A hole is to be drilled in the plate at A. The diameters of the bits available to drill the hole range from
to
in. in
-in. increments. If the allowable stress in the plate is 21 ksi, determine (a) the diameter d of the largest bit that can be used if the allowable load P at the hole is to exceed that at the fillets, (b) the corresponding allowable load P.
Fig. P9.83

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