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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.
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 Nonlinear 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.analysis
Item #5: How is the ground Ground elevationdetermined for a Wind load case?
Item #6: How to input Input a Wind profile using Wind Velocity instead of Wind Pressure?
Item #7: How to account Account for East and West wind in both +ve and -ve directions?
Item #8: Will "Inclined" wind direction set to off Off global axis take care of user required eccentric, torsional, or pitched wind loading of for FPSO or / off shore platforms?platform
Item #9: Should the Wind Shape Factor Multiplier be 1 or 0.7 when using the for ASCE wind specificationtype?
Item #10: How to apply Apply the same wind speed over the to entire model?
Item #11: How can the pipe Pipe movement be greater than the support gap setting for wind load combinations?
Item #12: Is the pressure used in a wind 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?plate) value
Item #13: What is the interpretation for annual Annual probability and its relevance for determining wind load in AutoPIPE?loading
Item #14: Is there any way to consider Apply friction only the for expansion case but combinations and not in any occasional Wind loads ?combinations
Item #15: Does AutoPIPE count pipe insulation thickness towards the effective diameter Area used 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 Appears wind load appear that is not being applied to the model?in analysis calculation
Item #19: Why does the Wind direction Dx, Dy, Dz values change on the Wind Profile dialog?
Item #20: ASCE7 - 2010 Wind loadsare : Service or Ultimate loads?
Item #21: Model Wind Sway On A Pipe Rack
Item #22: How to convert from Convert wind loads from MPH to PSF?
Item #23: What is the value of ASCE 7Wind , wind load setting "Cf" when value is set to when defined as Automatic?
Item #24: Using ASCE 7Is , basic wind speed assumed to be sustained or a gust ?
Item #25: Apply Wind load to constant spring support
Item #26: Is ASCE 7-10, Kd term missingfrom ASCE 7-10
Item #27: Options to apply wind to pipe on a Vessel / tower
Loads and Load Sets - AutoPIPE
Bentley AutoPIPE