ASSIGN P DELTA TO LOAD CASES OR TO COMBINATION OR BOTH

[ALEXTHAINESE]

while setting up analysis type  , robot gives option to  choose linear load cases and combinations for  the required analysis type  as shown in below screencast

now for Pdelta anaalysis  if required to setup analysis type for a given model  , what is the best practice to follow ?

1) assign both linear load cases ( which ever applicable  , ex. linear cases with both vertical and lateral loads) and combination s .

2) Assign only applicable linear load cases  as mentined above 

3) Assign only load combinations 

kindly please recommend ? 

the question is asked from the perspective of saving the analysis time taken by RSA? 

[Rafacascudo]

Assign pdelta only to the load cases/combinations you want results.Fir the cases you do not need results , mark them as " auxiliary"
Any case/ combination is treated separatedly for any kind of nonlinear analysis