Why is only span AB considered in beam moment calculation, not span BC?

[fonseh]

Homework Statement

In this problem , why only caluclation of span AB is considered ? why the span BC isn't required ?

Homework Equations

The Attempt at a Solution

I think there's soemthing wrong with the question , We have to consider the calcilation of span BC also

 

[PhanthomJay]

The slope-deflection method is used to solve for statically indeterminate beams using deflection and rotation equations to make the beam statically determinate. The free end span from the free end to the nearest support can be solved by statics alone, so there is no need for the indeterminate analysis in this span. I haven't used this method in ages.

 

[fonseh]

The slope-deflection method is used to solve for statically indeterminate beams using deflection and rotation equations to make the beam statically determinate. The free end span from the free end to the nearest support can be solved by statics alone, so there is no need for the indeterminate analysis in this span. I haven't used this method in ages.

sorry , i am confused now , why for span AB , it's statically indeterminate ?

 

[PhanthomJay]

sorry , i am confused now , why for span AB , it's statically indeterminate ?

It is fixed at A and with a settled pin support at B. So there are 4 unknowns and just 3 equations of static equilibrium