Carry over factor in beam calculation -- confusion

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fonseh
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Homework Statement



I have several question regrading with this post .
1.) For BC and CB , we could see that it's far end pinned / roller supported , so , shouldn't be the K = (3/4)(EI / L ) ?
2.) I don't understand how the carry over factor works (in the second picture)

Homework Equations

The Attempt at a Solution


1.) I think the K for BC and CB are wrong , it should be K = (3/4)(EI / L ) ,, because at BA, we could see that K = (3/4)(EI / L ) ... [/B]
2.) I don't understand for the carry over factor for BA is 0 ... We can see that for AB , BC and also CD , the carry over factor is 0.5 , so shoulnt the carry over factor for BA is 0.5 also ?
 
Attachments
  • Continuous beam diagram with nodes E, A, B, C, D; 10 kN/m uniform load on the first span and a 20 kN point load at B; spans 2 m, 4 m, 4 m, 2 m, 4 m, with a 5 kN load at E.
    614.png
    24.2 KB · Views: 942
  • Moment distribution table with columns for joints E, A, B, C, D and members EA, AE, AB, BA, BC, CB, CD, DC, showing stiffness factors, fixed end moments, distribution and carry-over rows, and end of moment values.
    615.png
    33.1 KB · Views: 726
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I'm going to guess that you are not getting much response here, at least in part, to the use of the term "carry over factor." This is a strange term to me, and I've been doing things like this for a very long time. Can you re-word you question to convey your meaning more clearly?
 
Dr.D said:
I'm going to guess that you are not getting much response here, at least in part, to the use of the term "carry over factor." This is a strange term to me, and I've been doing things like this for a very long time. Can you re-word you question to convey your meaning more clearly?
it's in the structural analysis syllabus ...It's carry over factor ,
 
The perhaps you can ask the person who drew up the syllabus what it means.