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Re: [EnergyPlus_Support] Severe error: degenerate surfaces





   ** Warning ** GetVertices: Distance between two vertices < .01, possibly coincident. for Surface=OS:SURFACE 567, in Zone=42-R2 THERMAL ZONE THERMAL ZONE THERMAL ZONE THERMAL ZONE THERMAL ZONE THERMAL ZONE
   **   ~~~   ** Vertex [4]=(-28.91,27.75,7.42)
   **   ~~~   ** Vertex [1]=(-28.91,27.75,7.42)
   **   ~~~   ** Dropping Vertex [4].
   ** Warning ** GetVertices: Distance between two vertices < .01, possibly coincident. for Surface=OS:SURFACE 567, in Zone=42-R2 THERMAL ZONE THERMAL ZONE THERMAL ZONE THERMAL ZONE THERMAL ZONE THERMAL ZONE
   **   ~~~   ** Vertex [3]=(-28.91,27.75,4.58)
   **   ~~~   ** Vertex [2]=(-28.91,27.75,4.58)
   **   ~~~   ** Cannot Drop Vertex [3]; Number of Surface Sides at minimum.
   ** Warning ** GetVertices: Distance between two vertices < .01, possibly coincident. for Surface=OS:SURFACE 660, in Zone=P1-P THERMAL ZONE THERMAL ZONE THERMAL ZONE THERMAL ZONE THERMAL ZONE THERMAL ZONE
   **   ~~~   ** Vertex [4]=(-28.91,27.75,4.58)
   **   ~~~   ** Vertex [1]=(-28.91,27.75,4.58)
   **   ~~~   ** Dropping Vertex [4].
   ** Warning ** GetVertices: Distance between two vertices < .01, possibly coincident. for Surface=OS:SURFACE 660, in Zone=P1-P THERMAL ZONE THERMAL ZONE THERMAL ZONE THERMAL ZONE THERMAL ZONE THERMAL ZONE
   **   ~~~   ** Vertex [3]=(-28.91,28.83,4.58)
   **   ~~~   ** Vertex [2]=(-28.91,28.83,4.58)
   **   ~~~   ** Cannot Drop Vertex [3]; Number of Surface Sides at minimum.

That's a degenerate surface -- it would like to remove vertex 3 but we can't have surfaces with only 2 sides.

OS:SURFACE 660 is this surface.  There are several others.


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