<div dir="ltr">Another question is regarding the parametre Ls, or centre to centre spacing of stiffeners, since due to design - portrusion for tower is 850 mm wide but i cannot place stiffeners exactly at the edge of portrusion, so I offseted them 100 mm from opening (this is also questionable). So now I have 2 different spacings between stiffeners, and I wonder which one to use, my guess would be the bigger one. <br><br>Thank you in advance, Petar</div><div class="gmail_extra"><br><div class="gmail_quote">2016-08-20 12:16 GMT+02:00 Petar Topljak <span dir="ltr"><<a href="mailto:petar.topljak@gmail.com" target="_blank">petar.topljak@gmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi everyone, <div><br></div><div>My name is Petar and I am coming from Rijeka, Croatia. I am designing 1-ATM one man submersible as a project for one of my subjects at my university. <br><br>The idea is to design a pressure hull that can safely whitstand pressure at 150 meters. Procedure is to design submersible according to ABS (or ASME or any else classification company) rules, create model using 3d modelling software and do a finite element analysis of the model. <br><br>The problems I ran into are in using the spreadsheet, as there are some parameters that are not defined in the ABS rules, or I am not able to find them or understand them due to my english skills, + we use metric system, so changing creates additional problems. <br><br><br>I understand the classic questions asked about the lobes and coefficients (eta), but i had issues with Tw, Lw Lf and tf parametres - "mail3 stiffener.png" am I doing it right ? <br><br>I am also sending you screenshots of my sheet, so you can check it if you like and alert me for any possible mistakes. <br><br>Thank You in advance, Petar</div></div>
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