Wind wizard workflow for open structures
The basic steps required to apply the wind wizard to open structures are as follows:
Note: Application of the wind wizard to open
structures is not currently available for the British Standard BS 6399-2, or
Australian AS:1170.2 wind code variants.
Select members to have open structure wind load applied
The first step is to confirm the
Apply open structure wind load property is set as required for those
structural members, ancillaries, and equipment to which the loads are to be applied.
(By default this property is off for structural members, but on for
ancillaries and equipment.)
It can be toggled on and off directly in the properties window as above, or it can be set graphically via Show/Alter State > Wind Loading.
For members and ancillaries, when it set on, additional properties become available, allowing the shape factor and effective area factors used in the wind load calculation to be customized.
For members only, each of these properties can be set for all stacks/spans, or individual stacks/spans.
Run the wind wizard
Having selected the members to have open structure wind loads applied, the next step is to run the Wind Wizard.
On the first page of the wizard you must select the Apply Open Structure Wind
Load option.
Note: The above
option is only available if at least one entity has been selected to have open
structure wind load applied.
Step-through the remaining pages of the wizard to generate wind model.
The wizard uses databases where appropriate (depending on the wind code) to determine the appropriate wind details for your structure location.
Related topics
Define the wind loadcases
The Wind Loadcases dialog can then be used to define the loadcase information for the directions you require.
Note: If you have a totally open
structure without any wall or roof panels the Cpi values are immaterial
and can be set to 0.0.
Once the loadcases have been defined, wind loads are automatically calculated for those entities selected to have open structure wind load.
Note: It is assumed that the wind loads are
developed to assess the overall stability of the structure and for member design.
The wind loads have not been specifically developed for the design of cladding and
fixings.
Related topics
Review wind loads
The open structure wind loads on members, ancillaries and equipment can be reviewed by opening a wind view for the required direction from the Project Workspace Wind tab and selecting the required loadcase.
Hovering the cursor over an entity displays
wind loading information in the Select Entity tooltip. The shape factor, wind
pressure and wind force are all listed.
For members, the same information is displayed
by hovering over the required stack/span.
Combine the wind loadcases into design combinations
Combine the wind loadcases into design combinations in the usual way.
Perform the static design
Run a static design from the Design tab.
Create an open structure wind loads report
These loads are automatically included in the Open Structure Wind Load report.