Applies To
	Product(s):	STAAD.Pro
	Version(s):	All
	Environment:	N/A
	Area:	STAAD.Pro Support Solutions
	Subarea:	Physical Modeling workflow
	Original Author:	Bentley Technical Support Group

I am creating a model using the STAAD.Pro Physical Modeler but I am not able to find any option to define LOAD ENVELOPE which is needed for carrying out design checks. I am not able to define the load envelopes in the Analytical Modeling mode either for this model as the options are grayed out. What should I do ?

 

As of now, there is no way to define envelopes from within the Physical Modeler and so you would have to define it in the Analytical Modeling mode. However as you pointed out, the graphic user interface within the Analytical Modeler would not allow you to add these envelopes. This is because for models prepared using the Physical Modeler, many input/edit options are disabled within the Analytical Modeler. We are going to enhance the Physical Modeler down the line so that this would be possible in future. For now here is a workaround.

You can define these LOAD ENVELOPEs in the Analytical Modeling mode by directly typing the commands in the command editor. A sample is provided below for reference

…

LOAD COMB 1002 LRFD

1 1.2 2 1.6 3 1.6

PERFORM ANALYSIS

#> END DO NOT EDIT

DEFINE ENVELOPE

1001 ENVELOPE 1 TYPE STRENGTH

1002 ENVELOPE 2 TYPE SERVICEABILITY

END DEFINE ENVELOPE

LOAD LIST ENV 1 2

PARAMETER 1

CODE AISC UNIFIED 2016

…