The rigid structure BCD is supported as shown. Assume a 6.1 ft, b=4.9 ft,c-3.2 ft, d-1.7 ft, and 0-38°. Tie rod (1) is attached at A and C with double shear pin connections, while the pin at B is attached with a single shear connection: The pins at A, B, and C each have a diameter of 0.500 in. and an ultimate shear strength of 80 ksi, and tie rod (1) has diameter of 0.625 in, and a yield strength of 47 ksi. Determine the allowable load P that may be applied to the rigid beam' if an overall factor of safety of 2.2 is required.

Fig: 1