https://community.graphisoft.com/t5/Modeling/AC12-wall-intersection-bug/m-p/185700#M100640 Strange.<BR /> I could reproduce this bug easily with AC13 too.<BR /> <BR /> ArchiCAD cannot do a full circular Wall as one element so if breaks it up into two Walls. I think that fact that the two half-circle Walls join at the same point as the inner Wall has something to do with it.<BR /> <BR /> Workaround: If you rotate the two Walls, let's say 90 degrees so the point they join does not coincide with where the third wall joins them, there will not be a problem.<BR /> <BR /> I will report this to GS. Tue, 09 Feb 2010 13:49:11 GMT Laszlo Nagy 2010-02-09T13:49:11Z https://community.graphisoft.com/t5/Modeling/AC12-wall-intersection-bug/m-p/185698#M100638 <DIV class="actalk-migrated-content"><T>Two circular walls intersection with a third wall causes strange behaviour in 3D. AC12 edu 2675 int.</T></DIV><BR /><IMG src="https://community.graphisoft.com/t5/image/serverpage/image-id/12481i5B935BA54AB8C688/image-size/large?v=v2&amp;px=999" border="0" alt="AC12 wall bug.jpg" title="AC12 wall bug.jpg" /> Tue, 09 Feb 2010 11:36:19 GMT https://community.graphisoft.com/t5/Modeling/AC12-wall-intersection-bug/m-p/185698#M100638 Anonymous 2010-02-09T11:36:19Z https://community.graphisoft.com/t5/Modeling/AC12-wall-intersection-bug/m-p/185699#M100639 Curious...<BR /> Does the circular wall have another skin that is not shown due to "partial structure display" being enabled? No coincident wall on another layer or story?<BR /> Snap Tue, 09 Feb 2010 13:33:32 GMT https://community.graphisoft.com/t5/Modeling/AC12-wall-intersection-bug/m-p/185699#M100639 Anonymous 2010-02-09T13:33:32Z https://community.graphisoft.com/t5/Modeling/AC12-wall-intersection-bug/m-p/185700#M100640 Strange.<BR /> I could reproduce this bug easily with AC13 too.<BR /> <BR /> ArchiCAD cannot do a full circular Wall as one element so if breaks it up into two Walls. I think that fact that the two half-circle Walls join at the same point as the inner Wall has something to do with it.<BR /> <BR /> Workaround: If you rotate the two Walls, let's say 90 degrees so the point they join does not coincide with where the third wall joins them, there will not be a problem.<BR /> <BR /> I will report this to GS. Tue, 09 Feb 2010 13:49:11 GMT https://community.graphisoft.com/t5/Modeling/AC12-wall-intersection-bug/m-p/185700#M100640 Laszlo Nagy 2010-02-09T13:49:11Z