coordinate system

Hi everyone,

I'm working on UEL and studying wave propagation in beam. I have a special purpose beam element defined in UEL which has four nodes.  When the beam is horizontal and a vertical load is being applied, it's working perfectly:

*Node
      1,           0.,           0.,        0.
      2,         0,           0.25,        0.
      3,           0.,           0.,        0.
      4,         0.,           0.25,        0.