Bentley Communities
Bentley Communities
  • Site
  • User
  • Site
  • Search
  • User
AutoPIPE
  • Product Communities
AutoPIPE
AutoPIPE Wiki 02g. "Wind" - AutoPIPE Load Case
    • Sign In
    • -Pipe and Vessel Stress Analysis - Wiki
      • +ADL PIPE
      • -Bentley AutoPIPE
        • +- General Information about AutoPIPE
        • +- NEW User Guide for AutoPIPE
        • +- Technical Support - AutoPIPE
        • +Batch Processing, ITS, and ATS using AutoPIPE
        • AutoPIPE QA&R program
        • +Download - Install - Release Notes - AutoPIPE
        • +File / Model Management using AutoPIPE
        • +General - AutoPIPE
        • +Graphics - AutoPIPE
        • +Grids (Input & Results) - AutoPIPE
        • +Import and Export - AutoPIPE
        • +Known Issues in AutoPIPE (Enhancements, defects, etc..)
        • +Libraries - AutoPIPE
        • +License AutoPIPE -
        • -Loads and Load Sets - AutoPIPE
          • 01. Animate Load cases - AutoPIPE
          • 02a. Load Case Descriptions in AutoPIPE
          • +02b. Static Analysis in AutoPIPE
          • +02c. Dynamic Analysis in AutoPIPE
          • +02e. "Hydrotest" - AutoPIPE Load Case
          • +02f. "Static Earthquake" - AutoPIPE Load Case
          • -02g. "Wind" - AutoPIPE Load Case
            • 05. How is the ground elevation determined for a Wind load case in an AutoPIPE model?
            • 06. How to input a Wind profile using Wind Velocity instead of Wind Pressure in AutoPIPE?
            • 07. How to account for East and West wind in both +ve and -ve directions in AutoPIPE?
            • 08. Will "Inclined" wind direction set to off global axis take care of user required eccentric, torsional, or pitched loading of FPSO or off shore platforms in AutoPIPE?
            • 09. Should the Wind Shape Factor Multiplier be 1 or 0.7 when using the ASCE wind specification type in AutoPIPE?
            • 10. How to apply the same wind speed over the entire model in AutoPIPE?
            • 11. How can the pipe movement be greater than the support gap setting for wind load combinations in AutoPIPE?
            • 12. Is the pressure used in a wind profile the basic pressure (i.e. acting on a plate), or do I have to adjust the pressure for a pipe when inputting the figure in AutoPIPE?
            • 13. What is the interpretation for annual probability and its relevance for determining wind load in AutoPIPE?
            • 14. Is there any way to consider friction only the expansion case but not in any occasional AutoPIPE Wind loads?
            • 15. Does AutoPIPE count pipe insulation thickness towards the effective diameter for wind/wave force calculations?
            • 16. Where can one find information on ASCE 7 Wind speeds for AutoPIPE?
            • 18. Why does the wind load appear that is not being applied to the model in AutoPIPE?
            • 19. Why does the Wind direction Dx, Dy, Dz values change on the Wind Profile dialog in AutoPIPE?
            • 20. Are ASCE7 - 2010 Wind loads ASD or LRFD in AutoPIPE
            • 21. Model Wind Sway On A Pipe Rack in AutoPIPE
            • 22. How to convert from wind loads from MPH to PSF in AutoPIPE?
            • 23. What is the value of ASCE 7 Wind load setting "Cf" when value is set to Automatic in an AutoPIPE model?
            • 24. Using ASCE 7 Is basic wind speed assumed to be sustained or a gust in an AutoPIPE model?
            • 25. How are Wind loads applied to Constant Spring supports in AutoPIPE?
            • 26. Is Kd term missing from ASCE 7-10, so Is this mix of 7-05 and 7-10 for AutoPIPE Wind load?
            • Nonlinear wind load analysis in AutoPIPE
          • +02h. "Snow Load" - AutoPIPE Load Case
          • 02i. "Thermal Bowing" - AutoPIPE Load Case
          • +02k. "Response / Force Spectrum Loads" - AutoPIPE Load Case
          • +02n. "Harmonic" - AutoPIPE Load case
          • 02p. "Time History" (M1-M50) - AutoPIPE Load Case
          • 02s. "Buoyancy" - AutoPIPE Load Case
          • +02t. "Wave" - AutoPIPE Load Case
          • +02u. "Fluid Transient" - AutoPIPE Load Case
          • 02v. "Steam Relief" - AutoPIPE Load Case
          • +02w. "Thermal Transient Analysis" (TTA) - AutoPIPE Load Case
          • +03a. "Gravity" - AutoPIPE Load Case
          • +03b. "Pressure" - AutoPIPE load case
          • 03c. "Temperature" - AutoPIPE load case
          • +03d. "SAM" (Seismic Anchor Analysis) - AutoPIPE load case
          • +03e. "Fatigue" - AutoPIPE load case
          • +03f. "Xtra Data" - AutoPIPE load case
          • +03g. "Occasional" - AutoPIPE load case
          • 03h. "Distributed Load" - AutoPIPE load case
          • 04. Results From Loads and Load Sets Not Answered By Piping Code Calculations
          • +05. Combination Load Cases (Tools> Combinations dialog)
          • +06. Non-linear Load Sequencing Explained
        • +Localization (Non-English Language) - AutoPIPE
        • +Modeling Approaches in AutoPIPE
        • +Modules (i.e. Flange Analysis, Spring Hanger Selection, Rotating Equip, TTA) in AutoPIPE
        • +Piping codes - AutoPIPE
        • +Post Processing - AutoPIPE
        • +Printing - AutoPIPE
        • +Reports - AutoPIPE
        • Security
        • +Settings - AutoPIPE
        • +Stress Isometrics - AutoPIPE
        • +Technology Productivity Capabilities
        • +Warnings, Errors, Crashed, Confirm, etc.. messages in AutoPIPE
      • +Bentley AutoPIPE Nozzle (WinNOZL)
      • +Bentley AutoPIPE Vessel (powered by Microprotol)
      • +Bentley PlantFLOW
      • +Bentley PULS
    • Multi-lingual announcement from BENTLEY TECHNICAL SUPPORT.
    • Working at Home with AutoPIPE
    • +AutoPIPE Brand Learning Resources
    • +Attend a live meeting with an AutoPIPE Analyst

     
     Questions about this article, topic, or product? Click here. 

    02g. "Wind" - AutoPIPE Load Case

    Comments Questions and Answers about Wind loads

    Item #1: Comment 

    The Load> Wind command enables the user to define static wind load cases (W1 - W10) by generating wind pressure:

    Vs. Profile piping height profiles

    Per ASCE 7 1998, 2002, 2010, or 2016 code

    Per Uniform Building Code (UBC) requirements.

    After specifying a new wind load case, select the first cell in the left column to highlight the row and press the Modify button to see more settings for the specified Wind Load Type as indicated below:

    The wind force is applied as uniform loads in the local coordinate system of the straight pipe or bend element. The equivalent wind force is assumed to act through the centroid of the element.

    Wind loads will only be applied to piping if both conditions are meet:

    1. segments that have "Applied Wind" checked on. I

    2. Wind load case must be enabled inside of an analysis set:

    Segment Tab on the input grids:

    Load> Static Analysis Sets> modify analysis set:

    Item #2: Comment

    AutoPIPE 11.02.00.08 and higher: Wind loads defined in the model can be applied to structural members.

    AutoPIPE 11.01.xx and lower: Beam members are not subjected to wind loads, enhancement has been logged, (135281).

    Item #3: Comment

    In order to exclude piping inside a building from wind loads, the piping inside should be entered as a separate segment(s) from the piping outside the building. 

    Segment Tab on the input grids:

    With the model Input grid opened, select the Segment tab, see column labeled "Apply Wind". Segments with Applied Wind  enabled are considered outside, while segments with Apply disabled are considered inside.

    Item #4: Comment

    When specifying wind load profile elevation values, remember to check that ground is correctly defined on the main Wind dialog screen. This applies also to wind loadings per ASCE-7 and UBC.

    Opening older AutoPIPE models may display a warning message "negative elevations found" may indicate an incorrect wind loading across this model.

    If the Wind Ground elevation value was found to be greater than all the vertical pipe coordinates in a model, than the entire model would be considered to be underground and thus no Wind load will be applied. Confirm Wind load ground elevation relative to the piping model.

    Item #5: How is the ground elevation determined for a Wind load case?

    Item #6: How to input a Wind profile using Wind Velocity instead of Wind Pressure?

    Item #7: How to account for East and West wind in both +ve and -ve directions?

    Item #8: Will "Inclined" wind direction set to off global axis take care of user required eccentric, torsional, or pitched loading of FPSO or off shore platforms?

    Item #9: Should the Wind Shape Factor Multiplier be 1 or 0.7 when using the ASCE wind specification type?

    Item #10: How to apply the same wind speed over the entire model?

    Item #11: How can the pipe movement be greater than the support gap setting for wind load combinations?

    Item #12: Is the pressure used in a wind profile the basic pressure (i.e. acting on a plate), or do I have to adjust the pressure for a pipe when inputting the figure?

    Item #13: What is the interpretation for annual probability and its relevance for determining wind load in AutoPIPE?

    Item #14: Is there any way to consider friction only the expansion case but not in any occasional Wind loads?

    Item #15: Does AutoPIPE count pipe insulation thickness towards the effective diameter for wind/wave force calculations?

    Item #16: Where can one find information on ASCE 7 Wind speeds?

    Item #17:

    The following only affects AutoPIPE V8i 09.06.00.15 and will be fixed in the next new version 09.06.01.xx and higher:

    The Ground Elevation for Wind is always entered in Feet, regardless of the model units file specified on Tools> Model Options> General dialog . This can be confirmed with the Loads Summary Data Listing report using any metric units file (CAE-TR-11097).

    Item #18: Why does the wind load appear that is not being applied to the model?

    Item #19: Why does the Wind direction Dx, Dy, Dz values change on the Wind Profile dialog?

    Item #20: ASCE7 - 2010 Wind loads are Service or Ultimate loads?

    Item #21: Model Wind Sway On A Pipe Rack

    Item #22: How to convert from wind loads from MPH to PSF?

    Item #23: What is the value of ASCE 7 Wind load setting "Cf" when value is set to Automatic?

    Item #24: Using ASCE 7 Is basic wind speed assumed to be sustained or a gust ?

    Item #25: Apply Wind load to constant spring support

    Item #26: Is Kd term missing from ASCE 7-10

    See Also

    Loads and Load Sets - AutoPIPE

    Bentley AutoPIPE

    • Load Case
    • MPH
    • AutoPIPE
    • Wind
    • PSF
    • Share
    • History
    • More
    • Cancel
    • Mike Dattilio Created by Bentley Colleague Mike Dattilio
    • When: Wed, Aug 14 2013 11:03 AM
    • Mike Dattilio Last revision by Bentley Colleague Mike Dattilio
    • When: Fri, May 28 2021 11:20 AM
    • Revisions: 47
    • Comments: 0
    Recommended
    Related
    Communities
    • Home
    • Getting Started
    • Community Central
    • Products
    • Support
    • Secure File Upload
    • Feedback
    Support and Services
    • Home
    • Product Support
    • Downloads
    • Subscription Services Portal
    Training and Learning
    • Home
    • About Bentley Institute
    • My Learning History
    • Reference Books
    Social Media
    •    LinkedIn
    •    Facebook
    •    Twitter
    •    YouTube
    •    RSS Feed
    •    Email

    © 2023 Bentley Systems, Incorporated  |  Contact Us  |  Privacy |  Terms of Use  |  Cookies