Dear All

I am analysing an existing 18” pipe system that has a number of points along the pipe run where the pipe has grown off its supports and hence when it is at ambient temp it will still have a displacement at these points in the +Z direction. When analysing the system at next heat up to B31.3, I have included the displacement D1 at these points in the SUS case. Can you please confirm this is correct? Also if I have a displacement in the +Z direction in the cold condition but still want it to be free to grow from this position in the +Z direction, can I model this in Caesar without having to calculate what the expansion would be and input it directly as a D2 displacement at these points.