I've set up a combined staad model of a concrete plate foundation and a steel structure.

I have a set of ASD and LRFD load combinations. Is there a way to have my beam unity check summary table only consider LRFD cases, my plate force summary table to only consider LRFD cases, and my support reactions/base pressure summary table to only consider ASD cases?

I would like to add these summary tables with relevant LCs to my report

Thanks in advance

I think you want to make use of the Load List command in STAAD.pro. It acts like a filter on the loads or combinations you want considered in subsequent checks. Check out the help topic for Load List under Help – Contents -Technical Reference - Command and Input Instructions for details.

I've tried with load lists and it works as long as I'm performing a code check like on the steel.

Since I'm not performing an actual code check on the joint reactions, I don't know how to exclude lrfd load combinations from being included in the reaction summary.

It should b as simple as calling the Load List function and listing the service combos, then issuing the print reactions, then issueing the load list command a second time and listing the LRFD combos, and finally issueing the code check command.

So, it looks like the print command will filter the tables in the STAAD output file but not the summary tables available in the STAAD report generator?

If include all combinations for my report and then add the reactions or reaction summary(or base pressure summaries) to the report, these tables will include all LCs? Is there no way around this?

Let’s take an example.
If you have four load combinations in a model, the first 2 are service and last 2 are factored design combos, then the end of your input file might look something like this:

LOAD LIST 1 2
PRINT MEMBER FORCES
PRINT SUPPORT REACTION
LOAD LIST 3 4
PARAMETER
CODE AISC
TRACK 1.0 ALL
CHECK CODE ALL
FINISH

Now, if you go into the Post Processing mode and setup the report you should select only the service combos under Load Cases and include the Reactions and the Steel Design Detail in the report. The reactions will be cases on the selected service combinations, while the steel code check is limited to the original combinations considered in the design.

Ok, that gets me most of the way there. Only issue left which I think I have to just live with is that I'd like to show service loads for "base pressure" on the plates but factored loads for forces in the plates.

Thanks for your help, much appreciated.