STAAD.Pro Help

M. To add an ASCE 7 wind load definition

To populate the wind intensity table with values calculated per ASCE 7, use the following procedure.

These steps are performed when adding a wind load definition in the Add New: Wind Definitions dialog.
  1. In the Load & Definition dialog, select the Definitions > Wind Load entry and then click Add. The Add new: Wind Definition dialog opens.
  2. Select one of the following options from the Code drop-down list:
    • ASCE 7: 1995
    • ASCE 7: 2002
    • ASCE 7: 2010
    • ASCE 7: 2016
    ヒント: You can also type optional Comments to further describe the wind definition (e.g., "Wind in X direction").
  3. Click Add. The definition type is added to the Definitions > Wind Load entry in the Load & Definition dialog.
  4. In the Load & Definition dialog, select the new wind definition type and click the Add. The Add New: Wind Definitions dialog opens. The dialog now displays the Intensity and Exposures tabs.
    注記: The previously selected Code displays as a read-only selection.
  5. Click Generate. The ASCE-7: Wind Load dialog opens.
  6. On the Common tab, enter the general code and site information:
    1. Select the year (edition) of ASCE-7 code.
    2. Select the Building Classification Category.
    3. Type the Basic Wind Speed in the selected units.
    4. Select the Exposure Category.
    5. Select the Structure Type that best describes your structure.
    6. For ASCE 7-16, type the Height Above Sea Level of the base of the structure and select the appropriate units of length for this input.
    7. (オプション) If you need to Consider wind speed-up over Hills or Enscarpment, select the Yes option and then provide the rise type and dimensions
  7. Click Apply.
    注記: The second tab of the dialog updates to reflect the Structure Type selection.
  8. Select the second tab and enter the structure data:
    1. Type the structure dimensions.
    2. Select the structure cross-section type (where applicable).
    3. Select the orientation of members exposed to wind (where applicable).
    4. Select the shape of exposed structural members (where applicable).
    5. Type the Structure Natural Frequency. When the natural frequency is less than 1 Hz, the structure is considered "flexible" when calculating the gust effect factor, G. When the natural frequency is greater than or equal to 1 Hz, then the structure is considered "rigid" when calculating the gust effect factor.
    6. Type the Structure Damping Ratio.
    7. Select the Enclosure Classification (where applicable).
    8. (オプション) Select any combination of the Use Kzt, Use Kd, Use Kz, or Use Ke options to manually type values for these coefficients. The calculated coefficients are otherwise used.
  9. Select the Design Pressure tab. The height vs. intensity data calculated for the current input is displayed here.
  10. (オプション) You can check the options for Use G and Use Cf to manually type values for these coefficients. The calculated coefficients are otherwise used.
  11. Click OK. The dialog closes and the wind intensity at height data is added to the table on the Intensity tab.
注記: The input fill will contain a section on ASCE 7 wind load generation data. Though this is not read directly by the STAAD analysis engine, these values are stored to allow you to make changes to the wind load parameters.
You can now proceed with the wind load definitions using the calculated values per ASCE-7.