https://community.graphisoft.com/t5/Documentation/material-intersection-problem/m-p/713203#M70477 <P>I am assuming that you modeled the "soil" using the Mesh tool.</P> <P>Unfortunately, the geometry of a Mesh will not intersect automatically with other element types based on the Intersection Priority of its Building Material.</P> <P>See more details here:</P> <P><A href="https://help.graphisoft.com/AC/29/INT/index.htm#t=_AC29_Help%2F040_ElementsVB%2F040_ElementsVB-271.htm%23XREF_12462_Basic_Junction&amp;rhsearch=intersection%20priority&amp;rhsyns=%20" target="_blank">https://help.graphisoft.com/AC/29/INT/index.htm#t=_AC29_Help%2F040_ElementsVB%2F040_ElementsVB-271.htm%23XREF_12462_Basic_Junction&amp;rhsearch=intersection%20priority&amp;rhsyns=%20</A></P> <P>You will have to do it manually, using Solid Element Operations (SEO).</P> <P>&nbsp;</P> Sun, 30 Aug 2026 11:12:15 GMT Laszlo Nagy 2026-08-30T11:12:15Z https://community.graphisoft.com/t5/Documentation/material-intersection-problem/m-p/713199#M70476 <P>I am not getting this intersection right. Both are with their default material properties.</P><P>is there any setting wrong? Please help Thank you&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Screenshot 2026-08-30 at 2.09.32 PM.jpeg"><img src="https://community.graphisoft.com/t5/image/serverpage/image-id/105345iB8807E6D3A67939F/image-size/medium?v=v2&amp;px=400" alt="Screenshot 2026-08-30 at 2.09.32 PM.jpeg" title="Screenshot 2026-08-30 at 2.09.32 PM.jpeg" /></span></P><P> </P> Sun, 30 Aug 2026 08:49:09 GMT https://community.graphisoft.com/t5/Documentation/material-intersection-problem/m-p/713199#M70476 Niranarch 2026-08-30T08:49:09Z https://community.graphisoft.com/t5/Documentation/material-intersection-problem/m-p/713203#M70477 <P>I am assuming that you modeled the "soil" using the Mesh tool.</P> <P>Unfortunately, the geometry of a Mesh will not intersect automatically with other element types based on the Intersection Priority of its Building Material.</P> <P>See more details here:</P> <P><A href="https://help.graphisoft.com/AC/29/INT/index.htm#t=_AC29_Help%2F040_ElementsVB%2F040_ElementsVB-271.htm%23XREF_12462_Basic_Junction&amp;rhsearch=intersection%20priority&amp;rhsyns=%20" target="_blank">https://help.graphisoft.com/AC/29/INT/index.htm#t=_AC29_Help%2F040_ElementsVB%2F040_ElementsVB-271.htm%23XREF_12462_Basic_Junction&amp;rhsearch=intersection%20priority&amp;rhsyns=%20</A></P> <P>You will have to do it manually, using Solid Element Operations (SEO).</P> <P>&nbsp;</P> Sun, 30 Aug 2026 11:12:15 GMT https://community.graphisoft.com/t5/Documentation/material-intersection-problem/m-p/713203#M70477 Laszlo Nagy 2026-08-30T11:12:15Z