1. The problem statement, all variables and given/known data The rigid truss supports the loads shown. Find the reactions the pin A and roller D exert on the truss. All concentrated loads act on the pins joining the truss members 2. Relevant equations ƩMa= -5ft(3kips)-10ft(2kips)-.707(1kip)10ft+Dy(15ft) Dy=2.80 kips*ft 3. The attempt at a solution My question is just regarding pin B. Am I supposed to assume some force is going down and to the left-45 degrees-at this location?