https://communities.bentley.com/products/ram-staad/f/ram-staad-forum/196898/steel-structures-optimization-of-members-is-not-increasing-member-sizes-to-make-them-pass-using-indian-code-is-800-2007-lsdWhy I am getting &quot;Fail&quot; results after using optimization process of commands?; even selecting Ratio 0.9 initially, e.g look into a member no. 17, which is still showing Fail with Utilization Ratio =1.57 ! I had followed COMMAND STRUCTURE: Performeden-USTelligent Community 12https://communities.bentley.com/thread/593896?ContentTypeID=1Fri, 19 Jun 2020 13:35:32 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:4d149176-f8d2-4745-b20b-89a2df9ae10bSurojit Ghosh<p style="margin-top:0in;"><span style="color:black;font-family:&#39;Arial&#39;,sans-serif;font-size:9.0pt;">I&nbsp;have noticed a problem related to member selection (SELECT command) in STAAD.Pro CONNECT Edition (including latest version - build 22.04.00.40) and this is related to IS800 code only. Though you have provided correct inputs, program is unable to select proper section when the critical condition is slenderness as well as interaction. Program supposed to perform iterative analysis to compute optimum section and member will be reported as fail only if highest section is not sufficient to resist the force. This is not happening now due to some internal problem and if you perform member selection, fail member will be reported. I have already reported&nbsp;this&nbsp;to the development team and hopefully this problem will be fixed soon.&nbsp;</span></p> <p style="text-align:start;"><span style="color:black;font-family:&#39;Arial&#39;,sans-serif;font-size:9.0pt;">There is no alternative, rather than manually changing the section size. You can use SELECT command, but if the member fails in slenderness or interaction, you need to change the section manually.</span></p><div style="clear:both;"></div>