https://communities.bentley.com/products/ram-staad/f/ram-staad-forum/243764/rcdc-not-recognising-dummy-beamsHi I have made use of DUMMY beams with size of 0.01mm * 0.01mm. Unfortunately RCDC does not detect those dummy beams. I wanted to design cantilever slabs that is possible only if the DUMMY are getting detected.en-USTelligent Community 12https://communities.bentley.com/thread/760634?ContentTypeID=1Tue, 04 Apr 2023 16:37:48 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:df100dfe-840e-4fff-8e2f-d304c1201eecAbhijeet Gundaye<p>Hi,&nbsp;</p> <p>RCDC identifies the slab based on the area bounded by beams. Generally the minimum width of the beam is expected as 150mm</p> <p>if you model beam of size 0.01mm x 0.01mm, RCDC will skip these beams. You have modelled these dummy beams to get the slab cantilever action. RCDC doesn&#39;t identify the cantilever slab.</p> <p>if you want to design cantilever slab, RCDC allows to add new slab on the input tab. You can add a new slab and define it as a cantilever slab. RCDC will provide the design for the new added slab.<br /><br /><img style="max-height:240px;max-width:320px;" src="/resized-image/__size/640x480/__key/communityserver-discussions-components-files/5932/pastedimage1680626343273v1.png" alt=" " /></p><div style="clear:both;"></div>