries\ Documents\ PIPELINK_tutorial.pdf

Item #5

It appears that the loads in AutoPIPE are not being exported to STAAD. Why?

Answer:

Remember that all loads from AutoPIPE are imported into STAAD as reference Loads

 

At which time they can then be reconfigured as regular loads in STAAD (see STAAD online help for details).

Item #6

When exporting a AutoPIPE model to STAAD the following screen appears and the "Close" button remains grayed out, why?

 

Answer:

For larger models in AutoPIPE it takes a period of time to export all the data to a *.PIPELINK file. See the following as an example of the data printed to this dialog. 

Only after the "Export to STAAD is completed..." line printed on the dialog (shown above) will the "Close" button be able to be pressed; closing this dialog and generating the *.PIPELINK file.

Using the Windows "X" in the upper right corner of the dialog, will cancel the command and the *.PIPELINK file will not be created. The Export> Model to STAAD command will have to be re-started, be patient and wait for the command to process the *.PIPELINK file.

On rare occasions, does the system fail to create a *.PIPELINK file given enough time. In such events, suggest the following approach,

Suggestion #1:

create a new model with the same general model options and use the Insert Model> AutoPIPE Model (*.dat) command to import the original model into a clean model. After the import is successful, be sure to review the Tools> Model listing report and Design Check report, making every effort to lower the number of occurrences to as few as possible. Continue to review the model to be sure all the load and settings are correct. Only after such review, then execute the "Export> Model to STAAD using PipeLINK" command again. This import process into a new model cleans the original database and flush out any problems that may have occurred in the original file. 

Suggestion #2:

If the AutoPIPE model has Beams modeled, try deleting all the beams from the entire model, run an analysis, and try to export to STAAD PIPELINK. If successful, problem is related to a beam. Check for supports that are connected to split beam (TFS-149785).

Item #7

When we are exporting the DAT file to pipelink file, we are not receiving the 'hydrotest' load combination in the pipelink load files. But in our older version we used to get the hydrotest loads.

Answer:

Running a test using AutoPIPE V8i 09.06.02.06 and 09.05.xx.xx, when creating a hydrotest in both versions the load case is created as a separate Analysis set (i.e. Analysis set #2), shown below:

When imported into STAAD it will show up as a 2nd gravity load case, as shown below:

The Gravity 2 load cases imported is essential the hydrostatic load on the structure. When set up correctly there will be a difference between these loads case Gravity and Gravity(2) in STAAD.

Item #8:

When exporting model to STAAD, the supports are not aligned as in AutoPIPE, why:

Why and how to resolve. 

Answer: 

We have discovered that the problem with the STAAD interop occurs when using numeric in AutoPIPE. The default node numbering is Alpha Numeric and when using this there is no problem with the mapping (TFS-D 666513).

Work around.

Using Tools – Model Options – Edit Options change the node numbering to Numeric first hit OK and then to Alpha Numeric hit OK.


 Item #9:

IF STAAD is Not installed on the computer, can AutoPIPE still export a file using PipeLink?

Answer:

Yes, Export to STAADD using PipeLink is a command in AutoPIPE. See below.

Again, STAAD does not need to be installed to create a PipeLink file from AutoPIPE


See Also

Import and Export - AutoPIPE

AutoPIPE to STAAD Pipelink Database Conversion

Bentley AutoPIPE


02. Is there a limitation for exporting loads to STAAD using pipe link? if so how many?

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Applies To
Product(s):AutoPIPE
Version(s):ALL;
Area: Export
Date Logged
& Current Version
April. 2018
11.03.00.08

Problem:

Is there a limitation for exporting loads to STAAD using pipe link? if so how many?

Solution:

Yes there is a limitation, no more than 332 load case can be exported by AutoPIPE V8i 09.06.00.xx and lower. This was logged under CAE-TR-11136 and will be fixed in AutoPIPE V8i 09.06.01.xx and higher.

Note: AutoPIPE combinations are not exported to STAAD, because Structural load combinations are different to Piping load combinations including different factors applied to different types of loads so only the load cases are transferred.

See Also

Export Model to STAAD Using PipeLink (*.pipelink)

Bentley AutoPIPE

03 Can AutoPIPE export the beam structure to STAAD using pipelink?

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Applies To
Product(s):AutoPIPE
Version(s):ALL;
Area: Export
Date Logged
& Current Version
April. 2018
11.03.00.08

Problem:

Can AutoPIPE export the beam structure to STAAD using pipelink?

Solution:

Please see the following AutoPIPE help section:
Help > Contents> Contents Tab> Command Reference> File Commands> Export> Model to STAAD Using PipeLink

As seen in the online help:

The following data will be exported:

- PipeLink revision information
- Model information
- Piping Geometry as an ADI
- Pipe Supports
- Pipe Support Connections
- Supports
- Support Loads
- Anchors
- Anchor Loads

Only those items listed above are exported to STAAD. As such, BEAMS are not listed and thus are not exported to STAAD. However, structure created in STAAD are able to be imported into AutoPIPE.

See Also

Export Model to STAAD Using PipeLink (*.pipelink)

Bentley AutoPIPE

04. Will the exported AutoPIPE information to STAAD include weight and stiffness, as to analyze both mode shapes at the same time?

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0
Applies To
Product(s):AutoPIPE
Version(s):ALL;
Area: Export
Date Logged
& Current Version
April. 2018
11.03.00.08

Problem:

Will the exported AutoPIPE information to STAAD include weight and stiffness, as to analyze both mode shapes at the same time? 

Solution:

Please see the the Item #3 answer above for exactly what is exported by AutoPIPE to STAAD.

AutoPIPE's Geometry and loads can be seen in STAAD. However, the piping geometry does not have pipe properties, it is just a graphical representation showing the piping layout. The STAAD structural model is only able to import the support reactions as loads from AutoPIPE. Subsequently one can do a frequency analysis in STAAD in which these imported loads can be considered as masses along with the structural masses. The stiffness of the pipe cannot be considered.

A better option would to be exporting the STAAD structure back to AutoPIPE for a complete dynamic analysis the considers both piping and structure. See following file for workflow scenarios:

C:\ Bentley\ AutoPIPE V8i SELECTseries\ Documents\ PIPELINK_tutorial.pdf

See Also

Export Model to STAAD Using PipeLink (*.pipelink)

Bentley AutoPIPE

05. No load information was exported from AutoPIPE to STAAD. Why?

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0
Applies To
Product(s):AutoPIPE
Version(s):ALL;
Area: Export
Date Logged
& Current Version
April. 2018
11.03.00.08

Problem:

It appears that the loads in AutoPIPE are not being exported to STAAD. Why?

Solution:

Remember that all loads from AutoPIPE are imported into STAAD as reference Loads

 

At which time they can then be reconfigured as regular loads in STAAD (see STAAD online help for details).

See Also

Export Model to STAAD Using PipeLink (*.pipelink)

Bentley AutoPIPE

06. When exporting a AutoPIPE model to STAAD the following screen appears and the "Close" button remains grayed out, why?

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0
Applies To
Product(s):AutoPIPE
Version(s):ALL;
Area: Export
Date Logged
& Current Version
April. 2018
11.03.00.08

Problem:

When exporting a AutoPIPE model to STAAD the following screen appears and the "Close" button remains grayed out, why?

--------------------------------
Log Message

--------------------------------

Revision history exported successfully

Model data exported successfully

--------------------------------
Close
--------------------------------

Solution:

For larger models in AutoPIPE it takes a period of time to export all the data to a *.PIPELINK file. See the following as an example of the data printed to this dialog. 

Only after the "Export to STAAD is completed..." line printed on the dialog (shown above) will the "Close" button be able to be pressed; closing this dialog and generating the *.PIPELINK file.

Using the Windows "X" in the upper right corner of the dialog, will cancel the command and the *.PIPELINK file will not be created. The Export> Model to STAAD command will have to be re-started, be patient and wait for the command to process the *.PIPELINK file.

On rare occasions, does the system fail to create a *.PIPELINK file given enough time. In such events, suggest the following approach,

Suggestion #1:

create a new model with the same general model options and use the Insert Model> AutoPIPE Model (*.dat) command to import the original model into a clean model. After the import is successful, be sure to review the Tools> Model listing report and Design Check report, making every effort to lower the number of occurrences to as few as possible. Continue to review the model to be sure all the load and settings are correct. Only after such review, then execute the "Export> Model to STAAD using PipeLINK" command again. This import process into a new model cleans the original database and flush out any problems that may have occurred in the original file. 

Suggestion #2:

If the AutoPIPE model has Beams modeled, try deleting all the beams from the entire model, run an analysis, and try to export to STAAD PIPELINK. If successful, problem is related to a beam. Check for supports that are connected to split beam (TFS-149785).

See Also

Export Model to STAAD Using PipeLink (*.pipelink)

Bentley AutoPIPE

ASME B31.8 Offshore - Hoop Stress Calculation - Thin / THick Wall Theory

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Hi all

I am having issues with the code compliance hoop stress check for ASME B31.8 Offshore using Autopipe (Series 5, Ver 09.06.00.15).  As per the code and as recognised in the help files, Eqn.2 should be used for D/t >= 30 and Eqn. 4 for D/t < 30.

In short, my D/t = 26.6, however Autopipe appears to be using Eqn 2.  Can anyone advise if the appropriate theory is automatically selected or if there is manual switch which I haven't found?

The hoop stress calculation in itself is of secondary importance.  The key issue is that this incorrect hoop stress is affecting the combined stress check.

Further Details

Hoop Stress

Input:  OD = 508mm, WT = 19.1mm, P = 20MPa

Autopipe Output = 265.97 MPa

My Calculations:  Eqn 2 = 265.96 MPa, Eqn 4 = 255.97 MPa (yes I know this exceeds the code allowable, this is a made up example)

Combined Stress (Edit:  I've since realised Autopipe inlcudes the Von Mises as well as Tresca combined stress)

Sa + Sb = 197.3 MPa

Sa - Sb = 39.0 MPa (worst case)

St = 0 MPa

Combined Stress Using Eqn 2 = 226.9 MPa (Tresca)

Combined Stress Using Eqn 4 = 216.9 MPa (Tresca)

03-a: Export AutoPIPE Batch (NTL)

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02-03.j: Insert> Model From STAAD Using PipeLink

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02-03.h: Import ProStructures into AutoPIPE

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Applies To
Product(s):AutoPIPE
Version(s):All
Area: Import
Original Author:Bentley Technical Support Group

Problem:

How to Import ProStructures into AutoPIPE?

Solution:

Please see the following web site to export a model from ProStructures to ISM then to STAAD.Pro:

http://communities.bentley.com/products/structural/w/structural__wiki/modeling-and-node-generation-best-practices.aspx

Then see refer to PIPELINK_tutorial.pdf  for detailed information about importing:

Location of file:

1. AutoPIPE help Supplemental Documentation

2. AutoPIPE example folder

C:\ Bentley\ AutoPIPE V8i SELECTseries \ Examples\ PIPELINK_tutorial.pdf

Additional Comments:

Instructions on flipping the Auto / Open Plant model to match ISM are copied below. Note the transform switch was added to APIPE V9.6.x.x SS5.

  

See Also

Import and Export

Bentley AutoPIPE

02-03.g: Import PlantSPACE model into AutoPIPE

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Applies To
Product(s):AutoPIPE,
Version(s):All
Area: Import
Original Author:Bentley Technical Support Group

Problem:

What options are available to import PlantSPACE data into AutoPIPE?

Solution:

 Choose one or more of the following for more information:

1. Import PlantSpace Piping data (PSDS) into AutoPIPE

2. Use PSDS Support Modeler to place supports

3. Workflow: PlantSpace to AutoPIPE and STAAD integration

4. When Exporting a model from PlantSPACE Stress Interface an message about making sure tables exist is displayed before creating the AutoPIPE NTL file.

 

See Also

Import and Export

Bentley AutoPIPE

03. Workflow: PlantSpace to AutoPIPE and STAAD integration

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Applies To
Product(s):AutoPIPE,
Version(s):2004, XM, & V8i
Area: Import
Original Author:Bentley Technical Support Group

The following is a suggested workflow to intergrate PlantSPACE model with Bentley AutoPIPE and STAAD.  

1. Create models in PlantSPACE.

2. Import PlantSPACE piping model to AutoPIPE

3. Import STAAD model to AutoPIPE  (Structural model only).

Note: Models can also be imported from Bentley Structural into STAAD.

4. Export final piping loads to STAAD

5. Updated STAAD structural model

6. Export model via PipeLINK back into AutoPIPE

7. Piping model connected to final STAAD model in AutoPIPE.

8. Export model for clash detection.

9. Updated models as needed, until final design.

 

See Also

Bentley AutoPIPE

03-q: Export AutoPIPE Model (DAT) to I-model file format

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Applies To
Product(s):AutoPIPE
Version(s):All
Area: Export
Original Author:Bentley Technical Support Group

Problem:

How to export an AutoPIPE model into an I-model file format?

Solution:

There is no file format that can be directly export from AutoPIPE  to I-model. However there is a workaround:

instructions for AutoPIPE V8i 09.05.xx.xx and higher:

1. With the model opened in AutoPIPE, select File> Export> DGN model (DGN). 

2. When the dialog screen appears, save the file name to a folder location, check all applicable boxes, press OK button to continue

3. With Bentley I-model composer installed on your system, follow the programs instructions to open a DGN file and convert it to a I-model.

See Also

Import and Export - AutoPIPE

Axis orientation when exporting an I-model from AutoPIPE to Bentley Navigator for Hot Clash detection

Bentley AutoPIPE

Import and Export - AutoPIPE

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Comments, Questions, and Answers on Importing / Exporting with AutoPIPE

Item #1, Question: 

1. What file formats can AutoPIPE Import/Export?

2. Is there any information on AutoPIPE Translators?

Item #2, Import Issues:

1. AutoPIPE Files:

a. Import AutoPIPE (DAT) model

b. Import *.NTL file into AutoPIPE

2. AutoPIPE Translators:

a. ADL PIPE Translator

Import ADLPIPE file into AutoPIPE 

b. PCF Translator

Import Autodesk Inventor,  CADWorx, Solidworks, Catia, or Medusa files into AutoPIPE 

c. Strait Translator

Import PDS files into AutoPIPE

3. Other Formats

a. After import, how to fix piping that are not all connected? 

->Example #1

->Example #2

b. AutoCAD DWG / DXF or MS Excel (*.xls)

c. AutoDesk REVITmep

d. Bentley AutoPlant / OpenPLANT (PXF)

->PXF Import : CADAP.MAP Options

e. Bentley HAMMER

f. Bentley Microstation

g. Bentley PlantSPACE (PSDS)

h. Bentley ProStructures

i. Bentley Sacs

j. Bentley STAAD Using PipeLink

k. CAD (general) To Stress Integration

l. Caesar (cii)

m. CAEPipe or Kpipe

n. PipeNet

o. PDMS (Plant Design Management System) using I-Sketch, I-Run or Spoolgen

-> PDMS using I-Sketch, I-Run or Spoolgen

-> PDMS using cii file format

p. PTC Creo

q. SAP 2000 model file

r. TRIMBLE PIPEDESIGNER 3D

Item #3 Export Issues:

a. Export AutoPIPE Batch (NTL)

b. Interface between Projectwise and AutoPIPE

c. AutoPLANT (PXF) - Geometry/Results

d. AutoCAD (DXF)

e. Caesar II neutral (*.cii)

f. PDMS Compatible XML (*.xml)

g. Isogen (*.pcf)

h. JSpace Model (*.jsm)

i. DGN Model (*.dgn)

j. Imodel(*.imodel)

->Axis orientation when exporting an I-mode

->Do I have to use I-model when exporting a DGN File from AutoPIPE for clash detection

k. LiCAD (*.Apxt)

l. Input Database (*.mdb)

m. Results Database (*.mdb)

n. SACS SQLite Database (*.db) Technology Preview

o. SQLite Database (*.db) Technology Preview

p. Nozzle Loads to AutoPIPE Nozzle (*.pxf)

q. Nozzle Loads to AutoPIPE Vessel (*.xml)

r. Model to STAAD Using PipeLink (*.pipelink)

s. Model to STADD using SQLite Pipelink (*.pipelink)

t. MS Excel

See Also

Bentley AutoPIPE

02-01.b: Import *.NTL file into AutoPIPE

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Import / Export with AutoPIPE Vessel

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0

Import and Export issues in PULS

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Applies To
Product(s):PULS
Version(s):XM
Area: Import and Export
Original Author:Bentley Technical Support Group

Item #1:

Could you please explain us how the number of nodes is counted in the program?! 

Answer:

Please see the following conversion from AutoPIPE to PULS.

Valve: AutoPIPE = 3, Puls =2  
Bend: AutoPIPE = 3, Puls =1
Tee: AutoPIPE = 2, Puls =3

When importing AutoPIPE models into PULS, support nodes are removed to allow import of larger models. Maximum number of nodes supported in PULS is limited to 1000 for PULS Option 3 and 400 for other versions.

Item 2:

The following is displayed when exporting shaking forces:

 ---------------------------
Error
---------------------------
Failed to export the shaking force file: Overflow
---------------------------
OK  
---------------------------

Answer:

During the creation of the HMF file using File> Export> Shaking Forces, for some models the program may crash if the Analyze> Force direction command shows the AutoPIPE axes to be zero vectors.  

A new enhancement (CAE-CR-7856) has been added to a check for zero cosines when using File> Export forces.

It is unknown what causes 0 direction cosines in some models.

Workaround,  if direction cosines are zeroes, set them to unit vectors by using "Edit> Shaking Forces".

 Item #3: 

The following is displayed when importing a model from AutoPIPE:

length does not appear to be correct

Failed to open file

does not belong in the set of nodes

What is the problem and how to avoid / fit?

Answer:

Open AutoPIPE model, select Tools> Model Consistency check.

A report will be generated and displayed on screen. Any and all warnings related to piping geometry must be fixed before exporting to PULS. 

Example:

Therefore, all reducer issues in this example model must be fixed before exporting the file to PULS.

The goal is to fixed / reduce the number of warnings in AutoPIPE until the following is displayed when running this command:

See Also

Bentley PULS

Bentley AutoPIPE

A. Piping model with gaps and friction does not converge after 5 iteration, should it continue to iterate or not in AutoPIPE?

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Applies To
Product(s):AutoPIPE
Version(s):ALL;
Area: Analysis
Original Author:Bentley Technical Support Group
Date Logged
& Current Version
Sept. 2016
10.01.00.09

Problem:

When analyzing a model the following occurs:

---------------------------
Confirm
---------------------------
The load case did not converge. Do you wish to continue iterating?
---------------------------
Yes   No   Cancel  
---------------------------

Should it continue to iterate, or not?

Solution:

Yes, generally the default number of nonlinear iterations = 5 (in version 6.0 or earlier) is adequate for most models but for models with large gaps and friction it is not uncommon for convergence to occur after 20-30 iterations particularly with the thermal, wind and earthquake cases being analyzed in one model.

If the analysis did not converge within the specified number of iterations, a confirmation dialog will be displayed requesting whether or not to continue iterating. A "yes" selection will allow the user to specify an additional number of iterations to perform. A "no" selection will display another confirmation dialog requesting whether or not to display the error log file (*.LOG). Press OK to close the &rsquoEquivalent Linear Analysis’ dialog.

If at least one load case converged, the analysis results may be examined using the options found in the Result menu regardless if other load cases did not converged successfully. In the case in which the analysis did not converge, an error message will be displayed after selecting any Result menu option (except Filter Criteria) indicating that the analysis did not converge. In addition, a double asterisks is printed before the combination names in the Code Compliance Combinations listing and Other User Combinations listing in the Load summary sub-report indicate that the analysis results for those marked combinations did not converge.

See WIKI for additional information: 

What to do when "load case did not converge"

Product: AutoPIPE
Version: xx.xx.xx.xx
Area: GENERAL INFORMATION
Problem ID#: 28297

solution 500000055309

See FAQ 11.

See Also

What to do when "load case did not converge"

Bentley AutoPIPE

01. What to do when "load case did not converge" message appears in AutoPIPE?

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0
Applies To
Product(s):AutoPIPE
Version(s):ALL;
Area: Analysis
Original Author:Bentley Technical Support Group
Date Logged
& Current Version
Sept. 2016
10.01.00.09

Problem:

When analyzing a model the following occurs:

---------------------------
Confirm
---------------------------
The load case did not converge. Do you wish to continue iterating?
---------------------------
Yes   No   Cancel  
---------------------------

What can be done to avoid this message from appearing?

Solution:

Please see the following AutoPIPE help location.

Help > Contents> Contents Tab> Reference Information> Analysis Considerations> Static Analysis> Nonlinear Analysis - Gaps, Friction and Soil Yielding Included > Failure to Converge.

A nonlinear analysis will usually converge quite rapidly. However, some analyses may fail to converge, even if extra iterations are allowed. Failure to converge after »15 iterations will usually indicate that the system is unusually sensitive, suggesting that the supports ought to be modified.

If the analysis does not converge after a reasonable number of iterations, the QUIT option, which cancels the analysis, should usually be chosen. If the accept option is chosen, the results should be examined carefully to ensure that they are acceptable. During a nonlinear analysis, an ASCII text file SYSNAME.LOG is created, where SYSNAME is the piping system name (specified on the System dialog). This file can be used to identify the support(s) which failed to converge.

Open the SYSNAME.LOG file that was created, and scroll down to "ERROR SUMMARY FOR NONLINEAR SUPPORTS". Just above this line, see detailed information: Load case causing the problem, values calculated (compare to tolerance settings), node point where the non-convergence occurred, etc.

There are 5 solutions offered. In addition, consider reviewing how the model is moving under the offending load case. Sometimes support gaps need to be decreased / increased. In other cases, additional supports are needed in key locations around the model to prevent the movement to cause a model to not converge. Or a combinations of all 5 solutions is needed to resolve the issue.

Typical Solutions:

#1. Press Yes to continue iterating

a: Model does not converge after 5 iteration, should it continue to iterate or not?

b. How to change number of iterations for static analysis?

#2. Judging by the location and type of error, modify/remove the support.

a. Read the *.LOG file? 

b. Make sure there are no unrealistic huge loads in the load cases that are not converging

b. Piping model with Wave does not converge

c. For submerged piping, may need to add concentrated or distributed weight to prevent it from uplifting (in practice concrete mats are added in some cases.

d. For submerged piping on seabed, model using V-Stops instead of soil at a reasonable spacing (that will make it pass the sustained stress check). Also, may have to use large friction factors (0.5 to 1.0) for these supports. 

e. For submerged piping on seabed, review soil properties with very small K2 value, and with a huge concrete mattress load acting on the pipe in the downward direction. Making these values slightly more realistic seems to have resolved the issue.

#3. Model with soil; modify soil properties and/or modify the "Max. Soil Spacing" setting.

a. Confirm soil spacing is reasonable, Use AutoPIPE's help calculations as a guideline to this value.  

b. " Some more converging solutions for buried piping are to first try using nonzero K2 values in order to avoid unlimited displacements. Using larger K2 values temporarily (K2=K1/1000 or so) can help you see if P1 values are sufficient by checking displacements. By setting K1, K2, P1 to 0.01 N/m and 0.001 M/mm/mm, the model should converge with no problem.

c. Look at the displacement plot for the non-converging load case. If there are spot huge displacement values, that may point towards an unrealistic stiffness of support at that location, or soil yielding at a certain location

d. Crank up the soil stiffness values, including the K2 values. Huge displacements at locations which is solely supported by soil may indicate soil yielding under that load case. With a very low K2 value, the point would continue to displace even with a very small amount of force.

e. Piping model with beams and soil does not converge

f. Piping model with underwater piping resting on the seabed does not converge

#4. Reset the static analysis to uncheck "Gaps/Friction/Soils", run the analysis, and look at the support reactions for abnormal large values that are fighting each other.

#5. Modify non-linear analysis tolerance settings (i.e. Displacement Tolerance, Force Tolerance, Friction Tolerance (ratio), or Friction Scale Factor).

See Also

The load case did not converge...

Bentley AutoPIPE

07. CONNECT, CLOUD, and Go To CONNECTION Center issues with AutoPIPE:

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  1. CONNECTION Center Overview

  2. Bentley Cloud Services Overview

  3. Bentley Cloud and Web Services Support Solutions

  4. When selecting Go To CONNECTION Center / Portal get a blank screen, why?

  5. Problems with Bentley CONNECTION, Please log a Bentley Service Request, Queue = QTSGCONNECT. Also, for login issues, please refer to the following forum post here to ensure that the latest CONNECTION Client is installed.

  6. Connected User Initiative - all users to register: click here.

      Effective November 2017, all Bentley users must be registered to access Bentley applications or cloud services from a specific device. 
    1. If problem select "Need Help - Contact Us" on link above.
    2. Bentley On-site Admin and Co-Admin can run the following report on the SELECT Server portal

      Home >> Reports >> Inventory Reports >> Client Authentication by Site 

      This will show which computers / user that have been registered and those who have not. 
  7. Can AutoPIPE be installed on computer with Cetrix Server?

Note:User have the ability to turn off Connection Client: from with In AutoPIPE CONNECT v10.0 - 10.1, on the top tool bar select the button that has a name and a picture of a person, on this button Select Sign OUT. The project selection will appear when Bentley Connection is SIGNed In.

See Also

Licensing - AutoPIPE

Bentley AutoPIPE

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