Determine the maximum allowable load P that can be safely supported by the frame if t =...

Determine the maximum allowable load P that can be safely supported by the frame if t = 1.25 in. and b = 3.5 in. The wood has a normal failure stress of σ_fail = 6 ksi, and shear failure stress of τ_fail = 1.5 ksi. Use a factor of safety against failure of 2.