To add a wind definition per ASCE 7
To add a wind load definition using the ASCE 7 code parameters, use the following procedure.
You can enter wind load definitions in
terms of ASCE 7 code parameters and the program will generate the wind intensity versus
heigh curve.
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On the Catalog ribbon tab, select the
Wind tool in the Create Load
Definitions group.
The Create: Wind Load Definition dialog opens. - (Optional) Type a unique Name for the new wind intensity load definition.
- Select the ASCE7 from the Code drop-down list
- Select the Version of the ASCE 7 code to use. The program can generate wind intensity values for ASCE 7-2010 or ASCE 7-16 editions. The new load definition is selected and the properties are displayed in the Properties window.
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In the Properties group, specify the wind load
details:
- Select the Building Classification Category.
- Type the Basic Wind Speed.
- For ASCE 7-16, type the Height above sea level used in calculating the Ke factor.
- Select the Exposure Category.
- Select the Structure Type. The second group of code parameters updates according to this selection.
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Select the hill or escarpment profile:
- Select the Type of Hill or Escarpment on which the structure sits.
- If a hill is present, specify the dimensions.
- Specify the structure type-specific data. For structures with a natural frequency below 1 Hz, you may select if the structure is Rigid or Flexible. This determines how the gust effect factor is calculated.
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Specify the pressure values (either for building structure or other
structures):
- For buildings, select the side of the building to which this wind load applies.
- (Optional) To manually enter a value for the gust effect factor, G, check the option and type the value.
- (Optional) To manually enter a value for the force coefficient, Cf, check the option and type the value.
- (Optional) For buildings only: to manually enter a value for the product of the gust factor and internal pressure coefficient, GCpi, check the option and type the value.
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Define the exposure factors for different model groups:
- Click the Exposure tab.
- Click in the Exposure drop-down. The exposure and group table is displayed.
- Type the exposure Factor to use for each different group and then select the group name from the drop-down in the Group cell.
- Click OK.
- Click OK.