To add the calculated weight of the structure objects
as a load item, use the following procedure.
You must create a
primary load case first.
Note: The material definition or density constant is used for each
member, element, or solid to determine the self weight load.
-
Either:
The
Add New Load Items dialog opens.
-
Select the
tab.
-
Select a global
Direction for the selfweight.
This is typically the
vertical
direction but can be any global
direction.
-
Type a
Factor.
This is multiplier on the calculated weight of the
structure objects. You do not need to use a load factor for ultimate strength
design here, as that is typically applied to load combinations.
Note: A positive value
will act in the positive global direction, so you will typically use a negative
value here for gravity loads (-1 being the most commonly
used value).
-
Click
Add.
The load item is added to the selected load
case.
You must assign the load items to structure objects.
Tip: As
selfweight typically will act on all members, plates, etc., you can use the
Assign to View option and click
Assign to quickly assign this load item to all
objects in the structure (assuming that you have all objects currently
displayed in the view window).