<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style=""><span style="font-size: 13px;">Hi Brian!</span><div style="color: rgb(0, 0, 0); font-family: arial, sans-serif; font-size: 13px;"><br></div><div style="color: rgb(0, 0, 0); font-family: arial, sans-serif; font-size: 13px;">I had read up on concrete testing a few years ago, and all my concrete books are boxed up, so from rough memory...</div><div style="color: rgb(0, 0, 0); font-family: arial, sans-serif; font-size: 13px;"><br></div><div style="color: rgb(0, 0, 0); font-family: arial, sans-serif; font-size: 13px;">Yes, there should be several tests you can perform to determine the characteristics of your concrete. The empirical data should help improve the calculations around strength of larger sections, ribs, etc.. You should be able to do a compression test (squeezing a solid piece until it cracks) and some sort of beam test (supporting each end of a section and applying pressure to the center - then measuring the defection to the breaking point). </div><div style=""><span style="font-size: 13px;"><br></span></div><div style=""><span style="font-size: 13px;">A google image search should give some ideas/leads:</span></div><div style=""><span style="font-size: 13px;">https://www.google.com/search?q=concrete+testing&source=lnms&tbm=isch</span></div><div style=""><span style="font-size: 13px;"><br></span></div><div style=""><span style="font-size: 13px;">Cheers!</span></div><div style=""><span style="font-size: 13px;"> Ian.<br></span><blockquote style="color: black; font-family: arial, sans-serif; font-size: 10pt; padding-left: 5px; margin-left: 0px; border-left: 2px solid rgb(0, 0, 255); font-weight: normal; font-style: normal; text-decoration: none;">-----Original Message-----
<br>From: Brian Cox via Personal_Submersibles <personal_submersibles@psubs.org>
<br>Sent: Dec 24, 2017 8:28 PM
<br>To: PSubs <personal_submersibles@psubs.org>
<br>Subject: [PSUBS-MAILIST] concrete testing
<br><br><div style="font-family:Arial, sans-serif; font-size:10pt;"><div>Hey Sean, </div><div> I have a number of sections of my ferro -cement hull ( 12" x 16" x 1 1/2") . Is there anyway to have a strength test done on these? I don't know if the test could be extrapolated to larger sections or not . Also I have ribs within the structure at 18" intervals so obviously it would not account for that. I have the sections because I cut out access holes to enable me to better seal the inside.</div><div> </div><div>Brian </div></div>
</personal_submersibles@psubs.org></personal_submersibles@psubs.org></blockquote></div></div></body></html>