1. The problem statement, all variables and given/known data The two couples act at the midpoints of bars AB and BD. Determine the magnitudes of the pin reactions at A and D. Neglect the Weights of the members. [See Attachments for Figure] 2. Relevant equations Sum Moment Along A & D = 0 Sum of Forces along X-axis Sum forces along y-axis 3. The attempt at a solution so i tried getting the answer at the back which is A = D = 4.22kN. i tried moment at A 20 -20 + Rd = 0 Rd = 0? After that i can't find a way to answer the question. Can someone guide me through it.