Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Environment: N/A Area: Subarea: Original Author: Bentley Technical Support Group Problem: Does the flange analysis in AutoPIPE determine expected leakage rates? Answer: Flange analysis calculations does not calculate a leakage rate, just that if the results are lower than the allowable that the likelihood of a leakage at the flange is probable. See the online help for A. "ANSI Flange Loading Calculations" The flange loading check essentially involves determining the effective pressure in the flange due to operating pressure and external moment and force loads, and comparing it with the allowable pressure in the Table 2 of the ANSI B16.5 and 16.47. If the effective pressure is greater than the allowable pressure, then the flange is operating beyond its rated capacity. When the effective pressure is greater than the allowable pressure, the program will automatically increase the pressure rating to the next highest and perform the flange loading check again. This procedure is repeated until either the effective pressure is less than the allowable pressure, or the highest pressure rating is reached. B. "ASME Section VIII, Rigidity Criterion" Flanges that have been designed on allowable stress limits alone may not be sufficiently rigid to control leakage. See Also Bentley AutoPIPE External Links Bentley Technical Support KnowledgeBase Bentley LEARN Server Comments or Corrections? Bentley's Technical Support Group requests that you please submit any comments you have on this Wiki article to the "Comments" area below. THANK YOU!
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Wiki Page: 04. Does the flange analysis in AutoPIPE determine expected leakage rates?
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Wiki Page: Reports - AutoPIPE
Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Environment: N/A Area: reports Subarea: Original Author: Bentley Technical Support Group Comments, Questions, and Answers on AutoPIPE output reports: Item #1. Results Interpretation Be sure to review AutoPIPE's online help: Help > Contents> Contents Tab> Reference Information> Results Interpretation> This appendix explains how to interpret AutoPIPE's output report results. The coordinate systems used for the results presentation are particularly important, and are listed first. The output sign conventions for the different result types are then described. - Coordinate Systems - Total vs. Incremental Loading - Pipe Displacements - Pipe Forces and Moments: Global Option - Anchor Forces - Support Forces: Hangers and V-stops - Support Deformations: Hangers and V-stops without Gaps - V-stops with Gaps and Friction - Hangers and V-Stops with Imposed Displacement - Two-Point Hangers and V-Stops - Straight Pipe Forces and Moments: Local Option - Support Forces for Guides and Line Stops without Gaps - Support Forces: Guides & Line Stops with Gaps & Friction - Two-Point Guides and Line Stops - Curved Pipe Forces and Moments: Local Option - Support Forces for Skewed Supports - Support Forces for Tie/Link Restraints - Beam Member Forces - Dynamic Support Forces Item #2. Analysis Sub-reports See the following hyperlinks for issue on the respective Analysis Output sub report: Command: Analyze model> Results> Output Report: - Displacement - Support - Restraint - Forces & Moments - Code Compliance - Stress Summary - Frequency - Mode shapes - Equipment - Soil - Bend Angular Distortion - Stress Indices - Tee Plastic Strain - Beam forces - General stress - Preliminary Stress - Accelerations - Flange Summary - Model listing - Analysis summary - Steam Relief - Reference Loads - Fatigue - Result summary - Flange Analysis sub-report Item #3 Component Data Listing: See the following hyperlink for issues on the respective Component Data listing (aka Model Input Listing) report:Command: Tools> Model Input listing. - Extended Component (Point in v6.1) - Coordinates (Component in v6.1) - Pipe Properties - Material Properties - Material Allowables - Temperature & Pressure - Beam - Forces & Displacements - Thermal Anchor Movements - Seismic Anchor Movements - Center of Gravity - Load Case Description - Earthquake Scale Factors - Design Temp and Press - Soil Properties - Load Summary - Support - Bend - Tee - Valve - Flange - User SIF - Reducer - Rigid Pipe - Reference Points - Gross Discontinuity Stress - Segments Data Item #4: Can AutoPIPE print the Output reports to MS Excel, *.csv, or MS Word? Answer : We apologize for the inconvenience, however AutoPIPE cannot print its reports directly to MS word or MS Excel. Reports are currently written to the following files: *.OUT, *.HGR, *.RPT. These file can be opened by any text editor (i.e. NotePad, Ms WORD, ect..) . Also, AutoPIPE can export both the Input gids and Results grids to a database file (*.MDB), for manipulation into customized reports. This enhancement has been logged under CAE-CR-345: Add option to generate reports as EXCEL & WORD files. Items #5: Results are 0.00 or blank, Why? AutoPIPE Results Grids or Output Reports are found to be Zero (0.00) or Blank Item #6: What is +/- mean? What is the meaning of + and - (+/-) Node points in AutoPIPE results? Answer: Please see the following AutoPIPE help section: Help > Contents> Contents Tab> Reference Information> Results Interpretation> Pipe Forces and Moments: Global Option Item #7: Selected node points in output report Can we select a number of specific node points, pipe supports, etc. to report in the AutoPIPE result print out? Answer: Using any of the various method of selection, select the node points, supports, bends, etc. that are to be printed in the output report. After the selection process has been completed, perform a Model analysis as needed, and then selected Tools> Results> command. On the Batch report dialog screen, enable the first option " Limit results to highlighted points ", from the online help: Use this option to limit the reported results to only points which are currently selected and thus highlighted on the screen. Note: see the online help for complete details on this command. Continue checking any additional feature on the dialog as necessary, and press the OK button. The output will display only those selected points in the respective sub-reports selected. Item #8: How to customize output report: Can the output report or results grids be customized to export the information the way we want it? Answer: As mentioned in the online help, the Results> Output report command permits the user to specify the level of detail included on reports generated on the current model. The report can be limited to selected (highlighted) points or criteria specified in the Result> Filter options. In addition, the report will be generated in consideration of the current load combinations and the modal range. These printed reports have *.RPT / *.OUT file extension and can be opened by any text editing software for further manipulation. In addition, using Results> Grids command will provide a window consisting of tabs with tabulated data that are easy to highlight (i.e select the top, most left cell in the grid to highlight the entire grid) and copy into other applications like MS Excel or Ms Word for further manipulation. Furthermore, AutoPIPE's File > Export> Input Database or Results Database, will export information to a MS Access database (*.MDB) file. One limitation, not all of the sub-reports will be available in these exported files (i.e. General Stress reports, etc..). If a report is found to be missing a sub-section that you would like exported to an MDB file, please log a Service Request asking for a new enhancement to be logged on your behave. Once the *.MDB file has been created, it can be opened in MS Access or any other software that can read such a file format, where more powerful manipulations tools can be applied thus creating customized reports as needed. Item #9: %error allowed in the program? What is the accuracy rating for results in AutoPIPE compared to hand calculated values? Answer: Bentley AutoPIPE's accuracy has always been and will continue to be no more than 2.5% error. As mentioned in our ATS documentation: "The numerical results of the AutoPIPE Acceptance Test Set shall be within the acceptance criteria of nominally 2%, unless otherwise noted. Numerical results generated by other editions, or run under differing operating environments, are also expected to be within the same acceptance criteria (nominally 2%, unless otherwise noted). Therefore, edition specific output comparison files will not be provided." See Also Bentley AutoPIPE External Links Bentley Technical Support KnowledgeBase Bentley LEARN Server Comments or Corrections? Bentley's Technical Support Group requests that you please submit any comments you have on this Wiki article to the "Comments" area below. THANK YOU!
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Wiki Page: 01. What does "Inside diameter of flange should be equal to inside pipe/nozzle diameter" mean in the Flange Analysis Output report??
Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Environment: N/A Area: Analysis Subarea: Original Author: Bentley Technical Support Group Problem: The following is displayed in the report Flange analysis Output report: 1.0 ERRORS OR WARNINGS: ------------------ *** *** ERROR -- ( during INPUT PROCESSING ) *** Inside diameter of flange should be equal to inside pipe/nozzle diameter How to correct the issue? Answer: In the Flange analysis module, select the FLANGE tab. Review the all the settings and confirm them to be correct. Example: node point B34 (pipeID = 2"CHS) has a pipe OD = 60.325 mm.. Therefore the indide dia in the flange analysis module should be < 60.325 mm. The flange analysis, FLANGE tab, node point B34: has a pipe inside dia.= 97.1804 mm . This is obviously an error on input settings. Suggest using the following process to reset all flange dimensions back to default library settings: 1. On the Flange tab, change Flange /bolt Dimensions to NS for all flanges. This action will turn many of the grayed out field white. good. 2. Next, change the same setting from NS back to the correct settings of B16.5 or B16.47. This action will gray out a many fields of data, essentially updating the data with information from the internal library file. 3. Recheck the Inside dia at node point B34: The value is 42.84 mm < 60.325 mm. good. 4. Run analysis and check report. See Also Bentley AutoPIPE External Links Bentley Technical Support KnowledgeBase Bentley LEARN Server Comments or Corrections? Bentley's Technical Support Group requests that you please submit any comments you have on this Wiki article to the "Comments" area below. THANK YOU!
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Wiki Page: 02. Flange Analysis report does not contain any results, only page headings
Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Environment: N/A Area: analysis Subarea: Original Author: Bentley Technical Support Group Problem: Flange Analysis report does not contain any results, only page headings. or Flange Check report does not show results on a consistent and repeatable basis it is found to be blank. Toggling the Analysis Methods back and forth between ASME or ANSI does nothing to help the matter as reports are still found to be blank (no results). Why does this happen and how to fix it? Answer: The CAE development team have fully investigated the problem and after rigorous testing were able to repeat the problem on one machine. The problem may arise due to memory overwrite. Steps to Repeat : 1. Open AutoPIPE 09.06.00.15. 2. Open Walkthru.dat. 3. Analyze all 4. Open Flange analysis module 5. Change analysis method to ANSI CHECK 6. Select ANSI Check tab 7. Flange material = A105 8. Check : use B16.5 data 9. Gasket = IA-SELFENR 10. Select Analysis Tab 11. Check Analyze for flange B02 12. Press Analyze button 13. Press show report button 14. Select OK button to close Flange analysis dialog 15. In AutoPIPE, open results grids 16. Review all tabs in grid 17. Close results grid 18. Open Flange analysis module 19. Select Analyze button 20. Select Show report button If using AutoPIPE V8i v09.05.00.21, please log a service ticket siting this information (Problem # 93986, 7000027324). Also, it has been reported that a similar issue is affecting AutoPIPE V8i v.09.06.00.15 when performing an ANSI Flange Check. If using this version AND ANSI flange check method, please file a Bentley service request siting this information (CAE-TR-11104). Avoidance: Close the program entirely, restart it, open the model, run the ASNI flange analysis, then create the ANSI flange analysis report before doing any graphical results checks. (Using the Results / Output Report does not affect the ANSI Flange analysis report creation.) See Also Bentley AutoPIPE External Links Bentley Technical Support KnowledgeBase Bentley LEARN Server Comments or Corrections? Bentley's Technical Support Group requests that you please submit any comments you have on this Wiki article to the "Comments" area below. THANK YOU!
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Wiki Page: 05. What load case combinations are added to the Flange Analysis dialog? what is the selection criteria?
Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Environment: N/A Area: Analysis Subarea: Original Author: Bentley Technical Support Group Problem: Non-code combinations are randomly selected for inclusion in the flange analysis, even when you are not doing one! They subsequently cannot be removed. Why is this and what is the selection criteria? Answer: The non-code combinations are orange as they are selected on the load tab on the flange analysis. You will have to go to flange analysis load tab and select combination to "None" to get rid of this orange color here. See Also Bentley AutoPIPE External Links Bentley Technical Support KnowledgeBase Bentley LEARN Server Comments or Corrections? Bentley's Technical Support Group requests that you please submit any comments you have on this Wiki article to the "Comments" area below. THANK YOU!
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Wiki Page: Flange Analysis - AutoPIPE
Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Environment: N/A Area: analysis Subarea: Original Author: Bentley Technical Support Group Note: 1. See Flange Analysis Trouble shooting tips and tricks in AutoPIPE 2. See the following link for logged enhancements: Flange Analysis Enhancements for AutoPIPE Comments, Questions, and Answers Item #1: How to perform an ANSI Check Flange Analysis with AutoPIPE Item #2: How do I perform an ASME Section VIII Div 1 / 2 or Appendix XI Flange Analysis in AutoPIPE? Item #3: On the Load tab, Operating Pressure field is limited to 3000 psi. Why? Item #4: Does the flange analysis in AutoPIPE determine expected leakage rates? Item #5: What load case combinations are added to the Flange Analysis dialog? what is the selection criteria ? Item #6: Flange data does not seem to be correct is it? Warning messages: 1. The Gasket Material [SPIRAL-WOUND ALLOY WITH MINERAL FIBER FILL] is not available in the GasketMaterials Table. 2. The required information is missing for this AutoPIPE flange analysis See Also Bentley AutoPIPE External Links Bentley Technical Support KnowledgeBase Bentley LEARN Server Comments or Corrections? Bentley's Technical Support Group requests that you please submit any comments you have on this Wiki article to the "Comments" area below. THANK YOU!
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Wiki Page: 03. When multiplying the Flange volume by the Flange density it does not equal the reported Flange Weight, why?
Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Environment: N/A Area: Reports Subarea: Original Author: Bentley Technical Support Group Dec 2014, AutoPIPE V8i 09.06.01.10 Problem: When multiplying the Flange volume by the Flange density it does not equal the reported Flange Weight, why? Answer: Although the dialog reports a default Flange Density of 0.283 lbf/ft3, AutoPIPE internally uses a density of 283.0 lbf/ft3. This is the equivalent of 0.164 lbf/in3 or 4500 kg/m3. This value is hard coded into the program If the user were to set the Flange Analysis material to 'NS' (Non-Standard) and set the density column to 283, they would see the correct weight displayed. This will be fixed in a future version of the program, See Also Bentley AutoPIPE External Links Bentley Technical Support KnowledgeBase Bentley LEARN Server Comments or Corrections? Bentley's Technical Support Group requests that you please submit any comments you have on this Wiki article to the "Comments" area below. THANK YOU!
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Wiki Page: Flange Analysis - Sub Report FAQ's in AutoPIPE
Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Environment: N/A Area: Reports Subarea: Original Author: Bentley Technical Support Group Comments, Questions, and Answers about AutoPIPE's Flange Analysis Sub Report Item #1: What does "Inside diameter of flange should be equal to inside pipe/nozzle diameter" mean in the Flange Analysis Output report? Item #2: Flange Analysis report does not contain any results, only page headings Item #3: When multiplying the Flange volume by the Flange density it does not equal the reported Flange Weight, why? See Also Bentley AutoPIPE External Links Bentley Technical Support KnowledgeBase Bentley LEARN Server Comments or Corrections? Bentley's Technical Support Group requests that you please submit any comments you have on this Wiki article to the "Comments" area below. THANK YOU!
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Wiki Page: Modeling Approaches in AutoPIPE
Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Environment: N/A Area: Modeling Subarea: Original Author: Bentley Technical Support Group AutoPIPE's Online help "Modeling Approaches" **Attention** Please see the following AutoPIPE help section: Help > Contents> Contents Tab> Modeling Approaches> Modeling Approaches> This help has been provided in order to give users ideas for modeling typical piping arrangements. The steps shown in each example should not be taken as the only method available to create models. In addition, the intent of the examples is to present ways to create adequate models of specific piping components for analytical purposes. Anchor Bends Cuts: Cold Spring Flexible Joints Frames Hangers Nozzles Pipes Reducers Rotating Equipment Supports Tees Valves Vessels AutoPIPE's Online help "Example Systems" This help has been provided in order to aid users in modeling more complex piping arrangements. Please see the following AutoPIPE help section: Help > Contents> Contents Tab> Modeling Approaches> Example Systems Choose from the following topics: A. PipeSOIL Interaction: Transition Example B. Water Hammer (Time History) Example C. Steam Relief (Time History) Example D. Harmonic Analysis Example In addition, with AutoPIPE V8i 09.06.xx.xx and higher other example systems / tutorials documents can be found under: C:\ Bentley\ AutoPIPE V8i SELECTseries\ Documents (default installation folder): -> ASME_ND_With_HDPE_Support_Walkthrough_Rev2.pdf -> AUTOPIPE NEW FEATURES AND ENHANCEMENTS [V9.60 TO V6.20].pdf -> AutoPIPE Quick Reference.pdf -> AutoPIPE_ASME_NB_Example.pdf -> AutoPIPE_MSRS_Example1.pdf -> AutoPIPE_Tutorial.pdf -> Hot_Clash_tutorial.pdf -> Non_Linear_Load_Sequencing.pdf -> PIPELINK_tutorial.pdf -> ProjectWise Integration.pdf -> Quickstart_AutoPIPE.pdf -> StresISO_Troubleshooting.pdf -> Tutorial - Import Coordinates from Excel to AutoPIPE.pdf -> Tutorial - Soil Overburden and Seismic Wave Propagation in AutoPIPE.pdf -> Tutorial-ASME_B311_With_HDPE.pdf -> Tutorial-DNV-OS-F101-2012.pdf -> Tutorial - ISO 14692 FRP.zip -> Tutorial - HDPE with B31.1 -> Tutorial - HDPE with ASME ND Note: some of the files mentioned in these PDF documents are loaded with File> Open > AutoPIPE model (*.DAT) or File> Model Management> Open Archive> systemname.APC system commands. Modeling In AutoPIPE: The following list contains detailed information about specialized modeling techniques with AutoPIPE: Piping: Model Different Types of PIPING (i.e. Coated, Corroded, Corrugated, Jacketed, etc...) Model Different Types of PIPING Components (i.e Tee, Bend, Reducer, Flange, Flexible Joint, Valve, etc..) Model Non-metallic Plastic Piping (i.e. Plastic, PVC, PP, PPR, HDPE, PE, FRP, GRP, etc.) Model a Ring Main (circular header) Offshore and Underground Piping Model Subsea (Underwater) Piping Modeling Offshore Piping per BS8010 or CSAZ662 section 11 Piping Codes Model Soil Properties (Underground Piping) Equipment , Supports, and Structure Model Compressor piping Modeling Vessels/ Nozzle Model Supports & Beam (Frames) Load: Model Seismic Analysis Model Buckling Modeling Slug flow Model Concentrated Forces Model Wind Sway On A Pipe Rack Model Vacuum Piping Model Fluid Density Modeling Thermal Bowing Commands: Cut / Copy / Paste / Rotate / Move / Stretch Commands Miscellaneous Modeling approach to account for piping beyond scope of work area Apply More Than 1 Piping Code In an AutoPIPE Model See Also Bentley AutoPIPE External Links Bentley Technical Support KnowledgeBase Bentley LEARN Server Comments or Corrections? Bentley's Technical Support Group requests that you please submit any comments you have on this Wiki article to the "Comments" area below. THANK YOU!
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Wiki Page: Rotating Equipment - Enhancements for AutoPIPE
Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Environment: Enhancements Area: Subarea: Original Author: Bentley Technical Support Group The following Flange Analysis enhancements have been logged for inclusion into a future version of AutoPIPE: Note: if an enhancement has not been added to the program, log an Service request for that enhancement. The more requests logged per an enhancement, the quicker the CAE development team will add that feature to the program. TFS-E158511: Rotating Equip - Add ANSI Pump library Description: Add ANSI Pump library to Rotating Equipment Type pull down. Logged: Dec 2014, AutoPIPE V8i 09.06.01.10 Development Project: TBD See Also Bentley AutoPIPE External Links Bentley Technical Support KnowledgeBase Bentley LEARN Server Comments or Corrections? Bentley's Technical Support Group requests that you please submit any comments you have on this Wiki article to the "Comments" area below. THANK YOU!
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Wiki Page: 02. Available AutoPIPE online Help Example Methods for Modeling Supports with related FAQ's.
Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Environment: N/A Area: Modeling Subarea: Original Author: Bentley Technical Support Group Dec 2014, AutoPIPE V8i 09.06.01.10 Straight Pipe Supports AutoPIPE online help has the following 7 support example systems available for review, Inside of AutoPIPE select: Help > Contents> Contents Tab> Modeling Approaches> Modeling Approaches> Support> Note: see each support example and related questions below Model 1: Saddle Support 1. if the saddle support significantly restrains the pipe from moving in the lateral direction, model with high friction value OR as a Support Type = "Guide" with large gap on top and 0.00 gap left / right / bottom. In addition set guide friction value for axial movement resistance. Model 2: Trunnion Support 1. Model a Trunnion pipe support Model 3: Rod Support 1. Model Vertical Rod support 2. Model pendulum swing of a pipe on a rod support Model 4: Pedestal with Rigid Strap no questions on this support example Model 5: Rigidly Guided Pipe Slide Assembly no questions on this support example Model 6: Sway Strut no questions on this support example Model 7: Spring Can with Friction no questions on this support example Elbow Pipe Supports AutoPIPE online help has the following 5 elbow support example systems available for review, Inside of AutoPIPE select: Help > Contents> Contents Tab> Modeling Approaches> Modeling Approaches> Bends> Base Supported Elbow> Note: see each support example and related questions below Model 1: Supported at a tangent point (simple vstop support for fig 1.2.6 a) no questions on this support example Model 2: Supported at a point along the bend (simple vstop support for fig 1.2.6 b) no questions on this support example Model 3: Alternate method for defining a support at a midpoint no questions on this support example Model 4: Modeling a "dummy leg" as a structural member (fig 1.2.6 b & c) no questions on this support example Model 5: Modeling a "dummy leg" as a pipe (Recommended fig 1.2.6 b no questions on this support example Spring Hanger Pipe Supports: AutoPIPE online help has the following 5 elbow support example systems available for review, Inside of AutoPIPE select: Help > Contents> Contents Tab> Modeling Approaches> Modeling Approaches> Hangers> Note: see each support example and related questions below 1. Variable and Constant Force Hangers no questions on this support example 2. Imposed Hanger Displacements no questions on this support example 3. Multiple Hanger Arrangements no questions on this support example 4. Two-Point Hanger Model 1: Connected-to Points are Vertical no questions on this support example Model 2: Connected-To Points are Not Vertical no questions on this support example See Also Bentley AutoPIPE External Links Bentley Technical Support KnowledgeBase Bentley LEARN Server Comments or Corrections? Bentley's Technical Support Group requests that you please submit any comments you have on this Wiki article to the "Comments" area below. THANK YOU!
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Wiki Page: 01. Different Types of Supports In AutoPIPE?
Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Environment: N/A Area: Modeling Subarea: Original Author: Bentley Technical Support Group Dec 2014, AutoPIPE V8i 09.06.01.10 AutoPIPE has 9 different types of pipe supports. Note: Please see the following AutoPIPE help section to see a grid and hyperlinks that completely describes each type of support and their respective bearing directions: Help > Contents> Contents Tab> Command Reference> Supports: From AutoPIPE's online help: A support may be added at any point in the piping (or framing) system, and more than one support is allowed at a point. Once the "Support Type" is specified, the dialog is updated to provide additional fields which are unique to the type of support requested. Suggest to continue reading AutoPIPE's online help for Support Considerations, Support Notes, Spring Hanger Related Topics, Guide-Related Topics, Modeling Examples , etc... Comments Questions and Answers about each AutoPIPE Support type Select the hyperlink below: Spring Constant V-Stop Incline Line Stop Guide Rotation Damper Tie/Link See Also Bentley AutoPIPE External Links Bentley Technical Support KnowledgeBase Bentley LEARN Server Comments or Corrections? Bentley's Technical Support Group requests that you please submit any comments you have on this Wiki article to the "Comments" area below. THANK YOU!
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Wiki Page: Line Stop - Support Type in AutoPIPE - FAQ's
Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Environment: N/A Area: Modeling Subarea: Original Author: Bentley Technical Support Group Dec 2014, AutoPIPE V8i 09.06.01.10 Comments, Questions, and Answers about AutoPIPE's Line Stop Support Type: Item #1: Would like to know the explanation about the line stop ignoring friction. In my opinion, this is not feasible especially when the line stops are placed nearby the nozzles. Moreover, high temperature lines usually have high line stop loads to produce high frictional forces in the other 2 directions. These are being ignored by AutoPipe. Answer: Based on typical construction practice, a line stop is usually a lug or some sort of pipe attachment rigidly mounted that moves with the pipe in the axial direction. Most line stops have a predetermine gap for axial movement. When the pipe's axial movement is such that the gap closes, typically the Lug / attachment has come into contact with something (i..e concrete block, beam structure, etc..) that it prevents the pipeline from freely moving. This type of support is called a Line Stop A Line stop has no friction involved as the lug / attachment is rigidly mounted to the pipe where it freely moves with the pipe. Also a pipe is not supported by a line stop, so there is no bearing force on a line stop support. The only contact for a Line stop is when the gap closes and it is resting against the anchor object. See Also Bentley AutoPIPE External Links Bentley Technical Support KnowledgeBase Bentley LEARN Server Comments or Corrections? Bentley's Technical Support Group requests that you please submit any comments you have on this Wiki article to the "Comments" area below. THANK YOU!
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Wiki Page: Modeling Support - AutoPIPE
Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Environment: N/A Area: Modeling Subarea: Original Author: Bentley Technical Support Group Select Support from the Insert or Modify menu to display the Support dialog. A support may be added at any point in the piping (or framing) system, and more than one support is allowed at a point. Once the "Support Type" is specified, the dialog is updated to provide additional fields which are unique to the type of support requested. With an AutoPIPE model loaded, open a the support dialog screen and press the " Help " button. The table will provide detailed information about the 9 different support typs including bearing direction, and support options for each type of support. From the online help, only when the first support is entered into a model does the dialog have any default values. Each successive support inserted afterwards, the dialog recalls the previous settings. Item #1: Different Type of supports in AutoPIPE Item #2: Available AutoPIPE online Help Example Methods for Modeling Supports with related FAQ's. Item #3: Building Structures First, add structural steel cross-sections properties into a model: Use the Beam Section Properties dialog... Enter a Section Id and configure the dialog as needed. Press Apply and then OK button to complete the process. Create a new Beam Section Id with different properties as needed for modeling. To insert a new beam into the model: Use the Insert > Beam Dialog... Select the correct Section ID from the drop down list of configured Beam Section Properties added above. NOTE : Beam assemblies can be copy/pasted into the model (connected or unconnected). Item #4: Pipe Rack Modeling Examples Be sure to review, AutoPIPE help section: Help > Contents> Contents Tab> Modeling Approaches> Modeling Approaches> Frames> there are 3 examples of pipe rack modeling Item #5: Support type that is not active for static seismic and dynamic load cases Item #6: Model Wind Sway On A Pipe Rack Item #7: Modeling Pipe-Structure Interaction in AutoPIPE Item #8: Modeling Guide Supports A guide support in AutoPIPE is different than Caesar's guide element - it's equal to Caesar's 2 supports (guide and Y stop). In AutoPIPE, a guide supports the pipe in the vertical and lateral directions but not axial. You can input gaps to remove vertical support or other directions if required. A guide support in AutoPIPE is always normal to the local pipe axis, so if the pipe is rotated the guide stays normal to the pipe which is very useful also when guides on skewed pipe. NOTE: Large gap will not display the support symbol in that direction for convenience. Item #9: Model a U-bolt in AutoPIPE Item #10: Working on Combined Structural & Piping models Item #11: Define a Displacement at a Support In AutoPIPE simply assign a displacement at the support for any load case, GR, T1, T2, E1, etc during modelling. Caesar has limitation of defining only 9 displacements which have to be combined in post processing to specific load cases. Select Insert > Xtra data > Imposed Support Displacement... The Imposed Support Displacement dialog opens. Enter in values and click OK . These can be applied also to anchors but only act in the direction of the restraint. Item #12: Model equipment supported by spring Item #13: Can you provide me a reference for where to use flexible anchor and where to use rigid anchor. In addition, Can you guide me for the use of supports as rigid or flexible. Does Bentley provide some literature for modeling of standard pipe supports in AutoPIPE? Answer: Modeling of typical pipe supports can be found in the following online help location: Help > Contents> Contents Tab> Modeling Approaches> Modeling Approaches> Supports. Some additional elbow supports can be found under: Help > Contents> Contents Tab> Modeling Approaches> Modeling Approaches> Bend> Base supported elbow. Otherwise, having a clear understanding of the 9 different supports in AutoPIPE, how each support behaves and their limitations, a person could model most of the typical pipe support designs used in industry with one or more of the 9 supports at the same node point. With regards to using a flexible or rigid support / anchor, use a flexible support / anchor when you know the flexibility and movement at a support node point. If you do not know the flexibility of a support / anchor, you have 2 choices: 1. model with rigid support / anchor or 2. make an engineering judgement and enter a flexibility value. Due to liability law suits, Bentley cannot not provide design decisions in a given scenario, but will be able to help you understand the difference and how the application functions. For a references about flexible / rigid anchors, see the following online help: Help > Contents> Contents Tab> Modeling Approaches> Modeling Approaches> Anchor Item #14: When entering Beam Section Properties, the dialog will automatically calculate the "Section Properties" for Shapes = Pipe or Solid pipe based on "Section Dimensions" entered, but will not do that for any other shape selected. Why? Answer: Pipe is a round geometrical shape that is easy to calculate the area for solid circle or hollow circle shape and thus section properties. However other Beam shapes (i.e. M-shape, Channel, Tube, etc..) are more complex shapes with to many unknowns (i.e inside radius, chamfers, etc..) to easily calculate the area and thus section properties. Therefore, only Solid pipe and Pipe shape have their section properties automatically calculated. All other shapes the user must enter in user defined values. Item #15: How to define horizontal spring in AutoPIPE, that is to be added in horizontal direction, to apply the loading necessary to reduce some unwanted displacements. Also the question is how to define/calculate preload (factory setting) in cold conditions, and get final loading in hot conditions... Answer: With of AutoPIPE V8i 09.06.00.19 and lower, according to the online help a spring bearing direction is Vertical only. Therefore a horizontal spring cannot be modeled. A new enhancement has been logged, CAE-CR- 10654: Enable spring support bearing direction to be user-specified. This will be added to a future version of the program. Workaround: None. Item #16: Questions about AutoPIPE Support type = V-STOP: Q1. Do we have any control to adjust V-Stop support stiffness (or) always it takes (default) rigid value. Answer: No, an AutoPIPE V-stop has rigid stiffness setting. If you wish to consider a V-stop with support stiffness, select Support type = Incline. Q2. If I want to arrest all the three directions then I have to add two more Incline supports perpendicular along the horizontal directions with 0mm Gap. Is it right way to add an anchor to avoid these three supports..? Answer: .Open any support dialog screen and press the Help button. The Help information for supports will appear, showing a grid listing each support used in AutoPIPE with a description and respective bearing directions. A support may be added at any point in the piping (or framing) system, and more than one support is allowed at a point. Knowing this, combine supports as needed to mimic your piping support in AutoPIPE. To answer the specific question above, an incline support bearing direction is user specified. One solution would be to add an incline support for each global axis direction, and yes, another solution would be to insert a single anchor with Trans. Stiff. set as needs and Rot. Stiff. set = 0.00 in all 3 directions. Or insert Rot. Stiff. values if it was decided to also control rotating resistance.
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Wiki Page: "Static Earthquake" - AutoPIPE Load Case
Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Environment: N/A Area: loadcase Subarea: Original Author: Bentley Technical Support Group Comments, Questions, and Answers about Static Earthquake Load Case In AutoPIPE Item #1, Question: Can the seismic input be explained again in the new version of AutoPIPE V8i 09.06.xx.xx and higher? Answer : Start by selecting load> Static Earthquake. By default there is already 1 seismic load case E1, using the mouse change the Seismic Code from User to ASCE 2010, Using the mouse, select the gray box on the left hand side of E1 to highlight the entire row, and press the Modify Selected button: Fill in the fields as required, see online help for details on all fields. Press OK button to enable the application to calculate the gravity factors to be applied to the model for the active load case. Press the New button as required to add additional load cases. Note: A maximum of ten (10) earthquake load cases can be used in a model at any one time. Note: the information in AutoPIPE was gathered from the USGS earthquake hazard maps and Data website Item #2, Comment: A real world seismic response of the piping system is probably somewhere between a linear and non-linear behavior since pipes may jump off supports and friction is no longer present So running a non-linear and a linear analysis then finding the maximum loads between the 2 results may yield the most real world results. Item #3, Comment: When using "ASCE 2010" Seismic Static Load Generator, The component response factor Rp is an important factor for calculating the seismic ground acceleration. Rp = 12 is common for stress, but ASCE-2010 paragraph 13.4.1. states that for supports/structure reactions to use a value NOT higher than 6: One Recommendation is to run 2 sets of seismic cases Rp = 6.0 (Support & Anchor Reactions) Rp = 12.0 (Pipe stresses) Item #4, Comment: Depending on your type of analysis (i.e. Linear or Non-linear) there are options for load case combinations: Linear Analysis: On the Combinations dialog, select the "Combination Options" button, and place a check mark next to "Add Negative Occasional Cases", From the online help: If this option is selected, the program will generate default Non-Code combinations for negative occasional load cases in addition to the default Non-Code combinations for positive occasional load cases of seismic and wind only, i.e. GRTP1+W1, GRTP1-W1, GRTP1+E1, GRTP1-E1, etc. The default state is unchecked. This option will be disabled (grayed out) if the "Add default Non-Code combination" option is unchecked or if the static analysis = non-linear. Some behaviors: • Disabled when 'Disable Auto Non-Code Combination' checked • Always Enabled for B31.8, B31.4 Offset, B31.8 Offset, CSA Z662 Offset • KHK (Enabled only for level 2) • All other codes (Enabled when one or more load sets are linear) Non-Linear analysis For static seismic cases we recommend a minimum of 8 cases as shown here which will provide the accurate non-linear support load combinations and occasional code stresses. Define minimum of 8 static seismic cases: +/- X +/- Y (4) and +/- Z +/- Y (4) where Y = Vertical Note: You would typically use OP1 as the initial state. Seismic loads at the load case level e.g. E1, E2 etc are combined as load vectors algebraically to get a resultant loading. Horizontal X and Z seismic loads are typically not combined in the same load case. Seismic guidelines recommend analyzing two non-concurrent horizontal seismic loadings. It is common to consider separate loadings for X and Z directions in different load cases E1 and E2 both with vertical Y component. So only cases SUS +E1 to SUS +E8 need to be considered for occasional stress compliance. Item #5, Comment For most tall structures, the greater seismic accelerations occur at the top of the structure / building. We can use the AutoPIPE's Insert> Xtra Data> "Member Static Earthquake factors " or " Point Static Earthquake factors " commands to model the increased seismic accelerations upward through the building / supporting steel structure. Typically component amplification between 1 and 2.5 Item #6, Comment: What is the recommended Seismic support spacing? Answer: MSS SP-127-2001 (Bracing for piping Systems Seismic - Wind - Dynamic) recommends a lateral seismic support every 40ft and longitudinal support every 80ft. But just note this guideline tends to be conservative and over predict number and size of seismic supports. Item #7, Question: In my project, there are piping systems that must be analyzed based on code calculations (i.e. Boiler piping, etc. ) and other systems that are called BOP (Balance Of Plant) piping that is non-crucial piping that has lower specifications for analysis than other code required piping. As such the Seismic G factors are different for these different systems. So How can I apply the correct G factor in our model? Answer: Please consider using 1 of the following options: Option #1: If the piping is not connected to gether and are really disconnected systems. Recommend that they be analyzed in different models with different settings as needed. Option #2: When using Load> Static Earthquake, the "G" force is applied to the entire model. There is no way of dictating different static earthquake loads factors to specific piping segment support. Option #3: Apply the earthquake as a MSRS ananlysis. See the following file that was installed with AtuoPIPE on your computer: C:\ Bentley\ AutoPIPE V8i SELECTseries\ Documents\ AutoPIPE_MSRS_Example1.pdf This is a good tutorial on how to perform a MSRS on a piping system. You would group the supports for one type of piping system into one support group, then all the other piping system supports into another support group, and apply the different responses as needed. See Also Bentley AutoPIPE External Links Bentley Technical Support KnowledgeBase Bentley LEARN Server Comments or Corrections? Bentley's Technical Support Group requests that you please submit any comments you have on this Wiki article to the "Comments" area below. THANK YOU!
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Wiki Page: Application Crashed or Freezes - AutoPIPE
Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Environment: N/A Area: Warnings & Errors messages Subarea: Original Author: Bentley Technical Support Group Symptoms and messages displayed when AutoPIPE program stops working properly: Item # 1: "A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available." Item # 2: Program periodically freezes, toolbars disappear, and application crashes - AutoPIPE V8i 09.05.01.02 Item # 3: Bentley AutoPIPE is (NOT RESPONDING) Item # 4: The application has failed to start becuase of IEGLic.dll was not found Item # 5: " Bentley AutoPIPE Application has stopped working " Item # 6: Microsoft Blue Screen - A problem has been detected and Windows has been shut down to prevent damage to your computer Item # 7: AutoPIPE crashes, Faulting module name: ntdll.dll Item # 8: Application Freezes on start-up: Fix: confirm Graphics Card drivers are updated and capable of support Open GL. Computer Mouse pointer constantly shows thinking status every few moments. Fix: confirm LMT error checking is turned OFF. see last step on WIKI page HERE .
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Wiki Page: Bentley AutoPIPE Application has stopped working - "A problem caused the....
The following is displayed: Bentley AutoPIPE Application has stopped working "A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available." Problem / Solution #1: Increasingly, AutoPIPE has been crashing when the user clicks "save." Often, the program will exhibit odd behavior which precedes the program crashing, such as the user being unable to use the arrow keys to navigate to other points within the model. Other times, no odd behavior is detected and even without clicking "save" the program will spontaneously crash. The error that results each time is as follows: "A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available." Autopipe then closes without any user input. The CAE development team investigated this issue in detail on our end. They were able to relate it to possibly an issue with graphics driver update. Currently the graphics drivers in use on your machine are of version 8.1, dated 28th September 2009, where the latest drivers are released on 21st January 2013. Update the graphics driver from following location and settings and then check if it resolves the issue or not: http://support.amd.com/us/gpudownload/Pages/index.aspx Problem / Solution #2: Program crashes on exporting buried pipe options to NTL because model contains invalid value(zero) for pointer to buried pipe options. To avoid the issue, Change piping code from B31.3 to B31.1 because buried pipe option is not available in B31.3 Open Buried Pipe Options dialog (Tools> Model Options > Buried Pipe Result Options) and Press Ok so that buried pipe options pointer will be updated OR Save model as AutoPIPE V94 DAT Open V94 model and program will update buried pipe options pointer Then NTL will be exported successfully. Problem / Solution #3: Program crashed when pressing the "Generate Default description" button on the Load> Load Case Description dialog screen. The problem was that default description of SAM cases exceeds the maximum limit of Load case description length. This issue has been logged under TFS-D103020: application closes abnormally on generating default description. Avoidance: Do not use the "Generate Default description" button if this occurred. Manually update the description names as needed. This will be fixed in AutoPIPE 09.06.01.xx and higher. Problem / Solution #4: Program crashed when pressing the "Renumbering" button on the toolbars. Avoidance: There is no avoidance, there is a problem with the model. Sometimes the issue is related to bends. Somehow program skipped to delete bend mid points. This issue and others similalre can only be fixed by the CAE development team. Please log a service request, attach the AutoPIPE *.APC file and the development team will try and fix it. This is a known issue, but no known reason as to the root cause. It will be good if you could remember any operations performed on bend. Was the bend deleted or converted to run/tee point using “Modify > Convert To” commands?
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Wiki Page: Bentley AutoPIPE is (NOT RESPONDING)
Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Environment: N/A Area: Crashed Subarea: Original Author: Bentley Technical Support Group Problem: The following text appears in the application bar: Bentley AutoPIPE (systemname) (Not Responding) Why is this and What do I do? Answer: The most common reason for this to occur is because the application is trying to process the current command while another command is being issued before the first command has had time to finish being processed by the application. The 2nd command be be initiated by the user or by the application itself. The application needs additional time to processes model that have: A. A lot of node points B. Modal analysis with very high cut off frequency C. Any type of dynamic analysis D. Copy / Pasting large amounts of data E. etc.. Depending on the function / analysis being performed, the program needs sufficient time to process. Pressing additional keyboard keys or menu selection will cause the application to instantly crash. The best course of action is to leave the mouse and keyboard alone and let the application complete the intended process on its own. After a period of time, the process should be completed and the (Not Responding) message will disappear from the application bar. The user can continue to use the application as intended. Again, best course of action, give AutoPIPE time to process the initiated commands before pressing more buttons. If this issue occurs when the model is started: This maybe an indicator that there is a problem in the model's database if this Not Responding issue occurs when the model is first opened and after a considerable period of time it does not clear by itself. Available options: 1. Create a new model. Start from the beginning and create a new model with AutoPIPE. 2. Import the old model into a new model. Create a new model in AutoPIPE with proper General model Options (i.e. Correct piping code, correct number of Press/Temp cases, correct units library etc.). When the program allows the user to start entering geometry data, select File> Insert Model> AutoPIPE Model (*.DAT) command (see online help for details on this command). Follow the prompts to import an exiting AutoPIPE model into the current new file. When a model is inserted, all the data from the original file is reorganized into the current data base, resets all library data, re-orders segments, re-orders all node number, etc.. essentially this process refreshes the data. Then save the file to a different name and continue working. 3. Create a Service ticket with Bentley technical support, be sure to add the model into a ZIP, and attach to the SR for the CAE development team to review. See Also Bentley AutoPIPE External Links Bentley Technical Support KnowledgeBase Bentley LEARN Server Comments or Corrections? Bentley's Technical Support Group requests that you please submit any comments you have on this Wiki article to the "Comments" area below. THANK YOU!
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Wiki Page: 08. Why does adding a node point change the soil settlement displacement in AutoPIPE?
Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Environment: N/A Area: Modeling Subarea: Original Author: Bentley Technical Support Group Item #8, Question: Why does adding a node point on segment with soil settlement (impose displacement) already defined make a big difference in the results. See following image and results At node A02 & B02. Note: Soil settlement (impose support displacement) was only modeled for the center elements on both segments: Segment A and B were identical, then node points A04 and A05 were added. Now the results are very different. Why? Answer: The way AutoPIPE stores soil information and how imposed support displacements are applied to soil points explains the issue mentioned above. Looking at the updated model below: AutoPIPE stores the soil information for an element with the preceding node i.e. soil information for the segment B, element B02 - B03 is stored at node B02. When the intermediate point A05 is inserted between A02 and A03, the impact of imposed support displacement applied at A02 is limited to intermediate soil points up to A05. Whereas in segment B, the impact of imposed support displacement applied at B02 continues up to point B05. Fix, need to apply another imposed support displacement at point A04 and A05 that corresponds with the same displacement found in segment B at the same location. Example: Assuming soil point B02 +3 is the corresponds with A05 on Segment A, Select A05 and add an impose support displacement = -0.262" If we apply this resulting displacement value at the newly inserted point A05, we would have slightly better matching results: The applied displacement value was a result value, and not really the actual imposed displacement, however we can see that we get a much better result now See Also Bentley AutoPIPE External Links Bentley Technical Support KnowledgeBase Bentley LEARN Server Comments or Corrections? Bentley's Technical Support Group requests that you please submit any comments you have on this Wiki article to the "Comments" area below. THANK YOU!
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Wiki Page: 09. Alternative of performing buried piping analysis by using DeltaT equivalent in AutoPIPE
Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Environment: N/A Area: Modeling Subarea: Original Author: Bentley Technical Support Group Problem: The input for seismic wave passage is in the form of applied soil strains. The soil strain obtained from the geotechnical-civil design is converted by the piping analyst into an equivalent temperature, as follows: DT = e / α Where DT is the equivalent temperature applied to the pipe model, e is the maximum soil strain due to seismic wave travel, and α is the coefficient of thermal expansion of the pipe. Bentley used references 1 and 2 for performing verification/validation for buried safety related piping. Should this verification/validation include the alternative of using DT equivalent temperature? Is this method valid for buried piping analysis? Reference. 1. ALA, American Lifelines Alliance Guidelines for the Design of Buried Steel Pipe, 2001 with February 2005 errata. 2. ATS QA58 and QA 93 Answer: AutoPIPE ATS test system QA93 does incorporate the strain [calculated as 4.8E-4 in/in in paper by E C Goodling] due to seismic wave passage in the test system: This procedure for calculating the soil strains due to seismic wave propagation and using an equivalent temperature rise to consider the effects has been published in numerous papers and standards 1 in slightly different forms: a. ASCE 4 – 98: Seismic Analysis of Safety-Related Nuclear Structures section 3.5.2 [Derivation of soil strains only] b. A proposed design procedure for buried safety related piping at nuclear power facilities, Timothy M. Adams et. al., PVP-Vol. 360, Pressure Vessel and Piping Codes and Standards – ASME 1998 pp. 502 c. A review of methods for analysis of buried pressure piping, George Antaki, WRC bulleting 425 d. Non-mandatory appendix D – Non-mandatory seismic analysis method, Cases of ASME Boiler and Pressure Vessel Code, N-755-1 (July 15, 2011) AutoPIPE provides the functionality of calculating this equivalent temperature rise due to seismic wave propagation for ASME B31.1 (2004 and later) and ASME NC/ND (2004 and later), however these calculations are not selected to be part our ATS currently. See Also Bentley AutoPIPE External Links Bentley Technical Support KnowledgeBase Bentley LEARN Server Comments or Corrections? Bentley's Technical Support Group requests that you please submit any comments you have on this Wiki article to the "Comments" area below. THANK YOU!
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