The linkage is made of three pin-connected A992 steel members, each having a diameter of 114 in. A three-member system. Pin support C is 8 feet above pin support A, with members from C and D to pin joint A, 4 feet below C, 4 feet above D, and 3 feet right of C and D. A third member goes right 6 feet from A to B, with P rightward from B. A horizontal force of P