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I am trying to setup a problem to represent a pipeline crossing over another perpendicular pipeline on the seabed. I am trying to represent the problem as a simple beam and having some issues with the supports i am selecting and the boundary conditions.

Attached is a picture representing the problem, but using the boundary conditions i select and trying to solve for the 5 unknowns i get two possible answers for one of the unknowns, P_0. I think one of my boundary conditions are wrong.

I using symmetry and the crossing pipe is fixed at the location of the crossed pipe. At the point where the pipe touches down i am using a hinged support.

I am trying to solve for P_0, M_0 and L

Not looking for a solution just a correction or validation of the boundary conditions i have selected.

Thanks.