M. To create a reference load
To define a reference load and add it to a reference load item, use the following procedure.
Tip: A reference load of type Mass is especially useful to
define the structure masses used for dynamic analyses. One reference load case
can be used by each of those analysis commands.
-
In the
Load & Definition dialog, select the
Definitions > Reference
Load Definitions entry and then click
Add.
The Add New Reference Load Definitions dialog opens.
- Optional:
Type a Number for the load case.
The program will increment the load case number based on existing load case numbers.
- Optional:
Select the
Loading Type.
This selection is used when automatically generating load combinations. If you select a live load type, you may also indicated if the load is Reducible per UBC/IBC.
Dead Soil Ice Live Rain Water/ Ice Wind on Ice Roof Live Ponding Crane Hook Wind Dust Mass (See Notes a-c) Seismic-H (horizontal, See Note d) Traffic Gravity Seismic-V (vertical, See Note d) Temperature Push Snow Accidental None Fluids Flood - Type a Title used to easily identify this load case.
-
Click
Add.
The reference load definition is added to the Definitions > Reference Load Definitions entry in the Load & Definition dialog.
-
Add load items to the reference load definition.
This is done similar to how you would add load items to a primary load case. Reference load definitions can contain:
- selfweight loads
- nodal loads
- member loads
- physical member loads
- area loads
- floor loads
- plate loads
- surface loads
- solid loads
- temperature loads
-
Either:
- On the
Loading ribbon tab, select the
Load Items tool in the
Loading Specifications group
Tip: This will add the load item to the currently selected load group selected in the program status bar.
- In the Load & Definition dialog, select a primary load case in the Load Cases Details list and then click Add.
The Add New Load Items dialog opens. - On the
Loading ribbon tab, select the
Load Items tool in the
Loading Specifications group
-
Select the
Repeat Load > Reference
Load tab.
A list of the reference load definitions is in the Available Load Cases list.
-
Either:
- select a reference load definition and then click > to add it to the Reference Load item
- click >> to add all the available reference load definition to the Reference Load item.
- Repeat Step 9 to add additional reference load definitions to the Reference Load item.
- Optional: Type a Factor to apply to each reference load definition in the Reference Load item as needed.
-
Click
Add.