https://forums.autodesk.com/t5/robot-structural-analysis-forum/problems-with-rc-beam-design-according-to-aci-318-5-6/m-p/9930727#M16936 <P>Hello everyone,</P><P><BR />I'm trying to use RSA for RC design according to the seismic requirements of ACI-318. However, I'm finding several problems with the resulting designs (this applies to either code 08 or 11... 14 not yet implemented in Robot as of version 2021).</P><P><BR />Is it me doing something wrong or is the procedure in RSA in need of corrective actions from the development team?</P><P><BR /><U><STRONG>Problem 5/6</STRONG></U></P><P><BR />When designing beams in intermediate (medium risk/ category C) moment frames , ACI-318 requires the following:</P><P>&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Capture.PNG" style="width: 331px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/854831i515BCD921BED424A/image-dimensions/331x224?v=v2" width="331" height="224" role="button" title="Capture.PNG" alt="Capture.PNG" /></span></P><P>&nbsp;</P><P>Note that Phi*Vn should cover the greatest between the shear envelope from load combinations and the shear resulting from the above article, which in turn should be the least between (a) and (b).</P><P>&nbsp;</P><P>However, RSA does <U>not meets nor takes into account condition 21.3.3.1(b)</U> of ACI-318... or does it? how?</P> Thu, 10 Dec 2020 19:57:37 GMT josefernando13 2020-12-10T19:57:37Z https://forums.autodesk.com/t5/robot-structural-analysis-forum/problems-with-rc-beam-design-according-to-aci-318-5-6/m-p/9930727#M16936 <P>Hello everyone,</P><P><BR />I'm trying to use RSA for RC design according to the seismic requirements of ACI-318. However, I'm finding several problems with the resulting designs (this applies to either code 08 or 11... 14 not yet implemented in Robot as of version 2021).</P><P><BR />Is it me doing something wrong or is the procedure in RSA in need of corrective actions from the development team?</P><P><BR /><U><STRONG>Problem 5/6</STRONG></U></P><P><BR />When designing beams in intermediate (medium risk/ category C) moment frames , ACI-318 requires the following:</P><P>&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Capture.PNG" style="width: 331px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/854831i515BCD921BED424A/image-dimensions/331x224?v=v2" width="331" height="224" role="button" title="Capture.PNG" alt="Capture.PNG" /></span></P><P>&nbsp;</P><P>Note that Phi*Vn should cover the greatest between the shear envelope from load combinations and the shear resulting from the above article, which in turn should be the least between (a) and (b).</P><P>&nbsp;</P><P>However, RSA does <U>not meets nor takes into account condition 21.3.3.1(b)</U> of ACI-318... or does it? how?</P> Thu, 10 Dec 2020 19:57:37 GMT https://forums.autodesk.com/t5/robot-structural-analysis-forum/problems-with-rc-beam-design-according-to-aci-318-5-6/m-p/9930727#M16936 josefernando13 2020-12-10T19:57:37Z