https://community.graphisoft.com/t5/Documentation/not-dimension-to-core/m-p/176055#M58922 And here is the second screenshot showing dimension settings. This also my default. Sat, 07 Jun 2014 01:33:53 GMT KeesW 2014-06-07T01:33:53Z https://community.graphisoft.com/t5/Documentation/not-dimension-to-core/m-p/176054#M58921 <DIV class="actalk-migrated-content"><T>I want to dimension to core only and it is not working. Composite has weatherboards outside and plasterboard inside. Both are designated as linings, not core. AC includes the weatherboard lining in its dimensioning, but not the plasterboard. It should at least be consistently wrong! I attached screen shots of problem and another of the dimension settings. Any ideas?</T></DIV><BR /><IMG src="http://community.graphisoft.com/t5/image/serverpage/image-id/75476iF3FC679E6BC1DD74/image-size/large?v=v2&amp;px=999" border="0" alt="not dimensioning to core only.PNG" title="not dimensioning to core only.PNG" /> Tue, 30 May 2023 13:12:28 GMT https://community.graphisoft.com/t5/Documentation/not-dimension-to-core/m-p/176054#M58921 KeesW 2023-05-30T13:12:28Z https://community.graphisoft.com/t5/Documentation/not-dimension-to-core/m-p/176055#M58922 And here is the second screenshot showing dimension settings. This also my default. Sat, 07 Jun 2014 01:33:53 GMT https://community.graphisoft.com/t5/Documentation/not-dimension-to-core/m-p/176055#M58922 KeesW 2014-06-07T01:33:53Z