DNV standard for certification No.2.21 Vs ISO 12215-5

Discussion in 'Class Societies' started by Brian.Lin, Dec 28, 2010.

  1. Brian.Lin
    Joined: Aug 2006
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    Brian.Lin Junior Member

    Regarding the FRP stiffener requirement moment of inertia,there are big different between DNV and ISO.
    DNV CH.4 Sec.4 E200
    I=36.4*d*fi*P*b*l^3 cm^4

    fi=7000/Ea

    ISO 12215-5
    I=((26*(kcs^1.5)*P*s*lu^3)/(k1s*Etc))*10^-11 cm^4

    k1s=0.05 (y/lu)

    Does anyone have idea about it?
    the results of DNV and ISO have big different.
     
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