To manually define a load combination for
post-processing, use the following procedure.
One or more primary
load cases or load combinations must be defined in order to create a
combination.
Note: Load combinations
are not directly processed by the analysis engine. Instead, their
results are combined as specified by the combination method. In order to
process combinations of load cases use either a Repeat Load or a Reference Load
in a new Primary Load case.
-
On the
Loading ribbon tab, select the
Combinations tool in the
Loading group.
The
Define Load Combinations dialog
opens.
-
Type the
Load No and load combination
Name.
-
Select the combination Type to use:
-
Normal - a
linear combination of a factor multiplied by a load result value
-
SRSS - a linear
combination of either a Normal type or a square root of the sums squared (SRSS)
combination. The factors for each control how each load component is added to
the resulting combination
-
ABS - a linear
combination of a factor multiplied by the absolute value of a load result
-
Select a Primary load case or existing load combination from the
Available Load Cases list and then click
> to add the load combination definition.
The selected load case is added with the default type
factors defined above. You can change the factors for an individual load
combination component as needed.
Moving Loads: In order to include the
individual load cases from a moving load generator, you must add these using
the
STAAD.Pro Editor. They
cannot be entered using the dialog as they are not generated until the STAAD
engine processes the input file.
-
Repeat step 4 for all load components to be added to this load
combination.
Tip: Click
>> to include all
Available Load Cases, which will be use the
default factors.
- Optional:
To remove a load component from the
Load Combination Definition, select the
component in and then click
<. To remove all load components, click
<<.
-
Click
Add.