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I have calculated hub stress factors for an integral type flange of FIG 2-4(7) -were h/ho is much less than 0.1-using equations of 2-7.1 Table for integral type flanges. When I verified my results for stress values with PVElite I realized that PVElite found the hub stress factor for h/ho=0.1. Looking why PVElite has considered h/ho equal to 0.1 when actually was less, I find in FIG.2-7.2,2-7.3 and 2-7.6 that for F,V factors, h/ho curves have minimum value of 0.1 but for f factor, h/ho curve has minimum value of 0. My question is if the equations of table 2-7.1 have any restriction of minimum h/ho or if it is mentioned somewhere in the Code that integral flanges with h/ho less than 0.1 should be calculated with h/ho considered 0.1.
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