RAM Modeler: what does the cracked section factor for torsion impact for beams?https://communities.bentley.com/products/ram-staad/f/ram-staad-forum/212279/ram-modeler-what-does-the-cracked-section-factor-for-torsion-impact-for-beamsThe RAM modeler requires cracked section factor for concrete beams. ACI 318 chapter 6 defines cracked section properties for beams in flexural and axial loads, there is no requirement for torsion cracked section properties so it is unclear what the analysisen-USTelligent Community 12RE: RAM Modeler: what does the cracked section factor for torsion impact for beams?https://communities.bentley.com/thread/643641?ContentTypeID=1Thu, 08 Apr 2021 18:54:06 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:a584f47e-2a70-4234-9876-c17221b5d3e7Seth Guthrie<p>Some users prefer to consider the beams highly cracked, this reduces torsion demand typically and forces the system to resist moments through another load path (assuming there is another).&nbsp; It&#39;s pretty common practice, especially for beam and girder systems. Note, in the Ram Concrete Analysis criteria you can choose to use the torsional cracked factors defined in modeler or&nbsp;override this with a percentage defined in criteria dialog itself.&nbsp;</p> <p>See also:&nbsp;<a href="/products/ram-staad/w/structural_analysis_and_design__wiki/9430/ram-concrete-beam-faq">https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/9430/ram-concrete-beam-faq</a>&nbsp;</p><div style="clear:both;"></div>