I work on simulations that sit on tall steel fabricated columns. This is primarily to try improving my understanding of what precisely the elastic fixture support does to help explain to my companies PE who uses a completely different analysis software. He isn't entirely comfortable with the wording SW has for inputting stiffness values and is concerned that this means the stiffness value stays normal to the face continuously as the program runs the calculation and the planar face the constraint is applied to rotates. however slight the movement may be. He is used to seeing the following for spring supports. He isn't confident the elastic support is the equivalent to this.
PE's Simulation elastic support input
SW Simulation Elastic support