In the solution , we notice that the 2823.6 is the result of carry over factor from BA to AB . Why we dont need to do the same thing for BC to CB ?
1 Answer
Because it is an end pin joint, it is assumed that no moment can occur in the joint.
The Moment carried from BA to AB because AB is a fixed joint, and thus incur a moment as a result of the moment at joint B.
Check out the Moment Distribution Method Wikipedia page and look at their worked example, it should help clear things up.