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Re: [EnergyPlus_Support] VertexEntry - Surface Geometry

At 11:02 PM 9/19/2004, Tim Britton wrote:
>How crucial is it to enter all surfaces according to the VertexEntry field 
>(ie as either clockwise or anticlockwise) under Surface Geometry ? I am 
>exporting from Ecotect to EnergyPlus and the vertices of some surfaces are 
>listed as clockwise while others are listed as anticlockwise after 
>exporting the idf file to EnergyPlus. Is it necessary to correct the file 
>so that all surfaces are entered all the same or can it be left with some 
>surfaces as clockwise and others as anticlockwise?

It sort of depends, I believe.  If it's a flat surface (ceiling, roof or 
floor), then it may not matter.  If it's a wall, it does matter -- the 
difference between whether it's a south facing wall or a north facing wall.

If I were you and Ecotect is not giving you the proper translation, I would 
certainly bring it to their attention.


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