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Hi Joe,<br>
<br>
I don't recall ever seeing a rule of thumb for t-ribs. The hull
calculator worksheet on the website will let you see how rib
dimensions affect the strength of the hull. Sean Stevenson once
gave a good explanation of the relationship between the hull and
ribs but I can't find that email at the moment. In general, and
this is REALLY just a general statement, my experience with the
hull calculator has shown that ribs of the same thickness as the
hull, 4 times thickness for the web, and 6 times thickness for the
flange, are appropriate. That may not produce ideal results in
every instance, but for conceptual rule-of-thumb it should be
adequate.<br>
<br>
Jon<br>
<br>
<br>
On 3/25/2014 10:10 AM, Joe Perkel wrote:<br>
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<td valign="top">Hi Paul,<br>
<br>
The question is anecdotal based on an off the cuff thought
of upsizing the shell O.D. to 42" from 36". I am very
hesitant to do this do to weight and handling issues
however, several members have made a compelling rationale
r/t simple comfort. At 53 I'm 6' 190 lbs and should expect
that L to W ratio to change by build time! <br>
<br>
I have to think a bit about the shell thickness r/t
welding and corrosion issues, but Depth no more than 350'.
I seem to remember a cross section drawing of a T section
somewhere with a simple L/W/H relationship to shell T, but
can't find it again. <br>
<br>
I'll take that pdf if you don't mind. I'm not at home and
won't be until later this week to do some number
crunching.<br>
<br>
Thanks Paul!<br>
<br>
<br>
Joe<a moz-do-not-send="true"
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