Trans RINA, Vol 153, Part A4, Intl J Maritime Eng, Oct-Dec 2011


Table 3: Ratio of Maximum / Allowable Shear Stress on Double Bottom Girders and Floors of Cargo Hold No4 LC 9 (Oblique Seas)


Shear Stress of D.B Grillage for DB Height Variations DB


Height (mm)


1610 1680 1800 1900 2000


DB


Height (mm)


1610 1680 1800 1900 2000


Fl. No 1 Fl. No 2 Fl. No 3 Fl. No 4


0.55 0.54 0.51 0.49 0.47


0.64 0.62 0.60 0.58 0.57


0.72 0.70 0.68 0.66 0.64


0.80 0.78 0.75 0.72 0.69


Fl. No 5 Fl. No 6 Fl. No 7 Fl. No 8


0.72 0.70 0.67 0.67 0.63


0.69 0.67 0.64 0.62 0.60


0.60 0.58 0.56 0.54 0.52


0.45 0.43 0.41 0.39 0.38


S. Grd. No9 P S. Grd. No4 P


0.70 0.69 0.67 0.66 0.64


1.02 0.99 0.96 0.92 0.91


C.L Grd.


1.11 1.09 1.05 1.02 0.99


S. Grd. No4 SB S. Grd. No9 SB


1.16 1.14 1.10 1.07 1.04


0.89 0.87 0.86 0.84 0.83


1A 2A 3A


Figure 6: Hot Spot Stress Estimation Procedure


©2011: The Royal Institution of Naval Architects


A-255


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