Solid union errors - Unable to union two solids

Geometry
,
1

Hi, I am unionizing each beam with its intersecting elements. Some were successful but some failed. I captured the errors as follows. Anyone knows where are the problems and how to fix it? Thanks!

 "System.ApplicationException: Unable union two Solids : BODY_VERTEX_CRUMBLE -- coincident face_face_ints with different body vertices
   at Autodesk.LibG.Solid.csg_union(Solid other)
   at Autodesk.LibG.SolidHost.Union(ISolidEntity geometry)
   at Autodesk.DesignScript.Geometry.Solid.Union(Solid solid)"
"System.ApplicationException: Unable union two Solids : INCONS_VERT_ATT -- inconsistent information in vertex and coedge attributes
   at Autodesk.LibG.Solid.csg_union(Solid other)
   at Autodesk.LibG.SolidHost.Union(ISolidEntity geometry)
   at Autodesk.DesignScript.Geometry.Solid.Union(Solid solid)"
"System.ApplicationException: Unable union two Solids : OUTSIDE_RANGE -- new ef_int outside edge
   at Autodesk.LibG.Solid.csg_union(Solid other)
   at Autodesk.LibG.SolidHost.Union(ISolidEntity geometry)
   at Autodesk.DesignScript.Geometry.Solid.Union(Solid solid)"
"System.ApplicationException: Unable union two Solids : FACE_BOUNDARY -- wire being deleted crosses face boundary
   at Autodesk.LibG.Solid.csg_union(Solid other)
   at Autodesk.LibG.SolidHost.Union(ISolidEntity geometry)
   at Autodesk.DesignScript.Geometry.Solid.Union(Solid solid)"
"System.ApplicationException: Unable union two Solids : EDGECOIN_PROBLEM -- system inconsistency processing edge coincidence
   at Autodesk.LibG.Solid.csg_union(Solid other)
   at Autodesk.LibG.SolidHost.Union(ISolidEntity geometry)
   at Autodesk.DesignScript.Geometry.Solid.Union(Solid solid)"
"System.ApplicationException: Unable union two Solids : INCONS_VERT_ATT -- inconsistent information in vertex and coedge attributes
   at Autodesk.LibG.Solid.csg_union(Solid other)
   at Autodesk.LibG.SolidHost.Union(ISolidEntity geometry)
   at Autodesk.DesignScript.Geometry.Solid.Union(Solid solid)"
"System.ApplicationException: Unable union two Solids : INCONS_REL -- inconsistent edge-face relationships
   at Autodesk.LibG.Solid.csg_union(Solid other)
   at Autodesk.LibG.SolidHost.Union(ISolidEntity geometry)
   at Autodesk.DesignScript.Geometry.Solid.Union(Solid solid)"
"System.ApplicationException: Unable union two Solids : EDGECOIN_PROBLEM -- system inconsistency processing edge coincidence
   at Autodesk.LibG.Solid.csg_union(Solid other)
   at Autodesk.LibG.SolidHost.Union(ISolidEntity geometry)
   at Autodesk.DesignScript.Geometry.Solid.Union(Solid solid)"

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image1842×816 152 KB

The group in pink gets the intersected elements with each beam. I think it has no problems. The python script node is like this, which uses the try-except to capture the errors:
image
image734×617 39.4 KB

Here are the dynamo and model flies:
dynamo.dyn (38.3 KB)

3

It seems when the beam is fully surrounded it would fail. Below the first picture was successful but the second picture failed.
image
image

4

It seems some of the errors are due to the union sequence. I inserted the beam as the first item with its intersected elements and most of the errors are gone. But there are still two errors - INCONS_FACE -- inconsistent face-body relationships and FACE_BOUNDARY -- wire being deleted crosses face boundary. To be more clear, I think it is better to open another topic. The new topic is here Solid union errors - INCONS_FACE -- inconsistent face-body relationships and FACE_BOUNDARY -- wire being deleted crosses face boundary Thanks.