https://community.graphisoft.com/t5/Modeling/Trimming-zones-with-beams/m-p/140628#M75458 You can Trim a Zone by Roofs, Slabs and Beams.<BR /> Select the Zone and any elements you want to trim it with and use the Design\Trim Zone menu command. Thu, 19 Nov 2009 21:27:44 GMT Laszlo Nagy 2009-11-19T21:27:44Z https://community.graphisoft.com/t5/Modeling/Trimming-zones-with-beams/m-p/140627#M75457 <DIV class="actalk-migrated-content"><T>Hallo everyone,<BR /> I need to calculate the average height of an attic space by dividing the total room volume by the area. However, the local council requires the height to be calculated from the top of the slab to the bottom of the roof beams (instead of the roof slab).<BR /> <BR /> Is there a way I can use beams to trim a zone, like I would do with a roof slab?<BR /> <BR /> Thanks!<BR /> <BR /> <BR /> Enrico</T></DIV> Tue, 23 May 2023 12:59:38 GMT https://community.graphisoft.com/t5/Modeling/Trimming-zones-with-beams/m-p/140627#M75457 Anonymous 2023-05-23T12:59:38Z https://community.graphisoft.com/t5/Modeling/Trimming-zones-with-beams/m-p/140628#M75458 You can Trim a Zone by Roofs, Slabs and Beams.<BR /> Select the Zone and any elements you want to trim it with and use the Design\Trim Zone menu command. Thu, 19 Nov 2009 21:27:44 GMT https://community.graphisoft.com/t5/Modeling/Trimming-zones-with-beams/m-p/140628#M75458 Laszlo Nagy 2009-11-19T21:27:44Z