https://community.graphisoft.com/t5/Documentation/Composites-section/m-p/287523#M45302 <DIV class="actalk-migrated-content"><T>Hello,<BR /> I'm working with composite slab and wall and I have an issue. As you can see in attachment I want line that I circled not to show on section. I set building material of concrete in slab higher value than the material of wall and I get this line showing up. Am i doing something wrong?<BR /> Thanks</T></DIV> Tue, 30 May 2023 07:59:12 GMT Anonymous 2023-05-30T07:59:12Z https://community.graphisoft.com/t5/Documentation/Composites-section/m-p/287523#M45302 <DIV class="actalk-migrated-content"><T>Hello,<BR /> I'm working with composite slab and wall and I have an issue. As you can see in attachment I want line that I circled not to show on section. I set building material of concrete in slab higher value than the material of wall and I get this line showing up. Am i doing something wrong?<BR /> Thanks</T></DIV> Tue, 30 May 2023 07:59:12 GMT https://community.graphisoft.com/t5/Documentation/Composites-section/m-p/287523#M45302 Anonymous 2023-05-30T07:59:12Z https://community.graphisoft.com/t5/Documentation/Composites-section/m-p/287524#M45303 If you hover of the warning triangle in the Building Material dialogue next to the surface pop up, you’ll find that you’re using legacy intersection methods. Possibly because the project was made in pre AC17.<BR /> <BR /> Open Project Preference, and go to Legacy. Uncheck the relevant checkbox. Sun, 29 Apr 2018 20:10:15 GMT https://community.graphisoft.com/t5/Documentation/Composites-section/m-p/287524#M45303 James B 2018-04-29T20:10:15Z https://community.graphisoft.com/t5/Documentation/Composites-section/m-p/287525#M45304 It works. Thank you Mon, 30 Apr 2018 08:17:55 GMT https://community.graphisoft.com/t5/Documentation/Composites-section/m-p/287525#M45304 Anonymous 2018-04-30T08:17:55Z