Question: Figures (a) and (b) show the cross sections of two beams that are constructed by nailing together four 2-in.-thick wooden boards. For each beam, determine

Figures (a) and (b) show the cross sections of two beams that are constructed by nailing together four 2-in.-thick wooden boards. For each beam, determine the largest allowable spacing of the nails that will resist an 8000-lb vertical shear force. The allowable shear force in each nail is 250 lb

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