<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>