I think you meant option 4 (I'm going to assume so). Option 4 is fine so long as your static friction is guaranteed to never allow the pipe to slide. In which case, you'd probably just want to put actual physical X/Z supports there to guarantee the analysis matches reality.

There's also options 5 and 6, which should've been mentioned previously, and I shouldn't have assumed the intent was to omit it.

Option 5: Model the T-pole in the structural modeler, and pull it in.
This is fairly laborious and less intuitive than "normal" CAESAR operation. I'll note the limitation that CAESAR only considers one moment of inertia for a beam, so it'll rotate the beam along its axis to whatever CAESAR prefers, and you'll have to accept it.

Option 6: Approximate the T-pole as a piping element whose moment of inertia matches that of the beam for the axis line of action in question. I'd sooner do this than option 5, though.