1. The problem statement, all variables and given/known data I have problem with the carried over factor in photo 670 . It's not stated the type of support at point A , B , C , D and E . But , at joint at A and E , it's fixed support because the author use distribution factor of 1 at A and E ( in photo 669) 2. Relevant equations 3. The attempt at a solution But , i am not sure what type of support at B , C , D are . For the green arrow , we can see that the author use carried forward factor of 0 , but for the 2 red arrows , we can see that the author used carried forwards factor of 0.5 . I 'm confused now . What type of supports at B , C , D are ? I think the author made the mistakes here . He cant use different carried forward factor , which are 0 and 0.5 at the support B , C and D .