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Moderators: Karl Ottenstein, LaszloNagy, ejrolon, Barry Kelly, gkmethy

By Johnny
Hi People,
I am learning ArchiCAD at school and doing assignment at home. The interior wall I drew goes cross and goes on top of the exterior wall, I have clicked on the inside line of exterior wall but it starches to the outside line. Does anyone know how to fix this?

You have used a material which is intended to be used for thermal insulation from the outside of the building.
Did you try to select these two walls and then go to the material library to check all their material priority ?

I advise you to duplicate the material you want to modify instead of modify the original material.