https://communities.bentley.com/products/building/performance/f/hevacomp-forum/114140/level-4-sbem-epc-and-atriaI am a little rusty on Atria, I have followed the process to set up two atrium areas in a single two storey building to meet a level 4 SBem. The building is new build. However I noticed that the floor area on the output SBEm and EPC includes the intermediateen-USTelligent Community 12https://communities.bentley.com/thread/349438?ContentTypeID=1Wed, 09 Dec 2015 13:19:43 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:3e4df31e-cca6-4a39-9b49-45882ecf233eDuncan Brown<p>Shaun&nbsp;<br /><br />You should consider <a href="/products/building/performance/w/building_performance__wiki/10226.atrium-space-design">this document</a> from our Solutions Wiki. <br /><br />The most accurate method will be to complete your Cad Input model and then switch it to Room data mode to remove the extra floor area. <br /><br />Ensure you back up your project before switching to Room data mode. <br /><br />Regards,</p><div style="clear:both;"></div>