ok Jason.
Actually I got some answer of solving shading with Build shades but can
neighboor building be attached instead of Building shades?
The links for pd2 and inp files are below
http://rapidshare.de/files/38454952/Trial_Shading.inp.html
http://rapidshare.de/files/38454958/Trial_Shading.pd2.html
thanks
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?mit Esiyok