https://community.graphisoft.com/t5/Project-data-BIM/Zone-problem/m-p/118903#M5073 Thank you Mark, that did the trick <IMG src="https://community.graphisoft.com/legacyfs/online/emojis/icon_smile.gif" style="display : inline;" /> Fri, 03 Jan 2014 10:56:48 GMT Anonymous 2014-01-03T10:56:48Z https://community.graphisoft.com/t5/Project-data-BIM/Zone-problem/m-p/118901#M5071 <DIV class="actalk-migrated-content"><T>Hello,<BR /> <BR /> i'm having problem with zones on my model. I don't understand why Archicad can't sum area in defined zone (it displays 0m2). This only happens on top floor (roof is above this floor). In stories below there is everything O.K., area is calculated properly.</T></DIV><BR /><IMG src="http://community.graphisoft.com/t5/image/serverpage/image-id/72892i9964A30F191CACC3/image-size/large?v=v2&amp;px=999" border="0" alt="Untitled.jpg" title="Untitled.jpg" /> Mon, 22 May 2023 21:43:44 GMT https://community.graphisoft.com/t5/Project-data-BIM/Zone-problem/m-p/118901#M5071 Anonymous 2023-05-22T21:43:44Z https://community.graphisoft.com/t5/Project-data-BIM/Zone-problem/m-p/118902#M5072 This may help, look under: &gt;Options, &gt;Project Preferences, Zones. You will find rules for reducing the zone's area depending on walls, columns, roofs, etc.<BR /><IMG src="https://community.graphisoft.com/t5/image/serverpage/image-id/12835i84E9F4689F5C20EA/image-size/large?v=v2&amp;px=999" border="0" alt="Zone area reduction.png" title="Zone area reduction.png" /> Fri, 03 Jan 2014 02:25:29 GMT https://community.graphisoft.com/t5/Project-data-BIM/Zone-problem/m-p/118902#M5072 Anonymous 2014-01-03T02:25:29Z https://community.graphisoft.com/t5/Project-data-BIM/Zone-problem/m-p/118903#M5073 Thank you Mark, that did the trick <IMG src="https://community.graphisoft.com/legacyfs/online/emojis/icon_smile.gif" style="display : inline;" /> Fri, 03 Jan 2014 10:56:48 GMT https://community.graphisoft.com/t5/Project-data-BIM/Zone-problem/m-p/118903#M5073 Anonymous 2014-01-03T10:56:48Z